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authorMichael Niedermayer <michaelni@gmx.at>2003-04-04 14:42:28 +0000
committerMichael Niedermayer <michaelni@gmx.at>2003-04-04 14:42:28 +0000
commit0da71265d84b587c7159cd82708ca60ad050dd4c (patch)
treefc97766fbbea1ab3af9df1aa9e4f37f8b0aca02d /libavcodec/h264.c
parent6aafe463e5d1483b95ad259334c45d2741c92fb2 (diff)
downloadffmpeg-0da71265d84b587c7159cd82708ca60ad050dd4c.tar.gz
H264 decoder & demuxer
Originally committed as revision 1732 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/h264.c')
-rw-r--r--libavcodec/h264.c4418
1 files changed, 4418 insertions, 0 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
new file mode 100644
index 0000000000..757400b337
--- /dev/null
+++ b/libavcodec/h264.c
@@ -0,0 +1,4418 @@
+/*
+ * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/**
+ * @file h264.c
+ * H.264 / AVC / MPEG4 part10 codec.
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "common.h"
+#include "dsputil.h"
+#include "avcodec.h"
+#include "mpegvideo.h"
+#include "h264data.h"
+#include "golomb.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+#define interlaced_dct interlaced_dct_is_a_bad_name
+#define mb_intra mb_intra_isnt_initalized_see_mb_type
+
+#define LUMA_DC_BLOCK_INDEX 25
+#define CHROMA_DC_BLOCK_INDEX 26
+
+#define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
+#define COEFF_TOKEN_VLC_BITS 8
+#define TOTAL_ZEROS_VLC_BITS 9
+#define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
+#define RUN_VLC_BITS 3
+#define RUN7_VLC_BITS 6
+
+#define MAX_SPS_COUNT 32
+#define MAX_PPS_COUNT 256
+
+#define MAX_MMCO_COUNT 66
+
+/**
+ * Sequence parameter set
+ */
+typedef struct SPS{
+
+ int profile_idc;
+ int level_idc;
+ int multiple_slice_groups; ///< more_than_one_slice_group_allowed_flag
+ int arbitrary_slice_order; ///< arbitrary_slice_order_allowed_flag
+ int redundant_slices; ///< redundant_slices_allowed_flag
+ int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
+ int poc_type; ///< pic_order_cnt_type
+ int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
+ int delta_pic_order_always_zero_flag;
+ int offset_for_non_ref_pic;
+ int offset_for_top_to_bottom_field;
+ int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
+ int ref_frame_count; ///< num_ref_frames
+ int required_frame_num_update_behaviour_flag;
+ int mb_width; ///< frame_width_in_mbs_minus1 + 1
+ int mb_height; ///< frame_height_in_mbs_minus1 + 1
+ int frame_mbs_only_flag;
+ int mb_aff; ///<mb_adaptive_frame_field_flag
+ int direct_8x8_inference_flag;
+ int vui_parameters_present_flag;
+ int sar_width;
+ int sar_height;
+ short offset_for_ref_frame[256]; //FIXME dyn aloc?
+}SPS;
+
+/**
+ * Picture parameter set
+ */
+typedef struct PPS{
+ int sps_id;
+ int cabac; ///< entropy_coding_mode_flag
+ int pic_order_present; ///< pic_order_present_flag
+ int slice_group_count; ///< num_slice_groups_minus1 + 1
+ int mb_slice_group_map_type;
+ int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
+ int weighted_pred; ///< weighted_pred_flag
+ int weighted_bipred_idc;
+ int init_qp; ///< pic_init_qp_minus26 + 26
+ int init_qs; ///< pic_init_qs_minus26 + 26
+ int chroma_qp_index_offset;
+ int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
+ int constrained_intra_pred; ///< constrained_intra_pred_flag
+ int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
+ int crop; ///< frame_cropping_flag
+ int crop_left; ///< frame_cropping_rect_left_offset
+ int crop_right; ///< frame_cropping_rect_right_offset
+ int crop_top; ///< frame_cropping_rect_top_offset
+ int crop_bottom; ///< frame_cropping_rect_bottom_offset
+}PPS;
+
+/**
+ * Memory management control operation opcode.
+ */
+typedef enum MMCOOpcode{
+ MMCO_END=0,
+ MMCO_SHORT2UNUSED,
+ MMCO_LONG2UNUSED,
+ MMCO_SHORT2LONG,
+ MMCO_SET_MAX_LONG,
+ MMCO_RESET,
+ MMCO_LONG,
+} MMCOOpcode;
+
+/**
+ * Memory management control operation.
+ */
+typedef struct MMCO{
+ MMCOOpcode opcode;
+ int short_frame_num;
+ int long_index;
+} MMCO;
+
+/**
+ * H264Context
+ */
+typedef struct H264Context{
+ MpegEncContext s;
+ int nal_ref_idc;
+ int nal_unit_type;
+#define NAL_SLICE 1
+#define NAL_DPA 2
+#define NAL_DPB 3
+#define NAL_DPC 4
+#define NAL_IDR_SLICE 5
+#define NAL_SEI 6
+#define NAL_SPS 7
+#define NAL_PPS 8
+#define NAL_PICTURE_DELIMITER 9
+#define NAL_FILTER_DATA 10
+ uint8_t *rbsp_buffer;
+ int rbsp_buffer_size;
+
+ int mb_stride; ///< stride of some mb tables
+
+ int chroma_qp; //QPc
+
+ int prev_mb_skiped; //FIXME remove (IMHO not used)
+
+ //prediction stuff
+ int chroma_pred_mode;
+ int intra16x16_pred_mode;
+
+ int8_t intra4x4_pred_mode_cache[5*8];
+ int8_t (*intra4x4_pred_mode)[8];
+ void (*pred4x4 [9+3])(uint8_t *src, uint8_t *topright, int stride);//FIXME move to dsp?
+ void (*pred8x8 [4+3])(uint8_t *src, int stride);
+ void (*pred16x16[4+3])(uint8_t *src, int stride);
+ unsigned int topleft_samples_available;
+ unsigned int top_samples_available;
+ unsigned int topright_samples_available;
+ unsigned int left_samples_available;
+
+ /**
+ * non zero coeff count cache.
+ * is 64 if not available.
+ */
+ uint8_t non_zero_count_cache[6*8];
+ uint8_t (*non_zero_count)[16];
+
+ /**
+ * Motion vector cache.
+ */
+ int16_t mv_cache[2][5*8][2];
+ int8_t ref_cache[2][5*8];
+#define LIST_NOT_USED -1 //FIXME rename?
+#define PART_NOT_AVAILABLE -2
+
+ /**
+ * is 1 if the specific list MV&references are set to 0,0,-2.
+ */
+ int mv_cache_clean[2];
+
+ int block_offset[16+8];
+ int chroma_subblock_offset[16]; //FIXME remove
+
+ uint16_t *mb2b_xy; //FIXME are these 4 a good idea?
+ uint16_t *mb2b8_xy;
+ int b_stride;
+ int b8_stride;
+
+ SPS sps_buffer[MAX_SPS_COUNT];
+ SPS sps; ///< current sps
+
+ PPS pps_buffer[MAX_PPS_COUNT];
+ /**
+ * current pps
+ */
+ PPS pps; //FIXME move tp Picture perhaps? (->no) do we need that?
+
+ int slice_num;
+ uint8_t *slice_table_base;
+ uint8_t *slice_table; ///< slice_table_base + mb_stride + 1
+ int slice_type;
+ int slice_type_fixed;
+
+ //interlacing specific flags
+ int mb_field_decoding_flag;
+
+ int sub_mb_type[4];
+
+ //POC stuff
+ int poc_lsb;
+ int poc_msb;
+ int delta_poc_bottom;
+ int delta_poc[2];
+ int frame_num;
+ int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
+ int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
+ int frame_num_offset; ///< for POC type 2
+ int prev_frame_num_offset; ///< for POC type 2
+ int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
+
+ /**
+ * frame_num for frames or 2*frame_num for field pics.
+ */
+ int curr_pic_num;
+
+ /**
+ * max_frame_num or 2*max_frame_num for field pics.
+ */
+ int max_pic_num;
+
+ //Weighted pred stuff
+ int luma_log2_weight_denom;
+ int chroma_log2_weight_denom;
+ int luma_weight[2][16];
+ int luma_offset[2][16];
+ int chroma_weight[2][16][2];
+ int chroma_offset[2][16][2];
+
+ //deblock
+ int disable_deblocking_filter_idc;
+ int slice_alpha_c0_offset_div2;
+ int slice_beta_offset_div2;
+
+ int redundant_pic_count;
+
+ int direct_spatial_mv_pred;
+
+ /**
+ * num_ref_idx_l0/1_active_minus1 + 1
+ */
+ int ref_count[2];// FIXME split for AFF
+ Picture *short_ref[16];
+ Picture *long_ref[16];
+ Picture default_ref_list[2][32];
+ Picture ref_list[2][32]; //FIXME size?
+ Picture field_ref_list[2][32]; //FIXME size?
+
+ /**
+ * memory management control operations buffer.
+ */
+ MMCO mmco[MAX_MMCO_COUNT];
+ int mmco_index;
+
+ int long_ref_count; ///< number of actual long term references
+ int short_ref_count; ///< number of actual short term references
+
+ //data partitioning
+ GetBitContext intra_gb;
+ GetBitContext inter_gb;
+ GetBitContext *intra_gb_ptr;
+ GetBitContext *inter_gb_ptr;
+
+ DCTELEM mb[16*24] __align8;
+}H264Context;
+
+static VLC coeff_token_vlc[4];
+static VLC chroma_dc_coeff_token_vlc;
+
+static VLC total_zeros_vlc[15];
+static VLC chroma_dc_total_zeros_vlc[3];
+
+static VLC run_vlc[6];
+static VLC run7_vlc;
+
+/**
+ * fill a rectangle.
+ * @param h height of the recatangle, should be a constant
+ * @param w width of the recatangle, should be a constant
+ * @param size the size of val (1 or 4), should be a constant
+ */
+static inline void fill_rectangle(void *p, int w, int h, int stride, uint32_t val, int size){ //FIXME ensure this IS inlined
+ assert(size==1 || size==4);
+
+ w *= size;
+ stride *= size;
+
+//FIXME check what gcc generates for 64 bit on x86 and possible write a 32 bit ver of it
+ if(w==2 && h==2){
+ *(uint16_t*)(p + 0)=
+ *(uint16_t*)(p + stride)= size==4 ? val : val*0x0101;
+ }else if(w==2 && h==4){
+ *(uint16_t*)(p + 0*stride)=
+ *(uint16_t*)(p + 1*stride)=
+ *(uint16_t*)(p + 2*stride)=
+ *(uint16_t*)(p + 3*stride)= size==4 ? val : val*0x0101;
+ }else if(w==4 && h==2){
+ *(uint32_t*)(p + 0*stride)=
+ *(uint32_t*)(p + 1*stride)= size==4 ? val : val*0x01010101;
+ }else if(w==4 && h==4){
+ *(uint32_t*)(p + 0*stride)=
+ *(uint32_t*)(p + 1*stride)=
+ *(uint32_t*)(p + 2*stride)=
+ *(uint32_t*)(p + 3*stride)= size==4 ? val : val*0x01010101;
+ }else if(w==8 && h==1){
+ *(uint32_t*)(p + 0)=
+ *(uint32_t*)(p + 4)= size==4 ? val : val*0x01010101;
+ }else if(w==8 && h==2){
+ *(uint32_t*)(p + 0 + 0*stride)=
+ *(uint32_t*)(p + 4 + 0*stride)=
+ *(uint32_t*)(p + 0 + 1*stride)=
+ *(uint32_t*)(p + 4 + 1*stride)= size==4 ? val : val*0x01010101;
+ }else if(w==8 && h==4){
+ *(uint64_t*)(p + 0*stride)=
+ *(uint64_t*)(p + 1*stride)=
+ *(uint64_t*)(p + 2*stride)=
+ *(uint64_t*)(p + 3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
+ }else if(w==16 && h==2){
+ *(uint64_t*)(p + 0+0*stride)=
+ *(uint64_t*)(p + 8+0*stride)=
+ *(uint64_t*)(p + 0+1*stride)=
+ *(uint64_t*)(p + 8+1*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
+ }else if(w==16 && h==4){
+ *(uint64_t*)(p + 0+0*stride)=
+ *(uint64_t*)(p + 8+0*stride)=
+ *(uint64_t*)(p + 0+1*stride)=
+ *(uint64_t*)(p + 8+1*stride)=
+ *(uint64_t*)(p + 0+2*stride)=
+ *(uint64_t*)(p + 8+2*stride)=
+ *(uint64_t*)(p + 0+3*stride)=
+ *(uint64_t*)(p + 8+3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
+ }else
+ assert(0);
+}
+
+static inline void fill_caches(H264Context *h, int mb_type){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= s->mb_x + s->mb_y*h->mb_stride;
+ int topleft_xy, top_xy, topright_xy, left_xy[2];
+ int topleft_type, top_type, topright_type, left_type[2];
+ int left_block[4];
+ int i;
+
+ //wow what a mess, why didnt they simplify the interlacing&intra stuff, i cant imagine that these complex rules are worth it
+
+ if(h->sps.mb_aff){
+ //FIXME
+ }else{
+ topleft_xy = mb_xy-1 - h->mb_stride;
+ top_xy = mb_xy - h->mb_stride;
+ topright_xy= mb_xy+1 - h->mb_stride;
+ left_xy[0] = mb_xy-1;
+ left_xy[1] = mb_xy-1;
+ left_block[0]= 0;
+ left_block[1]= 1;
+ left_block[2]= 2;
+ left_block[3]= 3;
+ }
+
+ topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
+ top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0;
+ topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
+ left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
+ left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
+
+ if(IS_INTRA(mb_type)){
+ h->topleft_samples_available=
+ h->top_samples_available=
+ h->left_samples_available= 0xFFFF;
+ h->topright_samples_available= 0xEEEA;
+
+ if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
+ h->topleft_samples_available= 0xB3FF;
+ h->top_samples_available= 0x33FF;
+ h->topright_samples_available= 0x26EA;
+ }
+ for(i=0; i<2; i++){
+ if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){
+ h->topleft_samples_available&= 0xDF5F;
+ h->left_samples_available&= 0x5F5F;
+ }
+ }
+
+ if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
+ h->topleft_samples_available&= 0x7FFF;
+
+ if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
+ h->topright_samples_available&= 0xFBFF;
+
+ if(IS_INTRA4x4(mb_type)){
+ if(IS_INTRA4x4(top_type)){
+ h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
+ h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
+ h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
+ h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
+ }else{
+ int pred;
+ if(IS_INTRA16x16(top_type) || (IS_INTER(top_type) && !h->pps.constrained_intra_pred))
+ pred= 2;
+ else{
+ pred= -1;
+ }
+ h->intra4x4_pred_mode_cache[4+8*0]=
+ h->intra4x4_pred_mode_cache[5+8*0]=
+ h->intra4x4_pred_mode_cache[6+8*0]=
+ h->intra4x4_pred_mode_cache[7+8*0]= pred;
+ }
+ for(i=0; i<2; i++){
+ if(IS_INTRA4x4(left_type[i])){
+ h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
+ h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
+ }else{
+ int pred;
+ if(IS_INTRA16x16(left_type[i]) || (IS_INTER(left_type[i]) && !h->pps.constrained_intra_pred))
+ pred= 2;
+ else{
+ pred= -1;
+ }
+ h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
+ h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
+ }
+ }
+ }
+ }
+
+
+/*
+0 . T T. T T T T
+1 L . .L . . . .
+2 L . .L . . . .
+3 . T TL . . . .
+4 L . .L . . . .
+5 L . .. . . . .
+*/
+//FIXME constraint_intra_pred & partitioning & nnz (lets hope this is just a typo in the spec)
+ if(top_type){
+ h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][0];
+ h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][1];
+ h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][2];
+ h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
+
+ h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][7];
+ h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
+
+ h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][10];
+ h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
+ }else{
+ h->non_zero_count_cache[4+8*0]=
+ h->non_zero_count_cache[5+8*0]=
+ h->non_zero_count_cache[6+8*0]=
+ h->non_zero_count_cache[7+8*0]=
+
+ h->non_zero_count_cache[1+8*0]=
+ h->non_zero_count_cache[2+8*0]=
+
+ h->non_zero_count_cache[1+8*3]=
+ h->non_zero_count_cache[2+8*3]= 64;
+ }
+
+ if(left_type[0]){
+ h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][6];
+ h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][5];
+ h->non_zero_count_cache[0+8*1]= h->non_zero_count[left_xy[0]][9]; //FIXME left_block
+ h->non_zero_count_cache[0+8*4]= h->non_zero_count[left_xy[0]][12];
+ }else{
+ h->non_zero_count_cache[3+8*1]=
+ h->non_zero_count_cache[3+8*2]=
+ h->non_zero_count_cache[0+8*1]=
+ h->non_zero_count_cache[0+8*4]= 64;
+ }
+
+ if(left_type[1]){
+ h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[1]][4];
+ h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[1]][3];
+ h->non_zero_count_cache[0+8*2]= h->non_zero_count[left_xy[1]][8];
+ h->non_zero_count_cache[0+8*5]= h->non_zero_count[left_xy[1]][11];
+ }else{
+ h->non_zero_count_cache[3+8*3]=
+ h->non_zero_count_cache[3+8*4]=
+ h->non_zero_count_cache[0+8*2]=
+ h->non_zero_count_cache[0+8*5]= 64;
+ }
+
+#if 1
+ if(IS_INTER(mb_type)){
+ int list;
+ for(list=0; list<2; list++){
+ if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list)){
+ /*if(!h->mv_cache_clean[list]){
+ memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
+ memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
+ h->mv_cache_clean[list]= 1;
+ }*/
+ continue; //FIXME direct mode ...
+ }
+ h->mv_cache_clean[list]= 0;
+
+ if(IS_INTER(topleft_type)){
+ const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride;
+ const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + h->b8_stride;
+ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
+ h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
+ }else{
+ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
+ h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+
+ if(IS_INTER(top_type)){
+ const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
+ const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
+ *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
+ *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
+ *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
+ *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
+ h->ref_cache[list][scan8[0] + 0 - 1*8]=
+ h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
+ h->ref_cache[list][scan8[0] + 2 - 1*8]=
+ h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
+ }else{
+ *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
+ *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
+ *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
+ *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
+ *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
+ }
+
+ if(IS_INTER(topright_type)){
+ const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
+ const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
+ *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
+ h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
+ }else{
+ *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
+ h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+
+ //FIXME unify cleanup or sth
+ if(IS_INTER(left_type[0])){
+ const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
+ const int b8_xy= h->mb2b8_xy[left_xy[0]] + 1;
+ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0]];
+ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1]];
+ h->ref_cache[list][scan8[0] - 1 + 0*8]=
+ h->ref_cache[list][scan8[0] - 1 + 1*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0]>>1)];
+ }else{
+ *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 0*8]=
+ *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 1*8]= 0;
+ h->ref_cache[list][scan8[0] - 1 + 0*8]=
+ h->ref_cache[list][scan8[0] - 1 + 1*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+
+ if(IS_INTER(left_type[1])){
+ const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
+ const int b8_xy= h->mb2b8_xy[left_xy[1]] + 1;
+ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[2]];
+ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[3]];
+ h->ref_cache[list][scan8[0] - 1 + 2*8]=
+ h->ref_cache[list][scan8[0] - 1 + 3*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[2]>>1)];
+ }else{
+ *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 2*8]=
+ *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 3*8]= 0;
+ h->ref_cache[list][scan8[0] - 1 + 2*8]=
+ h->ref_cache[list][scan8[0] - 1 + 3*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+
+ h->ref_cache[list][scan8[5 ]+1] =
+ h->ref_cache[list][scan8[7 ]+1] =
+ h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewher else)
+ h->ref_cache[list][scan8[4 ]] =
+ h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
+ *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
+ *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
+ *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else)
+ *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
+ *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
+ }
+//FIXME
+
+ }
+#endif
+}
+
+static inline void write_back_intra_pred_mode(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= s->mb_x + s->mb_y*h->mb_stride;
+
+ h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
+ h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
+ h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
+ h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
+ h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
+ h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
+ h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
+}
+
+/**
+ * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
+ */
+static inline int check_intra4x4_pred_mode(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
+ static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
+ int i;
+
+ if(!(h->top_samples_available&0x8000)){
+ for(i=0; i<4; i++){
+ int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
+ if(status<0){
+ fprintf(stderr, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
+ return -1;
+ } else if(status){
+ h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
+ }
+ }
+ }
+
+ if(!(h->left_samples_available&0x8000)){
+ for(i=0; i<4; i++){
+ int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
+ if(status<0){
+ fprintf(stderr, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
+ return -1;
+ } else if(status){
+ h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
+ }
+ }
+ }
+
+ return 0;
+} //FIXME cleanup like next
+
+/**
+ * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
+ */
+static inline int check_intra_pred_mode(H264Context *h, int mode){
+ MpegEncContext * const s = &h->s;
+ static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
+ static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
+
+ if(!(h->top_samples_available&0x8000)){
+ mode= top[ mode ];
+ if(mode<0){
+ fprintf(stderr, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+ }
+
+ if(!(h->left_samples_available&0x8000)){
+ mode= left[ mode ];
+ if(mode<0){
+ fprintf(stderr, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+ }
+
+ return mode;
+}
+
+/**
+ * gets the predicted intra4x4 prediction mode.
+ */
+static inline int pred_intra_mode(H264Context *h, int n){
+ const int index8= scan8[n];
+ const int left= h->intra4x4_pred_mode_cache[index8 - 1];
+ const int top = h->intra4x4_pred_mode_cache[index8 - 8];
+ const int min= FFMIN(left, top);
+
+#ifdef TRACE
+printf("mode:%d %d min:%d\n", left ,top, min);
+#endif
+
+ if(min<0) return DC_PRED;
+ else return min;
+}
+
+static inline void write_back_non_zero_count(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= s->mb_x + s->mb_y*h->mb_stride;
+
+ h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[4+8*4];
+ h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[5+8*4];
+ h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[6+8*4];
+ h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
+ h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[7+8*3];
+ h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[7+8*2];
+ h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[7+8*1];
+
+ h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[1+8*2];
+ h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
+ h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[2+8*1];
+
+ h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[1+8*5];
+ h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
+ h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[2+8*4];
+}
+
+/**
+ * gets the predicted number of non zero coefficients.
+ * @param n block index
+ */
+static inline int pred_non_zero_count(H264Context *h, int n){
+ const int index8= scan8[n];
+ const int left= h->non_zero_count_cache[index8 - 1];
+ const int top = h->non_zero_count_cache[index8 - 8];
+ int i= left + top;
+
+ if(i<64) i= (i+1)>>1;
+
+#ifdef TRACE
+ printf("pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
+#endif
+
+ return i&31;
+}
+
+/**
+ * gets the predicted MV.
+ * @param n the block index
+ * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
+ * @param mx the x component of the predicted motion vector
+ * @param my the y component of the predicted motion vector
+ */
+static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
+ MpegEncContext * const s = &h->s;
+ const int index8= scan8[n];
+ const int top_ref= h->ref_cache[list][ index8 - 8 ];
+ const int topright_ref= h->ref_cache[list][ index8 - 8 + part_width ];
+ const int left_ref= h->ref_cache[list][ index8 - 1 ];
+ const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
+ const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
+ const int16_t * const C= h->mv_cache[list][ index8 - 8 + part_width ];
+
+ assert(part_width==1 || part_width==2 || part_width==4);
+
+/* mv_cache
+ B . . A T T T T
+ U . . L . . , .
+ U . . L . . . .
+ U . . L . . , .
+ . . . L . . . .
+*/
+ if(topright_ref != PART_NOT_AVAILABLE){
+ if((topright_ref==ref) + (top_ref==ref) + (left_ref==ref) == 1){
+ *mx= A[0] + B[0] + C[0];
+ *my= A[1] + B[1] + C[1];
+ }else{
+ *mx= mid_pred(A[0], B[0], C[0]);
+ *my= mid_pred(A[1], B[1], C[1]);
+ }
+ }else{
+ const int topleft_ref= h->ref_cache[list][ index8 - 9 ];
+ const int16_t * const D= h->mv_cache[list][ index8 - 9 ];
+ if(top_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){ //FIXME check rare FMO case where std isnt clear
+ *mx= A[0];
+ *my= A[1];
+ }else{
+ if((topleft_ref==ref) + (top_ref==ref) + (left_ref==ref) == 1){
+ *mx= A[0] + B[0] + D[0];
+ *my= A[1] + B[1] + D[1];
+ }else{
+ *mx= mid_pred(A[0], B[0], D[0]);
+ *my= mid_pred(A[1], B[1], D[1]);
+ }
+ }
+
+#ifdef TRACE
+printf("topleft: %2d %2d %2d ", topleft_ref, D[0], D[1]);
+#endif
+ }
+#ifdef TRACE
+printf("pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], topright_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, s->mb_x, s->mb_y, n, list);
+#endif
+}
+
+/**
+ * gets the directionally predicted 16x8 MV.
+ * @param n the block index
+ * @param mx the x component of the predicted motion vector
+ * @param my the y component of the predicted motion vector
+ */
+static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
+ MpegEncContext * const s = &h->s;
+ if(n==0){
+ const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
+ const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
+
+#ifdef TRACE
+printf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d", top_ref, B[0], B[1], s->mb_x, s->mb_y, n, list);
+#endif
+
+ if(top_ref == ref){
+ *mx= B[0];
+ *my= B[1];
+ return;
+ }
+ }else{
+ const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
+ const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
+
+#ifdef TRACE
+printf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d", left_ref, A[0], A[1], s->mb_x, s->mb_y, n, list);
+#endif
+
+ if(left_ref == ref){
+ *mx= A[0];
+ *my= A[1];
+ return;
+ }
+ }
+
+ //RARE
+ pred_motion(h, n, 4, list, ref, mx, my);
+}
+
+/**
+ * gets the directionally predicted 8x16 MV.
+ * @param n the block index
+ * @param mx the x component of the predicted motion vector
+ * @param my the y component of the predicted motion vector
+ */
+static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
+ MpegEncContext * const s = &h->s;
+ if(n==0){
+ const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
+ const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
+
+#ifdef TRACE
+printf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d", left_ref, A[0], A[1], s->mb_x, s->mb_y, n, list);
+#endif
+
+ if(left_ref == ref){
+ *mx= A[0];
+ *my= A[1];
+ return;
+ }
+ }else{
+ const int topright_ref= h->ref_cache[list][ scan8[4] - 8 + 2 ];
+ const int16_t * const C= h->mv_cache[list][ scan8[4] - 8 + 2 ];
+
+#ifdef TRACE
+printf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d", topright_ref, C[0], C[1], s->mb_x, s->mb_y, n, list);
+#endif
+
+ if(topright_ref == ref){
+ *mx= C[0];
+ *my= C[1];
+ return;
+ }
+
+ if(topright_ref == PART_NOT_AVAILABLE){ //insanity ...
+ const int topleft_ref= h->ref_cache[list][ scan8[4] - 9 ];
+ const int16_t * const D= h->mv_cache[list][ scan8[4] - 9 ];
+
+#ifdef TRACE
+printf("pred_8x16: insanity (%2d %2d %2d) at %2d %2d %d list %d", topleft_ref, D[0], D[1], s->mb_x, s->mb_y, n, list);
+#endif
+ if(topleft_ref == ref){
+ *mx= D[0];
+ *my= D[1];
+ return;
+ }
+ }
+ }
+
+ //RARE
+ pred_motion(h, n, 2, list, ref, mx, my);
+}
+
+static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
+ MpegEncContext * const s = &h->s;
+ const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
+ const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
+
+#ifdef TRACE
+printf("pred_pskip: (%d) (%d) at %2d %2d", top_ref, left_ref, s->mb_x, s->mb_y);
+#endif
+
+ if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
+ || (top_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
+ || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
+
+ *mx = *my = 0;
+ return;
+ }
+
+ pred_motion(h, 0, 4, 0, 0, mx, my);
+
+ return;
+}
+
+static inline void write_back_motion(H264Context *h, int mb_type){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= s->mb_x + s->mb_y*h->mb_stride;
+ const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
+ const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
+ int list;
+
+ for(list=0; list<2; list++){
+ int y;
+ if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list)){
+ if(1){ //FIXME skip or never read if mb_type doesnt use it
+ for(y=0; y<4; y++){
+ *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]=
+ *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= 0;
+ }
+ for(y=0; y<2; y++){
+ *(uint16_t*)s->current_picture.motion_val[list][b8_xy + y*h->b8_stride]= (LIST_NOT_USED&0xFF)*0x0101;
+ }
+ }
+ continue; //FIXME direct mode ...
+ }
+
+ for(y=0; y<4; y++){
+ *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y];
+ *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y];
+ }
+ for(y=0; y<2; y++){
+ s->current_picture.ref_index[list][b8_xy + 0 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+0 + 16*y];
+ s->current_picture.ref_index[list][b8_xy + 1 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+2 + 16*y];
+ }
+ }
+}
+
+/**
+ * Decodes a network abstraction layer unit.
+ * @param consumed is the number of bytes used as input
+ * @param length is the length of the array
+ * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp ttailing?
+ * @returns decoded bytes, might be src+1 if no escapes
+ */
+static uint8_t *decode_nal(H264Context *h, uint8_t *src, int *dst_length, int *consumed, int length){
+ int i, si, di;
+ uint8_t *dst;
+
+// src[0]&0x80; //forbidden bit
+ h->nal_ref_idc= src[0]>>5;
+ h->nal_unit_type= src[0]&0x1F;
+
+ src++; length--;
+#if 0
+ for(i=0; i<length; i++)
+ printf("%2X ", src[i]);
+#endif
+ for(i=0; i+1<length; i+=2){
+ if(src[i]) continue;
+ if(i>0 && src[i-1]==0) i--;
+ if(i+2<length && src[i+1]==0 && src[i+2]<=3){
+ if(src[i+2]!=3){
+ /* startcode, so we must be past the end */
+ length=i;
+ }
+ break;
+ }
+ }
+
+ if(i>=length-1){ //no escaped 0
+ *dst_length= length;
+ *consumed= length+1; //+1 for the header
+ return src;
+ }
+
+ h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length);
+ dst= h->rbsp_buffer;
+
+//printf("deoding esc\n");
+ si=di=0;
+ while(si<length){
+ //remove escapes (very rare 1:2^22)
+ if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
+ if(src[si+2]==3){ //escape
+ dst[di++]= 0;
+ dst[di++]= 0;
+ si+=3;
+ }else //next start code
+ break;
+ }
+
+ dst[di++]= src[si++];
+ }
+
+ *dst_length= di;
+ *consumed= si + 1;//+1 for the header
+//FIXME store exact number of bits in the getbitcontext (its needed for decoding)
+ return dst;
+}
+
+/**
+ * @param src the data which should be escaped
+ * @param dst the target buffer, dst+1 == src is allowed as a special case
+ * @param length the length of the src data
+ * @param dst_length the length of the dst array
+ * @returns length of escaped data in bytes or -1 if an error occured
+ */
+static int encode_nal(H264Context *h, uint8_t *dst, uint8_t *src, int length, int dst_length){
+ int i, escape_count, si, di;
+ uint8_t *temp;
+
+ assert(length>=0);
+ assert(dst_length>0);
+
+ dst[0]= (h->nal_ref_idc<<5) + h->nal_unit_type;
+
+ if(length==0) return 1;
+
+ escape_count= 0;
+ for(i=0; i<length; i+=2){
+ if(src[i]) continue;
+ if(i>0 && src[i-1]==0)
+ i--;
+ if(i+2<length && src[i+1]==0 && src[i+2]<=3){
+ escape_count++;
+ i+=2;
+ }
+ }
+
+ if(escape_count==0){
+ if(dst+1 != src)
+ memcpy(dst+1, src, length);
+ return length + 1;
+ }
+
+ if(length + escape_count + 1> dst_length)
+ return -1;
+
+ //this should be damn rare (hopefully)
+
+ h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length + escape_count);
+ temp= h->rbsp_buffer;
+//printf("encoding esc\n");
+
+ si= 0;
+ di= 0;
+ while(si < length){
+ if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
+ temp[di++]= 0; si++;
+ temp[di++]= 0; si++;
+ temp[di++]= 3;
+ temp[di++]= src[si++];
+ }
+ else
+ temp[di++]= src[si++];
+ }
+ memcpy(dst+1, temp, length+escape_count);
+
+ assert(di == length+escape_count);
+
+ return di + 1;
+}
+
+/**
+ * write 1,10,100,1000,... for alignment, yes its exactly inverse to mpeg4
+ */
+static void encode_rbsp_trailing(PutBitContext *pb){
+ int length;
+ put_bits(pb, 1, 1);
+ length= (-get_bit_count(pb))&7;
+ if(length) put_bits(pb, length, 0);
+}
+
+/**
+ * identifies the exact end of the bitstream
+ * @return the length of the trailing, or 0 if damaged
+ */
+static int decode_rbsp_trailing(uint8_t *src){
+ int v= *src;
+ int r;
+
+#ifdef TRACE
+printf("rbsp trailing %X\n", v);
+#endif
+
+ for(r=1; r<9; r++){
+ if(v&1) return r;
+ v>>=1;
+ }
+ return 0;
+}
+
+/**
+ * idct tranforms the 16 dc values and dequantize them.
+ * @param qp quantization parameter
+ */
+static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
+ const int qmul= dequant_coeff[qp][0];
+#define stride 16
+ int i;
+ int temp[16]; //FIXME check if this is a good idea
+ static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
+ static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
+
+//memset(block, 64, 2*256);
+//return;
+ for(i=0; i<4; i++){
+ const int offset= y_offset[i];
+ const int z0= block[offset+stride*0] + block[offset+stride*4];
+ const int z1= block[offset+stride*0] - block[offset+stride*4];
+ const int z2= block[offset+stride*1] - block[offset+stride*5];
+ const int z3= block[offset+stride*1] + block[offset+stride*5];
+
+ temp[4*i+0]= z0+z3;
+ temp[4*i+1]= z1+z2;
+ temp[4*i+2]= z1-z2;
+ temp[4*i+3]= z0-z3;
+ }
+
+ for(i=0; i<4; i++){
+ const int offset= x_offset[i];
+ const int z0= temp[4*0+i] + temp[4*2+i];
+ const int z1= temp[4*0+i] - temp[4*2+i];
+ const int z2= temp[4*1+i] - temp[4*3+i];
+ const int z3= temp[4*1+i] + temp[4*3+i];
+
+ block[stride*0 +offset]= ((z0 + z3)*qmul + 2)>>2; //FIXME think about merging this into decode_resdual
+ block[stride*2 +offset]= ((z1 + z2)*qmul + 2)>>2;
+ block[stride*8 +offset]= ((z1 - z2)*qmul + 2)>>2;
+ block[stride*10+offset]= ((z0 - z3)*qmul + 2)>>2;
+ }
+}
+
+/**
+ * dct tranforms the 16 dc values.
+ * @param qp quantization parameter ??? FIXME
+ */
+static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
+// const int qmul= dequant_coeff[qp][0];
+ int i;
+ int temp[16]; //FIXME check if this is a good idea
+ static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
+ static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
+
+ for(i=0; i<4; i++){
+ const int offset= y_offset[i];
+ const int z0= block[offset+stride*0] + block[offset+stride*4];
+ const int z1= block[offset+stride*0] - block[offset+stride*4];
+ const int z2= block[offset+stride*1] - block[offset+stride*5];
+ const int z3= block[offset+stride*1] + block[offset+stride*5];
+
+ temp[4*i+0]= z0+z3;
+ temp[4*i+1]= z1+z2;
+ temp[4*i+2]= z1-z2;
+ temp[4*i+3]= z0-z3;
+ }
+
+ for(i=0; i<4; i++){
+ const int offset= x_offset[i];
+ const int z0= temp[4*0+i] + temp[4*2+i];
+ const int z1= temp[4*0+i] - temp[4*2+i];
+ const int z2= temp[4*1+i] - temp[4*3+i];
+ const int z3= temp[4*1+i] + temp[4*3+i];
+
+ block[stride*0 +offset]= (z0 + z3)>>1;
+ block[stride*2 +offset]= (z1 + z2)>>1;
+ block[stride*8 +offset]= (z1 - z2)>>1;
+ block[stride*10+offset]= (z0 - z3)>>1;
+ }
+}
+#undef xStride
+#undef stride
+
+static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp){
+ const int qmul= dequant_coeff[qp][0];
+ const int stride= 16*2;
+ const int xStride= 16;
+ int a,b,c,d,e;
+
+ a= block[stride*0 + xStride*0];
+ b= block[stride*0 + xStride*1];
+ c= block[stride*1 + xStride*0];
+ d= block[stride*1 + xStride*1];
+
+ e= a-b;
+ a= a+b;
+ b= c-d;
+ c= c+d;
+
+ block[stride*0 + xStride*0]= ((a+c)*qmul + 0)>>1;
+ block[stride*0 + xStride*1]= ((e+b)*qmul + 0)>>1;
+ block[stride*1 + xStride*0]= ((a-c)*qmul + 0)>>1;
+ block[stride*1 + xStride*1]= ((e-b)*qmul + 0)>>1;
+}
+
+static void chroma_dc_dct_c(DCTELEM *block){
+ const int stride= 16*2;
+ const int xStride= 16;
+ int a,b,c,d,e;
+
+ a= block[stride*0 + xStride*0];
+ b= block[stride*0 + xStride*1];
+ c= block[stride*1 + xStride*0];
+ d= block[stride*1 + xStride*1];
+
+ e= a-b;
+ a= a+b;
+ b= c-d;
+ c= c+d;
+
+ block[stride*0 + xStride*0]= (a+c);
+ block[stride*0 + xStride*1]= (e+b);
+ block[stride*1 + xStride*0]= (a-c);
+ block[stride*1 + xStride*1]= (e-b);
+}
+
+/**
+ * gets the chroma qp.
+ */
+static inline int get_chroma_qp(H264Context *h, int qscale){
+
+ return chroma_qp[clip(qscale + h->pps.chroma_qp_index_offset, 0, 51)];
+}
+
+
+/**
+ *
+ */
+static void h264_add_idct_c(uint8_t *dst, DCTELEM *block, int stride){
+ int i;
+ uint8_t *cm = cropTbl + MAX_NEG_CROP;
+
+ block[0] += 32;
+#if 1
+ for(i=0; i<4; i++){
+ const int z0= block[i + 4*0] + block[i + 4*2];
+ const int z1= block[i + 4*0] - block[i + 4*2];
+ const int z2= (block[i + 4*1]>>1) - block[i + 4*3];
+ const int z3= block[i + 4*1] + (block[i + 4*3]>>1);
+
+ block[i + 4*0]= z0 + z3;
+ block[i + 4*1]= z1 + z2;
+ block[i + 4*2]= z1 - z2;
+ block[i + 4*3]= z0 - z3;
+ }
+
+ for(i=0; i<4; i++){
+ const int z0= block[0 + 4*i] + block[2 + 4*i];
+ const int z1= block[0 + 4*i] - block[2 + 4*i];
+ const int z2= (block[1 + 4*i]>>1) - block[3 + 4*i];
+ const int z3= block[1 + 4*i] + (block[3 + 4*i]>>1);
+
+ dst[0 + i*stride]= cm[ dst[0 + i*stride] + ((z0 + z3) >> 6) ];
+ dst[1 + i*stride]= cm[ dst[1 + i*stride] + ((z1 + z2) >> 6) ];
+ dst[2 + i*stride]= cm[ dst[2 + i*stride] + ((z1 - z2) >> 6) ];
+ dst[3 + i*stride]= cm[ dst[3 + i*stride] + ((z0 - z3) >> 6) ];
+ }
+#else
+ for(i=0; i<4; i++){
+ const int z0= block[0 + 4*i] + block[2 + 4*i];
+ const int z1= block[0 + 4*i] - block[2 + 4*i];
+ const int z2= (block[1 + 4*i]>>1) - block[3 + 4*i];
+ const int z3= block[1 + 4*i] + (block[3 + 4*i]>>1);
+
+ block[0 + 4*i]= z0 + z3;
+ block[1 + 4*i]= z1 + z2;
+ block[2 + 4*i]= z1 - z2;
+ block[3 + 4*i]= z0 - z3;
+ }
+
+ for(i=0; i<4; i++){
+ const int z0= block[i + 4*0] + block[i + 4*2];
+ const int z1= block[i + 4*0] - block[i + 4*2];
+ const int z2= (block[i + 4*1]>>1) - block[i + 4*3];
+ const int z3= block[i + 4*1] + (block[i + 4*3]>>1);
+
+ dst[i + 0*stride]= cm[ dst[i + 0*stride] + ((z0 + z3) >> 6) ];
+ dst[i + 1*stride]= cm[ dst[i + 1*stride] + ((z1 + z2) >> 6) ];
+ dst[i + 2*stride]= cm[ dst[i + 2*stride] + ((z1 - z2) >> 6) ];
+ dst[i + 3*stride]= cm[ dst[i + 3*stride] + ((z0 - z3) >> 6) ];
+ }
+#endif
+}
+
+static void h264_diff_dct_c(DCTELEM *block, uint8_t *src1, uint8_t *src2, int stride){
+ int i;
+ //FIXME try int temp instead of block
+
+ for(i=0; i<4; i++){
+ const int d0= src1[0 + i*stride] - src2[0 + i*stride];
+ const int d1= src1[1 + i*stride] - src2[1 + i*stride];
+ const int d2= src1[2 + i*stride] - src2[2 + i*stride];
+ const int d3= src1[3 + i*stride] - src2[3 + i*stride];
+ const int z0= d0 + d3;
+ const int z3= d0 - d3;
+ const int z1= d1 + d2;
+ const int z2= d1 - d2;
+
+ block[0 + 4*i]= z0 + z1;
+ block[1 + 4*i]= 2*z3 + z2;
+ block[2 + 4*i]= z0 - z1;
+ block[3 + 4*i]= z3 - 2*z2;
+ }
+
+ for(i=0; i<4; i++){
+ const int z0= block[0*4 + i] + block[3*4 + i];
+ const int z3= block[0*4 + i] - block[3*4 + i];
+ const int z1= block[1*4 + i] + block[2*4 + i];
+ const int z2= block[1*4 + i] - block[2*4 + i];
+
+ block[0*4 + i]= z0 + z1;
+ block[1*4 + i]= 2*z3 + z2;
+ block[2*4 + i]= z0 - z1;
+ block[3*4 + i]= z3 - 2*z2;
+ }
+}
+
+//FIXME need to check that this doesnt overflow signed 32 bit for low qp, iam not sure, its very close
+//FIXME check that gcc inlines this (and optimizes intra & seperate_dc stuff away)
+static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int seperate_dc){
+ int i;
+ const int * const quant_table= quant_coeff[qscale];
+ const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
+ const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
+ const unsigned int threshold2= (threshold1<<1);
+ int last_non_zero;
+
+ if(seperate_dc){
+ if(qscale<=18){
+ //avoid overflows
+ const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
+ const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
+ const unsigned int dc_threshold2= (dc_threshold1<<1);
+
+ int level= block[0]*quant_coeff[qscale+18][0];
+ if(((unsigned)(level+dc_threshold1))>dc_threshold2){
+ if(level>0){
+ level= (dc_bias + level)>>(QUANT_SHIFT-2);
+ block[0]= level;
+ }else{
+ level= (dc_bias - level)>>(QUANT_SHIFT-2);
+ block[0]= -level;
+ }
+// last_non_zero = i;
+ }else{
+ block[0]=0;
+ }
+ }else{
+ const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
+ const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
+ const unsigned int dc_threshold2= (dc_threshold1<<1);
+
+ int level= block[0]*quant_table[0];
+ if(((unsigned)(level+dc_threshold1))>dc_threshold2){
+ if(level>0){
+ level= (dc_bias + level)>>(QUANT_SHIFT+1);
+ block[0]= level;
+ }else{
+ level= (dc_bias - level)>>(QUANT_SHIFT+1);
+ block[0]= -level;
+ }
+// last_non_zero = i;
+ }else{
+ block[0]=0;
+ }
+ }
+ last_non_zero= 0;
+ i=1;
+ }else{
+ last_non_zero= -1;
+ i=0;
+ }
+
+ for(; i<16; i++){
+ const int j= scantable[i];
+ int level= block[j]*quant_table[j];
+
+// if( bias+level >= (1<<(QMAT_SHIFT - 3))
+// || bias-level >= (1<<(QMAT_SHIFT - 3))){
+ if(((unsigned)(level+threshold1))>threshold2){
+ if(level>0){
+ level= (bias + level)>>QUANT_SHIFT;
+ block[j]= level;
+ }else{
+ level= (bias - level)>>QUANT_SHIFT;
+ block[j]= -level;
+ }
+ last_non_zero = i;
+ }else{
+ block[j]=0;
+ }
+ }
+
+ return last_non_zero;
+}
+
+static void pred4x4_vertical_c(uint8_t *src, uint8_t *topright, int stride){
+ const uint32_t a= ((uint32_t*)(src-stride))[0];
+ ((uint32_t*)(src+0*stride))[0]= a;
+ ((uint32_t*)(src+1*stride))[0]= a;
+ ((uint32_t*)(src+2*stride))[0]= a;
+ ((uint32_t*)(src+3*stride))[0]= a;
+}
+
+static void pred4x4_horizontal_c(uint8_t *src, uint8_t *topright, int stride){
+ ((uint32_t*)(src+0*stride))[0]= src[-1+0*stride]*0x01010101;
+ ((uint32_t*)(src+1*stride))[0]= src[-1+1*stride]*0x01010101;
+ ((uint32_t*)(src+2*stride))[0]= src[-1+2*stride]*0x01010101;
+ ((uint32_t*)(src+3*stride))[0]= src[-1+3*stride]*0x01010101;
+}
+
+static void pred4x4_dc_c(uint8_t *src, uint8_t *topright, int stride){
+ const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride]
+ + src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 4) >>3;
+
+ ((uint32_t*)(src+0*stride))[0]=
+ ((uint32_t*)(src+1*stride))[0]=
+ ((uint32_t*)(src+2*stride))[0]=
+ ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
+}
+
+static void pred4x4_left_dc_c(uint8_t *src, uint8_t *topright, int stride){
+ const int dc= ( src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 2) >>2;
+
+ ((uint32_t*)(src+0*stride))[0]=
+ ((uint32_t*)(src+1*stride))[0]=
+ ((uint32_t*)(src+2*stride))[0]=
+ ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
+}
+
+static void pred4x4_top_dc_c(uint8_t *src, uint8_t *topright, int stride){
+ const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + 2) >>2;
+
+ ((uint32_t*)(src+0*stride))[0]=
+ ((uint32_t*)(src+1*stride))[0]=
+ ((uint32_t*)(src+2*stride))[0]=
+ ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
+}
+
+static void pred4x4_128_dc_c(uint8_t *src, uint8_t *topright, int stride){
+ ((uint32_t*)(src+0*stride))[0]=
+ ((uint32_t*)(src+1*stride))[0]=
+ ((uint32_t*)(src+2*stride))[0]=
+ ((uint32_t*)(src+3*stride))[0]= 128U*0x01010101U;
+}
+
+
+#define LOAD_TOP_RIGHT_EDGE\
+ const int t4= topright[0];\
+ const int t5= topright[1];\
+ const int t6= topright[2];\
+ const int t7= topright[3];\
+
+#define LOAD_LEFT_EDGE\
+ const int l0= src[-1+0*stride];\
+ const int l1= src[-1+1*stride];\
+ const int l2= src[-1+2*stride];\
+ const int l3= src[-1+3*stride];\
+
+#define LOAD_TOP_EDGE\
+ const int t0= src[ 0-1*stride];\
+ const int t1= src[ 1-1*stride];\
+ const int t2= src[ 2-1*stride];\
+ const int t3= src[ 3-1*stride];\
+
+static void pred4x4_down_right_c(uint8_t *src, uint8_t *topright, int stride){
+ const int lt= src[-1-1*stride];
+ LOAD_TOP_EDGE
+ LOAD_LEFT_EDGE
+
+ src[0+3*stride]=(l3 + 2*l2 + l1 + 2)>>2;
+ src[0+2*stride]=
+ src[1+3*stride]=(l2 + 2*l1 + l0 + 2)>>2;
+ src[0+1*stride]=
+ src[1+2*stride]=
+ src[2+3*stride]=(l1 + 2*l0 + lt + 2)>>2;
+ src[0+0*stride]=
+ src[1+1*stride]=
+ src[2+2*stride]=
+ src[3+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
+ src[1+0*stride]=
+ src[2+1*stride]=
+ src[3+2*stride]=(lt + 2*t0 + t1 + 2)>>2;
+ src[2+0*stride]=
+ src[3+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
+ src[3+0*stride]=(t1 + 2*t2 + t3 + 2)>>2;
+};
+
+static void pred4x4_down_left_c(uint8_t *src, uint8_t *topright, int stride){
+ LOAD_TOP_EDGE
+ LOAD_TOP_RIGHT_EDGE
+// LOAD_LEFT_EDGE
+
+ src[0+0*stride]=(t0 + t2 + 2*t1 + 2)>>2;
+ src[1+0*stride]=
+ src[0+1*stride]=(t1 + t3 + 2*t2 + 2)>>2;
+ src[2+0*stride]=
+ src[1+1*stride]=
+ src[0+2*stride]=(t2 + t4 + 2*t3 + 2)>>2;
+ src[3+0*stride]=
+ src[2+1*stride]=
+ src[1+2*stride]=
+ src[0+3*stride]=(t3 + t5 + 2*t4 + 2)>>2;
+ src[3+1*stride]=
+ src[2+2*stride]=
+ src[1+3*stride]=(t4 + t6 + 2*t5 + 2)>>2;
+ src[3+2*stride]=
+ src[2+3*stride]=(t5 + t7 + 2*t6 + 2)>>2;
+ src[3+3*stride]=(t6 + 3*t7 + 2)>>2;
+};
+
+static void pred4x4_vertical_right_c(uint8_t *src, uint8_t *topright, int stride){
+ const int lt= src[-1-1*stride];
+ LOAD_TOP_EDGE
+ LOAD_LEFT_EDGE
+ const __attribute__((unused)) int unu= l3;
+
+ src[0+0*stride]=
+ src[1+2*stride]=(lt + t0 + 1)>>1;
+ src[1+0*stride]=
+ src[2+2*stride]=(t0 + t1 + 1)>>1;
+ src[2+0*stride]=
+ src[3+2*stride]=(t1 + t2 + 1)>>1;
+ src[3+0*stride]=(t2 + t3 + 1)>>1;
+ src[0+1*stride]=
+ src[1+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
+ src[1+1*stride]=
+ src[2+3*stride]=(lt + 2*t0 + t1 + 2)>>2;
+ src[2+1*stride]=
+ src[3+3*stride]=(t0 + 2*t1 + t2 + 2)>>2;
+ src[3+1*stride]=(t1 + 2*t2 + t3 + 2)>>2;
+ src[0+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
+ src[0+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
+};
+
+static void pred4x4_vertical_left_c(uint8_t *src, uint8_t *topright, int stride){
+ LOAD_TOP_EDGE
+ LOAD_TOP_RIGHT_EDGE
+ const __attribute__((unused)) int unu= t7;
+
+ src[0+0*stride]=(t0 + t1 + 1)>>1;
+ src[1+0*stride]=
+ src[0+2*stride]=(t1 + t2 + 1)>>1;
+ src[2+0*stride]=
+ src[1+2*stride]=(t2 + t3 + 1)>>1;
+ src[3+0*stride]=
+ src[2+2*stride]=(t3 + t4+ 1)>>1;
+ src[3+2*stride]=(t4 + t5+ 1)>>1;
+ src[0+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
+ src[1+1*stride]=
+ src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2;
+ src[2+1*stride]=
+ src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2;
+ src[3+1*stride]=
+ src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2;
+ src[3+3*stride]=(t4 + 2*t5 + t6 + 2)>>2;
+};
+
+static void pred4x4_horizontal_up_c(uint8_t *src, uint8_t *topright, int stride){
+ LOAD_LEFT_EDGE
+
+ src[0+0*stride]=(l0 + l1 + 1)>>1;
+ src[1+0*stride]=(l0 + 2*l1 + l2 + 2)>>2;
+ src[2+0*stride]=
+ src[0+1*stride]=(l1 + l2 + 1)>>1;
+ src[3+0*stride]=
+ src[1+1*stride]=(l1 + 2*l2 + l3 + 2)>>2;
+ src[2+1*stride]=
+ src[0+2*stride]=(l2 + l3 + 1)>>1;
+ src[3+1*stride]=
+ src[1+2*stride]=(l2 + 2*l3 + l3 + 2)>>2;
+ src[3+2*stride]=
+ src[1+3*stride]=
+ src[0+3*stride]=
+ src[2+2*stride]=
+ src[2+3*stride]=
+ src[3+3*stride]=l3;
+};
+
+static void pred4x4_horizontal_down_c(uint8_t *src, uint8_t *topright, int stride){
+ const int lt= src[-1-1*stride];
+ LOAD_TOP_EDGE
+ LOAD_LEFT_EDGE
+ const __attribute__((unused)) int unu= t3;
+
+ src[0+0*stride]=
+ src[2+1*stride]=(lt + l0 + 1)>>1;
+ src[1+0*stride]=
+ src[3+1*stride]=(l0 + 2*lt + t0 + 2)>>2;
+ src[2+0*stride]=(lt + 2*t0 + t1 + 2)>>2;
+ src[3+0*stride]=(t0 + 2*t1 + t2 + 2)>>2;
+ src[0+1*stride]=
+ src[2+2*stride]=(l0 + l1 + 1)>>1;
+ src[1+1*stride]=
+ src[3+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
+ src[0+2*stride]=
+ src[2+3*stride]=(l1 + l2+ 1)>>1;
+ src[1+2*stride]=
+ src[3+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
+ src[0+3*stride]=(l2 + l3 + 1)>>1;
+ src[1+3*stride]=(l1 + 2*l2 + l3 + 2)>>2;
+};
+
+static void pred16x16_vertical_c(uint8_t *src, int stride){
+ int i;
+ const uint32_t a= ((uint32_t*)(src-stride))[0];
+ const uint32_t b= ((uint32_t*)(src-stride))[1];
+ const uint32_t c= ((uint32_t*)(src-stride))[2];
+ const uint32_t d= ((uint32_t*)(src-stride))[3];
+
+ for(i=0; i<16; i++){
+ ((uint32_t*)(src+i*stride))[0]= a;
+ ((uint32_t*)(src+i*stride))[1]= b;
+ ((uint32_t*)(src+i*stride))[2]= c;
+ ((uint32_t*)(src+i*stride))[3]= d;
+ }
+}
+
+static void pred16x16_horizontal_c(uint8_t *src, int stride){
+ int i;
+
+ for(i=0; i<16; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]=
+ ((uint32_t*)(src+i*stride))[2]=
+ ((uint32_t*)(src+i*stride))[3]= src[-1+i*stride]*0x01010101;
+ }
+}
+
+static void pred16x16_dc_c(uint8_t *src, int stride){
+ int i, dc=0;
+
+ for(i=0;i<16; i++){
+ dc+= src[-1+i*stride];
+ }
+
+ for(i=0;i<16; i++){
+ dc+= src[i-stride];
+ }
+
+ dc= 0x01010101*((dc + 16)>>5);
+
+ for(i=0; i<16; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]=
+ ((uint32_t*)(src+i*stride))[2]=
+ ((uint32_t*)(src+i*stride))[3]= dc;
+ }
+}
+
+static void pred16x16_left_dc_c(uint8_t *src, int stride){
+ int i, dc=0;
+
+ for(i=0;i<16; i++){
+ dc+= src[-1+i*stride];
+ }
+
+ dc= 0x01010101*((dc + 8)>>4);
+
+ for(i=0; i<16; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]=
+ ((uint32_t*)(src+i*stride))[2]=
+ ((uint32_t*)(src+i*stride))[3]= dc;
+ }
+}
+
+static void pred16x16_top_dc_c(uint8_t *src, int stride){
+ int i, dc=0;
+
+ for(i=0;i<16; i++){
+ dc+= src[i-stride];
+ }
+ dc= 0x01010101*((dc + 8)>>4);
+
+ for(i=0; i<16; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]=
+ ((uint32_t*)(src+i*stride))[2]=
+ ((uint32_t*)(src+i*stride))[3]= dc;
+ }
+}
+
+static void pred16x16_128_dc_c(uint8_t *src, int stride){
+ int i;
+
+ for(i=0; i<16; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]=
+ ((uint32_t*)(src+i*stride))[2]=
+ ((uint32_t*)(src+i*stride))[3]= 0x01010101U*128U;
+ }
+}
+
+static void pred16x16_plane_c(uint8_t *src, int stride){
+ uint8_t *cm = cropTbl + MAX_NEG_CROP;
+ int i, dx, dy, dc;
+ int temp[16];
+
+ dc= 16*(src[15-stride] + src[-1+15*stride]);
+
+ dx=dy=0;
+ for(i=1; i<9; i++){
+ dx += i*(src[7+i-stride] - src[7-i-stride]);
+ dy += i*(src[-1+(7+i)*stride] - src[-1+(7-i)*stride]);
+ }
+ dx= (5*dx+32)>>6;
+ dy= (5*dy+32)>>6;
+
+ dc += 16;
+
+ //FIXME modifiy dc,dx,dy to avoid -7
+
+ for(i=0; i<16; i++)
+ temp[i]= dx*(i-7) + dc;
+
+ if( (dc - ABS(dx)*8 - ABS(dy)*8)>>5 < 0
+ || (dc + ABS(dx)*8 + ABS(dy)*8)>>5 > 255){
+
+ for(i=0; i<16; i++){
+ int j;
+ for(j=0; j<16; j++)
+ src[j + i*stride]= cm[ (temp[j] + dy*(i-7))>>5 ];
+ }
+ }else{
+ for(i=0; i<16; i++){
+ int j;
+ for(j=0; j<16; j++)
+ src[j + i*stride]= (temp[j] + dy*(i-7))>>5;
+ }
+ }
+}
+
+static void pred8x8_vertical_c(uint8_t *src, int stride){
+ int i;
+ const uint32_t a= ((uint32_t*)(src-stride))[0];
+ const uint32_t b= ((uint32_t*)(src-stride))[1];
+
+ for(i=0; i<8; i++){
+ ((uint32_t*)(src+i*stride))[0]= a;
+ ((uint32_t*)(src+i*stride))[1]= b;
+ }
+}
+
+static void pred8x8_horizontal_c(uint8_t *src, int stride){
+ int i;
+
+ for(i=0; i<8; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]= src[-1+i*stride]*0x01010101;
+ }
+}
+
+static void pred8x8_128_dc_c(uint8_t *src, int stride){
+ int i;
+
+ for(i=0; i<4; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
+ }
+ for(i=4; i<8; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
+ }
+}
+
+static void pred8x8_left_dc_c(uint8_t *src, int stride){
+ int i;
+ int dc0, dc2;
+
+ dc0=dc2=0;
+ for(i=0;i<4; i++){
+ dc0+= src[-1+i*stride];
+ dc2+= src[-1+(i+4)*stride];
+ }
+ dc0= 0x01010101*((dc0 + 2)>>2);
+ dc2= 0x01010101*((dc2 + 2)>>2);
+
+ for(i=0; i<4; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]= dc0;
+ }
+ for(i=4; i<8; i++){
+ ((uint32_t*)(src+i*stride))[0]=
+ ((uint32_t*)(src+i*stride))[1]= dc2;
+ }
+}
+
+static void pred8x8_top_dc_c(uint8_t *src, int stride){
+ int i;
+ int dc0, dc1;
+
+ dc0=dc1=0;
+ for(i=0;i<4; i++){
+ dc0+= src[i-stride];
+ dc1+= src[4+i-stride];
+ }
+ dc0= 0x01010101*((dc0 + 2)>>2);
+ dc1= 0x01010101*((dc1 + 2)>>2);
+
+ for(i=0; i<4; i++){
+ ((uint32_t*)(src+i*stride))[0]= dc0;
+ ((uint32_t*)(src+i*stride))[1]= dc1;
+ }
+ for(i=4; i<8; i++){
+ ((uint32_t*)(src+i*stride))[0]= dc0;
+ ((uint32_t*)(src+i*stride))[1]= dc1;
+ }
+}
+
+
+static void pred8x8_dc_c(uint8_t *src, int stride){
+ int i;
+ int dc0, dc1, dc2, dc3;
+
+ dc0=dc1=dc2=0;
+ for(i=0;i<4; i++){
+ dc0+= src[-1+i*stride] + src[i-stride];
+ dc1+= src[4+i-stride];
+ dc2+= src[-1+(i+4)*stride];
+ }
+ dc3= 0x01010101*((dc1 + dc2 + 4)>>3);
+ dc0= 0x01010101*((dc0 + 4)>>3);
+ dc1= 0x01010101*((dc1 + 2)>>2);
+ dc2= 0x01010101*((dc2 + 2)>>2);
+
+ for(i=0; i<4; i++){
+ ((uint32_t*)(src+i*stride))[0]= dc0;
+ ((uint32_t*)(src+i*stride))[1]= dc1;
+ }
+ for(i=4; i<8; i++){
+ ((uint32_t*)(src+i*stride))[0]= dc2;
+ ((uint32_t*)(src+i*stride))[1]= dc3;
+ }
+}
+
+static void pred8x8_plane_c(uint8_t *src, int stride){
+ uint8_t *cm = cropTbl + MAX_NEG_CROP;
+ int i, dx, dy, dc;
+ int temp[8];
+
+ dc= 16*(src[7-stride] + src[-1+7*stride]);
+
+ dx=dy=0;
+ for(i=1; i<5; i++){
+ dx += i*(src[3+i-stride] - src[3-i-stride]);
+ dy += i*(src[-1+(3+i)*stride] - src[-1+(3-i)*stride]);
+ }
+ dx= (17*dx+16)>>5;
+ dy= (17*dy+16)>>5;
+
+ dc += 16;
+
+ //FIXME modifiy dc,dx,dy to avoid -3
+
+ for(i=0; i<8; i++)
+ temp[i]= dx*(i-3) + dc;
+
+ if( (dc - ABS(dx)*4 - ABS(dy)*4)>>5 < 0
+ || (dc + ABS(dx)*4 + ABS(dy)*4)>>5 > 255){
+
+ for(i=0; i<8; i++){
+ int j;
+ for(j=0; j<8; j++)
+ src[j + i*stride]= cm[ (temp[j] + dy*(i-3))>>5 ];
+ }
+ }else{
+ for(i=0; i<8; i++){
+ int j;
+ for(j=0; j<8; j++)
+ src[j + i*stride]= (temp[j] + dy*(i-3))>>5;
+ }
+ }
+}
+
+static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
+ uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+ int src_x_offset, int src_y_offset,
+ qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
+ MpegEncContext * const s = &h->s;
+ const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
+ const int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
+ const int luma_xy= (mx&3) + ((my&3)<<2);
+ uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*s->linesize;
+ uint8_t * src_cb= pic->data[1] + (mx>>3) + (my>>3)*s->uvlinesize;
+ uint8_t * src_cr= pic->data[2] + (mx>>3) + (my>>3)*s->uvlinesize;
+ int extra_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; //FIXME increase edge?, IMHO not worth it
+ int extra_height= extra_width;
+ int emu=0;
+ const int full_mx= mx>>2;
+ const int full_my= my>>2;
+
+ assert(pic->data[0]);
+
+ if(mx&7) extra_width -= 3;
+ if(my&7) extra_height -= 3;
+
+ if( full_mx < 0-extra_width
+ || full_my < 0-extra_height
+ || full_mx + 16/*FIXME*/ > s->width + extra_width
+ || full_my + 16/*FIXME*/ > s->height + extra_height){
+ ff_emulated_edge_mc(s, src_y - 2 - 2*s->linesize, s->linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, s->width, s->height);
+ src_y= s->edge_emu_buffer + 2 + 2*s->linesize;
+ emu=1;
+ }
+
+ qpix_op[luma_xy](dest_y, src_y, s->linesize); //FIXME try variable height perhaps?
+ if(!square){
+ qpix_op[luma_xy](dest_y + delta, src_y + delta, s->linesize);
+ }
+
+ if(s->flags&CODEC_FLAG_GRAY) return;
+
+ if(emu){
+ ff_emulated_edge_mc(s, src_cb, s->uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), s->width>>1, s->height>>1);
+ src_cb= s->edge_emu_buffer;
+ }
+ chroma_op(dest_cb, src_cb, s->uvlinesize, chroma_height, mx&7, my&7);
+
+ if(emu){
+ ff_emulated_edge_mc(s, src_cr, s->uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), s->width>>1, s->height>>1);
+ src_cr= s->edge_emu_buffer;
+ }
+ chroma_op(dest_cr, src_cr, s->uvlinesize, chroma_height, mx&7, my&7);
+}
+
+static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
+ uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+ int x_offset, int y_offset,
+ qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
+ qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
+ int list0, int list1){
+ MpegEncContext * const s = &h->s;
+ qpel_mc_func *qpix_op= qpix_put;
+ h264_chroma_mc_func chroma_op= chroma_put;
+
+ dest_y += 2*x_offset + 2*y_offset*s-> linesize;
+ dest_cb += x_offset + y_offset*s->uvlinesize;
+ dest_cr += x_offset + y_offset*s->uvlinesize;
+ x_offset += 8*s->mb_x;
+ y_offset += 8*s->mb_y;
+
+ if(list0){
+ Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[0] ] ];
+ mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
+ dest_y, dest_cb, dest_cr, x_offset, y_offset,
+ qpix_op, chroma_op);
+
+ qpix_op= qpix_avg;
+ chroma_op= chroma_avg;
+ }
+
+ if(list1){
+ Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[0] ] ];
+ mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
+ dest_y, dest_cb, dest_cr, x_offset, y_offset,
+ qpix_op, chroma_op);
+ }
+}
+
+static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+ qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
+ qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg)){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= s->mb_x + s->mb_y*h->mb_stride;
+ const int mb_type= s->current_picture.mb_type[mb_xy];
+
+ assert(IS_INTER(mb_type));
+
+ if(IS_16X16(mb_type)){
+ mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
+ qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
+ IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
+ }else if(IS_16X8(mb_type)){
+ mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
+ qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
+ IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
+ mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
+ qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
+ IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
+ }else if(IS_8X16(mb_type)){
+ mc_part(h, 0, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 0, 0,
+ qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
+ IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
+ mc_part(h, 4, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 4, 0,
+ qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
+ IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
+ }else{
+ int i;
+
+ assert(IS_8X8(mb_type));
+
+ for(i=0; i<4; i++){
+ const int sub_mb_type= h->sub_mb_type[i];
+ const int n= 4*i;
+ int x_offset= (i&1)<<2;
+ int y_offset= (i&2)<<1;
+
+ if(IS_SUB_8X8(sub_mb_type)){
+ mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
+ qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
+ IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
+ }else if(IS_SUB_8X4(sub_mb_type)){
+ mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
+ qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
+ IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
+ mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
+ qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
+ IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
+ }else if(IS_SUB_4X8(sub_mb_type)){
+ mc_part(h, n , 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
+ qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
+ IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
+ mc_part(h, n+1, 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
+ qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
+ IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
+ }else{
+ int j;
+ assert(IS_SUB_4X4(sub_mb_type));
+ for(j=0; j<4; j++){
+ int sub_x_offset= x_offset + 2*(j&1);
+ int sub_y_offset= y_offset + (j&2);
+ mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
+ qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
+ IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
+ }
+ }
+ }
+ }
+}
+
+static void decode_init_vlc(H264Context *h){
+ static int done = 0;
+
+ if (!done) {
+ int i;
+ done = 1;
+
+ init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
+ &chroma_dc_coeff_token_len [0], 1, 1,
+ &chroma_dc_coeff_token_bits[0], 1, 1);
+
+ for(i=0; i<4; i++){
+ init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
+ &coeff_token_len [i][0], 1, 1,
+ &coeff_token_bits[i][0], 1, 1);
+ }
+
+ for(i=0; i<3; i++){
+ init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
+ &chroma_dc_total_zeros_len [i][0], 1, 1,
+ &chroma_dc_total_zeros_bits[i][0], 1, 1);
+ }
+ for(i=0; i<15; i++){
+ init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16,
+ &total_zeros_len [i][0], 1, 1,
+ &total_zeros_bits[i][0], 1, 1);
+ }
+
+ for(i=0; i<6; i++){
+ init_vlc(&run_vlc[i], RUN_VLC_BITS, 7,
+ &run_len [i][0], 1, 1,
+ &run_bits[i][0], 1, 1);
+ }
+ init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
+ &run_len [6][0], 1, 1,
+ &run_bits[6][0], 1, 1);
+ }
+}
+
+/**
+ * Sets the intra prediction function pointers.
+ */
+static void init_pred_ptrs(H264Context *h){
+// MpegEncContext * const s = &h->s;
+
+ h->pred4x4[VERT_PRED ]= pred4x4_vertical_c;
+ h->pred4x4[HOR_PRED ]= pred4x4_horizontal_c;
+ h->pred4x4[DC_PRED ]= pred4x4_dc_c;
+ h->pred4x4[DIAG_DOWN_LEFT_PRED ]= pred4x4_down_left_c;
+ h->pred4x4[DIAG_DOWN_RIGHT_PRED]= pred4x4_down_right_c;
+ h->pred4x4[VERT_RIGHT_PRED ]= pred4x4_vertical_right_c;
+ h->pred4x4[HOR_DOWN_PRED ]= pred4x4_horizontal_down_c;
+ h->pred4x4[VERT_LEFT_PRED ]= pred4x4_vertical_left_c;
+ h->pred4x4[HOR_UP_PRED ]= pred4x4_horizontal_up_c;
+ h->pred4x4[LEFT_DC_PRED ]= pred4x4_left_dc_c;
+ h->pred4x4[TOP_DC_PRED ]= pred4x4_top_dc_c;
+ h->pred4x4[DC_128_PRED ]= pred4x4_128_dc_c;
+
+ h->pred8x8[DC_PRED8x8 ]= pred8x8_dc_c;
+ h->pred8x8[VERT_PRED8x8 ]= pred8x8_vertical_c;
+ h->pred8x8[HOR_PRED8x8 ]= pred8x8_horizontal_c;
+ h->pred8x8[PLANE_PRED8x8 ]= pred8x8_plane_c;
+ h->pred8x8[LEFT_DC_PRED8x8]= pred8x8_left_dc_c;
+ h->pred8x8[TOP_DC_PRED8x8 ]= pred8x8_top_dc_c;
+ h->pred8x8[DC_128_PRED8x8 ]= pred8x8_128_dc_c;
+
+ h->pred16x16[DC_PRED8x8 ]= pred16x16_dc_c;
+ h->pred16x16[VERT_PRED8x8 ]= pred16x16_vertical_c;
+ h->pred16x16[HOR_PRED8x8 ]= pred16x16_horizontal_c;
+ h->pred16x16[PLANE_PRED8x8 ]= pred16x16_plane_c;
+ h->pred16x16[LEFT_DC_PRED8x8]= pred16x16_left_dc_c;
+ h->pred16x16[TOP_DC_PRED8x8 ]= pred16x16_top_dc_c;
+ h->pred16x16[DC_128_PRED8x8 ]= pred16x16_128_dc_c;
+}
+
+//FIXME factorize
+#define CHECKED_ALLOCZ(p, size)\
+{\
+ p= av_mallocz(size);\
+ if(p==NULL){\
+ perror("malloc");\
+ goto fail;\
+ }\
+}
+
+static void free_tables(H264Context *h){
+ MpegEncContext * const s = &h->s;
+
+ av_freep(&h->intra4x4_pred_mode);
+ av_freep(&h->non_zero_count);
+ av_freep(&h->slice_table_base);
+ h->slice_table= NULL;
+
+ av_freep(&h->mb2b_xy);
+ av_freep(&h->mb2b8_xy);
+}
+
+/**
+ * allocates tables.
+ * needs widzh/height
+ */
+static int alloc_tables(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int big_mb_num= h->mb_stride * (s->mb_height+1);
+ int x,y;
+
+ CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t))
+ CHECKED_ALLOCZ(h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t))
+ CHECKED_ALLOCZ(h->slice_table_base , big_mb_num * sizeof(uint8_t))
+
+ memset(h->slice_table_base, -1, big_mb_num * sizeof(uint8_t));
+ h->slice_table= h->slice_table_base + h->mb_stride + 1;
+
+ CHECKED_ALLOCZ(h->mb2b_xy , big_mb_num * sizeof(uint16_t));
+ CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint16_t));
+ for(y=0; y<s->mb_height; y++){
+ for(x=0; x<s->mb_width; x++){
+ const int mb_xy= x + y*h->mb_stride;
+ const int b_xy = 4*x + 4*y*h->b_stride;
+ const int b8_xy= 2*x + 2*y*h->b8_stride;
+
+ h->mb2b_xy [mb_xy]= b_xy;
+ h->mb2b8_xy[mb_xy]= b8_xy;
+ }
+ }
+
+ return 0;
+fail:
+ free_tables(h);
+ return -1;
+}
+
+static void common_init(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int i;
+
+ s->width = s->avctx->width;
+ s->height = s->avctx->height;
+ s->codec_id= s->avctx->codec->id;
+
+ init_pred_ptrs(h);
+
+ s->decode=1; //FIXME
+}
+
+static int decode_init(AVCodecContext *avctx){
+ H264Context *h= avctx->priv_data;
+ MpegEncContext * const s = &h->s;
+
+ s->avctx = avctx;
+ common_init(h);
+
+ s->out_format = FMT_H264;
+ s->workaround_bugs= avctx->workaround_bugs;
+
+ // set defaults
+ s->progressive_sequence=1;
+// s->decode_mb= ff_h263_decode_mb;
+ s->low_delay= 1;
+ avctx->pix_fmt= PIX_FMT_YUV420P;
+
+ decode_init_vlc(h);
+
+ return 0;
+}
+
+static void frame_start(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int i;
+
+ MPV_frame_start(s, s->avctx);
+ ff_er_frame_start(s);
+ h->mmco_index=0;
+
+ assert(s->linesize && s->uvlinesize);
+
+ for(i=0; i<16; i++){
+ h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
+ h->chroma_subblock_offset[i]= 2*((scan8[i] - scan8[0])&7) + 2*s->uvlinesize*((scan8[i] - scan8[0])>>3);
+ }
+ for(i=0; i<4; i++){
+ h->block_offset[16+i]=
+ h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
+ }
+
+// s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
+}
+
+static void hl_decode_mb(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int mb_x= s->mb_x;
+ const int mb_y= s->mb_y;
+ const int mb_xy= mb_x + mb_y*h->mb_stride;
+ const int mb_type= s->current_picture.mb_type[mb_xy];
+ uint8_t *dest_y, *dest_cb, *dest_cr;
+ int linesize, uvlinesize /*dct_offset*/;
+ int i;
+
+ if(!s->decode)
+ return;
+
+ if(s->mb_skiped){
+ }
+
+ dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
+ dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
+ dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
+
+ if (h->mb_field_decoding_flag) {
+ linesize = s->linesize * 2;
+ uvlinesize = s->uvlinesize * 2;
+ if(mb_y&1){ //FIXME move out of this func?
+ dest_y -= s->linesize*15;
+ dest_cb-= s->linesize*7;
+ dest_cr-= s->linesize*7;
+ }
+ } else {
+ linesize = s->linesize;
+ uvlinesize = s->uvlinesize;
+// dct_offset = s->linesize * 16;
+ }
+
+ if(IS_INTRA(mb_type)){
+ if(!(s->flags&CODEC_FLAG_GRAY)){
+ h->pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
+ h->pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
+ }
+
+ if(IS_INTRA4x4(mb_type)){
+ if(!s->encoding){
+ for(i=0; i<16; i++){
+ uint8_t * const ptr= dest_y + h->block_offset[i];
+ uint8_t *topright= ptr + 4 - linesize;
+ const int topright_avail= (h->topright_samples_available<<i)&0x8000;
+ const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
+ int tr;
+
+ if(!topright_avail){
+ tr= ptr[3 - linesize]*0x01010101;
+ topright= (uint8_t*) &tr;
+ }
+
+ h->pred4x4[ dir ](ptr, topright, linesize);
+ if(h->non_zero_count_cache[ scan8[i] ])
+ h264_add_idct_c(ptr, h->mb + i*16, linesize);
+ }
+ }
+ }else{
+ h->pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
+ h264_luma_dc_dequant_idct_c(h->mb, s->qscale);
+ }
+ }else{
+ hl_motion(h, dest_y, dest_cb, dest_cr,
+ s->dsp.put_h264_qpel_pixels_tab, s->dsp.put_h264_chroma_pixels_tab,
+ s->dsp.avg_h264_qpel_pixels_tab, s->dsp.avg_h264_chroma_pixels_tab);
+ }
+
+
+ if(!IS_INTRA4x4(mb_type)){
+ for(i=0; i<16; i++){
+ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
+ uint8_t * const ptr= dest_y + h->block_offset[i];
+ h264_add_idct_c(ptr, h->mb + i*16, linesize);
+ }
+ }
+ }
+
+ if(!(s->flags&CODEC_FLAG_GRAY)){
+ chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp);
+ chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp);
+ for(i=16; i<16+4; i++){
+ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
+ uint8_t * const ptr= dest_cb + h->block_offset[i];
+ h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
+ }
+ }
+ for(i=20; i<20+4; i++){
+ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
+ uint8_t * const ptr= dest_cr + h->block_offset[i];
+ h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
+ }
+ }
+ }
+}
+
+static void decode_mb_cabac(H264Context *h){
+// MpegEncContext * const s = &h->s;
+}
+
+/**
+ * fills the default_ref_list.
+ */
+static int fill_default_ref_list(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int i;
+ Picture sorted_short_ref[16];
+
+ if(h->slice_type==B_TYPE){
+ int out_i;
+ int limit= -1;
+
+ for(out_i=0; out_i<h->short_ref_count; out_i++){
+ int best_i=-1;
+ int best_poc=-1;
+
+ for(i=0; i<h->short_ref_count; i++){
+ const int poc= h->short_ref[i]->poc;
+ if(poc > limit && poc < best_poc){
+ best_poc= poc;
+ best_i= i;
+ }
+ }
+
+ assert(best_i != -1);
+
+ limit= best_poc;
+ sorted_short_ref[out_i]= *h->short_ref[best_i];
+ }
+ }
+
+ if(s->picture_structure == PICT_FRAME){
+ if(h->slice_type==B_TYPE){
+ const int current_poc= s->current_picture_ptr->poc;
+ int list;
+
+ for(list=0; list<2; list++){
+ int index=0;
+
+ for(i=0; i<h->short_ref_count && index < h->ref_count[list]; i++){
+ const int i2= list ? h->short_ref_count - i - 1 : i;
+ const int poc= sorted_short_ref[i2].poc;
+
+ if(sorted_short_ref[i2].reference != 3) continue; //FIXME refernce field shit
+
+ if((list==1 && poc > current_poc) || (list==0 && poc < current_poc)){
+ h->default_ref_list[list][index ]= sorted_short_ref[i2];
+ h->default_ref_list[list][index++].pic_id= sorted_short_ref[i2].frame_num;
+ }
+ }
+
+ for(i=0; i<h->long_ref_count && index < h->ref_count[ list ]; i++){
+ if(h->long_ref[i]->reference != 3) continue;
+
+ h->default_ref_list[ list ][index ]= *h->long_ref[i];
+ h->default_ref_list[ list ][index++].pic_id= i;;
+ }
+
+ if(h->long_ref_count > 1 && h->short_ref_count==0){
+ Picture temp= h->default_ref_list[1][0];
+ h->default_ref_list[1][0] = h->default_ref_list[1][1];
+ h->default_ref_list[1][0] = temp;
+ }
+
+ if(index < h->ref_count[ list ])
+ memset(&h->default_ref_list[list][index], 0, sizeof(Picture)*(h->ref_count[ list ] - index));
+ }
+ }else{
+ int index=0;
+ for(i=0; i<h->short_ref_count && index < h->ref_count[0]; i++){
+ if(h->short_ref[i]->reference != 3) continue; //FIXME refernce field shit
+ h->default_ref_list[0][index ]= *h->short_ref[i];
+ h->default_ref_list[0][index++].pic_id= h->short_ref[i]->frame_num;
+ }
+ for(i=0; i<h->long_ref_count && index < h->ref_count[0]; i++){
+ if(h->long_ref[i]->reference != 3) continue;
+ h->default_ref_list[0][index ]= *h->long_ref[i];
+ h->default_ref_list[0][index++].pic_id= i;;
+ }
+ if(index < h->ref_count[0])
+ memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index));
+ }
+ }else{ //FIELD
+ if(h->slice_type==B_TYPE){
+ }else{
+ //FIXME second field balh
+ }
+ }
+ return 0;
+}
+
+static int decode_ref_pic_list_reordering(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int list;
+
+ if(h->slice_type==I_TYPE || h->slice_type==SI_TYPE) return 0; //FIXME move beofre func
+
+ for(list=0; list<2; list++){
+ memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
+
+ if(get_bits1(&s->gb)){
+ int pred= h->curr_pic_num;
+ int index;
+
+ for(index=0; ; index++){
+ int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
+ int pic_id;
+ int i;
+
+
+ if(index >= h->ref_count[list]){
+ fprintf(stderr, "reference count overflow\n");
+ return -1;
+ }
+
+ if(reordering_of_pic_nums_idc<3){
+ if(reordering_of_pic_nums_idc<2){
+ const int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
+
+ if(abs_diff_pic_num >= h->max_pic_num){
+ fprintf(stderr, "abs_diff_pic_num overflow\n");
+ return -1;
+ }
+
+ if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
+ else pred+= abs_diff_pic_num;
+ pred &= h->max_pic_num - 1;
+
+ for(i= h->ref_count[list]-1; i>=index; i--){
+ if(h->ref_list[list][i].pic_id == pred && h->ref_list[list][i].long_ref==0)
+ break;
+ }
+ }else{
+ pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
+
+ for(i= h->ref_count[list]-1; i>=index; i--){
+ if(h->ref_list[list][i].pic_id == pic_id && h->ref_list[list][i].long_ref==1)
+ break;
+ }
+ }
+
+ if(i < index){
+ fprintf(stderr, "reference picture missing during reorder\n");
+ memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
+ }else if(i > index){
+ Picture tmp= h->ref_list[list][i];
+ for(; i>index; i--){
+ h->ref_list[list][i]= h->ref_list[list][i-1];
+ }
+ h->ref_list[list][index]= tmp;
+ }
+ }else if(reordering_of_pic_nums_idc==3)
+ break;
+ else{
+ fprintf(stderr, "illegal reordering_of_pic_nums_idc\n");
+ return -1;
+ }
+ }
+ }
+
+ if(h->slice_type!=B_TYPE) break;
+ }
+ return 0;
+}
+
+static int pred_weight_table(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int list, i;
+
+ h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
+ h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
+
+ for(list=0; list<2; list++){
+ for(i=0; i<h->ref_count[list]; i++){
+ int luma_weight_flag, chroma_weight_flag;
+
+ luma_weight_flag= get_bits1(&s->gb);
+ if(luma_weight_flag){
+ h->luma_weight[list][i]= get_se_golomb(&s->gb);
+ h->luma_offset[list][i]= get_se_golomb(&s->gb);
+ }
+
+ chroma_weight_flag= get_bits1(&s->gb);
+ if(chroma_weight_flag){
+ int j;
+ for(j=0; j<2; j++){
+ h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
+ h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
+ }
+ }
+ }
+ if(h->slice_type != B_TYPE) break;
+ }
+ return 0;
+}
+
+/**
+ * instantaneos decoder refresh.
+ */
+static void idr(H264Context *h){
+ int i;
+
+ for(i=0; i<h->long_ref_count; i++){
+ h->long_ref[i]->reference=0;
+ h->long_ref[i]= NULL;
+ }
+ h->long_ref_count=0;
+
+ for(i=0; i<h->short_ref_count; i++){
+ h->short_ref[i]->reference=0;
+ h->short_ref[i]= NULL;
+ }
+ h->short_ref_count=0;
+}
+
+//static void
+/**
+ *
+ * @return the removed picture or NULL if an error occures
+ */
+static Picture * remove_short(H264Context *h, int frame_num){
+ int i;
+
+ for(i=0; i<h->short_ref_count; i++){
+ Picture *pic= h->short_ref[i];
+ if(pic->frame_num == frame_num){
+ h->short_ref[i]= NULL;
+ memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i - 1)*sizeof(Picture*));
+ h->short_ref_count--;
+ return pic;
+ }
+ }
+ return NULL;
+}
+
+/**
+ *
+ * @return the removed picture or NULL if an error occures
+ */
+static Picture * remove_long(H264Context *h, int i){
+ Picture *pic;
+
+ if(i >= h->long_ref_count) return NULL;
+ pic= h->long_ref[i];
+ if(pic==NULL) return NULL;
+
+ h->long_ref[i]= NULL;
+ memmove(&h->long_ref[i], &h->long_ref[i+1], (h->long_ref_count - i - 1)*sizeof(Picture*));
+ h->long_ref_count--;
+
+ return pic;
+}
+
+/**
+ * Executes the reference picture marking (memory management control operations).
+ */
+static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
+ MpegEncContext * const s = &h->s;
+ int i;
+ int current_is_long=0;
+ Picture *pic;
+
+ if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
+ printf("no mmco here\n");
+
+ for(i=0; i<mmco_count; i++){
+ if(s->avctx->debug&FF_DEBUG_MMCO)
+ printf("mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_frame_num, h->mmco[i].long_index);
+
+ switch(mmco[i].opcode){
+ case MMCO_SHORT2UNUSED:
+ pic= remove_short(h, mmco[i].short_frame_num);
+ if(pic==NULL) return -1;
+ pic->reference= 0;
+ break;
+ case MMCO_SHORT2LONG:
+ pic= remove_long(h, mmco[i].long_index);
+ if(pic) pic->reference=0;
+
+ h->long_ref[ mmco[i].long_index ]= remove_short(h, mmco[i].short_frame_num);
+ h->long_ref[ mmco[i].long_index ]->long_ref=1;
+ break;
+ case MMCO_LONG2UNUSED:
+ pic= remove_long(h, mmco[i].long_index);
+ if(pic==NULL) return -1;
+ pic->reference= 0;
+ break;
+ case MMCO_LONG:
+ pic= remove_long(h, mmco[i].long_index);
+ if(pic) pic->reference=0;
+
+ h->long_ref[ mmco[i].long_index ]= s->current_picture_ptr;
+ h->long_ref[ mmco[i].long_index ]->long_ref=1;
+ h->long_ref_count++;
+
+ current_is_long=1;
+ break;
+ case MMCO_SET_MAX_LONG:
+ assert(mmco[i].long_index <= 16);
+ while(mmco[i].long_index < h->long_ref_count){
+ pic= remove_long(h, mmco[i].long_index);
+ pic->reference=0;
+ }
+ while(mmco[i].long_index > h->long_ref_count){
+ h->long_ref[ h->long_ref_count++ ]= NULL;
+ }
+ break;
+ case MMCO_RESET:
+ while(h->short_ref_count){
+ pic= remove_short(h, h->short_ref[0]->frame_num);
+ pic->reference=0;
+ }
+ while(h->long_ref_count){
+ pic= remove_long(h, h->long_ref_count-1);
+ pic->reference=0;
+ }
+ break;
+ default: assert(0);
+ }
+ }
+
+ if(!current_is_long){
+ pic= remove_short(h, s->current_picture_ptr->frame_num);
+ if(pic){
+ pic->reference=0;
+ fprintf(stderr, "illegal short term buffer state detected\n");
+ }
+
+ if(h->short_ref_count)
+ memmove(&h->short_ref[1], &h->short_ref[0], (h->short_ref_count - 1)*sizeof(Picture*));
+ h->short_ref[0]= s->current_picture_ptr;
+ h->short_ref[0]->long_ref=0;
+ h->short_ref_count++;
+ }
+
+ return 0;
+}
+
+static int decode_ref_pic_marking(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int i;
+
+ if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
+ s->broken_link= get_bits1(&s->gb) -1;
+ h->mmco[0].long_index= get_bits1(&s->gb) - 1; // current_long_term_idx
+ if(h->mmco[0].long_index == -1)
+ h->mmco_index= 0;
+ else{
+ h->mmco[0].opcode= MMCO_LONG;
+ h->mmco_index= 1;
+ }
+ }else{
+ if(get_bits1(&s->gb)){ // adaptive_ref_pic_marking_mode_flag
+ for(i= h->mmco_index; i<MAX_MMCO_COUNT; i++) {
+ MMCOOpcode opcode= get_ue_golomb(&s->gb);;
+
+ h->mmco[i].opcode= opcode;
+ if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
+ h->mmco[i].short_frame_num= (h->frame_num - get_ue_golomb(&s->gb) - 1) & ((1<<h->sps.log2_max_frame_num)-1); //FIXME fields
+/* if(h->mmco[i].short_frame_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_frame_num ] == NULL){
+ fprintf(stderr, "illegal short ref in memory management control operation %d\n", mmco);
+ return -1;
+ }*/
+ }
+ if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
+ h->mmco[i].long_index= get_ue_golomb(&s->gb);
+ if(/*h->mmco[i].long_index >= h->long_ref_count || h->long_ref[ h->mmco[i].long_index ] == NULL*/ h->mmco[i].long_index >= 16){
+ fprintf(stderr, "illegal long ref in memory management control operation %d\n", opcode);
+ return -1;
+ }
+ }
+
+ if(opcode > MMCO_LONG){
+ fprintf(stderr, "illegal memory management control operation %d\n", opcode);
+ return -1;
+ }
+ }
+ h->mmco_index= i;
+ }else{
+ assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
+
+ if(h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count){ //FIXME fields
+ h->mmco[0].opcode= MMCO_SHORT2UNUSED;
+ h->mmco[0].short_frame_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
+ h->mmco_index= 1;
+ }else
+ h->mmco_index= 0;
+ }
+ }
+
+ return 0;
+}
+
+static int init_poc(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int max_frame_num= 1<<h->sps.log2_max_frame_num;
+ int field_poc[2];
+
+ if(h->nal_unit_type == NAL_IDR_SLICE){
+ h->frame_num_offset= 0;
+ }else{
+ if(h->frame_num < h->prev_frame_num)
+ h->frame_num_offset= h->prev_frame_num_offset + max_frame_num;
+ else
+ h->frame_num_offset= h->prev_frame_num_offset;
+ }
+
+ if(h->sps.poc_type==0){
+ const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
+
+ if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
+ h->poc_msb = h->prev_poc_msb + max_poc_lsb;
+ else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
+ h->poc_msb = h->prev_poc_msb - max_poc_lsb;
+ else
+ h->poc_msb = h->prev_poc_msb;
+//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
+ field_poc[0] =
+ field_poc[1] = h->poc_msb + h->poc_lsb;
+ if(s->picture_structure == PICT_FRAME)
+ field_poc[1] += h->delta_poc_bottom;
+ }else if(h->sps.poc_type==1){
+ int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
+ int i;
+
+ if(h->sps.poc_cycle_length != 0)
+ abs_frame_num = h->frame_num_offset + h->frame_num;
+ else
+ abs_frame_num = 0;
+
+ if(h->nal_ref_idc==0 && abs_frame_num > 0)
+ abs_frame_num--;
+
+ expected_delta_per_poc_cycle = 0;
+ for(i=0; i < h->sps.poc_cycle_length; i++)
+ expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
+
+ if(abs_frame_num > 0){
+ int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
+ int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
+
+ expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
+ for(i = 0; i <= frame_num_in_poc_cycle; i++)
+ expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
+ } else
+ expectedpoc = 0;
+
+ if(h->nal_ref_idc == 0)
+ expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
+
+ field_poc[0] = expectedpoc + h->delta_poc[0];
+ field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
+
+ if(s->picture_structure == PICT_FRAME)
+ field_poc[1] += h->delta_poc[1];
+ }else{
+ int poc;
+ if(h->nal_unit_type == NAL_IDR_SLICE){
+ poc= 0;
+ }else{
+ if(h->nal_ref_idc) poc= 2*(h->frame_num_offset + h->frame_num);
+ else poc= 2*(h->frame_num_offset + h->frame_num) - 1;
+ }
+ field_poc[0]= poc;
+ field_poc[1]= poc;
+ }
+
+ if(s->picture_structure != PICT_BOTTOM_FIELD)
+ s->current_picture_ptr->field_poc[0]= field_poc[0];
+ if(s->picture_structure != PICT_TOP_FIELD)
+ s->current_picture_ptr->field_poc[1]= field_poc[1];
+ if(s->picture_structure == PICT_FRAME) // FIXME field pix?
+ s->current_picture_ptr->poc= FFMIN(field_poc[0], field_poc[1]);
+
+ return 0;
+}
+
+/**
+ * decodes a slice header.
+ * this will allso call MPV_common_init() and frame_start() as needed
+ */
+static int decode_slice_header(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int first_mb_in_slice, pps_id;
+ int num_ref_idx_active_override_flag;
+ static const uint8_t slice_type_map[5]= {P_TYPE, B_TYPE, I_TYPE, SP_TYPE, SI_TYPE};
+ float new_aspect;
+
+ s->current_picture.reference= h->nal_ref_idc != 0;
+
+ first_mb_in_slice= get_ue_golomb(&s->gb);
+
+ h->slice_type= get_ue_golomb(&s->gb);
+ if(h->slice_type > 9){
+ fprintf(stderr, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
+ }
+ if(h->slice_type > 4){
+ h->slice_type -= 5;
+ h->slice_type_fixed=1;
+ }else
+ h->slice_type_fixed=0;
+
+ h->slice_type= slice_type_map[ h->slice_type ];
+
+ s->pict_type= h->slice_type; // to make a few old func happy, its wrong though
+
+ pps_id= get_ue_golomb(&s->gb);
+ if(pps_id>255){
+ fprintf(stderr, "pps_id out of range\n");
+ return -1;
+ }
+ h->pps= h->pps_buffer[pps_id];
+ h->sps= h->sps_buffer[ h->pps.sps_id ];
+
+ s->mb_width= h->sps.mb_width;
+ s->mb_height= h->sps.mb_height;
+ h->mb_stride= s->mb_width + 1;
+
+ h->b_stride= s->mb_width*4;
+ h->b8_stride= s->mb_width*2;
+
+ s->mb_x = first_mb_in_slice % s->mb_width;
+ s->mb_y = first_mb_in_slice / s->mb_width; //FIXME AFFW
+
+ s->width = 16*s->mb_width - 2*(h->pps.crop_left + h->pps.crop_right );
+ if(h->sps.frame_mbs_only_flag)
+ s->height= 16*s->mb_height - 2*(h->pps.crop_top + h->pps.crop_bottom);
+ else
+ s->height= 16*s->mb_height - 4*(h->pps.crop_top + h->pps.crop_bottom); //FIXME recheck
+
+ if(h->pps.crop_left || h->pps.crop_top){
+ fprintf(stderr, "insane croping not completly supported, this could look slightly wrong ...\n");
+ }
+
+ if(s->aspected_height) //FIXME emms at end of slice ?
+ new_aspect= h->sps.sar_width*s->width / (float)(s->height*h->sps.sar_height);
+ else
+ new_aspect=0;
+
+ if (s->context_initialized
+ && ( s->width != s->avctx->width || s->height != s->avctx->height
+ || ABS(new_aspect - s->avctx->aspect_ratio) > 0.001)) {
+ free_tables(h);
+ MPV_common_end(s);
+ }
+ if (!s->context_initialized) {
+ if (MPV_common_init(s) < 0)
+ return -1;
+
+ alloc_tables(h);
+
+ s->avctx->width = s->width;
+ s->avctx->height = s->height;
+ s->avctx->aspect_ratio= new_aspect;
+ }
+
+ if(first_mb_in_slice == 0){
+ frame_start(h);
+ }
+
+ h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
+
+ if(h->sps.frame_mbs_only_flag){
+ s->picture_structure= PICT_FRAME;
+ }else{
+ if(get_bits1(&s->gb)) //field_pic_flag
+ s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
+ else
+ s->picture_structure= PICT_FRAME;
+ }
+
+ if(s->picture_structure==PICT_FRAME){
+ h->curr_pic_num= h->frame_num;
+ h->max_pic_num= 1<< h->sps.log2_max_frame_num;
+ }else{
+ h->curr_pic_num= 2*h->frame_num;
+ h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
+ }
+
+ if(h->nal_unit_type == NAL_IDR_SLICE){
+ int idr_pic_id= get_ue_golomb(&s->gb);
+ }
+
+ if(h->sps.poc_type==0){
+ h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
+
+ if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
+ h->delta_poc_bottom= get_se_golomb(&s->gb);
+ }
+ }
+
+ if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
+ h->delta_poc[0]= get_se_golomb(&s->gb);
+
+ if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
+ h->delta_poc[1]= get_se_golomb(&s->gb);
+ }
+
+ init_poc(h);
+
+ if(h->pps.redundant_pic_cnt_present){
+ h->redundant_pic_count= get_ue_golomb(&s->gb);
+ }
+
+ //set defaults, might be overriden a few line later
+ h->ref_count[0]= h->pps.ref_count[0];
+ h->ref_count[1]= h->pps.ref_count[1];
+
+ if(h->slice_type == P_TYPE || h->slice_type == SP_TYPE || h->slice_type == B_TYPE){
+ if(h->slice_type == B_TYPE){
+ h->direct_spatial_mv_pred= get_bits1(&s->gb);
+ }
+ num_ref_idx_active_override_flag= get_bits1(&s->gb);
+
+ if(num_ref_idx_active_override_flag){
+ h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
+ if(h->slice_type==B_TYPE)
+ h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
+
+ if(h->ref_count[0] > 32 || h->ref_count[1] > 32){
+ fprintf(stderr, "reference overflow\n");
+ return -1;
+ }
+ }
+ }
+
+ if(first_mb_in_slice == 0){
+ fill_default_ref_list(h);
+ }
+
+ decode_ref_pic_list_reordering(h);
+
+ if( (h->pps.weighted_pred && (h->slice_type == P_TYPE || h->slice_type == SP_TYPE ))
+ || (h->pps.weighted_bipred_idc==1 && h->slice_type==B_TYPE ) )
+ pred_weight_table(h);
+
+ if(s->current_picture.reference)
+ decode_ref_pic_marking(h);
+ //FIXME CABAC stuff
+
+ s->qscale = h->pps.init_qp + get_se_golomb(&s->gb); //slice_qp_delta
+ //FIXME qscale / qp ... stuff
+ if(h->slice_type == SP_TYPE){
+ int sp_for_switch_flag= get_bits1(&s->gb);
+ }
+ if(h->slice_type==SP_TYPE || h->slice_type == SI_TYPE){
+ int slice_qs_delta= get_se_golomb(&s->gb);
+ }
+
+ if( h->pps.deblocking_filter_parameters_present ) {
+ h->disable_deblocking_filter_idc= get_ue_golomb(&s->gb);
+ if( h->disable_deblocking_filter_idc != 1 ) {
+ h->slice_alpha_c0_offset_div2= get_se_golomb(&s->gb);
+ h->slice_beta_offset_div2= get_se_golomb(&s->gb);
+ }
+ }else
+ h->disable_deblocking_filter_idc= 0;
+
+#if 0 //FMO
+ if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
+ slice_group_change_cycle= get_bits(&s->gb, ?);
+#endif
+
+ if(s->avctx->debug&FF_DEBUG_PICT_INFO){
+ printf("mb:%d %c pps:%d frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d\n",
+ first_mb_in_slice,
+ ff_get_pict_type_char(h->slice_type),
+ pps_id, h->frame_num,
+ s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
+ h->ref_count[0], h->ref_count[1],
+ s->qscale,
+ h->disable_deblocking_filter_idc
+ );
+ }
+
+ return 0;
+}
+
+/**
+ *
+ */
+static inline int get_level_prefix(GetBitContext *gb){
+ unsigned int buf;
+ int log;
+
+ OPEN_READER(re, gb);
+ UPDATE_CACHE(re, gb);
+ buf=GET_CACHE(re, gb);
+
+ log= 32 - av_log2(buf);
+#ifdef TRACE
+ print_bin(buf>>(32-log), log);
+ printf("%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
+#endif
+
+ LAST_SKIP_BITS(re, gb, log);
+ CLOSE_READER(re, gb);
+
+ return log-1;
+}
+
+/**
+ * decodes a residual block.
+ * @param n block index
+ * @param scantable scantable
+ * @param max_coeff number of coefficients in the block
+ * @return <0 if an error occured
+ */
+static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, int qp, int max_coeff){
+ MpegEncContext * const s = &h->s;
+ const uint16_t *qmul= dequant_coeff[qp];
+ static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
+ int level[16], run[16];
+ int suffix_length, zeros_left, coeff_num, coeff_token, total_coeff, i, trailing_ones;
+
+ //FIXME put trailing_onex into the context
+
+ if(n == CHROMA_DC_BLOCK_INDEX){
+ coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
+ total_coeff= coeff_token>>2;
+ }else{
+ if(n == LUMA_DC_BLOCK_INDEX){
+ total_coeff= pred_non_zero_count(h, 0);
+ coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
+ total_coeff= coeff_token>>2;
+ }else{
+ total_coeff= pred_non_zero_count(h, n);
+ coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
+ total_coeff= coeff_token>>2;
+ h->non_zero_count_cache[ scan8[n] ]= total_coeff;
+ }
+ }
+
+ //FIXME set last_non_zero?
+
+ if(total_coeff==0)
+ return 0;
+
+ trailing_ones= coeff_token&3;
+#ifdef TRACE
+ printf("trailing:%d, total:%d\n", trailing_ones, total_coeff);
+#endif
+ assert(total_coeff<=16);
+
+ for(i=0; i<trailing_ones; i++){
+ level[i]= 1 - 2*get_bits1(gb);
+ }
+
+ suffix_length= total_coeff > 10 && trailing_ones < 3;
+
+ for(; i<total_coeff; i++){
+ const int prefix= get_level_prefix(gb);
+ int level_code, mask;
+
+ if(prefix<14){ //FIXME try to build a large unified VLC table for all this
+ if(suffix_length)
+ level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
+ else
+ level_code= (prefix<<suffix_length); //part
+ }else if(prefix==14){
+ if(suffix_length)
+ level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
+ else
+ level_code= prefix + get_bits(gb, 4); //part
+ }else if(prefix==15){
+ level_code= (prefix<<suffix_length) + get_bits(gb, 12); //part
+ if(suffix_length==0) level_code+=15; //FIXME doesnt make (much)sense
+ }else{
+ fprintf(stderr, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+
+ if(i==trailing_ones && i<3) level_code+= 2; //FIXME split first iteration
+
+ mask= -(level_code&1);
+ level[i]= (((2+level_code)>>1) ^ mask) - mask;
+
+ if(suffix_length==0) suffix_length=1; //FIXME split first iteration
+
+#if 1
+ if(ABS(level[i]) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
+#else
+ if((2+level_code)>>1) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
+ ? == prefix > 2 or sth
+#endif
+#ifdef TRACE
+printf("level: %d suffix_length:%d\n", level[i], suffix_length);
+#endif
+ }
+
+ if(total_coeff == max_coeff)
+ zeros_left=0;
+ else{
+ if(n == CHROMA_DC_BLOCK_INDEX)
+ zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
+ else
+ zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
+ }
+
+ for(i=0; i<total_coeff-1; i++){
+ if(zeros_left <=0)
+ break;
+ else if(zeros_left < 7){
+ run[i]= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
+ }else{
+ run[i]= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
+ }
+ zeros_left -= run[i];
+ }
+
+ if(zeros_left<0){
+ fprintf(stderr, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+
+ for(; i<total_coeff-1; i++){
+ run[i]= 0;
+ }
+
+ run[i]= zeros_left;
+
+ coeff_num=-1;
+ if(n > 24){
+ for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode?
+ int j;
+
+ coeff_num += run[i] + 1; //FIXME add 1 earlier ?
+ j= scantable[ coeff_num ];
+
+ block[j]= level[i];
+ }
+ }else{
+ for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode?
+ int j;
+
+ coeff_num += run[i] + 1; //FIXME add 1 earlier ?
+ j= scantable[ coeff_num ];
+
+ block[j]= level[i] * qmul[j];
+// printf("%d %d ", block[j], qmul[j]);
+ }
+ }
+ return 0;
+}
+
+/**
+ * decodes a macroblock
+ * @returns 0 if ok, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
+ */
+static int decode_mb(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= s->mb_x + s->mb_y*h->mb_stride;
+ int mb_type, /*ref0,*/ partition_count, cbp;
+
+ memset(h->mb, 0, sizeof(int16_t)*24*16); //FIXME avoid if allready clear (move after skip handlong?
+
+#ifdef TRACE
+ printf("pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
+#endif
+
+ if(h->slice_type != I_TYPE && h->slice_type != SI_TYPE){
+ if(s->mb_skip_run==-1)
+ s->mb_skip_run= get_ue_golomb(&s->gb);
+
+ if (s->mb_skip_run--) {
+ int i, mx, my;
+ /* skip mb */
+#if 0 //FIXME
+ for(i=0;i<6;i++)
+ s->block_last_index[i] = -1;
+ s->mv_type = MV_TYPE_16X16;
+ /* if P type, zero motion vector is implied */
+ s->mv_dir = MV_DIR_FORWARD;
+ s->mb_skiped = 1;
+#endif
+//FIXME b frame
+ mb_type= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0;
+
+ memset(h->non_zero_count[mb_xy], 0, 16);
+ memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
+
+ if(h->sps.mb_aff && s->mb_skip_run==0 && (s->mb_y&1)==0){
+ h->mb_field_decoding_flag= get_bits1(&s->gb);
+ }
+
+ if(h->mb_field_decoding_flag)
+ mb_type|= MB_TYPE_INTERLACED;
+
+ fill_caches(h, mb_type); //FIXME check what is needed and what not ...
+ pred_pskip_motion(h, &mx, &my);
+ fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
+ fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, (mx&0xFFFF)+(my<<16), 4);
+ write_back_motion(h, mb_type);
+
+ s->current_picture.mb_type[mb_xy]= mb_type; //FIXME SKIP type
+ h->slice_table[ mb_xy ]= h->slice_num;
+
+ h->prev_mb_skiped= 1;
+ return 0;
+ }
+ }
+ if(h->sps.mb_aff /* && !field pic FIXME needed? */){
+ if((s->mb_y&1)==0)
+ h->mb_field_decoding_flag = get_bits1(&s->gb);
+ }else
+ h->mb_field_decoding_flag=0; //FIXME som ed note ?!
+
+ h->prev_mb_skiped= 0;
+
+ mb_type= get_ue_golomb(&s->gb);
+ if(h->slice_type == B_TYPE){
+ if(mb_type < 23){
+ partition_count= b_mb_type_info[mb_type].partition_count;
+ mb_type= b_mb_type_info[mb_type].type;
+ }else{
+ mb_type -= 23;
+ goto decode_intra_mb;
+ }
+ }else if(h->slice_type == P_TYPE /*|| h->slice_type == SP_TYPE */){
+ if(mb_type < 5){
+ partition_count= p_mb_type_info[mb_type].partition_count;
+ mb_type= p_mb_type_info[mb_type].type;
+ }else{
+ mb_type -= 5;
+ goto decode_intra_mb;
+ }
+ }else{
+ assert(h->slice_type == I_TYPE);
+decode_intra_mb:
+ if(mb_type > 25){
+ fprintf(stderr, "mb_type %d in %c slice to large at %d %d\n", mb_type, ff_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
+ return -1;
+ }
+ partition_count=0;
+ cbp= i_mb_type_info[mb_type].cbp;
+ h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
+ mb_type= i_mb_type_info[mb_type].type;
+ }
+
+ if(h->mb_field_decoding_flag)
+ mb_type |= MB_TYPE_INTERLACED;
+
+ s->current_picture.mb_type[mb_xy]= mb_type;
+ h->slice_table[ mb_xy ]= h->slice_num;
+
+ if(IS_INTRA_PCM(mb_type)){
+ const uint8_t *ptr;
+ int x, y, i;
+
+ // we assume these blocks are very rare so we dont optimize it
+ align_get_bits(&s->gb);
+
+ ptr= s->gb.buffer + get_bits_count(&s->gb);
+
+ for(y=0; y<16; y++){
+ const int index= 4*(y&3) + 64*(y>>2);
+ for(x=0; x<16; x++){
+ h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
+ }
+ }
+ for(y=0; y<8; y++){
+ const int index= 256 + 4*(y&3) + 32*(y>>2);
+ for(x=0; x<8; x++){
+ h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
+ }
+ }
+ for(y=0; y<8; y++){
+ const int index= 256 + 64 + 4*(y&3) + 32*(y>>2);
+ for(x=0; x<8; x++){
+ h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
+ }
+ }
+
+ skip_bits(&s->gb, 384); //FIXME check /fix the bitstream readers
+
+ memset(h->non_zero_count[mb_xy], 16, 16);
+
+ return 0;
+ }
+
+ fill_caches(h, mb_type);
+
+ //mb_pred
+ if(IS_INTRA(mb_type)){
+// init_top_left_availability(h);
+ if(IS_INTRA4x4(mb_type)){
+ int i;
+
+// fill_intra4x4_pred_table(h);
+ for(i=0; i<16; i++){
+ const int mode_coded= !get_bits1(&s->gb);
+ const int predicted_mode= pred_intra_mode(h, i);
+ int mode;
+
+ if(mode_coded){
+ const int rem_mode= get_bits(&s->gb, 3);
+ if(rem_mode<predicted_mode)
+ mode= rem_mode;
+ else
+ mode= rem_mode + 1;
+ }else{
+ mode= predicted_mode;
+ }
+
+ h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
+ }
+ write_back_intra_pred_mode(h);
+ if( check_intra4x4_pred_mode(h) < 0)
+ return -1;
+ }else{
+ h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode);
+ if(h->intra16x16_pred_mode < 0)
+ return -1;
+ }
+ h->chroma_pred_mode= get_ue_golomb(&s->gb);
+
+ h->chroma_pred_mode= check_intra_pred_mode(h, h->chroma_pred_mode);
+ if(h->chroma_pred_mode < 0)
+ return -1;
+ }else if(partition_count==4){
+ int i, j, sub_partition_count[4], list, ref[2][4];
+
+ if(h->slice_type == B_TYPE){
+ for(i=0; i<4; i++){
+ h->sub_mb_type[i]= get_ue_golomb(&s->gb);
+ if(h->sub_mb_type[i] >=13){
+ fprintf(stderr, "B sub_mb_type %d out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
+ return -1;
+ }
+ sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
+ h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
+ }
+ }else{
+ assert(h->slice_type == P_TYPE || h->slice_type == SP_TYPE); //FIXME SP correct ?
+ for(i=0; i<4; i++){
+ h->sub_mb_type[i]= get_ue_golomb(&s->gb);
+ if(h->sub_mb_type[i] >=4){
+ fprintf(stderr, "P sub_mb_type %d out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
+ return -1;
+ }
+ sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
+ h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
+ }
+ }
+
+ for(list=0; list<2; list++){
+ const int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
+ if(ref_count == 0) continue;
+ for(i=0; i<4; i++){
+ if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
+ ref[list][i] = get_te0_golomb(&s->gb, ref_count); //FIXME init to 0 before and skip?
+ }else{
+ //FIXME
+ ref[list][i] = -1;
+ }
+ }
+ }
+
+ for(list=0; list<2; list++){
+ const int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
+ if(ref_count == 0) continue;
+
+ for(i=0; i<4; i++){
+ h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]=
+ h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
+
+ if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
+ const int sub_mb_type= h->sub_mb_type[i];
+ const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
+ for(j=0; j<sub_partition_count[i]; j++){
+ int mx, my;
+ const int index= 4*i + block_width*j;
+ int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
+ pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
+ mx += get_se_golomb(&s->gb);
+ my += get_se_golomb(&s->gb);
+#ifdef TRACE
+printf("final mv:%d %d\n", mx, my);
+#endif
+ if(IS_SUB_8X8(sub_mb_type)){
+ mv_cache[ 0 ][0]= mv_cache[ 1 ][0]=
+ mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
+ mv_cache[ 0 ][1]= mv_cache[ 1 ][1]=
+ mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
+ }else if(IS_SUB_8X4(sub_mb_type)){
+ mv_cache[ 0 ][0]= mv_cache[ 1 ][0]= mx;
+ mv_cache[ 0 ][1]= mv_cache[ 1 ][1]= my;
+ }else if(IS_SUB_4X8(sub_mb_type)){
+ mv_cache[ 0 ][0]= mv_cache[ 8 ][0]= mx;
+ mv_cache[ 0 ][1]= mv_cache[ 8 ][1]= my;
+ }else{
+ assert(IS_SUB_4X4(sub_mb_type));
+ mv_cache[ 0 ][0]= mx;
+ mv_cache[ 0 ][1]= my;
+ }
+ }
+ }else{
+ uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
+ p[0] = p[1]=
+ p[8] = p[9]= 0;
+ }
+ }
+ }
+ }else if(!IS_DIRECT(mb_type)){
+ int list, mx, my, i;
+ //FIXME we should set ref_idx_l? to 0 if we use that later ...
+ if(IS_16X16(mb_type)){
+ for(list=0; list<2; list++){
+ if(h->ref_count[0]>0){
+ if(IS_DIR(mb_type, 0, list)){
+ const int val= get_te0_golomb(&s->gb, h->ref_count[list]);
+ fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
+ }
+ }
+ }
+ for(list=0; list<2; list++){
+ if(IS_DIR(mb_type, 0, list)){
+ pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
+ mx += get_se_golomb(&s->gb);
+ my += get_se_golomb(&s->gb);
+#ifdef TRACE
+printf("final mv:%d %d\n", mx, my);
+#endif
+ fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, (mx&0xFFFF) + (my<<16), 4);
+ }
+ }
+ }
+ else if(IS_16X8(mb_type)){
+ for(list=0; list<2; list++){
+ if(h->ref_count[list]>0){
+ for(i=0; i<2; i++){
+ if(IS_DIR(mb_type, i, list)){
+ const int val= get_te0_golomb(&s->gb, h->ref_count[list]);
+ fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1);
+ }
+ }
+ }
+ }
+ for(list=0; list<2; list++){
+ for(i=0; i<2; i++){
+ if(IS_DIR(mb_type, i, list)){
+ pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
+ mx += get_se_golomb(&s->gb);
+ my += get_se_golomb(&s->gb);
+#ifdef TRACE
+printf("final mv:%d %d\n", mx, my);
+#endif
+ fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (mx&0xFFFF) + (my<<16), 4);
+ }
+ }
+ }
+ }else{
+ assert(IS_8X16(mb_type));
+ for(list=0; list<2; list++){
+ if(h->ref_count[list]>0){
+ for(i=0; i<2; i++){
+ if(IS_DIR(mb_type, i, list)){ //FIXME optimize
+ const int val= get_te0_golomb(&s->gb, h->ref_count[list]);
+ fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1);
+ }
+ }
+ }
+ }
+ for(list=0; list<2; list++){
+ for(i=0; i<2; i++){
+ if(IS_DIR(mb_type, i, list)){
+ pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
+ mx += get_se_golomb(&s->gb);
+ my += get_se_golomb(&s->gb);
+#ifdef TRACE
+printf("final mv:%d %d\n", mx, my);
+#endif
+ fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (mx&0xFFFF) + (my<<16), 4);
+ }
+ }
+ }
+ }
+ }
+
+ if(IS_INTER(mb_type))
+ write_back_motion(h, mb_type);
+
+ if(!IS_INTRA16x16(mb_type)){
+ cbp= get_ue_golomb(&s->gb);
+ if(cbp > 47){
+ fprintf(stderr, "cbp too large (%d) at %d %d\n", cbp, s->mb_x, s->mb_y);
+ return -1;
+ }
+
+ if(IS_INTRA4x4(mb_type))
+ cbp= golomb_to_intra4x4_cbp[cbp];
+ else
+ cbp= golomb_to_inter_cbp[cbp];
+ }
+
+ if(cbp || IS_INTRA16x16(mb_type)){
+ int i8x8, i4x4, chroma_idx;
+ int chroma_qp, dquant;
+ GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
+ const uint8_t *scan, *dc_scan;
+
+// fill_non_zero_count_cache(h);
+
+ if(IS_INTERLACED(mb_type)){
+ scan= field_scan;
+ dc_scan= luma_dc_field_scan;
+ }else{
+ scan= zigzag_scan;
+ dc_scan= luma_dc_zigzag_scan;
+ }
+
+ dquant= get_se_golomb(&s->gb);
+
+ if( dquant > 25 || dquant < -26 ){
+ fprintf(stderr, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
+ return -1;
+ }
+
+ s->qscale += dquant;
+ if(((unsigned)s->qscale) > 51){
+ if(s->qscale<0) s->qscale+= 52;
+ else s->qscale-= 52;
+ }
+
+ h->chroma_qp= chroma_qp= get_chroma_qp(h, s->qscale);
+ if(IS_INTRA16x16(mb_type)){
+ if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, s->qscale, 16) < 0){
+ return -1; //FIXME continue if partotioned and other retirn -1 too
+ }
+
+ assert((cbp&15) == 0 || (cbp&15) == 15);
+
+ if(cbp&15){
+ for(i8x8=0; i8x8<4; i8x8++){
+ for(i4x4=0; i4x4<4; i4x4++){
+ const int index= i4x4 + 4*i8x8;
+ if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, s->qscale, 15) < 0 ){
+ return -1;
+ }
+ }
+ }
+ }else{
+ memset(&h->non_zero_count_cache[8], 0, 8*4); //FIXME stupid & slow
+ }
+ }else{
+ for(i8x8=0; i8x8<4; i8x8++){
+ if(cbp & (1<<i8x8)){
+ for(i4x4=0; i4x4<4; i4x4++){
+ const int index= i4x4 + 4*i8x8;
+
+ if( decode_residual(h, gb, h->mb + 16*index, index, scan, s->qscale, 16) <0 ){
+ return -1;
+ }
+ }
+ }else{
+ uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
+ nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
+ }
+ }
+ }
+
+ if(cbp&0x30){
+ for(chroma_idx=0; chroma_idx<2; chroma_idx++)
+ if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, chroma_qp, 4) < 0){
+ return -1;
+ }
+ }
+
+ if(cbp&0x20){
+ for(chroma_idx=0; chroma_idx<2; chroma_idx++){
+ for(i4x4=0; i4x4<4; i4x4++){
+ const int index= 16 + 4*chroma_idx + i4x4;
+ if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, chroma_qp, 15) < 0){
+ return -1;
+ }
+ }
+ }
+ }else{
+ uint8_t * const nnz= &h->non_zero_count_cache[0];
+ nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
+ nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
+ }
+ }else{
+ memset(&h->non_zero_count_cache[8], 0, 8*5);
+ }
+ write_back_non_zero_count(h);
+
+ return 0;
+}
+
+static int decode_slice(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
+
+ s->mb_skip_run= -1;
+
+#if 1
+ for(;;){
+ int ret= decode_mb(h);
+
+ hl_decode_mb(h);
+
+ if(ret>=0 && h->sps.mb_aff){ //FIXME optimal? or let mb_decode decode 16x32 ?
+ s->mb_y++;
+ ret= decode_mb(h);
+
+ hl_decode_mb(h);
+ s->mb_y--;
+ }
+
+ if(ret<0){
+ fprintf(stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
+
+ return -1;
+ }
+
+ if(++s->mb_x >= s->mb_width){
+ s->mb_x=0;
+ ff_draw_horiz_band(s, 16*s->mb_y, 16);
+ if(++s->mb_y >= s->mb_height){
+#ifdef TRACE
+printf("slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
+#endif
+ if(get_bits_count(&s->gb) == s->gb.size_in_bits){
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
+
+ return 0;
+ }else{
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
+
+ return -1;
+ }
+ }
+ }
+
+ if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
+ if(get_bits_count(&s->gb) == s->gb.size_in_bits){
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
+
+ return 0;
+ }else{
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
+
+ return -1;
+ }
+ }
+ }
+#endif
+#if 0
+ for(;s->mb_y < s->mb_height; s->mb_y++){
+ for(;s->mb_x < s->mb_width; s->mb_x++){
+ int ret= decode_mb(h);
+
+ hl_decode_mb(h);
+
+ if(ret<0){
+ fprintf(stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
+
+ return -1;
+ }
+
+ if(++s->mb_x >= s->mb_width){
+ s->mb_x=0;
+ if(++s->mb_y >= s->mb_height){
+ if(get_bits_count(s->gb) == s->gb.size_in_bits){
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
+
+ return 0;
+ }else{
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
+
+ return -1;
+ }
+ }
+ }
+
+ if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
+ if(get_bits_count(s->gb) == s->gb.size_in_bits){
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
+
+ return 0;
+ }else{
+ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
+
+ return -1;
+ }
+ }
+ }
+ s->mb_x=0;
+ ff_draw_horiz_band(s, 16*s->mb_y, 16);
+ }
+#endif
+ return -1; //not reached
+}
+
+static inline int decode_vui_parameters(H264Context *h, SPS *sps){
+ MpegEncContext * const s = &h->s;
+ int aspect_ratio_info_present_flag, aspect_ratio_idc;
+
+ aspect_ratio_info_present_flag= get_bits1(&s->gb);
+
+ if( aspect_ratio_info_present_flag ) {
+ aspect_ratio_idc= get_bits(&s->gb, 8);
+ if( aspect_ratio_idc == EXTENDED_SAR ) {
+ sps->sar_width= get_bits(&s->gb, 16);
+ sps->sar_height= get_bits(&s->gb, 16);
+ }else if(aspect_ratio_idc < 16){
+ sps->sar_width= pixel_aspect[aspect_ratio_idc][0];
+ sps->sar_height= pixel_aspect[aspect_ratio_idc][1];
+ }else{
+ fprintf(stderr, "illegal aspect ratio\n");
+ return -1;
+ }
+ }else{
+ sps->sar_width=
+ sps->sar_height= 0;
+ }
+// s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
+#if 0
+| overscan_info_present_flag |0 |u(1) |
+| if( overscan_info_present_flag ) | | |
+| overscan_appropriate_flag |0 |u(1) |
+| video_signal_type_present_flag |0 |u(1) |
+| if( video_signal_type_present_flag ) { | | |
+| video_format |0 |u(3) |
+| video_full_range_flag |0 |u(1) |
+| colour_description_present_flag |0 |u(1) |
+| if( colour_description_present_flag ) { | | |
+| colour_primaries |0 |u(8) |
+| transfer_characteristics |0 |u(8) |
+| matrix_coefficients |0 |u(8) |
+| } | | |
+| } | | |
+| chroma_location_info_present_flag |0 |u(1) |
+| if ( chroma_location_info_present_flag ) { | | |
+| chroma_sample_location_type_top_field |0 |ue(v) |
+| chroma_sample_location_type_bottom_field |0 |ue(v) |
+| } | | |
+| timing_info_present_flag |0 |u(1) |
+| if( timing_info_present_flag ) { | | |
+| num_units_in_tick |0 |u(32) |
+| time_scale |0 |u(32) |
+| fixed_frame_rate_flag |0 |u(1) |
+| } | | |
+| nal_hrd_parameters_present_flag |0 |u(1) |
+| if( nal_hrd_parameters_present_flag = = 1) | | |
+| hrd_parameters( ) | | |
+| vcl_hrd_parameters_present_flag |0 |u(1) |
+| if( vcl_hrd_parameters_present_flag = = 1) | | |
+| hrd_parameters( ) | | |
+| if( ( nal_hrd_parameters_present_flag = = 1 | || | |
+| | | |
+|( vcl_hrd_parameters_present_flag = = 1 ) ) | | |
+| low_delay_hrd_flag |0 |u(1) |
+| bitstream_restriction_flag |0 |u(1) |
+| if( bitstream_restriction_flag ) { |0 |u(1) |
+| motion_vectors_over_pic_boundaries_flag |0 |u(1) |
+| max_bytes_per_pic_denom |0 |ue(v) |
+| max_bits_per_mb_denom |0 |ue(v) |
+| log2_max_mv_length_horizontal |0 |ue(v) |
+| log2_max_mv_length_vertical |0 |ue(v) |
+| num_reorder_frames |0 |ue(v) |
+| max_dec_frame_buffering |0 |ue(v) |
+| } | | |
+|} | | |
+#endif
+ return 0;
+}
+
+static inline int decode_seq_parameter_set(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int profile_idc, level_idc, multiple_slice_groups, arbitrary_slice_order, redundant_slices;
+ int sps_id, i;
+ SPS *sps;
+
+ profile_idc= get_bits(&s->gb, 8);
+ level_idc= get_bits(&s->gb, 8);
+ multiple_slice_groups= get_bits1(&s->gb);
+ arbitrary_slice_order= get_bits1(&s->gb);
+ redundant_slices= get_bits1(&s->gb);
+
+ sps_id= get_ue_golomb(&s->gb);
+
+ sps= &h->sps_buffer[ sps_id ];
+
+ sps->profile_idc= profile_idc;
+ sps->level_idc= level_idc;
+ sps->multiple_slice_groups= multiple_slice_groups;
+ sps->arbitrary_slice_order= arbitrary_slice_order;
+ sps->redundant_slices= redundant_slices;
+
+ sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
+
+ sps->poc_type= get_ue_golomb(&s->gb);
+
+ if(sps->poc_type == 0){ //FIXME #define
+ sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
+ } else if(sps->poc_type == 1){//FIXME #define
+ sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
+ sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);
+ sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb);
+ sps->poc_cycle_length= get_ue_golomb(&s->gb);
+
+ for(i=0; i<sps->poc_cycle_length; i++)
+ sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
+ }
+ if(sps->poc_type > 2){
+ fprintf(stderr, "illegal POC type %d\n", sps->poc_type);
+ return -1;
+ }
+
+ sps->ref_frame_count= get_ue_golomb(&s->gb);
+ sps->required_frame_num_update_behaviour_flag= get_bits1(&s->gb);
+ sps->mb_width= get_ue_golomb(&s->gb) + 1;
+ sps->mb_height= get_ue_golomb(&s->gb) + 1;
+ sps->frame_mbs_only_flag= get_bits1(&s->gb);
+ if(!sps->frame_mbs_only_flag)
+ sps->mb_aff= get_bits1(&s->gb);
+ else
+ sps->mb_aff= 0;
+
+ sps->direct_8x8_inference_flag= get_bits1(&s->gb);
+
+ sps->vui_parameters_present_flag= get_bits1(&s->gb);
+ if( sps->vui_parameters_present_flag )
+ decode_vui_parameters(h, sps);
+
+ if(s->avctx->debug&FF_DEBUG_PICT_INFO){
+ printf("sps:%d profile:%d/%d poc:%d ref:%d %dx%d %s %s %s\n",
+ sps_id, sps->profile_idc, sps->level_idc,
+ sps->poc_type,
+ sps->ref_frame_count,
+ sps->mb_width, sps->mb_height,
+ sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
+ sps->direct_8x8_inference_flag ? "8B8" : "",
+ sps->vui_parameters_present_flag ? "VUI" : ""
+ );
+ }
+ return 0;
+}
+
+static inline int decode_picture_parameter_set(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ int pps_id= get_ue_golomb(&s->gb);
+ PPS *pps= &h->pps_buffer[pps_id];
+
+ pps->sps_id= get_ue_golomb(&s->gb);
+ pps->cabac= get_bits1(&s->gb);
+ pps->pic_order_present= get_bits1(&s->gb);
+ pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
+ if(pps->slice_group_count > 1 ){
+ pps->mb_slice_group_map_type= get_ue_golomb(&s->gb);
+fprintf(stderr, "FMO not supported\n");
+ switch(pps->mb_slice_group_map_type){
+ case 0:
+#if 0
+| for( i = 0; i <= num_slice_groups_minus1; i++ ) | | |
+| run_length[ i ] |1 |ue(v) |
+#endif
+ break;
+ case 2:
+#if 0
+| for( i = 0; i < num_slice_groups_minus1; i++ ) | | |
+|{ | | |
+| top_left_mb[ i ] |1 |ue(v) |
+| bottom_right_mb[ i ] |1 |ue(v) |
+| } | | |
+#endif
+ break;
+ case 3:
+ case 4:
+ case 5:
+#if 0
+| slice_group_change_direction_flag |1 |u(1) |
+| slice_group_change_rate_minus1 |1 |ue(v) |
+#endif
+ break;
+ case 6:
+#if 0
+| slice_group_id_cnt_minus1 |1 |ue(v) |
+| for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | |
+|) | | |
+| slice_group_id[ i ] |1 |u(v) |
+#endif
+ }
+ }
+ pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
+ pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
+ if(pps->ref_count[0] > 32 || pps->ref_count[1] > 32){
+ fprintf(stderr, "reference overflow (pps)\n");
+ return -1;
+ }
+
+ pps->weighted_pred= get_bits1(&s->gb);
+ pps->weighted_bipred_idc= get_bits(&s->gb, 2);
+ pps->init_qp= get_se_golomb(&s->gb) + 26;
+ pps->init_qs= get_se_golomb(&s->gb) + 26;
+ pps->chroma_qp_index_offset= get_se_golomb(&s->gb);
+ pps->deblocking_filter_parameters_present= get_bits1(&s->gb);
+ pps->constrained_intra_pred= get_bits1(&s->gb);
+ pps->redundant_pic_cnt_present = get_bits1(&s->gb);
+ pps->crop= get_bits1(&s->gb);
+ if(pps->crop){
+ pps->crop_left = get_ue_golomb(&s->gb);
+ pps->crop_right = get_ue_golomb(&s->gb);
+ pps->crop_top = get_ue_golomb(&s->gb);
+ pps->crop_bottom= get_ue_golomb(&s->gb);
+ }else{
+ pps->crop_left =
+ pps->crop_right =
+ pps->crop_top =
+ pps->crop_bottom= 0;
+ }
+
+ if(s->avctx->debug&FF_DEBUG_PICT_INFO){
+ printf("pps:%d sps:%d %s slice_groups:%d ref:%d/%d %s qp:%d/%d/%d %s %s %s crop:%d/%d/%d/%d\n",
+ pps_id, pps->sps_id,
+ pps->cabac ? "CABAC" : "CAVLC",
+ pps->slice_group_count,
+ pps->ref_count[0], pps->ref_count[1],
+ pps->weighted_pred ? "weighted" : "",
+ pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset,
+ pps->deblocking_filter_parameters_present ? "LPAR" : "",
+ pps->constrained_intra_pred ? "CONSTR" : "",
+ pps->redundant_pic_cnt_present ? "REDU" : "",
+ pps->crop_left, pps->crop_right,
+ pps->crop_top, pps->crop_bottom
+ );
+ }
+
+ return 0;
+}
+
+/**
+ * finds the end of the current frame in the bitstream.
+ * @return the position of the first byte of the next frame, or -1
+ */
+static int find_frame_end(MpegEncContext *s, uint8_t *buf, int buf_size){
+ ParseContext *pc= &s->parse_context;
+ int last_addr, i;
+ uint32_t state;
+//printf("first %02X%02X%02X%02X\n", buf[0], buf[1],buf[2],buf[3]);
+// mb_addr= pc->mb_addr - 1;
+ state= pc->state;
+ //FIXME this will fail with slices
+ for(i=0; i<buf_size; i++){
+ state= (state<<8) | buf[i];
+ if((state&0xFFFFFF1F) == 0x101 || (state&0xFFFFFF1F) == 0x102 || (state&0xFFFFFF1F) == 0x105){
+ if(pc->frame_start_found){
+ pc->state=-1;
+ pc->frame_start_found= 0;
+ return i-3;
+ }
+ pc->frame_start_found= 1;
+ }
+ }
+
+ pc->state= state;
+ return -1;
+}
+
+static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
+ MpegEncContext * const s = &h->s;
+ AVCodecContext * const avctx= s->avctx;
+ int buf_index=0;
+ int i;
+#if 0
+ for(i=0; i<32; i++){
+ printf("%X ", buf[i]);
+ }
+#endif
+ for(;;){
+ int consumed;
+ int dst_length;
+ int bit_length;
+ uint8_t *ptr;
+
+ // start code prefix search
+ for(; buf_index + 3 < buf_size; buf_index++){
+ // this should allways succeed in the first iteration
+ if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
+ break;
+ }
+
+ if(buf_index+3 >= buf_size) break;
+
+ buf_index+=3;
+
+ ptr= decode_nal(h, buf + buf_index, &dst_length, &consumed, buf_size - buf_index);
+ if(ptr[dst_length - 1] == 0) dst_length--;
+ bit_length= 8*dst_length - decode_rbsp_trailing(ptr + dst_length - 1);
+
+ if(s->avctx->debug&FF_DEBUG_STARTCODE){
+ printf("NAL %d at %d length %d\n", h->nal_unit_type, buf_index, dst_length);
+ }
+
+ buf_index += consumed;
+
+ if(h->nal_ref_idc < s->hurry_up)
+ continue;
+
+ switch(h->nal_unit_type){
+ case NAL_IDR_SLICE:
+ idr(h); //FIXME ensure we dont loose some frames if there is reordering
+ case NAL_SLICE:
+ init_get_bits(&s->gb, ptr, bit_length);
+ h->intra_gb_ptr=
+ h->inter_gb_ptr= &s->gb;
+ s->data_partitioning = 0;
+
+ if(decode_slice_header(h) < 0) return -1;
+ if(h->redundant_pic_count==0)
+ decode_slice(h);
+ break;
+ case NAL_DPA:
+ init_get_bits(&s->gb, ptr, bit_length);
+ h->intra_gb_ptr=
+ h->inter_gb_ptr= NULL;
+ s->data_partitioning = 1;
+
+ if(decode_slice_header(h) < 0) return -1;
+ break;
+ case NAL_DPB:
+ init_get_bits(&h->intra_gb, ptr, bit_length);
+ h->intra_gb_ptr= &h->intra_gb;
+ break;
+ case NAL_DPC:
+ init_get_bits(&h->inter_gb, ptr, bit_length);
+ h->inter_gb_ptr= &h->inter_gb;
+
+ if(h->redundant_pic_count==0)
+ decode_slice(h);
+ break;
+ case NAL_SEI:
+ break;
+ case NAL_SPS:
+ init_get_bits(&s->gb, ptr, bit_length);
+ decode_seq_parameter_set(h);
+
+ if(s->flags& CODEC_FLAG_LOW_DELAY)
+ s->low_delay=1;
+
+ avctx->has_b_frames= !s->low_delay;
+ break;
+ case NAL_PPS:
+ init_get_bits(&s->gb, ptr, bit_length);
+
+ decode_picture_parameter_set(h);
+
+ break;
+ case NAL_PICTURE_DELIMITER:
+ break;
+ case NAL_FILTER_DATA:
+ break;
+ }
+
+ //FIXME move after where irt is set
+ s->current_picture.pict_type= s->pict_type;
+ s->current_picture.key_frame= s->pict_type == I_TYPE;
+ }
+
+ h->prev_frame_num_offset= h->frame_num_offset;
+ h->prev_frame_num= h->frame_num;
+ if(s->current_picture_ptr->reference){
+ h->prev_poc_msb= h->poc_msb;
+ h->prev_poc_lsb= h->poc_lsb;
+ }
+ if(s->current_picture_ptr->reference)
+ execute_ref_pic_marking(h, h->mmco, h->mmco_index);
+ else
+ assert(h->mmco_index=0);
+
+ ff_er_frame_end(s);
+ MPV_frame_end(s);
+
+ return buf_index;
+}
+
+/**
+ * retunrs the number of bytes consumed for building the current frame
+ */
+static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
+ if(s->flags&CODEC_FLAG_TRUNCATED){
+ pos -= s->parse_context.last_index;
+ if(pos<0) pos=0; // FIXME remove (uneeded?)
+
+ return pos;
+ }else{
+ if(pos==0) pos=1; //avoid infinite loops (i doubt thats needed but ...)
+ if(pos+10>buf_size) pos=buf_size; // oops ;)
+
+ return pos;
+ }
+}
+
+static int decode_frame(AVCodecContext *avctx,
+ void *data, int *data_size,
+ uint8_t *buf, int buf_size)
+{
+ H264Context *h = avctx->priv_data;
+ MpegEncContext *s = &h->s;
+ AVFrame *pict = data;
+ float new_aspect;
+ int buf_index;
+
+ s->flags= avctx->flags;
+
+ *data_size = 0;
+
+ /* no supplementary picture */
+ if (buf_size == 0) {
+ return 0;
+ }
+
+ if(s->flags&CODEC_FLAG_TRUNCATED){
+ int next= find_frame_end(s, buf, buf_size);
+
+ if( ff_combine_frame(s, next, &buf, &buf_size) < 0 )
+ return buf_size;
+//printf("next:%d buf_size:%d last_index:%d\n", next, buf_size, s->parse_context.last_index);
+ }
+
+ if(s->avctx->extradata_size && s->picture_number==0){
+ if(0 < decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) )
+ return -1;
+ }
+
+ buf_index=decode_nal_units(h, buf, buf_size);
+ if(buf_index < 0)
+ return -1;
+
+ //FIXME do something with unavailable reference frames
+
+// if(ret==FRAME_SKIPED) return get_consumed_bytes(s, buf_index, buf_size);
+#if 0
+ if(s->pict_type==B_TYPE || s->low_delay){
+ *pict= *(AVFrame*)&s->current_picture;
+ } else {
+ *pict= *(AVFrame*)&s->last_picture;
+ }
+#endif
+ *pict= *(AVFrame*)&s->current_picture; //FIXME
+ assert(pict->data[0]);
+//printf("out %d\n", (int)pict->data[0]);
+ if(avctx->debug&FF_DEBUG_QP){
+ int8_t *qtab= pict->qscale_table;
+ int x,y;
+
+ for(y=0; y<s->mb_height; y++){
+ for(x=0; x<s->mb_width; x++){
+ printf("%2d ", qtab[x + y*s->mb_width]);
+ }
+ printf("\n");
+ }
+ printf("\n");
+ }
+#if 0 //?
+
+ /* Return the Picture timestamp as the frame number */
+ /* we substract 1 because it is added on utils.c */
+ avctx->frame_number = s->picture_number - 1;
+#endif
+#if 0
+ /* dont output the last pic after seeking */
+ if(s->last_picture_ptr || s->low_delay)
+ //Note this isnt a issue as a IDR pic should flush teh buffers
+#endif
+ *data_size = sizeof(AVFrame);
+ return get_consumed_bytes(s, buf_index, buf_size);
+}
+#if 0
+static inline void fill_mb_avail(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= s->mb_x + s->mb_y*h->mb_stride;
+
+ if(s->mb_y){
+ h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - h->mb_stride - 1] == h->slice_num;
+ h->mb_avail[1]= h->slice_table[mb_xy - h->mb_stride ] == h->slice_num;
+ h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - h->mb_stride + 1] == h->slice_num;
+ }else{
+ h->mb_avail[0]=
+ h->mb_avail[1]=
+ h->mb_avail[2]= 0;
+ }
+ h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
+ h->mb_avail[4]= 1; //FIXME move out
+ h->mb_avail[5]= 0; //FIXME move out
+}
+#endif
+
+#if 0 //selftest
+#define COUNT 8000
+#define SIZE (COUNT*40)
+int main(){
+ int i;
+ uint8_t temp[SIZE];
+ PutBitContext pb;
+ GetBitContext gb;
+// int int_temp[10000];
+ DSPContext dsp;
+ AVCodecContext avctx;
+
+ dsputil_init(&dsp, &avctx);
+
+ init_put_bits(&pb, temp, SIZE, NULL, NULL);
+ printf("testing unsigned exp golomb\n");
+ for(i=0; i<COUNT; i++){
+ START_TIMER
+ set_ue_golomb(&pb, i);
+ STOP_TIMER("set_ue_golomb");
+ }
+ flush_put_bits(&pb);
+
+ init_get_bits(&gb, temp, 8*SIZE);
+ for(i=0; i<COUNT; i++){
+ int j, s;
+
+ s= show_bits(&gb, 24);
+
+ START_TIMER
+ j= get_ue_golomb(&gb);
+ if(j != i){
+ printf("missmatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
+// return -1;
+ }
+ STOP_TIMER("get_ue_golomb");
+ }
+
+
+ init_put_bits(&pb, temp, SIZE, NULL, NULL);
+ printf("testing signed exp golomb\n");
+ for(i=0; i<COUNT; i++){
+ START_TIMER
+ set_se_golomb(&pb, i - COUNT/2);
+ STOP_TIMER("set_se_golomb");
+ }
+ flush_put_bits(&pb);
+
+ init_get_bits(&gb, temp, 8*SIZE);
+ for(i=0; i<COUNT; i++){
+ int j, s;
+
+ s= show_bits(&gb, 24);
+
+ START_TIMER
+ j= get_se_golomb(&gb);
+ if(j != i - COUNT/2){
+ printf("missmatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
+// return -1;
+ }
+ STOP_TIMER("get_se_golomb");
+ }
+
+ printf("testing 4x4 (I)DCT\n");
+
+ DCTELEM block[16];
+ uint8_t src[16], ref[16];
+ uint64_t error= 0, max_error=0;
+
+ for(i=0; i<COUNT; i++){
+ int j;
+// printf("%d %d %d\n", r1, r2, (r2-r1)*16);
+ for(j=0; j<16; j++){
+ ref[j]= random()%255;
+ src[j]= random()%255;
+ }
+
+ h264_diff_dct_c(block, src, ref, 4);
+
+ //normalize
+ for(j=0; j<16; j++){
+// printf("%d ", block[j]);
+ block[j]= block[j]*4;
+ if(j&1) block[j]= (block[j]*4 + 2)/5;
+ if(j&4) block[j]= (block[j]*4 + 2)/5;
+ }
+// printf("\n");
+
+ h264_add_idct_c(ref, block, 4);
+/* for(j=0; j<16; j++){
+ printf("%d ", ref[j]);
+ }
+ printf("\n");*/
+
+ for(j=0; j<16; j++){
+ int diff= ABS(src[j] - ref[j]);
+
+ error+= diff*diff;
+ max_error= FFMAX(max_error, diff);
+ }
+ }
+ printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
+#if 0
+ printf("testing quantizer\n");
+ for(qp=0; qp<52; qp++){
+ for(i=0; i<16; i++)
+ src1_block[i]= src2_block[i]= random()%255;
+
+ }
+#endif
+ printf("Testing NAL layer\n");
+
+ uint8_t bitstream[COUNT];
+ uint8_t nal[COUNT*2];
+ H264Context h;
+ memset(&h, 0, sizeof(H264Context));
+
+ for(i=0; i<COUNT; i++){
+ int zeros= i;
+ int nal_length;
+ int consumed;
+ int out_length;
+ uint8_t *out;
+ int j;
+
+ for(j=0; j<COUNT; j++){
+ bitstream[j]= (random() % 255) + 1;
+ }
+
+ for(j=0; j<zeros; j++){
+ int pos= random() % COUNT;
+ while(bitstream[pos] == 0){
+ pos++;
+ pos %= COUNT;
+ }
+ bitstream[pos]=0;
+ }
+
+ START_TIMER
+
+ nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
+ if(nal_length<0){
+ printf("encoding failed\n");
+ return -1;
+ }
+
+ out= decode_nal(&h, nal, &out_length, &consumed, nal_length);
+
+ STOP_TIMER("NAL")
+
+ if(out_length != COUNT){
+ printf("incorrect length %d %d\n", out_length, COUNT);
+ return -1;
+ }
+
+ if(consumed != nal_length){
+ printf("incorrect consumed length %d %d\n", nal_length, consumed);
+ return -1;
+ }
+
+ if(memcmp(bitstream, out, COUNT)){
+ printf("missmatch\n");
+ return -1;
+ }
+ }
+
+ printf("Testing RBSP\n");
+
+
+ return 0;
+}
+#endif
+
+
+static int decode_end(AVCodecContext *avctx)
+{
+ H264Context *h = avctx->priv_data;
+ MpegEncContext *s = &h->s;
+
+ free_tables(h); //FIXME cleanup init stuff perhaps
+ MPV_common_end(s);
+
+// memset(h, 0, sizeof(H264Context));
+
+ return 0;
+}
+
+
+AVCodec h264_decoder = {
+ "h264",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_H264,
+ sizeof(H264Context),
+ decode_init,
+ NULL,
+ decode_end,
+ decode_frame,
+ /*CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | */CODEC_CAP_TRUNCATED,
+};
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-26 22:53:36 +0000