diff options
author | Peter Ross <pross@xvid.org> | 2009-02-05 08:58:35 +0000 |
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committer | Peter Ross <pross@xvid.org> | 2009-02-05 08:58:35 +0000 |
commit | d8964f3afadee3396ddebafd4eccc2e9e080076a (patch) | |
tree | f89125d9ccae09cb7c4965df8b44377abcc232c0 /libavcodec | |
parent | 44ba8b650fdde839d186cfc3634060c0b0dd47d1 (diff) | |
download | ffmpeg-d8964f3afadee3396ddebafd4eccc2e9e080076a.tar.gz |
Electronic Arts TQI decoder
Originally committed as revision 17002 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/Makefile | 1 | ||||
-rw-r--r-- | libavcodec/allcodecs.c | 1 | ||||
-rw-r--r-- | libavcodec/avcodec.h | 3 | ||||
-rw-r--r-- | libavcodec/eatqi.c | 166 |
4 files changed, 170 insertions, 1 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 7ccf694c2e..e580ed6d34 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -75,6 +75,7 @@ OBJS-$(CONFIG_EAC3_DECODER) += eac3dec.o ac3dec.o ac3tab.o ac3dec_dat OBJS-$(CONFIG_EACMV_DECODER) += eacmv.o OBJS-$(CONFIG_EATGQ_DECODER) += eatgq.o eaidct.o OBJS-$(CONFIG_EATGV_DECODER) += eatgv.o +OBJS-$(CONFIG_EATQI_DECODER) += eatqi.o eaidct.o OBJS-$(CONFIG_EIGHTBPS_DECODER) += 8bps.o OBJS-$(CONFIG_EIGHTSVX_EXP_DECODER) += 8svx.o OBJS-$(CONFIG_EIGHTSVX_FIB_DECODER) += 8svx.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 55f7f3b084..99ae346ce2 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -71,6 +71,7 @@ void avcodec_register_all(void) REGISTER_DECODER (EACMV, eacmv); REGISTER_DECODER (EATGQ, eatgq); REGISTER_DECODER (EATGV, eatgv); + REGISTER_DECODER (EATQI, eatqi); REGISTER_DECODER (EIGHTBPS, eightbps); REGISTER_DECODER (EIGHTSVX_EXP, eightsvx_exp); REGISTER_DECODER (EIGHTSVX_FIB, eightsvx_fib); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index b20910342d..d2b6fb3680 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -30,7 +30,7 @@ #include "libavutil/avutil.h" #define LIBAVCODEC_VERSION_MAJOR 52 -#define LIBAVCODEC_VERSION_MINOR 11 +#define LIBAVCODEC_VERSION_MINOR 12 #define LIBAVCODEC_VERSION_MICRO 0 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ @@ -190,6 +190,7 @@ enum CodecID { CODEC_ID_MOTIONPIXELS, CODEC_ID_TGV, CODEC_ID_TGQ, + CODEC_ID_TQI, /* various PCM "codecs" */ CODEC_ID_PCM_S16LE= 0x10000, diff --git a/libavcodec/eatqi.c b/libavcodec/eatqi.c new file mode 100644 index 0000000000..67b9478753 --- /dev/null +++ b/libavcodec/eatqi.c @@ -0,0 +1,166 @@ +/* + * Electronic Arts TQI Video Decoder + * Copyright (c) 2007-2009 Peter Ross <pross@xvid.org> + * + * This file is part of FFmpeg. + * + * FFmpeg 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 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file eatqi.c + * Electronic Arts TQI Video Decoder + * by Peter Ross <pross@xvid.org> + * + * Technical details here: + * http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TQI + */ + +#include "avcodec.h" +#include "bitstream.h" +#include "dsputil.h" +#include "aandcttab.h" +#include "mpeg12.h" +#include "mpegvideo.h" + +typedef struct TqiContext { + MpegEncContext s; + AVFrame frame; + uint8_t *bitstream_buf; + unsigned int bitstream_buf_size; +} TqiContext; + +static av_cold int tqi_decode_init(AVCodecContext *avctx) +{ + TqiContext *t = avctx->priv_data; + MpegEncContext *s = &t->s; + s->avctx = avctx; + if(avctx->idct_algo==FF_IDCT_AUTO) + avctx->idct_algo=FF_IDCT_EA; + dsputil_init(&s->dsp, avctx); + ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct); + s->qscale = 1; + avctx->time_base = (AVRational){1, 15}; + avctx->pix_fmt = PIX_FMT_YUV420P; + ff_mpeg12_init_vlcs(); + return 0; +} + +static void tqi_decode_mb(MpegEncContext *s, DCTELEM (*block)[64]) +{ + int n; + s->dsp.clear_blocks(block); + for (n=0; n<6; n++) + ff_mpeg1_decode_block_intra(s, block[n], n); +} + +static inline void tqi_idct_put(TqiContext *t, DCTELEM (*block)[64]) +{ + MpegEncContext *s = &t->s; + int linesize= t->frame.linesize[0]; + uint8_t *dest_y = t->frame.data[0] + (s->mb_y * 16* linesize ) + s->mb_x * 16; + uint8_t *dest_cb = t->frame.data[1] + (s->mb_y * 8 * t->frame.linesize[1]) + s->mb_x * 8; + uint8_t *dest_cr = t->frame.data[2] + (s->mb_y * 8 * t->frame.linesize[2]) + s->mb_x * 8; + + s->dsp.idct_put(dest_y , linesize, block[0]); + s->dsp.idct_put(dest_y + 8, linesize, block[1]); + s->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]); + s->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]); + if(!(s->avctx->flags&CODEC_FLAG_GRAY)) { + s->dsp.idct_put(dest_cb, t->frame.linesize[1], block[4]); + s->dsp.idct_put(dest_cr, t->frame.linesize[2], block[5]); + } +} + +static void tqi_calculate_qtable(MpegEncContext *s, int quant) +{ + const int qscale = (215 - 2*quant)*5; + int i; + if (s->avctx->idct_algo==FF_IDCT_EA) { + s->intra_matrix[0] = (ff_inv_aanscales[0]*ff_mpeg1_default_intra_matrix[0])>>11; + for(i=1; i<64; i++) + s->intra_matrix[i] = (ff_inv_aanscales[i]*ff_mpeg1_default_intra_matrix[i]*qscale + 32)>>14; + }else{ + s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0]; + for(i=1; i<64; i++) + s->intra_matrix[i] = (ff_mpeg1_default_intra_matrix[i]*qscale + 32)>>3; + } +} + +static int tqi_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + const uint8_t *buf, int buf_size) +{ + const uint8_t *buf_end = buf+buf_size; + TqiContext *t = avctx->priv_data; + MpegEncContext *s = &t->s; + DECLARE_ALIGNED_16(DCTELEM, block[6][64]); + + s->width = AV_RL16(&buf[0]); + s->height = AV_RL16(&buf[2]); + tqi_calculate_qtable(s, buf[4]); + buf += 8; + + if (t->frame.data[0]) + avctx->release_buffer(avctx, &t->frame); + + if (s->avctx->width!=s->width || s->avctx->height!=s->height) + avcodec_set_dimensions(s->avctx, s->width, s->height); + + if(avctx->get_buffer(avctx, &t->frame) < 0) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return -1; + } + + t->bitstream_buf = av_fast_realloc(t->bitstream_buf, &t->bitstream_buf_size, (buf_end-buf) + FF_INPUT_BUFFER_PADDING_SIZE); + if (!t->bitstream_buf) + return -1; + s->dsp.bswap_buf((uint32_t*)t->bitstream_buf, (const uint32_t*)buf, (buf_end-buf)/4); + init_get_bits(&s->gb, t->bitstream_buf, 8*(buf_end-buf)); + + s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 0; + for (s->mb_y=0; s->mb_y<(avctx->height+15)/16; s->mb_y++) + for (s->mb_x=0; s->mb_x<(avctx->width+15)/16; s->mb_x++) + { + tqi_decode_mb(s, block); + tqi_idct_put(t, block); + } + + *data_size = sizeof(AVFrame); + *(AVFrame*)data = t->frame; + return buf_size; +} + +static av_cold int tqi_decode_end(AVCodecContext *avctx) +{ + TqiContext *t = avctx->priv_data; + if(t->frame.data[0]) + avctx->release_buffer(avctx, &t->frame); + av_free(t->bitstream_buf); + return 0; +} + +AVCodec eatqi_decoder = { + "eatqi", + CODEC_TYPE_VIDEO, + CODEC_ID_TQI, + sizeof(TqiContext), + tqi_decode_init, + NULL, + tqi_decode_end, + tqi_decode_frame, + CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TQI Video"), +}; |