diff options
author | Roman Shaposhnik <roman@shaposhnik.org> | 2004-03-14 23:45:42 +0000 |
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committer | Roman Shaposhnik <roman@shaposhnik.org> | 2004-03-14 23:45:42 +0000 |
commit | 6faa4645c5a8f7f2e80bbfa8e033c856c439df1c (patch) | |
tree | b52cc323fffc56a3fefada8b3b287409543c8e06 /libavcodec | |
parent | 380fd6b1b47b74162763fad9afcdc2a7ee061d49 (diff) | |
download | ffmpeg-6faa4645c5a8f7f2e80bbfa8e033c856c439df1c.tar.gz |
* DV decoding/encoding now supports MultiThreading for up to 324 CPUs ;-)
Originally committed as revision 2893 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/allcodecs.c | 1 | ||||
-rw-r--r-- | libavcodec/avcodec.h | 1 | ||||
-rw-r--r-- | libavcodec/dv.c | 195 |
3 files changed, 105 insertions, 92 deletions
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 524b5bf854..28880717cc 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -74,6 +74,7 @@ void avcodec_register_all(void) register_avcodec(&asv2_encoder); register_avcodec(&ffv1_encoder); register_avcodec(&zlib_encoder); + register_avcodec(&dvvideo_encoder); #endif /* CONFIG_ENCODERS */ register_avcodec(&rawvideo_encoder); register_avcodec(&rawvideo_decoder); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 53307882e6..e6fa42cdd2 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -1669,6 +1669,7 @@ extern AVCodec h263p_encoder; extern AVCodec flv_encoder; extern AVCodec rv10_encoder; extern AVCodec rv20_encoder; +extern AVCodec dvvideo_encoder; extern AVCodec mjpeg_encoder; extern AVCodec ljpeg_encoder; extern AVCodec mpeg4_encoder; diff --git a/libavcodec/dv.c b/libavcodec/dv.c index 1529efcc4b..45f68e2a69 100644 --- a/libavcodec/dv.c +++ b/libavcodec/dv.c @@ -33,9 +33,10 @@ #include "simple_idct.h" #include "dvdata.h" -typedef struct DVVideoDecodeContext { +typedef struct DVVideoContext { const DVprofile* sys; AVFrame picture; + uint8_t *buf; uint8_t dv_zigzag[2][64]; uint8_t dv_idct_shift[2][22][64]; @@ -43,10 +44,7 @@ typedef struct DVVideoDecodeContext { void (*get_pixels)(DCTELEM *block, const uint8_t *pixels, int line_size); void (*fdct[2])(DCTELEM *block); void (*idct_put[2])(uint8_t *dest, int line_size, DCTELEM *block); - - GetBitContext gb; - DCTELEM block[5*6][64] __align8; -} DVVideoDecodeContext; +} DVVideoContext; #define TEX_VLC_BITS 9 @@ -58,6 +56,9 @@ typedef struct DVVideoDecodeContext { #define DV_VLC_MAP_LEV_SIZE 512 #endif +/* MultiThreading */ +static uint8_t** dv_anchor; + /* XXX: also include quantization */ static RL_VLC_ELEM *dv_rl_vlc; /* VLC encoding lookup table */ @@ -66,7 +67,7 @@ static struct dv_vlc_pair { uint8_t size; } (*dv_vlc_map)[DV_VLC_MAP_LEV_SIZE] = NULL; -static void dv_build_unquantize_tables(DVVideoDecodeContext *s, uint8_t* perm) +static void dv_build_unquantize_tables(DVVideoContext *s, uint8_t* perm) { int i, q, j; @@ -91,7 +92,7 @@ static void dv_build_unquantize_tables(DVVideoDecodeContext *s, uint8_t* perm) static int dvvideo_init(AVCodecContext *avctx) { - DVVideoDecodeContext *s = avctx->priv_data; + DVVideoContext *s = avctx->priv_data; DSPContext dsp; static int done=0; int i, j; @@ -106,6 +107,14 @@ static int dvvideo_init(AVCodecContext *avctx) if (!dv_vlc_map) return -ENOMEM; + dv_anchor = av_malloc(12*27*sizeof(void*)); + if (!dv_anchor) { + av_free(dv_vlc_map); + return -ENOMEM; + } + for (i=0; i<12*27; i++) + (int)dv_anchor[i] = i; + /* NOTE: as a trick, we use the fact the no codes are unused to accelerate the parsing of partial codes */ init_vlc(&dv_vlc, TEX_VLC_BITS, NB_DV_VLC, @@ -113,6 +122,7 @@ static int dvvideo_init(AVCodecContext *avctx) dv_rl_vlc = av_malloc(dv_vlc.table_size * sizeof(RL_VLC_ELEM)); if (!dv_rl_vlc) { + av_free(dv_anchor); av_free(dv_vlc_map); return -ENOMEM; } @@ -199,6 +209,12 @@ static int dvvideo_init(AVCodecContext *avctx) return 0; } +static int dvvideo_end(AVCodecContext *avctx) +{ + avcodec_default_free_buffers(avctx); + return 0; +} + // #define VLC_DEBUG typedef struct BlockInfo { @@ -225,9 +241,9 @@ static const int mb_area_start[5] = { 1, 6, 21, 43, 64 }; #endif /* decode ac coefs */ -static void dv_decode_ac(DVVideoDecodeContext *s, BlockInfo *mb, DCTELEM *block) +static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, DCTELEM *block) { - int last_index = get_bits_size(&s->gb); + int last_index = get_bits_size(gb); int last_re_index; int shift_offset = mb->shift_offset; const uint8_t *scan_table = mb->scan_table; @@ -240,7 +256,7 @@ static void dv_decode_ac(DVVideoDecodeContext *s, BlockInfo *mb, DCTELEM *block) int re_index=0; int re1_index=0; #endif - OPEN_READER(re, &s->gb); + OPEN_READER(re, gb); #ifdef VLC_DEBUG printf("start\n"); @@ -256,11 +272,11 @@ static void dv_decode_ac(DVVideoDecodeContext *s, BlockInfo *mb, DCTELEM *block) /* build the dummy bit buffer */ l = 16 - partial_bit_count; - UPDATE_CACHE(re, &s->gb); + UPDATE_CACHE(re, gb); #ifdef VLC_DEBUG - printf("show=%04x\n", SHOW_UBITS(re, &s->gb, 16)); + printf("show=%04x\n", SHOW_UBITS(re, gb, 16)); #endif - v = (mb->partial_bit_buffer << l) | SHOW_UBITS(re, &s->gb, l); + v = (mb->partial_bit_buffer << l) | SHOW_UBITS(re, gb, l); buf[0] = v >> 8; buf[1] = v; #ifdef VLC_DEBUG @@ -294,34 +310,34 @@ static void dv_decode_ac(DVVideoDecodeContext *s, BlockInfo *mb, DCTELEM *block) /* by definition, if we can read the vlc, all partial bits will be read (otherwise we could have read the vlc before) */ mb->partial_bit_count = 0; - UPDATE_CACHE(re, &s->gb); + UPDATE_CACHE(re, gb); goto handle_vlc; } /* get the AC coefficients until last_index is reached */ for(;;) { - UPDATE_CACHE(re, &s->gb); + UPDATE_CACHE(re, gb); #ifdef VLC_DEBUG printf("%2d: bits=%04x index=%d\n", - pos, SHOW_UBITS(re, &s->gb, 16), re_index); + pos, SHOW_UBITS(re, gb, 16), re_index); #endif last_re_index = re_index; - GET_RL_VLC(level, run, re, &s->gb, dv_rl_vlc, + GET_RL_VLC(level, run, re, gb, dv_rl_vlc, TEX_VLC_BITS, 2); handle_vlc: #ifdef VLC_DEBUG printf("run=%d level=%d\n", run, level); #endif if (level) { - sign = SHOW_SBITS(re, &s->gb, 1); - LAST_SKIP_BITS(re, &s->gb, 1); + sign = SHOW_SBITS(re, gb, 1); + LAST_SKIP_BITS(re, gb, 1); } if (re_index > last_index) { /* should be < 16 bits otherwise a codeword could have been parsed */ re_index = last_re_index; - UPDATE_CACHE(re, &s->gb); + UPDATE_CACHE(re, gb); mb->partial_bit_count = last_index - re_index; - mb->partial_bit_buffer = SHOW_UBITS(re, &s->gb, mb->partial_bit_count); + mb->partial_bit_buffer = SHOW_UBITS(re, gb, mb->partial_bit_count); re_index = last_index; break; } @@ -338,7 +354,7 @@ static void dv_decode_ac(DVVideoDecodeContext *s, BlockInfo *mb, DCTELEM *block) // printf("run=%d level=%d shift=%d\n", run, level, shift_table[pos1]); } } - CLOSE_READER(re, &s->gb); + CLOSE_READER(re, gb); mb->pos = pos; } @@ -355,7 +371,7 @@ static inline void bit_copy(PutBitContext *pb, GetBitContext *gb) } /* mb_x and mb_y are in units of 8 pixels */ -static inline void dv_decode_video_segment(DVVideoDecodeContext *s, +static inline void dv_decode_video_segment(DVVideoContext *s, uint8_t *buf_ptr1, const uint16_t *mb_pos_ptr) { @@ -364,18 +380,20 @@ static inline void dv_decode_video_segment(DVVideoDecodeContext *s, DCTELEM *block, *block1; int c_offset; uint8_t *y_ptr; - BlockInfo mb_data[5 * 6], *mb, *mb1; void (*idct_put)(uint8_t *dest, int line_size, DCTELEM *block); uint8_t *buf_ptr; PutBitContext pb, vs_pb; + GetBitContext gb; + BlockInfo mb_data[5 * 6], *mb, *mb1; + DCTELEM sblock[5*6][64] __align8; uint8_t mb_bit_buffer[80 + 4]; /* allow some slack */ uint8_t vs_bit_buffer[5 * 80 + 4]; /* allow some slack */ - - memset(s->block, 0, sizeof(s->block)); + + memset(sblock, 0, sizeof(sblock)); /* pass 1 : read DC and AC coefficients in blocks */ buf_ptr = buf_ptr1; - block1 = &s->block[0][0]; + block1 = &sblock[0][0]; mb1 = mb_data; init_put_bits(&vs_pb, vs_bit_buffer, 5 * 80); for(mb_index = 0; mb_index < 5; mb_index++, mb1 += 6, block1 += 6 * 64) { @@ -387,15 +405,15 @@ static inline void dv_decode_video_segment(DVVideoDecodeContext *s, block = block1; for(j = 0;j < 6; j++) { last_index = block_sizes[j]; - init_get_bits(&s->gb, buf_ptr, last_index); + init_get_bits(&gb, buf_ptr, last_index); /* get the dc */ - dc = get_bits(&s->gb, 9); + dc = get_bits(&gb, 9); dc = (dc << (32 - 9)) >> (32 - 9); - dct_mode = get_bits1(&s->gb); + dct_mode = get_bits1(&gb); mb->dct_mode = dct_mode; mb->scan_table = s->dv_zigzag[dct_mode]; - class1 = get_bits(&s->gb, 2); + class1 = get_bits(&gb, 2); mb->shift_offset = (class1 == 3); mb->shift_table = s->dv_idct_shift[dct_mode] [quant + dv_quant_offset[class1]]; @@ -411,12 +429,12 @@ static inline void dv_decode_video_segment(DVVideoDecodeContext *s, #ifdef VLC_DEBUG printf("MB block: %d, %d ", mb_index, j); #endif - dv_decode_ac(s, mb, block); + dv_decode_ac(&gb, mb, block); /* write the remaining bits in a new buffer only if the block is finished */ if (mb->pos >= 64) - bit_copy(&pb, &s->gb); + bit_copy(&pb, &gb); block += 64; mb++; @@ -428,11 +446,11 @@ static inline void dv_decode_video_segment(DVVideoDecodeContext *s, #endif block = block1; mb = mb1; - init_get_bits(&s->gb, mb_bit_buffer, put_bits_count(&pb)); + init_get_bits(&gb, mb_bit_buffer, put_bits_count(&pb)); flush_put_bits(&pb); for(j = 0;j < 6; j++, block += 64, mb++) { - if (mb->pos < 64 && get_bits_left(&s->gb) > 0) { - dv_decode_ac(s, mb, block); + if (mb->pos < 64 && get_bits_left(&gb) > 0) { + dv_decode_ac(&gb, mb, block); /* if still not finished, no need to parse other blocks */ if (mb->pos < 64) break; @@ -441,16 +459,16 @@ static inline void dv_decode_video_segment(DVVideoDecodeContext *s, /* all blocks are finished, so the extra bytes can be used at the video segment level */ if (j >= 6) - bit_copy(&vs_pb, &s->gb); + bit_copy(&vs_pb, &gb); } /* we need a pass other the whole video segment */ #ifdef VLC_DEBUG printf("***pass 3 size=%d\n", put_bits_count(&vs_pb)); #endif - block = &s->block[0][0]; + block = &sblock[0][0]; mb = mb_data; - init_get_bits(&s->gb, vs_bit_buffer, put_bits_count(&vs_pb)); + init_get_bits(&gb, vs_bit_buffer, put_bits_count(&vs_pb)); flush_put_bits(&vs_pb); for(mb_index = 0; mb_index < 5; mb_index++) { for(j = 0;j < 6; j++) { @@ -458,7 +476,7 @@ static inline void dv_decode_video_segment(DVVideoDecodeContext *s, #ifdef VLC_DEBUG printf("start %d:%d\n", mb_index, j); #endif - dv_decode_ac(s, mb, block); + dv_decode_ac(&gb, mb, block); } if (mb->pos >= 64 && mb->pos < 127) av_log(NULL, AV_LOG_ERROR, "AC EOB marker is absent pos=%d\n", mb->pos); @@ -468,7 +486,7 @@ static inline void dv_decode_video_segment(DVVideoDecodeContext *s, } /* compute idct and place blocks */ - block = &s->block[0][0]; + block = &sblock[0][0]; mb = mb_data; for(mb_index = 0; mb_index < 5; mb_index++) { v = *mb_pos_ptr++; @@ -743,7 +761,7 @@ static inline void dv_guess_qnos(EncBlockInfo* blks, int* qnos) * horrible and the weighting is missing. But it's missing from the * decoding step also -- so at least we're on the same page with decoder ;-) */ -static inline void dv_encode_video_segment(DVVideoDecodeContext *s, +static inline void dv_encode_video_segment(DVVideoContext *s, uint8_t *dif, const uint16_t *mb_pos_ptr) { @@ -754,6 +772,7 @@ static inline void dv_encode_video_segment(DVVideoDecodeContext *s, uint8_t* ptr; int do_edge_wrap; DCTELEM block[64] __align8; + DCTELEM sblock[5*6][64] __align8; EncBlockInfo enc_blks[5*6]; PutBitContext pbs[5*6]; PutBitContext* pb; @@ -807,7 +826,7 @@ static inline void dv_encode_video_segment(DVVideoDecodeContext *s, } enc_blk->dct_mode = dv_guess_dct_mode(block); - enc_blk->mb = &s->block[mb_index*6+j][0]; + enc_blk->mb = &sblock[mb_index*6+j][0]; enc_blk->area_q[0] = enc_blk->area_q[1] = enc_blk->area_q[2] = enc_blk->area_q[3] = 0; enc_blk->partial_bit_count = 0; enc_blk->partial_bit_buffer = 0; @@ -859,15 +878,31 @@ static inline void dv_encode_video_segment(DVVideoDecodeContext *s, flush_put_bits(&pbs[j]); } +static int dv_decode_mt(AVCodecContext *avctx, void* sl) +{ + DVVideoContext *s = avctx->priv_data; + int slice = (int)sl; + dv_decode_video_segment(s, &s->buf[((slice/27)*6+(slice/3)+slice*5+7)*80], + &s->sys->video_place[slice*5]); + return 0; +} + +static int dv_encode_mt(AVCodecContext *avctx, void* sl) +{ + DVVideoContext *s = avctx->priv_data; + int slice = (int)sl; + dv_encode_video_segment(s, &s->buf[((slice/27)*6+(slice/3)+slice*5+7)*80], + &s->sys->video_place[slice*5]); + return 0; +} + /* NOTE: exactly one frame must be given (120000 bytes for NTSC, 144000 bytes for PAL) */ static int dvvideo_decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size) { - DVVideoDecodeContext *s = avctx->priv_data; - int ds, vs; - const uint16_t *mb_pos_ptr; + DVVideoContext *s = avctx->priv_data; *data_size=0; /* special case for last picture */ @@ -878,7 +913,6 @@ static int dvvideo_decode_frame(AVCodecContext *avctx, if (!s->sys || buf_size < s->sys->frame_size) return -1; /* NOTE: we only accept several full frames */ - if(s->picture.data[0]) avctx->release_buffer(avctx, &s->picture); @@ -893,24 +927,10 @@ static int dvvideo_decode_frame(AVCodecContext *avctx, s->picture.interlaced_frame = 1; s->picture.top_field_first = 0; - /* for each DIF segment */ - mb_pos_ptr = s->sys->video_place; - for (ds = 0; ds < s->sys->difseg_size; ds++) { - buf += 6 * 80; /* skip DIF segment header */ - - for(vs = 0; vs < 27; vs++) { - if ((vs % 3) == 0) - buf += 80; /* skip audio block */ - -#ifdef VLC_DEBUG - printf("********************* %d, %d **********************\n", ds, vs); -#endif - dv_decode_video_segment(s, buf, mb_pos_ptr); - buf += 5 * 80; - mb_pos_ptr += 5; - } - } - + s->buf = buf; + avctx->execute(avctx, dv_decode_mt, (void**)&dv_anchor[0], NULL, + s->sys->difseg_size * 27); + emms_c(); /* return image */ @@ -923,9 +943,7 @@ static int dvvideo_decode_frame(AVCodecContext *avctx, static int dvvideo_encode_frame(AVCodecContext *c, uint8_t *buf, int buf_size, void *data) { - DVVideoDecodeContext *s = c->priv_data; - const uint16_t *mb_pos_ptr; - int ds, vs; + DVVideoContext *s = c->priv_data; s->sys = dv_codec_profile(c); if (!s->sys) @@ -934,41 +952,34 @@ static int dvvideo_encode_frame(AVCodecContext *c, uint8_t *buf, int buf_size, c->pix_fmt = s->sys->pix_fmt; s->picture = *((AVFrame *)data); - /* for each DIF segment */ - mb_pos_ptr = s->sys->video_place; - for (ds = 0; ds < s->sys->difseg_size; ds++) { - buf += 6 * 80; /* skip DIF segment header */ - - for(vs = 0; vs < 27; vs++) { - if ((vs % 3) == 0) - buf += 80; /* skip audio block */ - -#ifdef VLC_DEBUG - printf("********************* %d, %d **********************\n", ds, vs); -#endif - dv_encode_video_segment(s, buf, mb_pos_ptr); - buf += 5 * 80; - mb_pos_ptr += 5; - } - } + s->buf = buf; + c->execute(c, dv_encode_mt, (void**)&dv_anchor[0], NULL, + s->sys->difseg_size * 27); emms_c(); return s->sys->frame_size; } -static int dvvideo_end(AVCodecContext *avctx) -{ - avcodec_default_free_buffers(avctx); - return 0; -} +AVCodec dvvideo_encoder = { + "dvvideo", + CODEC_TYPE_VIDEO, + CODEC_ID_DVVIDEO, + sizeof(DVVideoContext), + dvvideo_init, + dvvideo_encode_frame, + dvvideo_end, + NULL, + CODEC_CAP_DR1, + NULL +}; AVCodec dvvideo_decoder = { "dvvideo", CODEC_TYPE_VIDEO, CODEC_ID_DVVIDEO, - sizeof(DVVideoDecodeContext), + sizeof(DVVideoContext), dvvideo_init, - dvvideo_encode_frame, + NULL, dvvideo_end, dvvideo_decode_frame, CODEC_CAP_DR1, |