X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpeg12enc.c;h=17097db9097c0d250578c18c59a42c4d44a81908;hb=843cd4a3edf254c2a42663777c1633d67cbef238;hp=689a9ea74a367f55b8b6026f30c82658e083d7c8;hpb=eacced45c47222efebcf66bfced9375a16490e07;p=ffmpeg diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c index 689a9ea74a3..17097db9097 100644 --- a/libavcodec/mpeg12enc.c +++ b/libavcodec/mpeg12enc.c @@ -1,38 +1,41 @@ /* * MPEG1/2 encoder - * Copyright (c) 2000,2001 Fabrice Bellard. + * Copyright (c) 2000,2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file mpeg12enc.c + * @file * MPEG1/2 encoder */ #include "avcodec.h" #include "dsputil.h" +#include "mathops.h" #include "mpegvideo.h" #include "mpeg12.h" #include "mpeg12data.h" #include "bytestream.h" +#include "libavutil/log.h" +#include "libavutil/opt.h" static const uint8_t inv_non_linear_qscale[13] = { 0, 2, 4, 6, 8, @@ -71,11 +74,12 @@ static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){ for(i=0; i<128; i++){ int level= i-64; int run; + if (!level) + continue; for(run=0; run<64; run++){ - int len, bits, code; + int len, code; int alevel= FFABS(level); - int sign= (level>>31)&1; if (alevel > rl->max_level[0][run]) code= 111; /*rl->n*/ @@ -83,25 +87,15 @@ static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){ code= rl->index_run[0][run] + alevel - 1; if (code < 111 /* rl->n */) { - /* store the vlc & sign at once */ + /* length of vlc and sign */ len= rl->table_vlc[code][1]+1; - bits= (rl->table_vlc[code][0]<<1) + sign; } else { len= rl->table_vlc[111/*rl->n*/][1]+6; - bits= rl->table_vlc[111/*rl->n*/][0]<<6; - bits|= run; if (alevel < 128) { - bits<<=8; len+=8; - bits|= level & 0xff; + len += 8; } else { - bits<<=16; len+=16; - bits|= level & 0xff; - if (level < 0) { - bits|= 0x8001 + level + 255; - } else { - bits|= level & 0xffff; - } + len += 16; } } @@ -117,9 +111,9 @@ static int find_frame_rate_index(MpegEncContext *s){ int64_t d; for(i=1;i<14;i++) { - int64_t n0= 1001LL/ff_frame_rate_tab[i].den*ff_frame_rate_tab[i].num*s->avctx->time_base.num; + int64_t n0= 1001LL/avpriv_frame_rate_tab[i].den*avpriv_frame_rate_tab[i].num*s->avctx->time_base.num; int64_t n1= 1001LL*s->avctx->time_base.den; - if(s->avctx->strict_std_compliance > FF_COMPLIANCE_INOFFICIAL && i>=9) break; + if(s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL && i>=9) break; d = FFABS(n0 - n1); if(d < dmin){ @@ -140,6 +134,13 @@ static av_cold int encode_init(AVCodecContext *avctx) if(MPV_encode_init(avctx) < 0) return -1; +#if FF_API_MPEGVIDEO_GLOBAL_OPTS + if (avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) + s->drop_frame_timecode = 1; + if (avctx->flags & CODEC_FLAG_SVCD_SCAN_OFFSET) + s->scan_offset = 1; +#endif + if(find_frame_rate_index(s) < 0){ if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){ av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num); @@ -172,7 +173,7 @@ static av_cold int encode_init(AVCodecContext *avctx) } } - if((avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) && s->frame_rate_index != 4){ + if (s->drop_frame_timecode && s->frame_rate_index != 4) { av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n"); return -1; } @@ -182,9 +183,9 @@ static av_cold int encode_init(AVCodecContext *avctx) static void put_header(MpegEncContext *s, int header) { - align_put_bits(&s->pb); + avpriv_align_put_bits(&s->pb); put_bits(&s->pb, 16, header>>16); - put_bits(&s->pb, 16, header&0xFFFF); + put_sbits(&s->pb, 16, header); } /* put sequence header if needed */ @@ -200,14 +201,14 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s) if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA) - if (s->current_picture.key_frame) { - AVRational framerate= ff_frame_rate_tab[s->frame_rate_index]; + if (s->current_picture.f.key_frame) { + AVRational framerate= avpriv_frame_rate_tab[s->frame_rate_index]; /* mpeg1 header repeated every gop */ put_header(s, SEQ_START_CODE); - put_bits(&s->pb, 12, s->width); - put_bits(&s->pb, 12, s->height); + put_sbits(&s->pb, 12, s->width ); + put_sbits(&s->pb, 12, s->height); for(i=1; i<15; i++){ float error= aspect_ratio; @@ -242,9 +243,9 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s) vbv_buffer_size = (( 20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024; vbv_buffer_size= (vbv_buffer_size + 16383) / 16384; - put_bits(&s->pb, 18, v & 0x3FFFF); + put_sbits(&s->pb, 18, v); put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, 10, vbv_buffer_size & 0x3FF); + put_sbits(&s->pb, 10, vbv_buffer_size); constraint_parameter_flag= s->width <= 768 && s->height <= 576 && @@ -272,8 +273,8 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s) put_bits(&s->pb, 1, s->progressive_sequence); put_bits(&s->pb, 2, s->chroma_format); - put_bits(&s->pb, 2, 0); //horizontal size ext - put_bits(&s->pb, 2, 0); //vertical size ext + put_bits(&s->pb, 2, s->width >>12); + put_bits(&s->pb, 2, s->height>>12); put_bits(&s->pb, 12, v>>18); //bitrate ext put_bits(&s->pb, 1, 1); //marker put_bits(&s->pb, 8, vbv_buffer_size >>10); //vbv buffer ext @@ -283,14 +284,14 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s) } put_header(s, GOP_START_CODE); - put_bits(&s->pb, 1, !!(s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)); /* drop frame flag */ + put_bits(&s->pb, 1, s->drop_frame_timecode); /* drop frame flag */ /* time code : we must convert from the real frame rate to a fake mpeg frame rate in case of low frame rate */ fps = (framerate.num + framerate.den/2)/ framerate.den; - time_code = s->current_picture_ptr->coded_picture_number + s->avctx->timecode_frame_start; + time_code = s->current_picture_ptr->f.coded_picture_number + s->avctx->timecode_frame_start; - s->gop_picture_number = s->current_picture_ptr->coded_picture_number; - if (s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) { + s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number; + if (s->drop_frame_timecode) { /* only works for NTSC 29.97 */ int d = time_code / 17982; int m = time_code % 17982; @@ -327,7 +328,12 @@ static av_always_inline void put_qscale(MpegEncContext *s) } void ff_mpeg1_encode_slice_header(MpegEncContext *s){ - put_header(s, SLICE_MIN_START_CODE + s->mb_y); + if (s->height > 2800) { + put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127)); + put_bits(&s->pb, 3, s->mb_y >> 7); /* slice_vertical_position_extension */ + } else { + put_header(s, SLICE_MIN_START_CODE + s->mb_y); + } put_qscale(s); put_bits(&s->pb, 1, 0); /* slice extra information */ } @@ -349,7 +355,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */ // RAL: Forward f_code also needed for B frames - if (s->pict_type == FF_P_TYPE || s->pict_type == FF_B_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) { put_bits(&s->pb, 1, 0); /* half pel coordinates */ if(s->codec_id == CODEC_ID_MPEG1VIDEO) put_bits(&s->pb, 3, s->f_code); /* forward_f_code */ @@ -358,7 +364,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) } // RAL: Backward f_code necessary for B frames - if (s->pict_type == FF_B_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_B) { put_bits(&s->pb, 1, 0); /* half pel coordinates */ if(s->codec_id == CODEC_ID_MPEG1VIDEO) put_bits(&s->pb, 3, s->b_code); /* backward_f_code */ @@ -372,13 +378,13 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) if(s->codec_id == CODEC_ID_MPEG2VIDEO){ put_header(s, EXT_START_CODE); put_bits(&s->pb, 4, 8); //pic ext - if (s->pict_type == FF_P_TYPE || s->pict_type == FF_B_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) { put_bits(&s->pb, 4, s->f_code); put_bits(&s->pb, 4, s->f_code); }else{ put_bits(&s->pb, 8, 255); } - if (s->pict_type == FF_B_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_B) { put_bits(&s->pb, 4, s->b_code); put_bits(&s->pb, 4, s->b_code); }else{ @@ -391,7 +397,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) if (s->progressive_sequence) { put_bits(&s->pb, 1, 0); /* no repeat */ } else { - put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first); + put_bits(&s->pb, 1, s->current_picture_ptr->f.top_field_first); } /* XXX: optimize the generation of this flag with entropy measures */ @@ -408,7 +414,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) put_bits(&s->pb, 1, s->progressive_frame); put_bits(&s->pb, 1, 0); //composite_display_flag } - if(s->flags & CODEC_FLAG_SVCD_SCAN_OFFSET){ + if (s->scan_offset) { int i; put_header(s, USER_START_CODE); @@ -451,15 +457,15 @@ static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s, if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 && (mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) && - ((s->pict_type == FF_P_TYPE && (motion_x | motion_y) == 0) || - (s->pict_type == FF_B_TYPE && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) | + ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) || + (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) | ((s->mv_dir & MV_DIR_BACKWARD) ? ((s->mv[1][0][0] - s->last_mv[1][0][0])|(s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) { s->mb_skip_run++; s->qscale -= s->dquant; s->skip_count++; s->misc_bits++; s->last_bits++; - if(s->pict_type == FF_P_TYPE){ + if(s->pict_type == AV_PICTURE_TYPE_P){ s->last_mv[0][1][0]= s->last_mv[0][0][0]= s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0; } @@ -471,7 +477,7 @@ static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s, encode_mb_skip_run(s, s->mb_skip_run); } - if (s->pict_type == FF_I_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_I) { if(s->dquant && cbp){ put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */ put_qscale(s); @@ -492,7 +498,7 @@ static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s, s->misc_bits+= get_bits_diff(s); s->i_count++; memset(s->last_mv, 0, sizeof(s->last_mv)); - } else if (s->pict_type == FF_P_TYPE) { + } else if (s->pict_type == AV_PICTURE_TYPE_P) { if(s->mv_type == MV_TYPE_16X16){ if (cbp != 0) { if ((motion_x|motion_y) == 0) { @@ -557,7 +563,7 @@ static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s, put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]); } else { put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]); - put_bits(&s->pb, 2, cbp & 3); + put_sbits(&s->pb, 2, cbp); } } s->f_count++; @@ -640,7 +646,7 @@ static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s, put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]); } else { put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]); - put_bits(&s->pb, 2, cbp & 3); + put_sbits(&s->pb, 2, cbp); } } } @@ -666,20 +672,17 @@ void mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int // RAL: Parameter added: f_or_b_code static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code) { - int code, bit_size, l, bits, range, sign; - if (val == 0) { /* zero vector */ - code = 0; put_bits(&s->pb, ff_mpeg12_mbMotionVectorTable[0][1], ff_mpeg12_mbMotionVectorTable[0][0]); } else { - bit_size = f_or_b_code - 1; - range = 1 << bit_size; + int code, sign, bits; + int bit_size = f_or_b_code - 1; + int range = 1 << bit_size; /* modulo encoding */ - l= INT_BIT - 5 - bit_size; - val= (val<>l; + val = sign_extend(val, 5 + bit_size); if (val >= 0) { val--; @@ -758,10 +761,9 @@ void ff_mpeg1_encode_init(MpegEncContext *s) if(mv==0) len= ff_mpeg12_mbMotionVectorTable[0][1]; else{ - int val, bit_size, range, code; + int val, bit_size, code; bit_size = f_code - 1; - range = 1 << bit_size; val=mv; if (val < 0) @@ -885,10 +887,6 @@ static void mpeg1_encode_block(MpegEncContext *s, j = s->intra_scantable.permutated[i]; level = block[j]; next_coef: -#if 0 - if (level != 0) - dprintf(s->avctx, "level[%d]=%d\n", i, level); -#endif /* encode using VLC */ if (level != 0) { run = i - last_non_zero - 1; @@ -908,16 +906,16 @@ static void mpeg1_encode_block(MpegEncContext *s, put_bits(&s->pb, 6, run); if(s->codec_id == CODEC_ID_MPEG1VIDEO){ if (alevel < 128) { - put_bits(&s->pb, 8, level & 0xff); + put_sbits(&s->pb, 8, level); } else { if (level < 0) { put_bits(&s->pb, 16, 0x8001 + level + 255); } else { - put_bits(&s->pb, 16, level & 0xffff); + put_sbits(&s->pb, 16, level); } } }else{ - put_bits(&s->pb, 12, level & 0xfff); + put_sbits(&s->pb, 12, level); } } last_non_zero = i; @@ -927,30 +925,62 @@ static void mpeg1_encode_block(MpegEncContext *s, put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]); } -AVCodec mpeg1video_encoder = { - "mpeg1video", - CODEC_TYPE_VIDEO, - CODEC_ID_MPEG1VIDEO, - sizeof(MpegEncContext), - encode_init, - MPV_encode_picture, - MPV_encode_end, - .supported_framerates= ff_frame_rate_tab+1, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE}, - .capabilities= CODEC_CAP_DELAY, - .long_name= "MPEG-1 video", +#define OFFSET(x) offsetof(MpegEncContext, x) +#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM +#define COMMON_OPTS\ + { "intra_vlc", "Use MPEG-2 intra VLC table.", OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },\ + { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \ + { "scan_offset", "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE }, + +static const AVOption mpeg1_options[] = { + COMMON_OPTS + { NULL }, +}; + +static const AVOption mpeg2_options[] = { + COMMON_OPTS + { "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE }, + { "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE }, + { NULL }, +}; + +#define mpeg12_class(x)\ +static const AVClass mpeg## x ##_class = {\ + .class_name = "mpeg" #x "video encoder",\ + .item_name = av_default_item_name,\ + .option = mpeg## x ##_options,\ + .version = LIBAVUTIL_VERSION_INT,\ +}; + +mpeg12_class(1) +mpeg12_class(2) + +AVCodec ff_mpeg1video_encoder = { + .name = "mpeg1video", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_MPEG1VIDEO, + .priv_data_size = sizeof(MpegEncContext), + .init = encode_init, + .encode = MPV_encode_picture, + .close = MPV_encode_end, + .supported_framerates= avpriv_frame_rate_tab+1, + .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE}, + .capabilities= CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, + .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"), + .priv_class = &mpeg1_class, }; -AVCodec mpeg2video_encoder = { - "mpeg2video", - CODEC_TYPE_VIDEO, - CODEC_ID_MPEG2VIDEO, - sizeof(MpegEncContext), - encode_init, - MPV_encode_picture, - MPV_encode_end, - .supported_framerates= ff_frame_rate_tab+1, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE}, - .capabilities= CODEC_CAP_DELAY, - .long_name= "MPEG-2 video", +AVCodec ff_mpeg2video_encoder = { + .name = "mpeg2video", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_MPEG2VIDEO, + .priv_data_size = sizeof(MpegEncContext), + .init = encode_init, + .encode = MPV_encode_picture, + .close = MPV_encode_end, + .supported_framerates= avpriv_frame_rate_tab+1, + .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE}, + .capabilities= CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, + .long_name= NULL_IF_CONFIG_SMALL("MPEG-2 video"), + .priv_class = &mpeg2_class, };