| /* |
| * MPEG-1/2 encoder |
| * Copyright (c) 2000,2001 Fabrice Bellard |
| * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * MPEG-1/2 encoder |
| */ |
| |
| #include <stdint.h> |
| |
| #include "config.h" |
| #include "libavutil/attributes.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/log.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/thread.h" |
| #include "libavutil/timecode.h" |
| #include "libavutil/stereo3d.h" |
| |
| #include "avcodec.h" |
| #include "bytestream.h" |
| #include "mathops.h" |
| #include "mpeg12.h" |
| #include "mpeg12data.h" |
| #include "mpegutils.h" |
| #include "mpegvideo.h" |
| #include "profiles.h" |
| |
| #if CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER |
| static const uint8_t svcd_scan_offset_placeholder[] = { |
| 0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80, |
| 0x81, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| }; |
| |
| static uint8_t mv_penalty[MAX_FCODE + 1][MAX_DMV * 2 + 1]; |
| static uint8_t fcode_tab[MAX_MV * 2 + 1]; |
| |
| static uint8_t uni_mpeg1_ac_vlc_len[64 * 64 * 2]; |
| static uint8_t uni_mpeg2_ac_vlc_len[64 * 64 * 2]; |
| |
| /* simple include everything table for dc, first byte is bits |
| * number next 3 are code */ |
| static uint32_t mpeg1_lum_dc_uni[512]; |
| static uint32_t mpeg1_chr_dc_uni[512]; |
| |
| static uint8_t mpeg1_index_run[2][64]; |
| static int8_t mpeg1_max_level[2][64]; |
| |
| #define A53_MAX_CC_COUNT 0x1f |
| #endif /* CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER */ |
| |
| av_cold void ff_mpeg1_init_uni_ac_vlc(const RLTable *rl, uint8_t *uni_ac_vlc_len) |
| { |
| int i; |
| |
| for (i = 0; i < 128; i++) { |
| int level = i - 64; |
| int run; |
| if (!level) |
| continue; |
| for (run = 0; run < 64; run++) { |
| int len, code; |
| int alevel = FFABS(level); |
| |
| if (alevel > rl->max_level[0][run]) |
| code = 111; /* rl->n */ |
| else |
| code = rl->index_run[0][run] + alevel - 1; |
| |
| if (code < 111) { /* rl->n */ |
| /* length of VLC and sign */ |
| len = rl->table_vlc[code][1] + 1; |
| } else { |
| len = rl->table_vlc[111 /* rl->n */][1] + 6; |
| |
| if (alevel < 128) |
| len += 8; |
| else |
| len += 16; |
| } |
| |
| uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len; |
| } |
| } |
| } |
| |
| #if CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER |
| static int find_frame_rate_index(MpegEncContext *s) |
| { |
| int i; |
| AVRational bestq = (AVRational) {0, 0}; |
| AVRational ext; |
| AVRational target = av_inv_q(s->avctx->time_base); |
| |
| for (i = 1; i < 14; i++) { |
| if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL && |
| i >= 9) |
| break; |
| |
| for (ext.num=1; ext.num <= 4; ext.num++) { |
| for (ext.den=1; ext.den <= 32; ext.den++) { |
| AVRational q = av_mul_q(ext, ff_mpeg12_frame_rate_tab[i]); |
| |
| if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO && (ext.den!=1 || ext.num!=1)) |
| continue; |
| if (av_gcd(ext.den, ext.num) != 1) |
| continue; |
| |
| if ( bestq.num==0 |
| || av_nearer_q(target, bestq, q) < 0 |
| || ext.num==1 && ext.den==1 && av_nearer_q(target, bestq, q) == 0) { |
| bestq = q; |
| s->frame_rate_index = i; |
| s->mpeg2_frame_rate_ext.num = ext.num; |
| s->mpeg2_frame_rate_ext.den = ext.den; |
| } |
| } |
| } |
| } |
| |
| if (av_cmp_q(target, bestq)) |
| return -1; |
| else |
| return 0; |
| } |
| |
| static av_cold int encode_init(AVCodecContext *avctx) |
| { |
| int ret; |
| MpegEncContext *s = avctx->priv_data; |
| |
| if ((ret = ff_mpv_encode_init(avctx)) < 0) |
| return ret; |
| |
| if (find_frame_rate_index(s) < 0) { |
| if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { |
| av_log(avctx, AV_LOG_ERROR, "MPEG-1/2 does not support %d/%d fps\n", |
| avctx->time_base.den, avctx->time_base.num); |
| return AVERROR(EINVAL); |
| } else { |
| av_log(avctx, AV_LOG_INFO, |
| "MPEG-1/2 does not support %d/%d fps, there may be AV sync issues\n", |
| avctx->time_base.den, avctx->time_base.num); |
| } |
| } |
| |
| if (avctx->profile == FF_PROFILE_UNKNOWN) { |
| if (avctx->level != FF_LEVEL_UNKNOWN) { |
| av_log(avctx, AV_LOG_ERROR, "Set profile and level\n"); |
| return AVERROR(EINVAL); |
| } |
| /* Main or 4:2:2 */ |
| avctx->profile = s->chroma_format == CHROMA_420 ? FF_PROFILE_MPEG2_MAIN : FF_PROFILE_MPEG2_422; |
| } |
| |
| if (avctx->level == FF_LEVEL_UNKNOWN) { |
| if (avctx->profile == FF_PROFILE_MPEG2_422) { /* 4:2:2 */ |
| if (avctx->width <= 720 && avctx->height <= 608) |
| avctx->level = 5; /* Main */ |
| else |
| avctx->level = 2; /* High */ |
| } else { |
| if (avctx->profile != FF_PROFILE_MPEG2_HIGH && s->chroma_format != CHROMA_420) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n"); |
| return AVERROR(EINVAL); |
| } |
| if (avctx->width <= 720 && avctx->height <= 576) |
| avctx->level = 8; /* Main */ |
| else if (avctx->width <= 1440) |
| avctx->level = 6; /* High 1440 */ |
| else |
| avctx->level = 4; /* High */ |
| } |
| } |
| |
| if ((avctx->width & 0xFFF) == 0 && (avctx->height & 0xFFF) == 1) { |
| av_log(avctx, AV_LOG_ERROR, "Width / Height is invalid for MPEG2\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) { |
| if ((avctx->width & 0xFFF) == 0 || (avctx->height & 0xFFF) == 0) { |
| av_log(avctx, AV_LOG_ERROR, "Width or Height are not allowed to be multiples of 4096\n" |
| "add '-strict %d' if you want to use them anyway.\n", FF_COMPLIANCE_UNOFFICIAL); |
| return AVERROR(EINVAL); |
| } |
| } |
| |
| s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & AV_CODEC_FLAG2_DROP_FRAME_TIMECODE); |
| if (s->drop_frame_timecode) |
| s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME; |
| 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 AVERROR(EINVAL); |
| } |
| |
| #if FF_API_PRIVATE_OPT |
| FF_DISABLE_DEPRECATION_WARNINGS |
| if (avctx->timecode_frame_start) |
| s->timecode_frame_start = avctx->timecode_frame_start; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| |
| if (s->tc_opt_str) { |
| AVRational rate = ff_mpeg12_frame_rate_tab[s->frame_rate_index]; |
| int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s); |
| if (ret < 0) |
| return ret; |
| s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME); |
| s->timecode_frame_start = s->tc.start; |
| } else { |
| s->timecode_frame_start = 0; // default is -1 |
| } |
| |
| return 0; |
| } |
| |
| static void put_header(MpegEncContext *s, int header) |
| { |
| align_put_bits(&s->pb); |
| put_bits(&s->pb, 16, header >> 16); |
| put_sbits(&s->pb, 16, header); |
| } |
| |
| /* put sequence header if needed */ |
| static void mpeg1_encode_sequence_header(MpegEncContext *s) |
| { |
| unsigned int vbv_buffer_size, fps, v; |
| int i, constraint_parameter_flag; |
| uint64_t time_code; |
| int64_t best_aspect_error = INT64_MAX; |
| AVRational aspect_ratio = s->avctx->sample_aspect_ratio; |
| |
| if (aspect_ratio.num == 0 || aspect_ratio.den == 0) |
| aspect_ratio = (AVRational){1,1}; // pixel aspect 1.1 (VGA) |
| |
| if (s->current_picture.f->key_frame) { |
| AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index]; |
| |
| /* MPEG-1 header repeated every GOP */ |
| put_header(s, SEQ_START_CODE); |
| |
| put_sbits(&s->pb, 12, s->width & 0xFFF); |
| put_sbits(&s->pb, 12, s->height & 0xFFF); |
| |
| for (i = 1; i < 15; i++) { |
| int64_t error = aspect_ratio.num * (1LL<<32) / aspect_ratio.den; |
| if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1) |
| error -= (1LL<<32) / ff_mpeg1_aspect[i]; |
| else |
| error -= (1LL<<32)*ff_mpeg2_aspect[i].num * s->height / s->width / ff_mpeg2_aspect[i].den; |
| |
| error = FFABS(error); |
| |
| if (error - 2 <= best_aspect_error) { |
| best_aspect_error = error; |
| s->aspect_ratio_info = i; |
| } |
| } |
| |
| put_bits(&s->pb, 4, s->aspect_ratio_info); |
| put_bits(&s->pb, 4, s->frame_rate_index); |
| |
| if (s->avctx->rc_max_rate) { |
| v = (s->avctx->rc_max_rate + 399) / 400; |
| if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO) |
| v = 0x3ffff; |
| } else { |
| v = 0x3FFFF; |
| } |
| |
| if (s->avctx->rc_buffer_size) |
| vbv_buffer_size = s->avctx->rc_buffer_size; |
| else |
| /* VBV calculation: Scaled so that a VCD has the proper |
| * VBV size of 40 kilobytes */ |
| vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024; |
| vbv_buffer_size = (vbv_buffer_size + 16383) / 16384; |
| |
| put_sbits(&s->pb, 18, v); |
| put_bits(&s->pb, 1, 1); // marker |
| put_sbits(&s->pb, 10, vbv_buffer_size); |
| |
| constraint_parameter_flag = |
| s->width <= 768 && |
| s->height <= 576 && |
| s->mb_width * s->mb_height <= 396 && |
| s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den && |
| framerate.num <= framerate.den * 30 && |
| s->avctx->me_range && |
| s->avctx->me_range < 128 && |
| vbv_buffer_size <= 20 && |
| v <= 1856000 / 400 && |
| s->codec_id == AV_CODEC_ID_MPEG1VIDEO; |
| |
| put_bits(&s->pb, 1, constraint_parameter_flag); |
| |
| ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix); |
| ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix); |
| |
| if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
| AVFrameSideData *side_data; |
| int width = s->width; |
| int height = s->height; |
| int use_seq_disp_ext; |
| |
| put_header(s, EXT_START_CODE); |
| put_bits(&s->pb, 4, 1); // seq ext |
| |
| put_bits(&s->pb, 1, s->avctx->profile == FF_PROFILE_MPEG2_422); // escx 1 for 4:2:2 profile |
| |
| put_bits(&s->pb, 3, s->avctx->profile); // profile |
| put_bits(&s->pb, 4, s->avctx->level); // level |
| |
| put_bits(&s->pb, 1, s->progressive_sequence); |
| put_bits(&s->pb, 2, s->chroma_format); |
| 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 |
| put_bits(&s->pb, 1, s->low_delay); |
| put_bits(&s->pb, 2, s->mpeg2_frame_rate_ext.num-1); // frame_rate_ext_n |
| put_bits(&s->pb, 5, s->mpeg2_frame_rate_ext.den-1); // frame_rate_ext_d |
| |
| side_data = av_frame_get_side_data(s->current_picture_ptr->f, AV_FRAME_DATA_PANSCAN); |
| if (side_data) { |
| AVPanScan *pan_scan = (AVPanScan *)side_data->data; |
| if (pan_scan->width && pan_scan->height) { |
| width = pan_scan->width >> 4; |
| height = pan_scan->height >> 4; |
| } |
| } |
| |
| use_seq_disp_ext = (width != s->width || |
| height != s->height || |
| s->avctx->color_primaries != AVCOL_PRI_UNSPECIFIED || |
| s->avctx->color_trc != AVCOL_TRC_UNSPECIFIED || |
| s->avctx->colorspace != AVCOL_SPC_UNSPECIFIED || |
| s->video_format != VIDEO_FORMAT_UNSPECIFIED); |
| |
| if (s->seq_disp_ext == 1 || (s->seq_disp_ext == -1 && use_seq_disp_ext)) { |
| put_header(s, EXT_START_CODE); |
| put_bits(&s->pb, 4, 2); // sequence display extension |
| put_bits(&s->pb, 3, s->video_format); // video_format |
| put_bits(&s->pb, 1, 1); // colour_description |
| put_bits(&s->pb, 8, s->avctx->color_primaries); // colour_primaries |
| put_bits(&s->pb, 8, s->avctx->color_trc); // transfer_characteristics |
| put_bits(&s->pb, 8, s->avctx->colorspace); // matrix_coefficients |
| put_bits(&s->pb, 14, width); // display_horizontal_size |
| put_bits(&s->pb, 1, 1); // marker_bit |
| put_bits(&s->pb, 14, height); // display_vertical_size |
| put_bits(&s->pb, 3, 0); // remaining 3 bits are zero padding |
| } |
| } |
| |
| put_header(s, GOP_START_CODE); |
| 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->f->coded_picture_number + |
| s->timecode_frame_start; |
| |
| s->gop_picture_number = s->current_picture_ptr->f->coded_picture_number; |
| |
| av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME)); |
| if (s->drop_frame_timecode) |
| time_code = av_timecode_adjust_ntsc_framenum2(time_code, fps); |
| |
| put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24)); |
| put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60)); |
| put_bits(&s->pb, 1, 1); |
| put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60)); |
| put_bits(&s->pb, 6, (uint32_t)((time_code % fps))); |
| put_bits(&s->pb, 1, !!(s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) || s->intra_only || !s->gop_picture_number); |
| put_bits(&s->pb, 1, 0); // broken link |
| } |
| } |
| |
| static inline void encode_mb_skip_run(MpegEncContext *s, int run) |
| { |
| while (run >= 33) { |
| put_bits(&s->pb, 11, 0x008); |
| run -= 33; |
| } |
| put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1], |
| ff_mpeg12_mbAddrIncrTable[run][0]); |
| } |
| |
| static av_always_inline void put_qscale(MpegEncContext *s) |
| { |
| put_bits(&s->pb, 5, s->qscale); |
| } |
| |
| void ff_mpeg1_encode_slice_header(MpegEncContext *s) |
| { |
| if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->height > 2800) { |
| put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127)); |
| /* slice_vertical_position_extension */ |
| put_bits(&s->pb, 3, s->mb_y >> 7); |
| } else { |
| put_header(s, SLICE_MIN_START_CODE + s->mb_y); |
| } |
| put_qscale(s); |
| /* slice extra information */ |
| put_bits(&s->pb, 1, 0); |
| } |
| |
| void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) |
| { |
| AVFrameSideData *side_data; |
| mpeg1_encode_sequence_header(s); |
| |
| /* MPEG-1 picture header */ |
| put_header(s, PICTURE_START_CODE); |
| /* temporal reference */ |
| |
| // RAL: s->picture_number instead of s->fake_picture_number |
| put_bits(&s->pb, 10, |
| (s->picture_number - s->gop_picture_number) & 0x3ff); |
| put_bits(&s->pb, 3, s->pict_type); |
| |
| s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8; |
| put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */ |
| |
| // RAL: Forward f_code also needed for B-frames |
| 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 == AV_CODEC_ID_MPEG1VIDEO) |
| put_bits(&s->pb, 3, s->f_code); /* forward_f_code */ |
| else |
| put_bits(&s->pb, 3, 7); /* forward_f_code */ |
| } |
| |
| // RAL: Backward f_code necessary for B-frames |
| if (s->pict_type == AV_PICTURE_TYPE_B) { |
| put_bits(&s->pb, 1, 0); /* half pel coordinates */ |
| if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) |
| put_bits(&s->pb, 3, s->b_code); /* backward_f_code */ |
| else |
| put_bits(&s->pb, 3, 7); /* backward_f_code */ |
| } |
| |
| put_bits(&s->pb, 1, 0); /* extra bit picture */ |
| |
| s->frame_pred_frame_dct = 1; |
| if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
| put_header(s, EXT_START_CODE); |
| put_bits(&s->pb, 4, 8); /* pic ext */ |
| 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 == AV_PICTURE_TYPE_B) { |
| put_bits(&s->pb, 4, s->b_code); |
| put_bits(&s->pb, 4, s->b_code); |
| } else { |
| put_bits(&s->pb, 8, 255); |
| } |
| put_bits(&s->pb, 2, s->intra_dc_precision); |
| |
| av_assert0(s->picture_structure == PICT_FRAME); |
| put_bits(&s->pb, 2, s->picture_structure); |
| if (s->progressive_sequence) |
| put_bits(&s->pb, 1, 0); /* no repeat */ |
| else |
| put_bits(&s->pb, 1, s->current_picture_ptr->f->top_field_first); |
| /* XXX: optimize the generation of this flag with entropy measures */ |
| s->frame_pred_frame_dct = s->progressive_sequence; |
| |
| put_bits(&s->pb, 1, s->frame_pred_frame_dct); |
| put_bits(&s->pb, 1, s->concealment_motion_vectors); |
| put_bits(&s->pb, 1, s->q_scale_type); |
| put_bits(&s->pb, 1, s->intra_vlc_format); |
| put_bits(&s->pb, 1, s->alternate_scan); |
| put_bits(&s->pb, 1, s->repeat_first_field); |
| s->progressive_frame = s->progressive_sequence; |
| /* chroma_420_type */ |
| put_bits(&s->pb, 1, s->chroma_format == |
| CHROMA_420 ? s->progressive_frame : 0); |
| put_bits(&s->pb, 1, s->progressive_frame); |
| put_bits(&s->pb, 1, 0); /* composite_display_flag */ |
| } |
| if (s->scan_offset) { |
| int i; |
| |
| put_header(s, USER_START_CODE); |
| for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++) |
| put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]); |
| } |
| side_data = av_frame_get_side_data(s->current_picture_ptr->f, |
| AV_FRAME_DATA_STEREO3D); |
| if (side_data) { |
| AVStereo3D *stereo = (AVStereo3D *)side_data->data; |
| uint8_t fpa_type; |
| |
| switch (stereo->type) { |
| case AV_STEREO3D_SIDEBYSIDE: |
| fpa_type = 0x03; |
| break; |
| case AV_STEREO3D_TOPBOTTOM: |
| fpa_type = 0x04; |
| break; |
| case AV_STEREO3D_2D: |
| fpa_type = 0x08; |
| break; |
| case AV_STEREO3D_SIDEBYSIDE_QUINCUNX: |
| fpa_type = 0x23; |
| break; |
| default: |
| fpa_type = 0; |
| break; |
| } |
| |
| if (fpa_type != 0) { |
| put_header(s, USER_START_CODE); |
| put_bits(&s->pb, 8, 'J'); // S3D_video_format_signaling_identifier |
| put_bits(&s->pb, 8, 'P'); |
| put_bits(&s->pb, 8, '3'); |
| put_bits(&s->pb, 8, 'D'); |
| put_bits(&s->pb, 8, 0x03); // S3D_video_format_length |
| |
| put_bits(&s->pb, 1, 1); // reserved_bit |
| put_bits(&s->pb, 7, fpa_type); // S3D_video_format_type |
| put_bits(&s->pb, 8, 0x04); // reserved_data[0] |
| put_bits(&s->pb, 8, 0xFF); // reserved_data[1] |
| } |
| } |
| |
| if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->a53_cc) { |
| side_data = av_frame_get_side_data(s->current_picture_ptr->f, |
| AV_FRAME_DATA_A53_CC); |
| if (side_data) { |
| if (side_data->size <= A53_MAX_CC_COUNT * 3 && side_data->size % 3 == 0) { |
| int i = 0; |
| |
| put_header (s, USER_START_CODE); |
| |
| put_bits(&s->pb, 8, 'G'); // user_identifier |
| put_bits(&s->pb, 8, 'A'); |
| put_bits(&s->pb, 8, '9'); |
| put_bits(&s->pb, 8, '4'); |
| put_bits(&s->pb, 8, 3); // user_data_type_code |
| put_bits(&s->pb, 8, |
| (side_data->size / 3 & A53_MAX_CC_COUNT) | 0x40); // flags, cc_count |
| put_bits(&s->pb, 8, 0xff); // em_data |
| |
| for (i = 0; i < side_data->size; i++) |
| put_bits(&s->pb, 8, side_data->data[i]); |
| |
| put_bits(&s->pb, 8, 0xff); // marker_bits |
| } else { |
| av_log(s->avctx, AV_LOG_WARNING, |
| "Warning Closed Caption size (%d) can not exceed 93 bytes " |
| "and must be a multiple of 3\n", side_data->size); |
| } |
| } |
| } |
| |
| s->mb_y = 0; |
| ff_mpeg1_encode_slice_header(s); |
| } |
| |
| static inline void put_mb_modes(MpegEncContext *s, int n, int bits, |
| int has_mv, int field_motion) |
| { |
| put_bits(&s->pb, n, bits); |
| if (!s->frame_pred_frame_dct) { |
| if (has_mv) |
| /* motion_type: frame/field */ |
| put_bits(&s->pb, 2, 2 - field_motion); |
| put_bits(&s->pb, 1, s->interlaced_dct); |
| } |
| } |
| |
| // RAL: Parameter added: f_or_b_code |
| static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code) |
| { |
| if (val == 0) { |
| /* zero vector */ |
| put_bits(&s->pb, |
| ff_mpeg12_mbMotionVectorTable[0][1], |
| ff_mpeg12_mbMotionVectorTable[0][0]); |
| } else { |
| int code, sign, bits; |
| int bit_size = f_or_b_code - 1; |
| int range = 1 << bit_size; |
| /* modulo encoding */ |
| val = sign_extend(val, 5 + bit_size); |
| |
| if (val >= 0) { |
| val--; |
| code = (val >> bit_size) + 1; |
| bits = val & (range - 1); |
| sign = 0; |
| } else { |
| val = -val; |
| val--; |
| code = (val >> bit_size) + 1; |
| bits = val & (range - 1); |
| sign = 1; |
| } |
| |
| av_assert2(code > 0 && code <= 16); |
| |
| put_bits(&s->pb, |
| ff_mpeg12_mbMotionVectorTable[code][1], |
| ff_mpeg12_mbMotionVectorTable[code][0]); |
| |
| put_bits(&s->pb, 1, sign); |
| if (bit_size > 0) |
| put_bits(&s->pb, bit_size, bits); |
| } |
| } |
| |
| static inline void encode_dc(MpegEncContext *s, int diff, int component) |
| { |
| unsigned int diff_u = diff + 255; |
| if (diff_u >= 511) { |
| int index; |
| |
| if (diff < 0) { |
| index = av_log2_16bit(-2 * diff); |
| diff--; |
| } else { |
| index = av_log2_16bit(2 * diff); |
| } |
| if (component == 0) |
| put_bits(&s->pb, |
| ff_mpeg12_vlc_dc_lum_bits[index] + index, |
| (ff_mpeg12_vlc_dc_lum_code[index] << index) + |
| av_mod_uintp2(diff, index)); |
| else |
| put_bits(&s->pb, |
| ff_mpeg12_vlc_dc_chroma_bits[index] + index, |
| (ff_mpeg12_vlc_dc_chroma_code[index] << index) + |
| av_mod_uintp2(diff, index)); |
| } else { |
| if (component == 0) |
| put_bits(&s->pb, |
| mpeg1_lum_dc_uni[diff + 255] & 0xFF, |
| mpeg1_lum_dc_uni[diff + 255] >> 8); |
| else |
| put_bits(&s->pb, |
| mpeg1_chr_dc_uni[diff + 255] & 0xFF, |
| mpeg1_chr_dc_uni[diff + 255] >> 8); |
| } |
| } |
| |
| static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n) |
| { |
| int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign; |
| int code, component; |
| const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc; |
| |
| last_index = s->block_last_index[n]; |
| |
| /* DC coef */ |
| if (s->mb_intra) { |
| component = (n <= 3 ? 0 : (n & 1) + 1); |
| dc = block[0]; /* overflow is impossible */ |
| diff = dc - s->last_dc[component]; |
| encode_dc(s, diff, component); |
| s->last_dc[component] = dc; |
| i = 1; |
| if (s->intra_vlc_format) |
| table_vlc = ff_rl_mpeg2.table_vlc; |
| } else { |
| /* encode the first coefficient: needs to be done here because |
| * it is handled slightly differently */ |
| level = block[0]; |
| if (abs(level) == 1) { |
| code = ((uint32_t)level >> 31); /* the sign bit */ |
| put_bits(&s->pb, 2, code | 0x02); |
| i = 1; |
| } else { |
| i = 0; |
| last_non_zero = -1; |
| goto next_coef; |
| } |
| } |
| |
| /* now quantify & encode AC coefs */ |
| last_non_zero = i - 1; |
| |
| for (; i <= last_index; i++) { |
| j = s->intra_scantable.permutated[i]; |
| level = block[j]; |
| |
| next_coef: |
| /* encode using VLC */ |
| if (level != 0) { |
| run = i - last_non_zero - 1; |
| |
| alevel = level; |
| MASK_ABS(sign, alevel); |
| sign &= 1; |
| |
| if (alevel <= mpeg1_max_level[0][run]) { |
| code = mpeg1_index_run[0][run] + alevel - 1; |
| /* store the VLC & sign at once */ |
| put_bits(&s->pb, table_vlc[code][1] + 1, |
| (table_vlc[code][0] << 1) + sign); |
| } else { |
| /* escape seems to be pretty rare <5% so I do not optimize it */ |
| put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]); |
| /* escape: only clip in this case */ |
| put_bits(&s->pb, 6, run); |
| if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) { |
| if (alevel < 128) { |
| put_sbits(&s->pb, 8, level); |
| } else { |
| if (level < 0) |
| put_bits(&s->pb, 16, 0x8001 + level + 255); |
| else |
| put_sbits(&s->pb, 16, level); |
| } |
| } else { |
| put_sbits(&s->pb, 12, level); |
| } |
| } |
| last_non_zero = i; |
| } |
| } |
| /* end of block */ |
| put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]); |
| } |
| |
| static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s, |
| int16_t block[8][64], |
| int motion_x, int motion_y, |
| int mb_block_count) |
| { |
| int i, cbp; |
| const int mb_x = s->mb_x; |
| const int mb_y = s->mb_y; |
| const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y; |
| |
| /* compute cbp */ |
| cbp = 0; |
| for (i = 0; i < mb_block_count; i++) |
| if (s->block_last_index[i] >= 0) |
| cbp |= 1 << (mb_block_count - 1 - i); |
| |
| if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 && |
| (mb_x != s->mb_width - 1 || |
| (mb_y != s->end_mb_y - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) && |
| ((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 == AV_PICTURE_TYPE_P) { |
| s->last_mv[0][0][0] = |
| s->last_mv[0][0][1] = |
| s->last_mv[0][1][0] = |
| s->last_mv[0][1][1] = 0; |
| } |
| } else { |
| if (first_mb) { |
| av_assert0(s->mb_skip_run == 0); |
| encode_mb_skip_run(s, s->mb_x); |
| } else { |
| encode_mb_skip_run(s, s->mb_skip_run); |
| } |
| |
| if (s->pict_type == AV_PICTURE_TYPE_I) { |
| if (s->dquant && cbp) { |
| /* macroblock_type: macroblock_quant = 1 */ |
| put_mb_modes(s, 2, 1, 0, 0); |
| put_qscale(s); |
| } else { |
| /* macroblock_type: macroblock_quant = 0 */ |
| put_mb_modes(s, 1, 1, 0, 0); |
| s->qscale -= s->dquant; |
| } |
| s->misc_bits += get_bits_diff(s); |
| s->i_count++; |
| } else if (s->mb_intra) { |
| if (s->dquant && cbp) { |
| put_mb_modes(s, 6, 0x01, 0, 0); |
| put_qscale(s); |
| } else { |
| put_mb_modes(s, 5, 0x03, 0, 0); |
| s->qscale -= s->dquant; |
| } |
| s->misc_bits += get_bits_diff(s); |
| s->i_count++; |
| memset(s->last_mv, 0, sizeof(s->last_mv)); |
| } 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) { |
| if (s->dquant) { |
| /* macroblock_pattern & quant */ |
| put_mb_modes(s, 5, 1, 0, 0); |
| put_qscale(s); |
| } else { |
| /* macroblock_pattern only */ |
| put_mb_modes(s, 2, 1, 0, 0); |
| } |
| s->misc_bits += get_bits_diff(s); |
| } else { |
| if (s->dquant) { |
| put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */ |
| put_qscale(s); |
| } else { |
| put_mb_modes(s, 1, 1, 1, 0); /* motion + cbp */ |
| } |
| s->misc_bits += get_bits_diff(s); |
| // RAL: f_code parameter added |
| mpeg1_encode_motion(s, |
| motion_x - s->last_mv[0][0][0], |
| s->f_code); |
| // RAL: f_code parameter added |
| mpeg1_encode_motion(s, |
| motion_y - s->last_mv[0][0][1], |
| s->f_code); |
| s->mv_bits += get_bits_diff(s); |
| } |
| } else { |
| put_bits(&s->pb, 3, 1); /* motion only */ |
| if (!s->frame_pred_frame_dct) |
| put_bits(&s->pb, 2, 2); /* motion_type: frame */ |
| s->misc_bits += get_bits_diff(s); |
| // RAL: f_code parameter added |
| mpeg1_encode_motion(s, |
| motion_x - s->last_mv[0][0][0], |
| s->f_code); |
| // RAL: f_code parameter added |
| mpeg1_encode_motion(s, |
| motion_y - s->last_mv[0][0][1], |
| s->f_code); |
| s->qscale -= s->dquant; |
| s->mv_bits += get_bits_diff(s); |
| } |
| s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x; |
| s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y; |
| } else { |
| av_assert2(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD); |
| |
| if (cbp) { |
| if (s->dquant) { |
| put_mb_modes(s, 5, 2, 1, 1); /* motion + cbp */ |
| put_qscale(s); |
| } else { |
| put_mb_modes(s, 1, 1, 1, 1); /* motion + cbp */ |
| } |
| } else { |
| put_bits(&s->pb, 3, 1); /* motion only */ |
| put_bits(&s->pb, 2, 1); /* motion_type: field */ |
| s->qscale -= s->dquant; |
| } |
| s->misc_bits += get_bits_diff(s); |
| for (i = 0; i < 2; i++) { |
| put_bits(&s->pb, 1, s->field_select[0][i]); |
| mpeg1_encode_motion(s, |
| s->mv[0][i][0] - s->last_mv[0][i][0], |
| s->f_code); |
| mpeg1_encode_motion(s, |
| s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1), |
| s->f_code); |
| s->last_mv[0][i][0] = s->mv[0][i][0]; |
| s->last_mv[0][i][1] = 2 * s->mv[0][i][1]; |
| } |
| s->mv_bits += get_bits_diff(s); |
| } |
| if (cbp) { |
| if (s->chroma_y_shift) { |
| 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_sbits(&s->pb, 2, cbp); |
| } |
| } |
| s->f_count++; |
| } else { |
| if (s->mv_type == MV_TYPE_16X16) { |
| if (cbp) { // With coded bloc pattern |
| if (s->dquant) { |
| if (s->mv_dir == MV_DIR_FORWARD) |
| put_mb_modes(s, 6, 3, 1, 0); |
| else |
| put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0); |
| put_qscale(s); |
| } else { |
| put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0); |
| } |
| } else { // No coded bloc pattern |
| put_bits(&s->pb, 5 - s->mv_dir, 2); |
| if (!s->frame_pred_frame_dct) |
| put_bits(&s->pb, 2, 2); /* motion_type: frame */ |
| s->qscale -= s->dquant; |
| } |
| s->misc_bits += get_bits_diff(s); |
| if (s->mv_dir & MV_DIR_FORWARD) { |
| mpeg1_encode_motion(s, |
| s->mv[0][0][0] - s->last_mv[0][0][0], |
| s->f_code); |
| mpeg1_encode_motion(s, |
| s->mv[0][0][1] - s->last_mv[0][0][1], |
| s->f_code); |
| s->last_mv[0][0][0] = |
| s->last_mv[0][1][0] = s->mv[0][0][0]; |
| s->last_mv[0][0][1] = |
| s->last_mv[0][1][1] = s->mv[0][0][1]; |
| s->f_count++; |
| } |
| if (s->mv_dir & MV_DIR_BACKWARD) { |
| mpeg1_encode_motion(s, |
| s->mv[1][0][0] - s->last_mv[1][0][0], |
| s->b_code); |
| mpeg1_encode_motion(s, |
| s->mv[1][0][1] - s->last_mv[1][0][1], |
| s->b_code); |
| s->last_mv[1][0][0] = |
| s->last_mv[1][1][0] = s->mv[1][0][0]; |
| s->last_mv[1][0][1] = |
| s->last_mv[1][1][1] = s->mv[1][0][1]; |
| s->b_count++; |
| } |
| } else { |
| av_assert2(s->mv_type == MV_TYPE_FIELD); |
| av_assert2(!s->frame_pred_frame_dct); |
| if (cbp) { // With coded bloc pattern |
| if (s->dquant) { |
| if (s->mv_dir == MV_DIR_FORWARD) |
| put_mb_modes(s, 6, 3, 1, 1); |
| else |
| put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1); |
| put_qscale(s); |
| } else { |
| put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1); |
| } |
| } else { // No coded bloc pattern |
| put_bits(&s->pb, 5 - s->mv_dir, 2); |
| put_bits(&s->pb, 2, 1); /* motion_type: field */ |
| s->qscale -= s->dquant; |
| } |
| s->misc_bits += get_bits_diff(s); |
| if (s->mv_dir & MV_DIR_FORWARD) { |
| for (i = 0; i < 2; i++) { |
| put_bits(&s->pb, 1, s->field_select[0][i]); |
| mpeg1_encode_motion(s, |
| s->mv[0][i][0] - s->last_mv[0][i][0], |
| s->f_code); |
| mpeg1_encode_motion(s, |
| s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1), |
| s->f_code); |
| s->last_mv[0][i][0] = s->mv[0][i][0]; |
| s->last_mv[0][i][1] = s->mv[0][i][1] * 2; |
| } |
| s->f_count++; |
| } |
| if (s->mv_dir & MV_DIR_BACKWARD) { |
| for (i = 0; i < 2; i++) { |
| put_bits(&s->pb, 1, s->field_select[1][i]); |
| mpeg1_encode_motion(s, |
| s->mv[1][i][0] - s->last_mv[1][i][0], |
| s->b_code); |
| mpeg1_encode_motion(s, |
| s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1), |
| s->b_code); |
| s->last_mv[1][i][0] = s->mv[1][i][0]; |
| s->last_mv[1][i][1] = s->mv[1][i][1] * 2; |
| } |
| s->b_count++; |
| } |
| } |
| s->mv_bits += get_bits_diff(s); |
| if (cbp) { |
| if (s->chroma_y_shift) { |
| 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_sbits(&s->pb, 2, cbp); |
| } |
| } |
| } |
| for (i = 0; i < mb_block_count; i++) |
| if (cbp & (1 << (mb_block_count - 1 - i))) |
| mpeg1_encode_block(s, block[i], i); |
| s->mb_skip_run = 0; |
| if (s->mb_intra) |
| s->i_tex_bits += get_bits_diff(s); |
| else |
| s->p_tex_bits += get_bits_diff(s); |
| } |
| } |
| |
| void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64], |
| int motion_x, int motion_y) |
| { |
| if (s->chroma_format == CHROMA_420) |
| mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6); |
| else |
| mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8); |
| } |
| |
| static av_cold void mpeg12_encode_init_static(void) |
| { |
| ff_rl_init(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]); |
| ff_rl_init(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]); |
| |
| for (int i = 0; i < 64; i++) { |
| mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i]; |
| mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i]; |
| } |
| |
| ff_mpeg1_init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len); |
| ff_mpeg1_init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len); |
| |
| /* build unified dc encoding tables */ |
| for (int i = -255; i < 256; i++) { |
| int adiff, index; |
| int bits, code; |
| int diff = i; |
| |
| adiff = FFABS(diff); |
| if (diff < 0) |
| diff--; |
| index = av_log2(2 * adiff); |
| |
| bits = ff_mpeg12_vlc_dc_lum_bits[index] + index; |
| code = (ff_mpeg12_vlc_dc_lum_code[index] << index) + |
| av_mod_uintp2(diff, index); |
| mpeg1_lum_dc_uni[i + 255] = bits + (code << 8); |
| |
| bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index; |
| code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) + |
| av_mod_uintp2(diff, index); |
| mpeg1_chr_dc_uni[i + 255] = bits + (code << 8); |
| } |
| |
| for (int f_code = 1; f_code <= MAX_FCODE; f_code++) |
| for (int mv = -MAX_DMV; mv <= MAX_DMV; mv++) { |
| int len; |
| |
| if (mv == 0) { |
| len = ff_mpeg12_mbMotionVectorTable[0][1]; |
| } else { |
| int val, bit_size, code; |
| |
| bit_size = f_code - 1; |
| |
| val = mv; |
| if (val < 0) |
| val = -val; |
| val--; |
| code = (val >> bit_size) + 1; |
| if (code < 17) |
| len = ff_mpeg12_mbMotionVectorTable[code][1] + |
| 1 + bit_size; |
| else |
| len = ff_mpeg12_mbMotionVectorTable[16][1] + |
| 2 + bit_size; |
| } |
| |
| mv_penalty[f_code][mv + MAX_DMV] = len; |
| } |
| |
| |
| for (int f_code = MAX_FCODE; f_code > 0; f_code--) |
| for (int mv = -(8 << f_code); mv < (8 << f_code); mv++) |
| fcode_tab[mv + MAX_MV] = f_code; |
| } |
| |
| av_cold void ff_mpeg1_encode_init(MpegEncContext *s) |
| { |
| static AVOnce init_static_once = AV_ONCE_INIT; |
| |
| ff_mpeg12_common_init(s); |
| |
| s->me.mv_penalty = mv_penalty; |
| s->fcode_tab = fcode_tab; |
| if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) { |
| s->min_qcoeff = -255; |
| s->max_qcoeff = 255; |
| } else { |
| s->min_qcoeff = -2047; |
| s->max_qcoeff = 2047; |
| } |
| if (s->intra_vlc_format) { |
| s->intra_ac_vlc_length = |
| s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len; |
| } else { |
| s->intra_ac_vlc_length = |
| s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len; |
| } |
| s->inter_ac_vlc_length = |
| s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len; |
| |
| ff_thread_once(&init_static_once, mpeg12_encode_init_static); |
| } |
| |
| #define OFFSET(x) offsetof(MpegEncContext, x) |
| #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
| #define COMMON_OPTS \ |
| { "gop_timecode", "MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.", \ |
| OFFSET(tc_opt_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE },\ |
| { "drop_frame_timecode", "Timecode is in drop frame format.", \ |
| OFFSET(drop_frame_timecode), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \ |
| { "scan_offset", "Reserve space for SVCD scan offset user data.", \ |
| OFFSET(scan_offset), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \ |
| { "timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", \ |
| OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, VE}, \ |
| |
| static const AVOption mpeg1_options[] = { |
| COMMON_OPTS |
| FF_MPV_COMMON_OPTS |
| { NULL }, |
| }; |
| |
| static const AVOption mpeg2_options[] = { |
| COMMON_OPTS |
| { "intra_vlc", "Use MPEG-2 intra VLC table.", |
| OFFSET(intra_vlc_format), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, |
| { "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, |
| { "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, |
| { "seq_disp_ext", "Write sequence_display_extension blocks.", OFFSET(seq_disp_ext), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "seq_disp_ext" }, |
| { "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, VE, "seq_disp_ext" }, |
| { "never", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 0, VE, "seq_disp_ext" }, |
| { "always", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 0, VE, "seq_disp_ext" }, |
| { "video_format", "Video_format in the sequence_display_extension indicating the source of the video.", OFFSET(video_format), AV_OPT_TYPE_INT, { .i64 = VIDEO_FORMAT_UNSPECIFIED }, 0, 7, VE, "video_format" }, |
| { "component", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_FORMAT_COMPONENT }, 0, 0, VE, "video_format" }, |
| { "pal", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_FORMAT_PAL }, 0, 0, VE, "video_format" }, |
| { "ntsc", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_FORMAT_NTSC }, 0, 0, VE, "video_format" }, |
| { "secam", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_FORMAT_SECAM }, 0, 0, VE, "video_format" }, |
| { "mac", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_FORMAT_MAC }, 0, 0, VE, "video_format" }, |
| { "unspecified", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VIDEO_FORMAT_UNSPECIFIED}, 0, 0, VE, "video_format" }, |
| #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "avctx.level" |
| { LEVEL("high", 4) }, |
| { LEVEL("high1440", 6) }, |
| { LEVEL("main", 8) }, |
| { LEVEL("low", 10) }, |
| #undef LEVEL |
| FF_MPV_COMMON_OPTS |
| FF_MPEG2_PROFILE_OPTS |
| { 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", |
| .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_MPEG1VIDEO, |
| .priv_data_size = sizeof(MpegEncContext), |
| .init = encode_init, |
| .encode2 = ff_mpv_encode_picture, |
| .close = ff_mpv_encode_end, |
| .supported_framerates = ff_mpeg12_frame_rate_tab + 1, |
| .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_NONE }, |
| .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS, |
| .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
| .priv_class = &mpeg1_class, |
| }; |
| |
| AVCodec ff_mpeg2video_encoder = { |
| .name = "mpeg2video", |
| .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_MPEG2VIDEO, |
| .priv_data_size = sizeof(MpegEncContext), |
| .init = encode_init, |
| .encode2 = ff_mpv_encode_picture, |
| .close = ff_mpv_encode_end, |
| .supported_framerates = ff_mpeg2_frame_rate_tab, |
| .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_YUV422P, |
| AV_PIX_FMT_NONE }, |
| .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS, |
| .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
| .priv_class = &mpeg2_class, |
| }; |
| #endif /* CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER */ |
