/* * Dolby Vision RPU encoder * * Copyright (C) 2024 Niklas Haas * * 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 */ #include "libavutil/avassert.h" #include "libavutil/crc.h" #include "libavutil/mem.h" #include "avcodec.h" #include "dovi_rpu.h" #include "itut35.h" #include "put_bits.h" #include "put_golomb.h" #include "refstruct.h" static struct { uint64_t pps; // maximum pixels per second int width; // maximum width int main; // maximum bitrate in main tier int high; // maximum bitrate in high tier } dv_levels[] = { [1] = {1280*720*24, 1280, 20, 50}, [2] = {1280*720*30, 1280, 20, 50}, [3] = {1920*1080*24, 1920, 20, 70}, [4] = {1920*1080*30, 2560, 20, 70}, [5] = {1920*1080*60, 3840, 20, 70}, [6] = {3840*2160*24, 3840, 25, 130}, [7] = {3840*2160*30, 3840, 25, 130}, [8] = {3840*2160*48, 3840, 40, 130}, [9] = {3840*2160*60, 3840, 40, 130}, [10] = {3840*2160*120, 3840, 60, 240}, [11] = {3840*2160*120, 7680, 60, 240}, [12] = {7680*4320*60, 7680, 120, 450}, [13] = {7680*4320*120u, 7680, 240, 800}, }; int ff_dovi_configure(DOVIContext *s, AVCodecContext *avctx) { AVDOVIDecoderConfigurationRecord *cfg; const AVDOVIRpuDataHeader *hdr = NULL; const AVFrameSideData *sd; int dv_profile, dv_level, bl_compat_id = -1; size_t cfg_size; uint64_t pps; if (!s->enable) goto skip; sd = av_frame_side_data_get(avctx->decoded_side_data, avctx->nb_decoded_side_data, AV_FRAME_DATA_DOVI_METADATA); if (sd) hdr = av_dovi_get_header((const AVDOVIMetadata *) sd->data); if (s->enable == FF_DOVI_AUTOMATIC && !hdr) goto skip; switch (avctx->codec_id) { case AV_CODEC_ID_AV1: dv_profile = 10; break; case AV_CODEC_ID_H264: dv_profile = 9; break; case AV_CODEC_ID_HEVC: dv_profile = hdr ? ff_dovi_guess_profile_hevc(hdr) : 8; break; default: /* No other encoder should be calling this! */ av_assert0(0); return AVERROR_BUG; } if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) { if (dv_profile == 9) { if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) dv_profile = 0; } else { if (avctx->pix_fmt != AV_PIX_FMT_YUV420P10) dv_profile = 0; } } switch (dv_profile) { case 4: /* HEVC with enhancement layer */ case 7: if (s->enable > 0) { av_log(s->logctx, AV_LOG_ERROR, "Coding of Dolby Vision enhancement " "layers is currently unsupported."); return AVERROR_PATCHWELCOME; } else { goto skip; } case 5: /* HEVC with proprietary IPTPQc2 */ bl_compat_id = 0; break; case 10: /* FIXME: check for proper H.273 tags once those are added */ if (hdr && hdr->bl_video_full_range_flag) { /* AV1 with proprietary IPTPQc2 */ bl_compat_id = 0; break; } /* fall through */ case 8: /* HEVC (or AV1) with BL compatibility */ if (avctx->colorspace == AVCOL_SPC_BT2020_NCL && avctx->color_primaries == AVCOL_PRI_BT2020 && avctx->color_trc == AVCOL_TRC_SMPTE2084) { bl_compat_id = 1; } else if (avctx->colorspace == AVCOL_SPC_BT2020_NCL && avctx->color_primaries == AVCOL_PRI_BT2020 && avctx->color_trc == AVCOL_TRC_ARIB_STD_B67) { bl_compat_id = 4; } else if (avctx->colorspace == AVCOL_SPC_BT709 && avctx->color_primaries == AVCOL_PRI_BT709 && avctx->color_trc == AVCOL_TRC_BT709) { bl_compat_id = 2; } } if (!dv_profile || bl_compat_id < 0) { if (s->enable > 0) { av_log(s->logctx, AV_LOG_ERROR, "Dolby Vision enabled, but could " "not determine profile and compatibility mode. Double-check " "colorspace and format settings for compatibility?\n"); return AVERROR(EINVAL); } goto skip; } pps = avctx->width * avctx->height; if (avctx->framerate.num) { pps = pps * avctx->framerate.num / avctx->framerate.den; } else { pps *= 25; /* sanity fallback */ } dv_level = 0; for (int i = 1; i < FF_ARRAY_ELEMS(dv_levels); i++) { if (pps > dv_levels[i].pps) continue; if (avctx->width > dv_levels[i].width) continue; /* In theory, we should also test the bitrate when known, and * distinguish between main and high tier. In practice, just ignore * the bitrate constraints and hope they work out. This would ideally * be handled by either the encoder or muxer directly. */ dv_level = i; break; } if (!dv_level) { if (avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) { av_log(s->logctx, AV_LOG_ERROR, "Coded PPS (%"PRIu64") and width (%d) " "exceed Dolby Vision limitations\n", pps, avctx->width); return AVERROR(EINVAL); } else { av_log(s->logctx, AV_LOG_WARNING, "Coded PPS (%"PRIu64") and width (%d) " "exceed Dolby Vision limitations. Ignoring, resulting file " "may be non-conforming.\n", pps, avctx->width); dv_level = FF_ARRAY_ELEMS(dv_levels) - 1; } } cfg = av_dovi_alloc(&cfg_size); if (!cfg) return AVERROR(ENOMEM); if (!av_packet_side_data_add(&avctx->coded_side_data, &avctx->nb_coded_side_data, AV_PKT_DATA_DOVI_CONF, cfg, cfg_size, 0)) { av_free(cfg); return AVERROR(ENOMEM); } cfg->dv_version_major = 1; cfg->dv_version_minor = 0; cfg->dv_profile = dv_profile; cfg->dv_level = dv_level; cfg->rpu_present_flag = 1; cfg->el_present_flag = 0; cfg->bl_present_flag = 1; cfg->dv_bl_signal_compatibility_id = bl_compat_id; s->cfg = *cfg; return 0; skip: s->cfg = (AVDOVIDecoderConfigurationRecord) {0}; return 0; } static inline void put_ue_coef(PutBitContext *pb, const AVDOVIRpuDataHeader *hdr, uint64_t coef) { union { uint32_t u32; float f32; } fpart; switch (hdr->coef_data_type) { case RPU_COEFF_FIXED: set_ue_golomb(pb, coef >> hdr->coef_log2_denom); put_bits64(pb, hdr->coef_log2_denom, coef & ((1LL << hdr->coef_log2_denom) - 1)); break; case RPU_COEFF_FLOAT: fpart.f32 = coef / (float) (1LL << hdr->coef_log2_denom); put_bits64(pb, hdr->coef_log2_denom, fpart.u32); break; } } static inline void put_se_coef(PutBitContext *pb, const AVDOVIRpuDataHeader *hdr, uint64_t coef) { union { uint32_t u32; float f32; } fpart; switch (hdr->coef_data_type) { case RPU_COEFF_FIXED: set_se_golomb(pb, coef >> hdr->coef_log2_denom); put_bits64(pb, hdr->coef_log2_denom, coef & ((1LL << hdr->coef_log2_denom) - 1)); break; case RPU_COEFF_FLOAT: fpart.f32 = coef / (float) (1LL << hdr->coef_log2_denom); put_bits64(pb, hdr->coef_log2_denom, fpart.u32); break; } } static int av_q2den(AVRational q, int den) { if (!q.den || q.den == den) return q.num; q = av_mul_q(q, av_make_q(den, 1)); return (q.num + (q.den >> 1)) / q.den; } static void generate_ext_v1(PutBitContext *pb, const AVDOVIDmData *dm) { int ext_block_length, start_pos, pad_bits; switch (dm->level) { case 1: ext_block_length = 5; break; case 2: ext_block_length = 11; break; case 4: ext_block_length = 3; break; case 5: ext_block_length = 7; break; case 6: ext_block_length = 8; break; case 255: ext_block_length = 6; break; default: return; } set_ue_golomb(pb, ext_block_length); put_bits(pb, 8, dm->level); start_pos = put_bits_count(pb); switch (dm->level) { case 1: put_bits(pb, 12, dm->l1.min_pq); put_bits(pb, 12, dm->l1.max_pq); put_bits(pb, 12, dm->l1.avg_pq); break; case 2: put_bits(pb, 12, dm->l2.target_max_pq); put_bits(pb, 12, dm->l2.trim_slope); put_bits(pb, 12, dm->l2.trim_offset); put_bits(pb, 12, dm->l2.trim_power); put_bits(pb, 12, dm->l2.trim_chroma_weight); put_bits(pb, 12, dm->l2.trim_saturation_gain); put_sbits(pb, 13, dm->l2.ms_weight); break; case 4: put_bits(pb, 12, dm->l4.anchor_pq); put_bits(pb, 12, dm->l4.anchor_power); break; case 5: put_bits(pb, 13, dm->l5.left_offset); put_bits(pb, 13, dm->l5.right_offset); put_bits(pb, 13, dm->l5.top_offset); put_bits(pb, 13, dm->l5.bottom_offset); break; case 6: put_bits(pb, 16, dm->l6.max_luminance); put_bits(pb, 16, dm->l6.min_luminance); put_bits(pb, 16, dm->l6.max_cll); put_bits(pb, 16, dm->l6.max_fall); break; case 255: put_bits(pb, 8, dm->l255.dm_run_mode); put_bits(pb, 8, dm->l255.dm_run_version); for (int i = 0; i < 4; i++) put_bits(pb, 8, dm->l255.dm_debug[i]); break; } pad_bits = ext_block_length * 8 - (put_bits_count(pb) - start_pos); av_assert1(pad_bits >= 0); put_bits(pb, pad_bits, 0); } static void put_cie_xy(PutBitContext *pb, AVCIExy xy) { const int denom = 32767; put_sbits(pb, 16, av_q2den(xy.x, denom)); put_sbits(pb, 16, av_q2den(xy.y, denom)); } #define ANY6(arr) (arr[0] || arr[1] || arr[2] || arr[3] || arr[4] || arr[5]) #define ANY_XY(xy) (xy.x.num || xy.y.num) #define ANY_CSP(csp) (ANY_XY(csp.prim.r) || ANY_XY(csp.prim.g) || \ ANY_XY(csp.prim.b) || ANY_XY(csp.wp)) static void generate_ext_v2(PutBitContext *pb, const AVDOVIDmData *dm) { int ext_block_length, start_pos, pad_bits; switch (dm->level) { case 3: ext_block_length = 5; break; case 8: if (ANY6(dm->l8.hue_vector_field)) { ext_block_length = 25; } else if (ANY6(dm->l8.saturation_vector_field)) { ext_block_length = 19; } else if (dm->l8.clip_trim) { ext_block_length = 13; } else if (dm->l8.target_mid_contrast) { ext_block_length = 12; } else { ext_block_length = 10; } break; case 9: if (ANY_CSP(dm->l9.source_display_primaries)) { ext_block_length = 17; } else { ext_block_length = 1; } break; case 10: if (ANY_CSP(dm->l10.target_display_primaries)) { ext_block_length = 21; } else { ext_block_length = 5; } break; case 11: ext_block_length = 4; break; case 254: ext_block_length = 2; break; default: return; } set_ue_golomb(pb, ext_block_length); put_bits(pb, 8, dm->level); start_pos = put_bits_count(pb); switch (dm->level) { case 3: put_bits(pb, 12, dm->l3.min_pq_offset); put_bits(pb, 12, dm->l3.max_pq_offset); put_bits(pb, 12, dm->l3.avg_pq_offset); break; case 8: put_bits(pb, 8, dm->l8.target_display_index); put_bits(pb, 12, dm->l8.trim_slope); put_bits(pb, 12, dm->l8.trim_offset); put_bits(pb, 12, dm->l8.trim_power); put_bits(pb, 12, dm->l8.trim_chroma_weight); put_bits(pb, 12, dm->l8.trim_saturation_gain); put_bits(pb, 12, dm->l8.ms_weight); if (ext_block_length < 12) break; put_bits(pb, 12, dm->l8.target_mid_contrast); if (ext_block_length < 13) break; put_bits(pb, 12, dm->l8.clip_trim); if (ext_block_length < 19) break; for (int i = 0; i < 6; i++) put_bits(pb, 8, dm->l8.saturation_vector_field[i]); if (ext_block_length < 25) break; for (int i = 0; i < 6; i++) put_bits(pb, 8, dm->l8.hue_vector_field[i]); break; case 9: put_bits(pb, 8, dm->l9.source_primary_index); if (ext_block_length < 17) break; put_cie_xy(pb, dm->l9.source_display_primaries.prim.r); put_cie_xy(pb, dm->l9.source_display_primaries.prim.g); put_cie_xy(pb, dm->l9.source_display_primaries.prim.b); put_cie_xy(pb, dm->l9.source_display_primaries.wp); break; case 10: put_bits(pb, 8, dm->l10.target_display_index); put_bits(pb, 12, dm->l10.target_max_pq); put_bits(pb, 12, dm->l10.target_min_pq); put_bits(pb, 8, dm->l10.target_primary_index); if (ext_block_length < 21) break; put_cie_xy(pb, dm->l10.target_display_primaries.prim.r); put_cie_xy(pb, dm->l10.target_display_primaries.prim.g); put_cie_xy(pb, dm->l10.target_display_primaries.prim.b); put_cie_xy(pb, dm->l10.target_display_primaries.wp); break; case 11: put_bits(pb, 8, dm->l11.content_type); put_bits(pb, 4, dm->l11.whitepoint); put_bits(pb, 1, dm->l11.reference_mode_flag); put_bits(pb, 3, 0); /* reserved */ put_bits(pb, 2, dm->l11.sharpness); put_bits(pb, 2, dm->l11.noise_reduction); put_bits(pb, 2, dm->l11.mpeg_noise_reduction); put_bits(pb, 2, dm->l11.frame_rate_conversion); put_bits(pb, 2, dm->l11.brightness); put_bits(pb, 2, dm->l11.color); break; case 254: put_bits(pb, 8, dm->l254.dm_mode); put_bits(pb, 8, dm->l254.dm_version_index); break; } pad_bits = ext_block_length * 8 - (put_bits_count(pb) - start_pos); av_assert1(pad_bits >= 0); put_bits(pb, pad_bits, 0); } int ff_dovi_rpu_generate(DOVIContext *s, const AVDOVIMetadata *metadata, uint8_t **out_rpu, int *out_size) { PutBitContext *pb = &(PutBitContext){0}; const AVDOVIRpuDataHeader *hdr; const AVDOVIDataMapping *mapping; const AVDOVIColorMetadata *color; int vdr_dm_metadata_present, vdr_rpu_id, use_prev_vdr_rpu, profile, buffer_size, rpu_size, pad, zero_run; int num_ext_blocks_v1, num_ext_blocks_v2; uint32_t crc; uint8_t *dst; if (!metadata) { *out_rpu = NULL; *out_size = 0; return 0; } hdr = av_dovi_get_header(metadata); mapping = av_dovi_get_mapping(metadata); color = av_dovi_get_color(metadata); av_assert0(s->cfg.dv_profile); if (hdr->rpu_type != 2) { av_log(s->logctx, AV_LOG_ERROR, "Unhandled RPU type %"PRIu8"\n", hdr->rpu_type); return AVERROR_INVALIDDATA; } vdr_rpu_id = -1; for (int i = 0; i <= DOVI_MAX_DM_ID; i++) { if (s->vdr[i] && !memcmp(s->vdr[i], mapping, sizeof(*mapping))) { vdr_rpu_id = i; break; } else if (vdr_rpu_id < 0 && (!s->vdr[i] || i == DOVI_MAX_DM_ID)) { vdr_rpu_id = i; } } if (!s->vdr[vdr_rpu_id]) { s->vdr[vdr_rpu_id] = ff_refstruct_allocz(sizeof(AVDOVIDataMapping)); if (!s->vdr[vdr_rpu_id]) return AVERROR(ENOMEM); } num_ext_blocks_v1 = num_ext_blocks_v2 = 0; for (int i = 0; i < metadata->num_ext_blocks; i++) { const AVDOVIDmData *dm = av_dovi_get_ext(metadata, i); switch (dm->level) { case 1: case 2: case 4: case 5: case 6: case 255: num_ext_blocks_v1++; break; case 3: case 8: case 9: case 10: case 11: case 254: num_ext_blocks_v2++; break; default: av_log(s->logctx, AV_LOG_ERROR, "Invalid ext block level %d\n", dm->level); return AVERROR_INVALIDDATA; } } vdr_dm_metadata_present = memcmp(color, &ff_dovi_color_default, sizeof(*color)); use_prev_vdr_rpu = !memcmp(s->vdr[vdr_rpu_id], mapping, sizeof(*mapping)); if (num_ext_blocks_v1 || num_ext_blocks_v2) vdr_dm_metadata_present = 1; if (vdr_dm_metadata_present && !s->dm) { s->dm = ff_refstruct_allocz(sizeof(AVDOVIColorMetadata)); if (!s->dm) return AVERROR(ENOMEM); } buffer_size = 12 /* vdr seq info */ + 5 /* CRC32 + terminator */; buffer_size += num_ext_blocks_v1 * 13; buffer_size += num_ext_blocks_v2 * 28; if (!use_prev_vdr_rpu) { buffer_size += 160; for (int c = 0; c < 3; c++) { for (int i = 0; i < mapping->curves[c].num_pivots - 1; i++) { switch (mapping->curves[c].mapping_idc[i]) { case AV_DOVI_MAPPING_POLYNOMIAL: buffer_size += 26; break; case AV_DOVI_MAPPING_MMR: buffer_size += 177; break; } } } } if (vdr_dm_metadata_present) buffer_size += 67; av_fast_padded_malloc(&s->rpu_buf, &s->rpu_buf_sz, buffer_size); if (!s->rpu_buf) return AVERROR(ENOMEM); init_put_bits(pb, s->rpu_buf, s->rpu_buf_sz); /* RPU header */ put_bits(pb, 6, hdr->rpu_type); put_bits(pb, 11, hdr->rpu_format); put_bits(pb, 4, hdr->vdr_rpu_profile); put_bits(pb, 4, hdr->vdr_rpu_level); put_bits(pb, 1, 1); /* vdr_seq_info_present */ put_bits(pb, 1, hdr->chroma_resampling_explicit_filter_flag); put_bits(pb, 2, hdr->coef_data_type); if (hdr->coef_data_type == RPU_COEFF_FIXED) set_ue_golomb(pb, hdr->coef_log2_denom); put_bits(pb, 2, hdr->vdr_rpu_normalized_idc); put_bits(pb, 1, hdr->bl_video_full_range_flag); if ((hdr->rpu_format & 0x700) == 0) { int ext_mapping_idc = (hdr->ext_mapping_idc_5_7 << 5) | hdr->ext_mapping_idc_0_4; set_ue_golomb(pb, hdr->bl_bit_depth - 8); set_ue_golomb(pb, (ext_mapping_idc << 8) | (hdr->el_bit_depth - 8)); set_ue_golomb(pb, hdr->vdr_bit_depth - 8); put_bits(pb, 1, hdr->spatial_resampling_filter_flag); put_bits(pb, 3, 0); /* reserved_zero_3bits */ put_bits(pb, 1, hdr->el_spatial_resampling_filter_flag); put_bits(pb, 1, hdr->disable_residual_flag); } s->header = *hdr; put_bits(pb, 1, vdr_dm_metadata_present); put_bits(pb, 1, use_prev_vdr_rpu); set_ue_golomb(pb, vdr_rpu_id); s->mapping = s->vdr[vdr_rpu_id]; profile = s->cfg.dv_profile ? s->cfg.dv_profile : ff_dovi_guess_profile_hevc(hdr); if (!use_prev_vdr_rpu) { set_ue_golomb(pb, mapping->mapping_color_space); set_ue_golomb(pb, mapping->mapping_chroma_format_idc); for (int c = 0; c < 3; c++) { const AVDOVIReshapingCurve *curve = &mapping->curves[c]; int prev = 0; set_ue_golomb(pb, curve->num_pivots - 2); for (int i = 0; i < curve->num_pivots; i++) { put_bits(pb, hdr->bl_bit_depth, curve->pivots[i] - prev); prev = curve->pivots[i]; } } if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) { put_bits(pb, 3, mapping->nlq_method_idc); put_bits(pb, hdr->bl_bit_depth, mapping->nlq_pivots[0]); put_bits(pb, hdr->bl_bit_depth, mapping->nlq_pivots[1] - mapping->nlq_pivots[0]); } set_ue_golomb(pb, mapping->num_x_partitions - 1); set_ue_golomb(pb, mapping->num_y_partitions - 1); for (int c = 0; c < 3; c++) { const AVDOVIReshapingCurve *curve = &mapping->curves[c]; for (int i = 0; i < curve->num_pivots - 1; i++) { set_ue_golomb(pb, curve->mapping_idc[i]); switch (curve->mapping_idc[i]) { case AV_DOVI_MAPPING_POLYNOMIAL: { set_ue_golomb(pb, curve->poly_order[i] - 1); if (curve->poly_order[i] == 1) put_bits(pb, 1, 0); /* linear_interp_flag */ for (int k = 0; k <= curve->poly_order[i]; k++) put_se_coef(pb, hdr, curve->poly_coef[i][k]); break; } case AV_DOVI_MAPPING_MMR: { put_bits(pb, 2, curve->mmr_order[i] - 1); put_se_coef(pb, hdr, curve->mmr_constant[i]); for (int j = 0; j < curve->mmr_order[i]; j++) { for (int k = 0; k < 7; k++) put_se_coef(pb, hdr, curve->mmr_coef[i][j][k]); } break; } } } } if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) { for (int c = 0; c < 3; c++) { const AVDOVINLQParams *nlq = &mapping->nlq[c]; put_bits(pb, hdr->el_bit_depth, nlq->nlq_offset); put_ue_coef(pb, hdr, nlq->vdr_in_max); switch (mapping->nlq_method_idc) { case AV_DOVI_NLQ_LINEAR_DZ: put_ue_coef(pb, hdr, nlq->linear_deadzone_slope); put_ue_coef(pb, hdr, nlq->linear_deadzone_threshold); break; } } } memcpy(s->vdr[vdr_rpu_id], mapping, sizeof(*mapping)); } if (vdr_dm_metadata_present) { const int denom = profile == 4 ? (1 << 30) : (1 << 28); set_ue_golomb(pb, color->dm_metadata_id); /* affected_dm_id */ set_ue_golomb(pb, color->dm_metadata_id); /* current_dm_id */ set_ue_golomb(pb, color->scene_refresh_flag); for (int i = 0; i < 9; i++) put_sbits(pb, 16, av_q2den(color->ycc_to_rgb_matrix[i], 1 << 13)); for (int i = 0; i < 3; i++) put_bits32(pb, av_q2den(color->ycc_to_rgb_offset[i], denom)); for (int i = 0; i < 9; i++) put_sbits(pb, 16, av_q2den(color->rgb_to_lms_matrix[i], 1 << 14)); put_bits(pb, 16, color->signal_eotf); put_bits(pb, 16, color->signal_eotf_param0); put_bits(pb, 16, color->signal_eotf_param1); put_bits32(pb, color->signal_eotf_param2); put_bits(pb, 5, color->signal_bit_depth); put_bits(pb, 2, color->signal_color_space); put_bits(pb, 2, color->signal_chroma_format); put_bits(pb, 2, color->signal_full_range_flag); put_bits(pb, 12, color->source_min_pq); put_bits(pb, 12, color->source_max_pq); put_bits(pb, 10, color->source_diagonal); memcpy(s->dm, color, sizeof(*color)); s->color = s->dm; /* Extension blocks */ set_ue_golomb(pb, num_ext_blocks_v1); align_put_bits(pb); for (int i = 0; i < metadata->num_ext_blocks; i++) generate_ext_v1(pb, av_dovi_get_ext(metadata, i)); if (num_ext_blocks_v2) { set_ue_golomb(pb, num_ext_blocks_v2); align_put_bits(pb); for (int i = 0; i < metadata->num_ext_blocks; i++) generate_ext_v2(pb, av_dovi_get_ext(metadata, i)); } } else { s->color = &ff_dovi_color_default; s->num_ext_blocks = 0; } flush_put_bits(pb); crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1, s->rpu_buf, put_bytes_output(pb))); put_bits32(pb, crc); put_bits(pb, 8, 0x80); /* terminator */ flush_put_bits(pb); rpu_size = put_bytes_output(pb); switch (s->cfg.dv_profile) { case 10: /* AV1 uses T.35 OBU with EMDF header */ *out_rpu = av_malloc(rpu_size + 15); if (!*out_rpu) return AVERROR(ENOMEM); init_put_bits(pb, *out_rpu, rpu_size + 15); put_bits(pb, 8, ITU_T_T35_COUNTRY_CODE_US); put_bits(pb, 16, ITU_T_T35_PROVIDER_CODE_DOLBY); put_bits32(pb, 0x800); /* provider_oriented_code */ put_bits(pb, 27, 0x01be6841u); /* fixed EMDF header, see above */ if (rpu_size > 0xFF) { av_assert2(rpu_size <= 0x10000); put_bits(pb, 8, (rpu_size >> 8) - 1); put_bits(pb, 1, 1); /* read_more */ put_bits(pb, 8, rpu_size & 0xFF); put_bits(pb, 1, 0); } else { put_bits(pb, 8, rpu_size); put_bits(pb, 1, 0); } ff_copy_bits(pb, s->rpu_buf, rpu_size * 8); put_bits(pb, 17, 0x400); /* emdf payload id + emdf_protection */ pad = pb->bit_left & 7; put_bits(pb, pad, (1 << pad) - 1); /* pad to next byte with 1 bits */ flush_put_bits(pb); *out_size = put_bytes_output(pb); return 0; case 5: case 8: *out_rpu = dst = av_malloc(1 + rpu_size * 3 / 2); /* worst case */ if (!*out_rpu) return AVERROR(ENOMEM); *dst++ = 25; /* NAL prefix */ zero_run = 0; for (int i = 0; i < rpu_size; i++) { if (zero_run < 2) { if (s->rpu_buf[i] == 0) { zero_run++; } else { zero_run = 0; } } else { if ((s->rpu_buf[i] & ~3) == 0) { /* emulation prevention */ *dst++ = 3; } zero_run = s->rpu_buf[i] == 0; } *dst++ = s->rpu_buf[i]; } *out_size = dst - *out_rpu; return 0; default: /* Should be unreachable */ av_assert0(0); return AVERROR_BUG; } }