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203 lines
6.8 KiB
203 lines
6.8 KiB
/* |
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* Dolby Vision RPU encoder |
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* |
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* Copyright (C) 2024 Niklas Haas |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/avassert.h" |
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#include "libavutil/mem.h" |
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#include "avcodec.h" |
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#include "dovi_rpu.h" |
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static struct { |
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uint64_t pps; // maximum pixels per second |
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int width; // maximum width |
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int main; // maximum bitrate in main tier |
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int high; // maximum bitrate in high tier |
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} dv_levels[] = { |
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[1] = {1280*720*24, 1280, 20, 50}, |
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[2] = {1280*720*30, 1280, 20, 50}, |
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[3] = {1920*1080*24, 1920, 20, 70}, |
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[4] = {1920*1080*30, 2560, 20, 70}, |
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[5] = {1920*1080*60, 3840, 20, 70}, |
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[6] = {3840*2160*24, 3840, 25, 130}, |
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[7] = {3840*2160*30, 3840, 25, 130}, |
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[8] = {3840*2160*48, 3840, 40, 130}, |
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[9] = {3840*2160*60, 3840, 40, 130}, |
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[10] = {3840*2160*120, 3840, 60, 240}, |
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[11] = {3840*2160*120, 7680, 60, 240}, |
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[12] = {7680*4320*60, 7680, 120, 450}, |
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[13] = {7680*4320*120u, 7680, 240, 800}, |
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}; |
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int ff_dovi_configure(DOVIContext *s, AVCodecContext *avctx) |
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{ |
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AVDOVIDecoderConfigurationRecord *cfg; |
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const AVDOVIRpuDataHeader *hdr = NULL; |
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const AVFrameSideData *sd; |
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int dv_profile, dv_level, bl_compat_id; |
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size_t cfg_size; |
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uint64_t pps; |
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if (!s->enable) |
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goto skip; |
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sd = av_frame_side_data_get(avctx->decoded_side_data, |
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avctx->nb_decoded_side_data, AV_FRAME_DATA_DOVI_METADATA); |
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if (sd) |
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hdr = av_dovi_get_header((const AVDOVIMetadata *) sd->data); |
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if (s->enable == FF_DOVI_AUTOMATIC && !hdr) |
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goto skip; |
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switch (avctx->codec_id) { |
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case AV_CODEC_ID_AV1: dv_profile = 10; break; |
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case AV_CODEC_ID_H264: dv_profile = 9; break; |
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case AV_CODEC_ID_HEVC: dv_profile = hdr ? ff_dovi_guess_profile_hevc(hdr) : 8; break; |
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default: |
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/* No other encoder should be calling this! */ |
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av_assert0(0); |
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return AVERROR_BUG; |
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} |
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if (avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) { |
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if (dv_profile == 9) { |
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if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) |
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dv_profile = 0; |
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} else { |
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if (avctx->pix_fmt != AV_PIX_FMT_YUV420P10) |
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dv_profile = 0; |
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} |
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} |
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switch (dv_profile) { |
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case 0: /* None */ |
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bl_compat_id = -1; |
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break; |
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case 4: /* HEVC with enhancement layer */ |
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case 7: |
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if (s->enable > 0) { |
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av_log(s->logctx, AV_LOG_ERROR, "Coding of Dolby Vision enhancement " |
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"layers is currently unsupported."); |
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return AVERROR_PATCHWELCOME; |
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} else { |
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goto skip; |
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} |
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case 5: /* HEVC with proprietary IPTPQc2 */ |
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bl_compat_id = 0; |
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break; |
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case 10: |
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/* FIXME: check for proper H.273 tags once those are added */ |
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if (hdr && hdr->bl_video_full_range_flag) { |
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/* AV1 with proprietary IPTPQc2 */ |
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bl_compat_id = 0; |
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break; |
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} |
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/* fall through */ |
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case 8: /* HEVC (or AV1) with BL compatibility */ |
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if (avctx->colorspace == AVCOL_SPC_BT2020_NCL && |
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avctx->color_primaries == AVCOL_PRI_BT2020 && |
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avctx->color_trc == AVCOL_TRC_SMPTE2084) { |
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bl_compat_id = 1; |
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} else if (avctx->colorspace == AVCOL_SPC_BT2020_NCL && |
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avctx->color_primaries == AVCOL_PRI_BT2020 && |
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avctx->color_trc == AVCOL_TRC_ARIB_STD_B67) { |
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bl_compat_id = 4; |
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} else if (avctx->colorspace == AVCOL_SPC_BT709 && |
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avctx->color_primaries == AVCOL_PRI_BT709 && |
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avctx->color_trc == AVCOL_TRC_BT709) { |
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bl_compat_id = 2; |
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} else { |
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/* Not a valid colorspace combination */ |
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bl_compat_id = -1; |
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} |
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} |
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if (!dv_profile || bl_compat_id < 0) { |
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if (s->enable > 0) { |
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av_log(s->logctx, AV_LOG_ERROR, "Dolby Vision enabled, but could " |
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"not determine profile and compaatibility mode. Double-check " |
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"colorspace and format settings for compatibility?\n"); |
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return AVERROR(EINVAL); |
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} |
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goto skip; |
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} |
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pps = avctx->width * avctx->height; |
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if (avctx->framerate.num) { |
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pps = pps * avctx->framerate.num / avctx->framerate.den; |
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} else { |
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pps *= 25; /* sanity fallback */ |
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} |
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dv_level = 0; |
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for (int i = 1; i < FF_ARRAY_ELEMS(dv_levels); i++) { |
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if (pps > dv_levels[i].pps) |
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continue; |
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if (avctx->width > dv_levels[i].width) |
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continue; |
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/* In theory, we should also test the bitrate when known, and |
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* distinguish between main and high tier. In practice, just ignore |
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* the bitrate constraints and hope they work out. This would ideally |
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* be handled by either the encoder or muxer directly. */ |
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dv_level = i; |
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break; |
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} |
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if (!dv_level) { |
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if (avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) { |
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av_log(s->logctx, AV_LOG_ERROR, "Coded PPS (%"PRIu64") and width (%d) " |
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"exceed Dolby Vision limitations\n", pps, avctx->width); |
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return AVERROR(EINVAL); |
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} else { |
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av_log(s->logctx, AV_LOG_WARNING, "Coded PPS (%"PRIu64") and width (%d) " |
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"exceed Dolby Vision limitations. Ignoring, resulting file " |
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"may be non-conforming.\n", pps, avctx->width); |
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dv_level = FF_ARRAY_ELEMS(dv_levels) - 1; |
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} |
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} |
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cfg = av_dovi_alloc(&cfg_size); |
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if (!cfg) |
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return AVERROR(ENOMEM); |
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if (!av_packet_side_data_add(&avctx->coded_side_data, &avctx->nb_coded_side_data, |
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AV_PKT_DATA_DOVI_CONF, cfg, cfg_size, 0)) { |
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av_free(cfg); |
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return AVERROR(ENOMEM); |
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} |
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cfg->dv_version_major = 1; |
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cfg->dv_version_minor = 0; |
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cfg->dv_profile = dv_profile; |
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cfg->dv_level = dv_level; |
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cfg->rpu_present_flag = 1; |
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cfg->el_present_flag = 0; |
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cfg->bl_present_flag = 1; |
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cfg->dv_bl_signal_compatibility_id = bl_compat_id; |
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s->cfg = *cfg; |
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return 0; |
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skip: |
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s->cfg = (AVDOVIDecoderConfigurationRecord) {0}; |
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return 0; |
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}
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