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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/avstring.h" |
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#include "libavutil/common.h" |
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#include "libavutil/opt.h" |
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#include "bsf.h" |
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#include "cbs.h" |
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#include "cbs_bsf.h" |
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#include "cbs_vp9.h" |
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typedef struct VP9MetadataContext { |
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CBSBSFContext common; |
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int color_space; |
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int color_range; |
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int color_warnings; |
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} VP9MetadataContext; |
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static int vp9_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, |
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CodedBitstreamFragment *frag) |
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{ |
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VP9MetadataContext *ctx = bsf->priv_data; |
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int i; |
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✓✓ |
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for (i = 0; i < frag->nb_units; i++) { |
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VP9RawFrame *frame = frag->units[i].content; |
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VP9RawFrameHeader *header = &frame->header; |
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int profile = (header->profile_high_bit << 1) + header->profile_low_bit; |
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✓✓ |
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if (header->frame_type == VP9_KEY_FRAME || |
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✗✓✗✗
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header->intra_only && profile > 0) { |
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✗✓ |
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if (ctx->color_space >= 0) { |
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if (!(profile & 1) && ctx->color_space == VP9_CS_RGB) { |
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if (!(ctx->color_warnings & 2)) { |
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av_log(bsf, AV_LOG_WARNING, "Warning: RGB " |
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"incompatible with profiles 0 and 2.\n"); |
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ctx->color_warnings |= 2; |
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} |
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} else |
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header->color_space = ctx->color_space; |
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} |
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✗✓ |
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if (ctx->color_range >= 0) |
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header->color_range = ctx->color_range; |
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✗✓ |
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if (header->color_space == VP9_CS_RGB) { |
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if (!(ctx->color_warnings & 1) && !header->color_range) { |
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av_log(bsf, AV_LOG_WARNING, "Warning: Color space RGB " |
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"implicitly sets color range to PC range.\n"); |
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ctx->color_warnings |= 1; |
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} |
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header->color_range = 1; |
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} |
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✓✗✗✓
✗✗ |
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} else if (!(ctx->color_warnings & 4) && header->intra_only && !profile && |
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ctx->color_space >= 0 && ctx->color_space != VP9_CS_BT_601) { |
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av_log(bsf, AV_LOG_WARNING, "Warning: Intra-only frames in " |
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"profile 0 are automatically BT.601.\n"); |
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ctx->color_warnings |= 4; |
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} |
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} |
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return 0; |
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} |
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static const CBSBSFType vp9_metadata_type = { |
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.codec_id = AV_CODEC_ID_VP9, |
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.fragment_name = "superframe", |
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.unit_name = "frame", |
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.update_fragment = &vp9_metadata_update_fragment, |
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}; |
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static int vp9_metadata_init(AVBSFContext *bsf) |
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{ |
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return ff_cbs_bsf_generic_init(bsf, &vp9_metadata_type); |
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} |
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#define OFFSET(x) offsetof(VP9MetadataContext, x) |
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#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM) |
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static const AVOption vp9_metadata_options[] = { |
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{ "color_space", "Set colour space (section 7.2.2)", |
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OFFSET(color_space), AV_OPT_TYPE_INT, |
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{ .i64 = -1 }, -1, VP9_CS_RGB, FLAGS, "cs" }, |
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{ "unknown", "Unknown/unspecified", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = VP9_CS_UNKNOWN }, .flags = FLAGS, .unit = "cs" }, |
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{ "bt601", "ITU-R BT.601-7", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = VP9_CS_BT_601 }, .flags = FLAGS, .unit = "cs" }, |
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{ "bt709", "ITU-R BT.709-6", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = VP9_CS_BT_709 }, .flags = FLAGS, .unit = "cs" }, |
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{ "smpte170", "SMPTE-170", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = VP9_CS_SMPTE_170 }, .flags = FLAGS, .unit = "cs" }, |
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{ "smpte240", "SMPTE-240", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = VP9_CS_SMPTE_240 }, .flags = FLAGS, .unit = "cs" }, |
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{ "bt2020", "ITU-R BT.2020-2", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = VP9_CS_BT_2020 }, .flags = FLAGS, .unit = "cs" }, |
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{ "rgb", "sRGB / IEC 61966-2-1", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = VP9_CS_RGB }, .flags = FLAGS, .unit = "cs" }, |
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{ "color_range", "Set colour range (section 7.2.2)", |
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OFFSET(color_range), AV_OPT_TYPE_INT, |
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{ .i64 = -1 }, -1, 1, FLAGS, "cr" }, |
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{ "tv", "TV (limited) range", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = 0 }, .flags = FLAGS, .unit = "cr" }, |
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{ "pc", "PC (full) range", 0, AV_OPT_TYPE_CONST, |
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{ .i64 = 1 }, .flags = FLAGS, .unit = "cr" }, |
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{ NULL } |
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}; |
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static const AVClass vp9_metadata_class = { |
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.class_name = "vp9_metadata_bsf", |
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.item_name = av_default_item_name, |
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.option = vp9_metadata_options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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static const enum AVCodecID vp9_metadata_codec_ids[] = { |
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AV_CODEC_ID_VP9, AV_CODEC_ID_NONE, |
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}; |
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const AVBitStreamFilter ff_vp9_metadata_bsf = { |
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.name = "vp9_metadata", |
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.priv_data_size = sizeof(VP9MetadataContext), |
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.priv_class = &vp9_metadata_class, |
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.init = &vp9_metadata_init, |
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.close = &ff_cbs_bsf_generic_close, |
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.filter = &ff_cbs_bsf_generic_filter, |
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.codec_ids = vp9_metadata_codec_ids, |
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}; |