Martin Vignali
7 years ago
parent
936d18fb42
commit
0aba92d42d
4 changed files with 240 additions and 0 deletions
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/*
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* Prores Metadata bitstream filter |
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* Copyright (c) 2018 Jokyo Images |
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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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/**
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* @file |
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* Prores Metadata bitstream filter |
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* set frame colorspace property |
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*/ |
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#include "libavutil/common.h" |
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/opt.h" |
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#include "bsf.h" |
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typedef struct ProresMetadataContext { |
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const AVClass *class; |
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int color_primaries; |
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int transfer_characteristics; |
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int matrix_coefficients; |
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} ProresMetadataContext; |
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static int prores_metadata(AVBSFContext *bsf, AVPacket *pkt) |
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{ |
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ProresMetadataContext *ctx = bsf->priv_data; |
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int ret = 0; |
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int buf_size; |
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uint8_t *buf; |
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ret = ff_bsf_get_packet_ref(bsf, pkt); |
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if (ret < 0) |
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return ret; |
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ret = av_packet_make_writable(pkt); |
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if (ret < 0) |
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goto fail; |
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buf = pkt->data; |
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buf_size = pkt->size; |
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/* check start of the prores frame */ |
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if (buf_size < 28) { |
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av_log(bsf, AV_LOG_ERROR, "not enough data in prores frame\n"); |
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ret = AVERROR_INVALIDDATA; |
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goto fail; |
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} |
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if (AV_RL32(buf + 4) != AV_RL32("icpf")) { |
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av_log(bsf, AV_LOG_ERROR, "invalid frame header\n"); |
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ret = AVERROR_INVALIDDATA; |
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goto fail; |
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} |
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if (AV_RB16(buf + 8) < 28) { |
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av_log(bsf, AV_LOG_ERROR, "invalid frame header size\n"); |
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ret = AVERROR_INVALIDDATA; |
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goto fail; |
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} |
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/* set the new values */ |
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if (ctx->color_primaries != -1) |
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buf[8+14] = ctx->color_primaries; |
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if (ctx->transfer_characteristics != -1) |
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buf[8+15] = ctx->transfer_characteristics; |
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if (ctx->matrix_coefficients != -1) |
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buf[8+16] = ctx->matrix_coefficients; |
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fail: |
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if (ret < 0) |
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av_packet_unref(pkt); |
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return ret; |
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} |
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static const enum AVCodecID codec_ids[] = { |
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AV_CODEC_ID_PRORES, AV_CODEC_ID_NONE, |
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}; |
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static int prores_metadata_init(AVBSFContext *bsf) |
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{ |
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ProresMetadataContext *ctx = bsf->priv_data; |
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/*! check options */ |
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switch (ctx->color_primaries) { |
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case -1: |
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case 0: |
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case AVCOL_PRI_BT709: |
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case AVCOL_PRI_BT470BG: |
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case AVCOL_PRI_SMPTE170M: |
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case AVCOL_PRI_BT2020: |
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case AVCOL_PRI_SMPTE431: |
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case AVCOL_PRI_SMPTE432: |
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break; |
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default: |
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av_log(bsf, AV_LOG_ERROR, "Color primaries %d is not a valid value\n", ctx->color_primaries); |
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return AVERROR(EINVAL); |
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} |
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switch (ctx->matrix_coefficients) { |
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case -1: |
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case 0: |
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case AVCOL_PRI_BT709: |
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case AVCOL_SPC_SMPTE170M: |
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case AVCOL_SPC_BT2020_NCL: |
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break; |
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default: |
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av_log(bsf, AV_LOG_ERROR, "Colorspace %d is not a valid value\n", ctx->matrix_coefficients); |
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return AVERROR(EINVAL); |
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} |
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return 0; |
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} |
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#define OFFSET(x) offsetof(ProresMetadataContext, x) |
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#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_BSF_PARAM) |
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static const AVOption options[] = { |
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{"color_primaries", "select color primaries", OFFSET(color_primaries), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_PRI_SMPTE432, FLAGS, "color_primaries"}, |
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{"auto", "keep the same color primaries", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"bt2020", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"smpte431", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"smpte432", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
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{"color_trc", "select color transfer", OFFSET(transfer_characteristics), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_TRC_BT709, FLAGS, "color_trc"}, |
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{"auto", "keep the same color transfer", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
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{"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
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{"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
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{"colorspace", "select colorspace", OFFSET(matrix_coefficients), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_SPC_BT2020_NCL, FLAGS, "colorspace"}, |
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{"auto", "keep the same colorspace", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
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{"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
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{"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
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{"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
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{"bt2020nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
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{ NULL }, |
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}; |
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static const AVClass prores_metadata_class = { |
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.class_name = "prores_metadata_bsf", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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const AVBitStreamFilter ff_prores_metadata_bsf = { |
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.name = "prores_metadata", |
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.init = prores_metadata_init, |
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.filter = prores_metadata, |
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.priv_data_size = sizeof(ProresMetadataContext), |
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.priv_class = &prores_metadata_class, |
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.codec_ids = codec_ids, |
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}; |
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