177 lines
7 KiB
C
177 lines
7 KiB
C
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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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#include "bsf_internal.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_SPC_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_NB - 1, 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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{"smpte2084", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE2084}, INT_MIN, INT_MAX, FLAGS, "color_trc"},
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{"arib-std-b67", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_ARIB_STD_B67}, 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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