| /* |
| * Prores Metadata bitstream filter |
| * Copyright (c) 2018 Jokyo Images |
| * |
| * 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 |
| */ |
| |
| /** |
| * @file |
| * Prores Metadata bitstream filter |
| * set frame colorspace property |
| */ |
| |
| #include "libavutil/common.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/opt.h" |
| |
| #include "bsf.h" |
| #include "bsf_internal.h" |
| |
| typedef struct ProresMetadataContext { |
| const AVClass *class; |
| |
| int color_primaries; |
| int transfer_characteristics; |
| int matrix_coefficients; |
| } ProresMetadataContext; |
| |
| static int prores_metadata(AVBSFContext *bsf, AVPacket *pkt) |
| { |
| ProresMetadataContext *ctx = bsf->priv_data; |
| int ret = 0; |
| int buf_size; |
| uint8_t *buf; |
| |
| ret = ff_bsf_get_packet_ref(bsf, pkt); |
| if (ret < 0) |
| return ret; |
| |
| ret = av_packet_make_writable(pkt); |
| if (ret < 0) |
| goto fail; |
| |
| buf = pkt->data; |
| buf_size = pkt->size; |
| |
| /* check start of the prores frame */ |
| if (buf_size < 28) { |
| av_log(bsf, AV_LOG_ERROR, "not enough data in prores frame\n"); |
| ret = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| |
| if (AV_RL32(buf + 4) != AV_RL32("icpf")) { |
| av_log(bsf, AV_LOG_ERROR, "invalid frame header\n"); |
| ret = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| |
| if (AV_RB16(buf + 8) < 28) { |
| av_log(bsf, AV_LOG_ERROR, "invalid frame header size\n"); |
| ret = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| |
| /* set the new values */ |
| if (ctx->color_primaries != -1) |
| buf[8+14] = ctx->color_primaries; |
| if (ctx->transfer_characteristics != -1) |
| buf[8+15] = ctx->transfer_characteristics; |
| if (ctx->matrix_coefficients != -1) |
| buf[8+16] = ctx->matrix_coefficients; |
| |
| fail: |
| if (ret < 0) |
| av_packet_unref(pkt); |
| return ret; |
| } |
| |
| static const enum AVCodecID codec_ids[] = { |
| AV_CODEC_ID_PRORES, AV_CODEC_ID_NONE, |
| }; |
| |
| static int prores_metadata_init(AVBSFContext *bsf) |
| { |
| ProresMetadataContext *ctx = bsf->priv_data; |
| /*! check options */ |
| switch (ctx->color_primaries) { |
| case -1: |
| case 0: |
| case AVCOL_PRI_BT709: |
| case AVCOL_PRI_BT470BG: |
| case AVCOL_PRI_SMPTE170M: |
| case AVCOL_PRI_BT2020: |
| case AVCOL_PRI_SMPTE431: |
| case AVCOL_PRI_SMPTE432: |
| break; |
| default: |
| av_log(bsf, AV_LOG_ERROR, "Color primaries %d is not a valid value\n", ctx->color_primaries); |
| return AVERROR(EINVAL); |
| } |
| |
| switch (ctx->matrix_coefficients) { |
| case -1: |
| case 0: |
| case AVCOL_SPC_BT709: |
| case AVCOL_SPC_SMPTE170M: |
| case AVCOL_SPC_BT2020_NCL: |
| break; |
| default: |
| av_log(bsf, AV_LOG_ERROR, "Colorspace %d is not a valid value\n", ctx->matrix_coefficients); |
| return AVERROR(EINVAL); |
| } |
| |
| return 0; |
| } |
| |
| #define OFFSET(x) offsetof(ProresMetadataContext, x) |
| #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_BSF_PARAM) |
| static const AVOption options[] = { |
| {"color_primaries", "select color primaries", OFFSET(color_primaries), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_PRI_SMPTE432, FLAGS, "color_primaries"}, |
| {"auto", "keep the same color primaries", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| {"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| {"bt2020", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| {"smpte431", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| {"smpte432", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432}, INT_MIN, INT_MAX, FLAGS, "color_primaries"}, |
| |
| {"color_trc", "select color transfer", OFFSET(transfer_characteristics), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_TRC_NB - 1, FLAGS, "color_trc"}, |
| {"auto", "keep the same color transfer", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
| {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
| {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
| {"smpte2084", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE2084}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
| {"arib-std-b67", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_ARIB_STD_B67}, INT_MIN, INT_MAX, FLAGS, "color_trc"}, |
| |
| {"colorspace", "select colorspace", OFFSET(matrix_coefficients), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_SPC_BT2020_NCL, FLAGS, "colorspace"}, |
| {"auto", "keep the same colorspace", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
| {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
| {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
| {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
| {"bt2020nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL}, INT_MIN, INT_MAX, FLAGS, "colorspace"}, |
| |
| { NULL }, |
| }; |
| |
| static const AVClass prores_metadata_class = { |
| .class_name = "prores_metadata_bsf", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| const AVBitStreamFilter ff_prores_metadata_bsf = { |
| .name = "prores_metadata", |
| .init = prores_metadata_init, |
| .filter = prores_metadata, |
| .priv_data_size = sizeof(ProresMetadataContext), |
| .priv_class = &prores_metadata_class, |
| .codec_ids = codec_ids, |
| }; |