mirror of https://git.videolan.org/git/ffmpeg.git
120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
/*
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* DOVI ISO Media common code
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*
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* Copyright (c) 2020 Vacing Fang <vacingfang@tencent.com>
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* Copyright (c) 2021 quietvoid
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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/dovi_meta.h"
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#include "libavutil/mem.h"
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#include "libavcodec/put_bits.h"
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#include "avformat.h"
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#include "dovi_isom.h"
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int ff_isom_parse_dvcc_dvvc(void *logctx, AVStream *st,
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const uint8_t *buf_ptr, uint64_t size)
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{
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uint32_t buf;
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AVDOVIDecoderConfigurationRecord *dovi;
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size_t dovi_size;
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if (size > (1 << 30) || size < 4)
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return AVERROR_INVALIDDATA;
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dovi = av_dovi_alloc(&dovi_size);
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if (!dovi)
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return AVERROR(ENOMEM);
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dovi->dv_version_major = *buf_ptr++; // 8 bits
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dovi->dv_version_minor = *buf_ptr++; // 8 bits
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buf = *buf_ptr++ << 8;
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buf |= *buf_ptr++;
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dovi->dv_profile = (buf >> 9) & 0x7f; // 7 bits
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dovi->dv_level = (buf >> 3) & 0x3f; // 6 bits
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dovi->rpu_present_flag = (buf >> 2) & 0x01; // 1 bit
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dovi->el_present_flag = (buf >> 1) & 0x01; // 1 bit
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dovi->bl_present_flag = buf & 0x01; // 1 bit
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// Has enough remaining data
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if (size >= 5) {
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dovi->dv_bl_signal_compatibility_id = ((*buf_ptr++) >> 4) & 0x0f; // 4 bits
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} else {
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// 0 stands for None
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// Dolby Vision V1.2.93 profiles and levels
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dovi->dv_bl_signal_compatibility_id = 0;
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}
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if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
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AV_PKT_DATA_DOVI_CONF, (uint8_t *)dovi, dovi_size, 0)) {
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av_free(dovi);
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return AVERROR(ENOMEM);
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}
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av_log(logctx, AV_LOG_TRACE, "DOVI in dvcC/dvvC/dvwC box, version: %d.%d, profile: %d, level: %d, "
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"rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
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dovi->dv_version_major, dovi->dv_version_minor,
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dovi->dv_profile, dovi->dv_level,
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dovi->rpu_present_flag,
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dovi->el_present_flag,
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dovi->bl_present_flag,
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dovi->dv_bl_signal_compatibility_id);
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return 0;
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}
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void ff_isom_put_dvcc_dvvc(void *logctx, uint8_t out[ISOM_DVCC_DVVC_SIZE],
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const AVDOVIDecoderConfigurationRecord *dovi)
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{
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PutBitContext pb;
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init_put_bits(&pb, out, ISOM_DVCC_DVVC_SIZE);
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put_bits(&pb, 8, dovi->dv_version_major);
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put_bits(&pb, 8, dovi->dv_version_minor);
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put_bits(&pb, 7, dovi->dv_profile & 0x7f);
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put_bits(&pb, 6, dovi->dv_level & 0x3f);
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put_bits(&pb, 1, !!dovi->rpu_present_flag);
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put_bits(&pb, 1, !!dovi->el_present_flag);
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put_bits(&pb, 1, !!dovi->bl_present_flag);
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put_bits(&pb, 4, dovi->dv_bl_signal_compatibility_id & 0x0f);
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put_bits(&pb, 28, 0); /* reserved */
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put_bits32(&pb, 0); /* reserved */
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put_bits32(&pb, 0); /* reserved */
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put_bits32(&pb, 0); /* reserved */
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put_bits32(&pb, 0); /* reserved */
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flush_put_bits(&pb);
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av_log(logctx, AV_LOG_DEBUG,
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"DOVI in %s box, version: %d.%d, profile: %d, level: %d, "
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"rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
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dovi->dv_profile > 10 ? "dvwC" : (dovi->dv_profile > 7 ? "dvvC" : "dvcC"),
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dovi->dv_version_major, dovi->dv_version_minor,
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dovi->dv_profile, dovi->dv_level,
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dovi->rpu_present_flag,
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dovi->el_present_flag,
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dovi->bl_present_flag,
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dovi->dv_bl_signal_compatibility_id);
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}
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