libav_utils.h

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/*
 *  Copyright (C) 2004-2025 Savoir-faire Linux Inc.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
#pragma once
 
#include <libavutil/samplefmt.h>
 
#include <vector>
#include <map>
#include <string>
#include <memory>
 
extern "C" {
struct AVDictionary;
struct AVFrame;
struct AVPixFmtDescriptor;
struct AVBufferRef;
struct AVCodec;
void av_buffer_unref(AVBufferRef **buf);
}
 
namespace jami {
namespace libav_utils {
 
void av_init();
 
const char* const DEFAULT_H264_PROFILE_LEVEL_ID = "profile-level-id=428029";
const char* const MAX_H264_PROFILE_LEVEL_ID = "profile-level-id=640034";
 
enum AVSampleFormat choose_sample_fmt(const AVCodec* codec, const enum AVSampleFormat* preferred_formats, int preferred_formats_count);
enum AVSampleFormat choose_sample_fmt_default(const AVCodec* codec, enum AVSampleFormat defaultFormat);
 
bool is_yuv_planar(const AVPixFmtDescriptor& desc);
 
std::string getError(int err);
 
const char* getDictValue(const AVDictionary* d, const std::string& key, int flags = 0);
 
void setDictValue(AVDictionary** d, const std::string& key, const std::string& value, int flags = 0);
 
void fillWithBlack(AVFrame* frame);
 
void fillWithSilence(AVFrame* frame);
 
struct AVBufferRef_deleter {
    void operator()(AVBufferRef* buf) const { av_buffer_unref(&buf); }
};
 
typedef std::unique_ptr<AVBufferRef, AVBufferRef_deleter> AVBufferPtr;
 
} // namespace libav_utils
} // namespace jami