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/*
* Copyright 2003-2019 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_FFMPEG_CODEC_HXX
#define MPD_FFMPEG_CODEC_HXX
#include "Error.hxx"
extern "C" {
#include <libavcodec/avcodec.h>
}
#include <new>
namespace Ffmpeg {
class CodecContext {
AVCodecContext *codec_context = nullptr;
public:
CodecContext() = default;
explicit CodecContext(AVCodec &codec)
:codec_context(avcodec_alloc_context3(&codec))
{
if (codec_context == nullptr)
throw std::bad_alloc();
}
~CodecContext() noexcept {
if (codec_context != nullptr)
avcodec_free_context(&codec_context);
}
CodecContext(CodecContext &&src) noexcept
:codec_context(std::exchange(src.codec_context, nullptr)) {}
CodecContext &operator=(CodecContext &&src) noexcept {
using std::swap;
swap(codec_context, src.codec_context);
return *this;
}
AVCodecContext &operator*() noexcept {
return *codec_context;
}
AVCodecContext *operator->() noexcept {
return codec_context;
}
void FillFromParameters(const AVCodecParameters &par) {
int err = avcodec_parameters_to_context(codec_context, &par);
if (err < 0)
throw MakeFfmpegError(err, "avcodec_parameters_to_context() failed");
}
void Open(const AVCodec &codec, AVDictionary **options) {
int err = avcodec_open2(codec_context, &codec, options);
if (err < 0)
throw MakeFfmpegError(err, "avcodec_open2() failed");
}
void FlushBuffers() noexcept {
avcodec_flush_buffers(codec_context);
}
};
} // namespace Ffmpeg
#endif