mpd/src/lib/ffmpeg/SampleFormat.hxx
2019-03-18 11:02:17 +01:00

81 lines
1.9 KiB
C++

/*
* 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_SAMPLE_FORMAT_HXX
#define MPD_FFMPEG_SAMPLE_FORMAT_HXX
#include "pcm/SampleFormat.hxx"
extern "C" {
#include <libavutil/samplefmt.h>
}
namespace Ffmpeg {
/**
* Convert a FFmpeg #AVSampleFormat to a MPD #SampleFormat. Returns
* SampleFormat::UNDEFINED if there is no direct mapping.
*/
constexpr SampleFormat
FromFfmpegSampleFormat(AVSampleFormat sample_fmt) noexcept
{
switch (sample_fmt) {
case AV_SAMPLE_FMT_S16:
case AV_SAMPLE_FMT_S16P:
return SampleFormat::S16;
case AV_SAMPLE_FMT_S32:
case AV_SAMPLE_FMT_S32P:
return SampleFormat::S32;
case AV_SAMPLE_FMT_FLT:
case AV_SAMPLE_FMT_FLTP:
return SampleFormat::FLOAT;
default:
return SampleFormat::UNDEFINED;
}
}
/**
* Convert a MPD #SampleFormat to a FFmpeg #AVSampleFormat. Returns
* AV_SAMPLE_FMT_NONE if there is no direct mapping.
*/
constexpr AVSampleFormat
ToFfmpegSampleFormat(SampleFormat f) noexcept
{
switch (f) {
case SampleFormat::S16:
return AV_SAMPLE_FMT_S16;
case SampleFormat::S32:
return AV_SAMPLE_FMT_S32;
case SampleFormat::FLOAT:
return AV_SAMPLE_FMT_FLT;
default:
return AV_SAMPLE_FMT_NONE;
}
}
} // namespace Ffmpeg
#endif