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/*
* Copyright 2003-2020 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.
*/
#include "Interleave.hxx"
#include "Buffer.hxx"
#include "Error.hxx"
#include "pcm/Interleave.hxx"
#include "util/ConstBuffer.hxx"
extern "C" {
#include <libavutil/frame.h>
}
#include <cassert>
#include <new> // for std::bad_alloc
namespace Ffmpeg {
ConstBuffer<void>
InterleaveFrame(const AVFrame &frame, FfmpegBuffer &buffer)
{
assert(frame.nb_samples > 0);
const AVSampleFormat format = AVSampleFormat(frame.format);
const unsigned channels = frame.channels;
const std::size_t n_frames = frame.nb_samples;
int plane_size;
const int data_size =
av_samples_get_buffer_size(&plane_size, channels,
n_frames, format, 1);
assert(data_size != 0);
if (data_size < 0)
throw MakeFfmpegError(data_size);
void *output_buffer;
if (av_sample_fmt_is_planar(format) && channels > 1) {
output_buffer = buffer.GetT<uint8_t>(data_size);
if (output_buffer == nullptr)
/* Not enough memory - shouldn't happen */
throw std::bad_alloc();
PcmInterleave(output_buffer,
ConstBuffer<const void *>((const void *const*)frame.extended_data,
channels),
n_frames,
av_get_bytes_per_sample(format));
} else {
output_buffer = frame.extended_data[0];
}
return { output_buffer, (size_t)data_size };
}
} // namespace Ffmpeg
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