tdesktop/Telegram/SourceFiles/media/media_child_ffmpeg_loader.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "media/media_child_ffmpeg_loader.h"
#include "core/crash_reports.h"
namespace {
constexpr AVSampleFormat AudioToFormat = AV_SAMPLE_FMT_S16;
constexpr int64_t AudioToChannelLayout = AV_CH_LAYOUT_STEREO;
constexpr int32 AudioToChannels = 2;
bool IsPlanarFormat(int format) {
return (format == AV_SAMPLE_FMT_U8P)
|| (format == AV_SAMPLE_FMT_S16P)
|| (format == AV_SAMPLE_FMT_S32P)
|| (format == AV_SAMPLE_FMT_FLTP)
|| (format == AV_SAMPLE_FMT_DBLP)
|| (format == AV_SAMPLE_FMT_S64P);
}
} // namespace
VideoSoundData::~VideoSoundData() {
if (context) {
avcodec_close(context);
avcodec_free_context(&context);
context = nullptr;
}
}
ChildFFMpegLoader::ChildFFMpegLoader(std::unique_ptr<VideoSoundData> &&data)
: AbstractAudioFFMpegLoader(
FileLocation(),
QByteArray(),
base::byte_vector())
, _parentData(std::move(data)) {
}
bool ChildFFMpegLoader::open(TimeMs positionMs) {
return initUsingContext(
_parentData->context,
_parentData->length,
_parentData->frequency);
}
AudioPlayerLoader::ReadResult ChildFFMpegLoader::readMore(
QByteArray &result,
int64 &samplesAdded) {
const auto readResult = readFromReadyContext(
_parentData->context,
result,
samplesAdded);
if (readResult != ReadResult::Wait) {
return readResult;
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}
if (_queue.isEmpty()) {
return _eofReached ? ReadResult::EndOfFile : ReadResult::Wait;
}
AVPacket packet;
FFMpeg::packetFromDataWrap(packet, _queue.dequeue());
_eofReached = FFMpeg::isNullPacket(packet);
if (_eofReached) {
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avcodec_send_packet(_parentData->context, nullptr); // drain
return ReadResult::Ok;
}
auto res = avcodec_send_packet(_parentData->context, &packet);
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if (res < 0) {
FFMpeg::freePacket(&packet);
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char err[AV_ERROR_MAX_STRING_SIZE] = { 0 };
LOG(("Audio Error: Unable to avcodec_send_packet() file '%1', data size '%2', error %3, %4").arg(_file.name()).arg(_data.size()).arg(res).arg(av_make_error_string(err, sizeof(err), res)));
// There is a sample voice message where skipping such packet
// results in a crash (read_access to nullptr) in swr_convert().
if (res == AVERROR_INVALIDDATA) {
return ReadResult::NotYet; // try to skip bad packet
}
return ReadResult::Error;
}
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FFMpeg::freePacket(&packet);
return ReadResult::Ok;
}
void ChildFFMpegLoader::enqueuePackets(QQueue<FFMpeg::AVPacketDataWrap> &packets) {
_queue += std::move(packets);
packets.clear();
}
ChildFFMpegLoader::~ChildFFMpegLoader() {
for (auto &packetData : base::take(_queue)) {
AVPacket packet;
FFMpeg::packetFromDataWrap(packet, packetData);
FFMpeg::freePacket(&packet);
}
}