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Ask OpenAL to use kDefaultFrequency (48 kHz).

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This commit is contained in:
John Preston 2017-12-02 13:27:19 +04:00
parent 2161858088
commit a495de7cf8
3 changed files with 10 additions and 6 deletions
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8
Telegram/SourceFiles/media/media_audio.cpp
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@ -140,7 +140,11 @@ bool CreatePlaybackDevice() {
return false;
}
ALCint attributes[] = { ALC_STEREO_SOURCES, 128, 0 };
ALCint attributes[] = {
ALC_STEREO_SOURCES, 128,
ALC_FREQUENCY, Media::Player::kDefaultFrequency,
0
};
AudioContext = alcCreateContext(AudioDevice, attributes);
alcMakeContextCurrent(AudioContext);
if (ContextErrorHappened()) {
@ -256,7 +260,7 @@ namespace Player {
namespace {
constexpr auto kVolumeRound = 10000;
constexpr auto kPreloadSamples = 2LL * 48000; // preload next part if less than 2 seconds remains
constexpr auto kPreloadSamples = 2LL * kDefaultFrequency; // preload next part if less than 2 seconds remains
constexpr auto kFadeDuration = TimeMs(500);
constexpr auto kCheckPlaybackPositionTimeout = TimeMs(100); // 100ms per check audio position
constexpr auto kCheckPlaybackPositionDelta = 2400LL; // update position called each 2400 samples

4
Telegram/SourceFiles/media/media_audio_ffmpeg_loader.cpp
View file

@ -252,7 +252,7 @@ bool FFMpegLoader::open(qint64 &position) {
return false;
}
if (_samplesFrequency != 44100 && _samplesFrequency != 48000) {
if (_samplesFrequency != Media::Player::kDefaultFrequency) {
sampleSize = -1; // convert needed
}
@ -265,7 +265,7 @@ bool FFMpegLoader::open(qint64 &position) {
int64_t src_ch_layout = layout, dst_ch_layout = AudioToChannelLayout;
srcRate = _samplesFrequency;
AVSampleFormat src_sample_fmt = inputFormat, dst_sample_fmt = AudioToFormat;
dstRate = (_samplesFrequency != 44100 && _samplesFrequency != 48000) ? Media::Player::kDefaultFrequency : _samplesFrequency;
dstRate = Media::Player::kDefaultFrequency;
av_opt_set_int(swrContext, "in_channel_layout", src_ch_layout, 0);
av_opt_set_int(swrContext, "in_sample_rate", srcRate, 0);

4
Telegram/SourceFiles/media/media_child_ffmpeg_loader.cpp
View file

@ -76,7 +76,7 @@ bool ChildFFMpegLoader::open(qint64 &position) {
_sampleSize = -1; // convert needed
break;
}
if (_parentData->frequency != 44100 && _parentData->frequency != 48000) {
if (_parentData->frequency != Media::Player::kDefaultFrequency) {
_sampleSize = -1; // convert needed
}
@ -89,7 +89,7 @@ bool ChildFFMpegLoader::open(qint64 &position) {
int64_t src_ch_layout = layout, dst_ch_layout = AudioToChannelLayout;
_srcRate = _parentData->frequency;
AVSampleFormat src_sample_fmt = _inputFormat, dst_sample_fmt = AudioToFormat;
_dstRate = (_parentData->frequency != 44100 && _parentData->frequency != 48000) ? Media::Player::kDefaultFrequency : _parentData->frequency;
_dstRate = Media::Player::kDefaultFrequency;
av_opt_set_int(_swrContext, "in_channel_layout", src_ch_layout, 0);
av_opt_set_int(_swrContext, "in_sample_rate", _srcRate, 0);