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Code Issues Releases Wiki Activity

Increased audio buffer time for PES packets.

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This commit is contained in:
Johns 2012-02-24 15:41:17 +01:00
parent 762959fbb4
commit 9b68248a3e
2 changed files with 12 additions and 7 deletions
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1
ChangeLog
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@ -1,6 +1,7 @@
User johns
Date:
Increased audio buffer time for PES packets.
Support configuration and set of video background.
Survive lost X11 display.
Fix bug: 100% cpu use with plugins like mp3.

18
audio.c
View File

@ -141,7 +141,7 @@ static unsigned AudioSampleRate; ///< audio sample rate in hz
static unsigned AudioChannels; ///< number of audio channels
static const int AudioBytesProSample = 2; ///< number of bytes per sample
static int64_t AudioPTS; ///< audio pts clock
static int AudioBufferTime = 216; ///< audio buffer time in ms
static int AudioBufferTime = 336; ///< audio buffer time in ms
#ifdef USE_AUDIO_THREAD
static pthread_t AudioThread; ///< audio play thread
@ -303,7 +303,7 @@ static int AlsaAddToRingbuffer(const void *samples, int count)
/ (AudioSampleRate * AudioChannels * AudioBytesProSample),
VideoGetBuffers());
// forced start
if (AlsaStartThreshold * 2 < RingBufferUsedBytes(AlsaRingBuffer)) {
if (AlsaStartThreshold * 3 < RingBufferUsedBytes(AlsaRingBuffer)) {
return 1;
}
// enough video + audio buffered
@ -1066,7 +1066,7 @@ static int AlsaSetup(int *freq, int *channels, int use_ac3)
// FIXME: use hw_params for buffer_size period_size
#endif
#if 0
#if 1
if (0) { // no underruns allowed, play silence
snd_pcm_sw_params_t *sw_params;
snd_pcm_uframes_t boundary;
@ -1307,7 +1307,7 @@ static int OssAddToRingbuffer(const void *samples, int count)
/ (AudioSampleRate * AudioChannels * AudioBytesProSample),
VideoGetBuffers());
// forced start
if (OssStartThreshold * 2 < RingBufferUsedBytes(OssRingBuffer)) {
if (OssStartThreshold * 3 < RingBufferUsedBytes(OssRingBuffer)) {
return 1;
}
// enough video + audio buffered
@ -2098,12 +2098,12 @@ void AudioEnqueue(const void *samples, int count)
if (0) {
static uint32_t last;
static uint32_t tick;
static uint32_t max = 110;
static uint32_t max = 101;
uint64_t delay;
delay = AudioGetDelay();
tick = GetMsTicks();
if ((last && tick - last > max) || delay < 80 * 90) {
if ((last && tick - last > max) && AudioRunning) {
//max = tick - last;
Debug(3, "audio: packet delta %d %lu\n", tick - last, delay / 90);
@ -2252,11 +2252,15 @@ void AudioPause(void)
/**
** Set audio buffer time.
**
** PES audio packets have a max distance of 300 ms.
** TS audio packet have a max distance of 100 ms.
** The period size of the audio buffer is 24 ms.
*/
void AudioSetBufferTime(int delay)
{
if (!delay) {
delay = 216;
delay = 336;
}
AudioBufferTime = delay;
}