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-rw-r--r--Alc/alsa.c42
1 files changed, 25 insertions, 17 deletions
diff --git a/Alc/alsa.c b/Alc/alsa.c
index e96e185f..2adf7b02 100644
--- a/Alc/alsa.c
+++ b/Alc/alsa.c
@@ -69,10 +69,12 @@ MAKE_FUNC(snd_pcm_hw_params_set_periods_near);
MAKE_FUNC(snd_pcm_hw_params_set_rate_near);
MAKE_FUNC(snd_pcm_hw_params_set_rate);
MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_near);
+MAKE_FUNC(snd_pcm_hw_params_set_period_size_near);
MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_min);
MAKE_FUNC(snd_pcm_hw_params_get_buffer_size);
MAKE_FUNC(snd_pcm_hw_params_get_period_size);
MAKE_FUNC(snd_pcm_hw_params_get_access);
+MAKE_FUNC(snd_pcm_hw_params_get_periods);
MAKE_FUNC(snd_pcm_hw_params);
MAKE_FUNC(snd_pcm_sw_params_malloc);
MAKE_FUNC(snd_pcm_sw_params_current);
@@ -411,7 +413,7 @@ static void alsa_close_playback(ALCdevice *device)
static ALCboolean alsa_reset_playback(ALCdevice *device)
{
alsa_data *data = (alsa_data*)device->ExtraData;
- snd_pcm_uframes_t bufferSizeInFrames;
+ snd_pcm_uframes_t periodSizeInFrames;
snd_pcm_sw_params_t *sp = NULL;
snd_pcm_hw_params_t *p = NULL;
snd_pcm_access_t access;
@@ -439,8 +441,8 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
}
allowmmap = GetConfigValueBool("alsa", "mmap", 1);
- periods = GetConfigValueInt("alsa", "periods", 0);
- bufferSizeInFrames = device->BufferSize;
+ periods = GetConfigValueInt("alsa", "periods", device->NumUpdates);
+ periodSizeInFrames = device->UpdateSize;
rate = device->Frequency;
err = NULL;
@@ -451,6 +453,7 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
/* set interleaved access */
if(err == NULL && (!allowmmap || (i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_MMAP_INTERLEAVED)) < 0))
{
+ if(periods > 2) periods--;
if((i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
err = "set access";
}
@@ -466,16 +469,18 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
/* set rate (implicitly constrains period/buffer parameters) */
if(err == NULL && (i=psnd_pcm_hw_params_set_rate_near(data->pcmHandle, p, &rate, NULL)) < 0)
err = "set rate near";
- /* set buffer size in frame units (implicitly sets period size/bytes/time and buffer time/bytes) */
- if(err == NULL && (i=psnd_pcm_hw_params_set_buffer_size_near(data->pcmHandle, p, &bufferSizeInFrames)) < 0)
- err = "set buffer size near";
+ /* set period size in frame units (implicitly sets buffer size/bytes/time and period time/bytes) */
+ if(err == NULL && (i=psnd_pcm_hw_params_set_period_size_near(data->pcmHandle, p, &periodSizeInFrames, NULL)) < 0)
+ err = "set period size near";
/* install and prepare hardware configuration */
if(err == NULL && (i=psnd_pcm_hw_params(data->pcmHandle, p)) < 0)
err = "set params";
if(err == NULL && (i=psnd_pcm_hw_params_get_access(p, &access)) < 0)
err = "get access";
- if(err == NULL && (i=psnd_pcm_hw_params_get_period_size(p, &bufferSizeInFrames, NULL)) < 0)
+ if(err == NULL && (i=psnd_pcm_hw_params_get_period_size(p, &periodSizeInFrames, NULL)) < 0)
err = "get period size";
+ if(err == NULL && (i=psnd_pcm_hw_params_get_periods(p, &periods, NULL)) < 0)
+ err = "get periods";
if(err != NULL)
{
AL_PRINT("%s failed: %s\n", err, psnd_strerror(i));
@@ -490,7 +495,7 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
if((i=psnd_pcm_sw_params_current(data->pcmHandle, sp)) != 0)
err = "sw current";
- if(err == NULL && (i=psnd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, bufferSizeInFrames)) != 0)
+ if(err == NULL && (i=psnd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, periodSizeInFrames)) != 0)
err = "sw set avail min";
if(err == NULL && (i=psnd_pcm_sw_params(data->pcmHandle, sp)) != 0)
err = "sw set params";
@@ -503,15 +508,19 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
psnd_pcm_sw_params_free(sp);
- data->size = psnd_pcm_frames_to_bytes(data->pcmHandle, bufferSizeInFrames);
+ data->size = psnd_pcm_frames_to_bytes(data->pcmHandle, periodSizeInFrames);
if(access == SND_PCM_ACCESS_RW_INTERLEAVED)
{
+ /* Increase periods by one, since the temp buffer counts as an extra
+ * period */
+ periods++;
data->buffer = malloc(data->size);
if(!data->buffer)
{
AL_PRINT("buffer malloc failed\n");
return ALC_FALSE;
}
+ data->thread = StartThread(ALSANoMMapProc, device);
}
else
{
@@ -523,12 +532,8 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
data->buffer = NULL;
return ALC_FALSE;
}
- }
-
- if(access == SND_PCM_ACCESS_RW_INTERLEAVED)
- data->thread = StartThread(ALSANoMMapProc, device);
- else
data->thread = StartThread(ALSAProc, device);
+ }
if(data->thread == NULL)
{
AL_PRINT("Could not create playback thread\n");
@@ -537,7 +542,8 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
return ALC_FALSE;
}
- device->UpdateSize = bufferSizeInFrames;
+ device->UpdateSize = periodSizeInFrames;
+ device->NumUpdates = periods;
device->Frequency = rate;
return ALC_TRUE;
@@ -631,7 +637,7 @@ open_alsa:
}
err = NULL;
- bufferSizeInFrames = pDevice->BufferSize;
+ bufferSizeInFrames = pDevice->UpdateSize * pDevice->NumUpdates;
psnd_pcm_hw_params_malloc(&p);
if((i=psnd_pcm_hw_params_any(data->pcmHandle, p)) < 0)
@@ -677,7 +683,7 @@ open_alsa:
frameSize = aluChannelsFromFormat(pDevice->Format);
frameSize *= aluBytesFromFormat(pDevice->Format);
- data->ring = CreateRingBuffer(frameSize, pDevice->BufferSize);
+ data->ring = CreateRingBuffer(frameSize, bufferSizeInFrames);
if(!data->ring)
{
AL_PRINT("ring buffer create failed\n");
@@ -815,9 +821,11 @@ LOAD_FUNC(snd_pcm_hw_params_set_rate_near);
LOAD_FUNC(snd_pcm_hw_params_set_rate);
LOAD_FUNC(snd_pcm_hw_params_set_buffer_size_near);
LOAD_FUNC(snd_pcm_hw_params_set_buffer_size_min);
+LOAD_FUNC(snd_pcm_hw_params_set_period_size_near);
LOAD_FUNC(snd_pcm_hw_params_get_buffer_size);
LOAD_FUNC(snd_pcm_hw_params_get_period_size);
LOAD_FUNC(snd_pcm_hw_params_get_access);
+LOAD_FUNC(snd_pcm_hw_params_get_periods);
LOAD_FUNC(snd_pcm_hw_params);
LOAD_FUNC(snd_pcm_sw_params_malloc);
LOAD_FUNC(snd_pcm_sw_params_current);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 19:58:44 +0000