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| author | James Courtier-Dutton <James@superbug.co.uk> | 2005-04-10 00:00:24 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2005-05-29 09:58:52 +0200 |
| commit | 310bacd29230abf5f2a230159e48e983171e0f26 (patch) | |
| tree | 16ae5d0cf14660de40db4435ebca0a64b1fcaf20 | |
| parent | 001f758990d685e7023008763795f1970ef56614 (diff) | |
| download | blackbird-op-linux-310bacd29230abf5f2a230159e48e983171e0f26.tar.gz blackbird-op-linux-310bacd29230abf5f2a230159e48e983171e0f26.zip | |
[ALSA] Improve playback startup. Increase buffer size, and reduce xruns.
EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
| -rw-r--r-- | sound/pci/emu10k1/p16v.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sound/pci/emu10k1/p16v.c b/sound/pci/emu10k1/p16v.c index 8dd87838fb22..776761fe5577 100644 --- a/sound/pci/emu10k1/p16v.c +++ b/sound/pci/emu10k1/p16v.c @@ -124,9 +124,9 @@ static snd_pcm_hardware_t snd_p16v_playback_hw = { .rate_max = 192000, .channels_min = 8, .channels_max = 8, - .buffer_bytes_max = (32*1024), + .buffer_bytes_max = ((65536 - 64) * 8), .period_bytes_min = 64, - .period_bytes_max = (16*1024), + .period_bytes_max = (65536 - 64), .periods_min = 2, .periods_max = 8, .fifo_size = 0, @@ -347,7 +347,8 @@ static int snd_p16v_pcm_prepare_playback(snd_pcm_substream_t *substream) snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19); snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0); snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr); - snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes + //snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes + snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0); snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0); snd_emu10k1_ptr20_write(emu, 0x08, channel, 0); @@ -602,7 +603,7 @@ int snd_p16v_pcm(emu10k1_t *emu, int device, snd_pcm_t **rpcm) if ((err = snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(emu->pci), - 64*1024, 64*1024)) < 0) /* FIXME: 32*1024 for sound buffer, between 32and64 for Periods table. */ + ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0) return err; //snd_printk("preallocate playback substream: err=%d\n", err); } |
