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Adjusted buffer watermarks for better crossfade and playback stability.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10416 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Miika Pekkarinen 2006-08-02 18:35:24 +00:00
parent d8ac607418
commit f3add92841
1 changed files with 6 additions and 5 deletions
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11
apps/pcmbuf.c
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@ -36,7 +36,8 @@
#include "audio.h" #include "audio.h"
#include "dsp.h" #include "dsp.h"
#define PCMBUF_WATERMARK (NATIVE_FREQUENCY * 4 * 1) /* 1.5s low mark */
#define PCMBUF_WATERMARK (NATIVE_FREQUENCY * 6)
/* Structure we can use to queue pcm chunks in memory to be played /* Structure we can use to queue pcm chunks in memory to be played
* by the driver code. */ * by the driver code. */
@ -298,7 +299,7 @@ bool pcmbuf_crossfade_init(bool manual_skip)
} }
/* Not enough data, or crossfade disabled, flush the old data instead */ /* Not enough data, or crossfade disabled, flush the old data instead */
if (LOW_DATA(6) || !pcmbuf_is_crossfade_enabled() || low_latency_mode) if (LOW_DATA(2) || !pcmbuf_is_crossfade_enabled() || low_latency_mode)
{ {
pcmbuf_boost(true); pcmbuf_boost(true);
pcmbuf_flush_fillpos(); pcmbuf_flush_fillpos();
@ -973,10 +974,10 @@ void pcmbuf_crossfade_enable(bool on_off)
crossfade_enabled = on_off; crossfade_enabled = on_off;
if (crossfade_enabled) { if (crossfade_enabled) {
/* If crossfading, try to keep the buffer full other than 2 second */ /* If crossfading, try to keep the buffer full other than 1 second */
pcmbuf_set_watermark_bytes(pcmbuf_size - PCMBUF_WATERMARK * 2); pcmbuf_set_watermark_bytes(pcmbuf_size - (NATIVE_FREQUENCY * 4 * 1));
} else { } else {
/* Otherwise, just keep it above 1 second */ /* Otherwise, just keep it above 2 second */
pcmbuf_set_watermark_bytes(PCMBUF_WATERMARK); pcmbuf_set_watermark_bytes(PCMBUF_WATERMARK);
} }
} }