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Make PCM->driver interface about as simple as it will get. Registered callback, zero data, alignment and stops are handled entirely inside pcm.c; driver merely calls fixed pcm.c callback. Remove pcm_record_more and do it just like playback; the original reason behind it isn't very practical in general. Everything checks out on supported targets. There wer some compat changes I can't check out on many unsupoorted but if there's a problem it will be a minor oops. Plugins become incompatible due to recording tweak-- full update. Sorted API.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26253 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2010-05-24 16:42:32 +00:00
parent 6688988ec4
commit d56999890f
19 changed files with 277 additions and 460 deletions
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34
firmware/target/arm/s3c2440/gigabeat-fx/pcm-meg-fx.c
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@ -214,35 +214,27 @@ void pcm_play_dma_pause(bool pause)
void fiq_handler(void)
{
static unsigned char *start;
static size_t size;
register pcm_more_callback_type get_more; /* No stack for this */
static void *start;
static size_t size;
/* clear any pending interrupt */
SRCPND = DMA2_MASK;
/* Buffer empty. Try to get more. */
get_more = pcm_callback_for_more;
size = 0;
pcm_play_get_more_callback(&start, &size);
if (get_more == NULL || (get_more(&start, &size), size == 0))
{
/* Callback missing or no more DMA to do */
pcm_play_dma_stop();
pcm_play_dma_stopped_callback();
}
else
{
/* Flush any pending cache writes */
clean_dcache_range(start, size);
if (size == 0)
return;
/* set the new DMA values */
DCON2 = DMA_CONTROL_SETUP | (size >> 1);
DISRC2 = (unsigned int)start + 0x30000000;
/* Flush any pending cache writes */
clean_dcache_range(start, size);
/* Re-Activate the channel */
DMASKTRIG2 = 0x2;
}
/* set the new DMA values */
DCON2 = DMA_CONTROL_SETUP | (size >> 1);
DISRC2 = (unsigned int)start + 0x30000000;
/* Re-Activate the channel */
DMASKTRIG2 = 0x2;
}
size_t pcm_get_bytes_waiting(void)