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Rework PCM buffer

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* Linked list instead of static array buffer pointers
* Variable sized chunks
* Improved mix handling
* Reduction in duplicated code
* Reduced IRAM usage w/o sacrificing performance
* Converted to almost entirely unsigned math
* Add pause function to reduce pcm_* exposure to playback.

This WILL break playback on the iPod until linuxstb makes a followup commit.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8612 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Brandon Low 2006-02-07 20:38:55 +00:00
parent 566ce5f951
commit 413da2a3d9
13 changed files with 667 additions and 531 deletions
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4
apps/codecs.h
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@ -128,8 +128,8 @@ struct codec_api {
void* (*get_codec_memory)(long *size);
/* Insert PCM data into audio buffer for playback. Playback will start
automatically. */
bool (*pcmbuf_insert)(char *data, long length);
bool (*pcmbuf_insert_split)(void *ch1, void *ch2, long length);
bool (*pcmbuf_insert)(const char *data, size_t length);
bool (*pcmbuf_insert_split)(const void *ch1, const void *ch2, size_t length);
/* Set song position in WPS (value in ms). */
void (*set_elapsed)(unsigned int value);