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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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27
apps/debug_menu.c
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@ -209,7 +209,7 @@ extern int filebuflen;
extern int filebufused;
extern int track_count;
static int ticks, boost_ticks;
static unsigned int ticks, boost_ticks;
void dbg_audio_task(void)
{
@ -225,7 +225,8 @@ bool dbg_audio_thread(void)
int button;
int line;
bool done = false;
int bufsize = pcmbuf_get_bufsize();
size_t bufsize = pcmbuf_get_bufsize();
int pcmbufdescs = pcmbuf_descs();
ticks = boost_ticks = 0;
@ -239,6 +240,12 @@ bool dbg_audio_thread(void)
button = button_get_w_tmo(HZ/5);
switch(button)
{
case SETTINGS_NEXT:
audio_next();
break;
case SETTINGS_PREV:
audio_prev();
break;
case SETTINGS_CANCEL:
done = true;
break;
@ -248,8 +255,8 @@ bool dbg_audio_thread(void)
lcd_clear_display();
snprintf(buf, sizeof(buf), "pcm: %d/%d",
bufsize-(int)audiobuffer_free, bufsize);
snprintf(buf, sizeof(buf), "pcm: %7ld/%7ld",
bufsize-audiobuffer_free, bufsize);
lcd_puts(0, line++, buf);
/* Playable space left */
@ -257,7 +264,7 @@ bool dbg_audio_thread(void)
bufsize-audiobuffer_free, HORIZONTAL);
line++;
snprintf(buf, sizeof(buf), "codec: %d/%d", filebufused, filebuflen);
snprintf(buf, sizeof(buf), "codec: %8d/%8d", filebufused, filebuflen);
lcd_puts(0, line++, buf);
/* Playable space left */
@ -265,17 +272,21 @@ bool dbg_audio_thread(void)
filebufused, HORIZONTAL);
line++;
snprintf(buf, sizeof(buf), "track count: %d", track_count);
snprintf(buf, sizeof(buf), "track count: %2d", track_count);
lcd_puts(0, line++, buf);
snprintf(buf, sizeof(buf), "cpu freq: %dMHz",
snprintf(buf, sizeof(buf), "cpu freq: %3dMHz",
(int)((FREQ + 500000) / 1000000));
lcd_puts(0, line++, buf);
snprintf(buf, sizeof(buf), "boost ratio: %d%%",
snprintf(buf, sizeof(buf), "boost ratio: %3d%%",
boost_ticks * 100 / ticks);
lcd_puts(0, line++, buf);
snprintf(buf, sizeof(buf), "pcmbufdesc: %2d/%2d",
pcmbuf_used_descs(), pcmbufdescs);
lcd_puts(0, line++, buf);
lcd_update();
}