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MPEGPlyaer: A bit of audio mutation. Remove a useless thread state. Take some control over the buffer away from the audio thread itself. Some atomicity corrections.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28984 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2011-01-07 05:17:28 +00:00
parent b1a1831a17
commit 39107956ab
5 changed files with 141 additions and 84 deletions

View file

@ -51,14 +51,13 @@
/* Define this as "1" to have a test tone instead of silence clip */
#define SILENCE_TEST_TONE 0
/* NOTE: Sizes make no frame header allowance when considering duration */
#define PCMOUT_BUFSIZE (CLOCK_RATE/2*4) /* 1/2s */
#define PCMOUT_GUARD_SAMPLES ((CLOCK_RATE*576+7999)/8000) /* Worst upsampling case */
#define PCMOUT_GUARD_SIZE (PCMOUT_GUARD_SAMPLES*4 + sizeof (struct pcm_frame_header))
#define PCMOUT_GUARD_SIZE (PCMOUT_BUFSIZE) /* guarantee contiguous sizes */
#define PCMOUT_ALLOC_SIZE (PCMOUT_BUFSIZE + PCMOUT_GUARD_SIZE)
/* Start pcm playback @ 25% full */
#define PCMOUT_PLAY_WM (PCMOUT_BUFSIZE/4)
/* No valid audio frame is smaller */
#define PCMOUT_LOW_WM (sizeof (struct pcm_frame_header))
#define PCMOUT_LOW_WM (0)
/** disk buffer **/
#define DISK_BUF_LOW_WATERMARK (1024*1024)