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Buffering callbacks rework. There is now one callback for all the events that can occur. Callbacks are now registred only once instead of being removed after having been called.

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Fix FS#8092 by flushing the audio when a rebuffer is needed.
Also add some comments here and there.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15816 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Nicolas Pennequin 2007-11-26 21:13:08 +00:00
parent fa92f1b763
commit e24454f8b3
3 changed files with 70 additions and 36 deletions
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16
apps/buffering.h
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@ -35,6 +35,14 @@ enum data_type {
TYPE_UNKNOWN,
};
enum callback_event {
EVENT_DEFAULT,
EVENT_BUFFER_LOW,
EVENT_HANDLE_REBUFFER,
EVENT_HANDLE_CLOSED,
EVENT_HANDLE_MOVED,
};
/* Error return values */
#define ERR_HANDLE_NOT_FOUND -1
#define ERR_BUFFER_FULL -2
@ -98,7 +106,7 @@ size_t buf_used(void);
* CALLBACK UTILITIES
* ==================
*
* register_buffer_low_callback, unregister_buffer_low_callback:
* register_buffering_callback, unregister_buffering_callback:
*
* Register/Unregister callback functions that will get executed when the buffer
* goes below the low watermark. They are executed once, then forgotten.
@ -108,9 +116,9 @@ size_t buf_used(void);
****************************************************************************/
#define MAX_BUF_CALLBACKS 4
typedef void (*buffer_low_callback)(void);
bool register_buffer_low_callback(buffer_low_callback func);
void unregister_buffer_low_callback(buffer_low_callback func);
typedef void (*buffering_callback)(enum callback_event ev, int value);
bool register_buffering_callback(buffering_callback func);
void unregister_buffering_callback(buffering_callback func);
/* Settings */
enum {