Commit Graph

10 Commits

Author SHA1 Message Date
Max Kellermann
2b782b82ea output: semi-asynchronous playback
Send an output buffer to all output plugins at the same time, instead
of waiting for each of them separately.  Make several functions
non-blocking, and introduce the new function audio_output_wait_all()
to synchronize with all audio output threads.
2008-09-24 07:23:19 +02:00
Max Kellermann
acc4a0ba2d output: make "struct audio_output" opaque for output plugins
We have eliminated direct accesses to the audio_output struct from
the all output plugins.  Make it opaque for them, and move its real
declaration to output_internal.h, similar to decoder_internal.h.

Pass the opaque structure to plugin.init() only, which will return the
plugin's data pointer on success, and NULL on failure.  This data
pointer will be passed to all other methods instead of the
audio_output struct.
2008-09-24 07:20:55 +02:00
Max Kellermann
d32f49a90b output: one thread per audio output
To keep I/O nastiness and latencies away from the core, move the audio
output code to a separate thread, one per output.  The thread is
created on demand, and currently runs until mpd exits.
2008-09-24 07:20:26 +02:00
Max Kellermann
85d952c58b output: copy reqAudioFormat to outAudioFormat only if not yet open
If the output device is already open, it may have modified
outAudioFormat; in this case, outAudioFormat is still valid, and does
not need an overwrite.
2008-09-11 07:50:20 +02:00
Max Kellermann
3aa4564b56 output: removed audio_output.sameInAndOutFormats
Eliminate sameInAndOutFormats and check with audio_format_equals()
each time it this information is needed.  Another 4 bytes saved.
2008-09-11 07:48:30 +02:00
Max Kellermann
56cf54e880 output: removed audio_output.convertAudioFormat
Instead of checking convertAudioFormat, we can simply check if
reqAudioFormat is defined.  This saves 4 bytes in the struct.
2008-09-11 07:47:28 +02:00
Max Kellermann
be9212ba84 audio: moved cmpAudioFormat() to audio_format.h
Rename it to audio_format_equals() and return "true" if they are
equal.
2008-09-09 10:05:15 +02:00
Max Kellermann
7f1cccb3ea audio: replaced copyAudioFormat() with simple assignment
The "!src" check in copyAudioFormat() used to hide bugs - one should
never pass NULL to it.  There is one caller which might pass NULL, add
a check in this caller.

Instead of doing mempcy(), we can simply assign the structures, which
looks more natural.
2008-09-09 10:04:42 +02:00
Max Kellermann
f9316fbbbe output: renamed the functions in output_control.c
Getting rid of CamcelCase, again.
2008-09-09 10:03:24 +02:00
Max Kellermann
e2c916e6ca output: moved code from audioOutput.c to output_control.c
Similar to decoder_control.c, output_control.c will provide functions
for controlling the output thread (which will be implemented later).
2008-09-09 10:02:34 +02:00