rockbox/apps/plugins/rockboy/rbsound.c, branch master

Revise the PCM callback system after adding multichannel audio.

2012-03-03T06:23:38+00:00

Additional status callback is added to pcm_play/rec_data instead of
using a special function to set it. Status includes DMA error
reporting to the status callback. Playback and recording callback
become more alike except playback uses "const void **addr" (because
the data should not be altered) and recording  uses "void **addr".
"const" is put in place throughout where appropriate.

Most changes are fairly trivial. One that should be checked in
particular because it isn't so much is telechips, if anyone cares to
bother. PP5002 is not so trivial either but that tested as working.

Change-Id: I4928d69b3b3be7fb93e259f81635232df9bd1df2
Reviewed-on: http://gerrit.rockbox.org/166
Reviewed-by: Michael Sevakis 
Tested-by: Michael Sevakis

rockboy: rename pcm_*() functions to avoid namespace clash with rockbox

2010-05-27T12:00:23+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26327 a1c6a512-1295-4272-9138-f99709370657

Code police and clean up for rockboy.

2007-10-16T18:16:22+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15144 a1c6a512-1295-4272-9138-f99709370657

Commit FS #7379 - This patch fixes most of the sound problems from the previous version. This is a complete rewrite of VisualBoyAdvance's sound code from C++ to C. This patch also eliminates the need for some large tables giving more room in IRAM and the plugin buffer.

2007-07-21T04:00:58+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13947 a1c6a512-1295-4272-9138-f99709370657

Fix red rockboy builds on archos. Somebody with more rockboy knowledge might want to check this fix ;)

2007-06-24T22:49:59+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13707 a1c6a512-1295-4272-9138-f99709370657

Sound improvements for rockboy - players now sync the sound (The gigabeat now plays at a steady 60 fps as long as the frameskip is set properly). If a new sample is not available a blank buffer is used. All devices use 44.1 kHz for gameboy sound now so no more high pitched sounds. Added a screen rotation option. Removed unscaled code for devices with a screensize smaller than the gameboy. All buttons are now configurable. Scroll wheel devices still have button configuration problems though.

2007-06-24T16:00:55+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13698 a1c6a512-1295-4272-9138-f99709370657

Plugins that play sound must be sure to set inputs and outputs on audio muxed targets. Add strict adherence to the interface protocols. Make sure playback sets the playback output as well.

2007-06-10T02:10:47+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13604 a1c6a512-1295-4272-9138-f99709370657

Allow rockboy to run while music is playing with smaller roms. Works on players that do not use the IRAM macros. Only tested on the Gigabeat as I think that is the only player that will run rockboy well with music. Also simplified the sound and reduced the code size a bit.

2007-04-18T07:41:31+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13199 a1c6a512-1295-4272-9138-f99709370657

Major Rockboy update.

2007-02-06T21:41:08+00:00

1) Adapt Rockboy to smaller screens (H10, X5, and iPod Nano).
2) Add the ability to use a preset palette on color targets. Choose 'Set Palette' from the main menu.
3) Clean up the code to remove any unused code and variables.
4) Changed tabs to spaces.
5) Disable reading and writing sound when sound is disabled.
6) Disbable writing to the RTC since it is not implemented yet.
7) Minor optimizations from WAC gnuboy CE and iBoy.
8) Massive clean up of code to make it appear consistent.
9) Change all C++ style comments to C style.
10) Completely reorganize dynarec. Add fixmes to all unimplemented opcodes. Add debug writes for all opcodes. Attempt to implement a few opcodes myself.
11) Silence some warnings when built using dynarec.
12) Minor reshuffling of IRAM, may or not offer a speed increase.
13) Include fixes found in the short-lived gnuboy CVS.

All in all, there's about a 10% improvement on my test roms when sound is disabled and slight improvement with sound. Especially noticable when there are few sprites on screen and less action is occurring. See FS #6567.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12216 a1c6a512-1295-4272-9138-f99709370657

Rework PCM buffer

2006-02-07T20:38:55+00:00

* 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