rockbox/firmware/export/sound.h, branch master

Add DAC's oversampling filter roll-off selection to sound settings.

2013-05-24T07:18:16+00:00

Change-Id: I1258ba50dd9308f49d97965562f3a423c9bfb785

Straighten out the mad twisted state of sound.c and related areas.

2013-04-15T16:02:05+00:00

This is going right in since it's long overdue. If anything is goofed,
drop me a line or just tweak it yourself if you know what's wrong. :-)

Make HW/SW codec interface more uniform when emulating HW functionality
on SWCODEC for functions such as "audiohw_set_pitch". The firmware-to-
DSP plumbing is in firmware/drivers/audiohw-swcodec.c. "sound_XXX"
APIs are all in sound.c with none in DSP code any longer.

Reduce number of settings definitions needed by each codec by providing
defaults for common ones like balance, channels and SW tone controls.

Remove need for separate SIM code and tables and add virtual codec header
for hosted targets.

Change-Id: I3f23702bca054fc9bda40f49824ce681bb7f777b

Implement universal in-PCM-driver software volume control.

2013-04-11T20:55:16+00:00

Implements double-buffered volume, balance and prescaling control in
the main PCM driver when HAVE_SW_VOLUME_CONTROL is defined ensuring
that all PCM is volume controlled and level changes are low in latency.

Supports -73 to +6 dB using a 15-bit factor so that no large-integer
math is needed.

Low-level hardware drivers do not have to implement it themselves but
parameters can be changed (currently defined in pcm-internal.h) to work
best with a particular SoC or to provide different volume ranges.

Volume and prescale calls should be made in the codec driver. It should
appear as a normal hardware interface. PCM volume calls expect .1 dB
units.

Change-Id: Idf6316a64ef4fb8abcede10707e1e6c6d01d57db
Reviewed-on: http://gerrit.rockbox.org/423
Reviewed-by: Michael Sevakis 
Tested-by: Michael Sevakis

Rename HAVE_PITCHSCREEN to HAVE_PITCHCONTROL

2012-05-09T12:32:38+00:00

Also move the definition to config.h

Change-Id: I36bb5020c5e06b2344292bc05e8c13ccc7a6a1ff
Reviewed-on: http://gerrit.rockbox.org/234
Reviewed-by: Nils Wallménius

Gigabeat S: Fully enable access to hardware tone controls and 3-D effect feature. Under the hood, it's designated a hardware equalizer since it is one. Implement code framework for hardware EQ in general. Menu aspect is well abstracted and so the UI and strings can be changed around if taste doesn't quite suit. So far the emphasis is distinction of the UI labelling from the software EQ so that it's clear the settings are for a different thing.

2010-05-15T13:09:45+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26051 a1c6a512-1295-4272-9138-f99709370657

Remove lots of simulator-speficic #ifdef'ing in sound.c to allow for DSP effects in the sims, e.g. for bass and treble (targets that do those effects in HW don't simulate using dsp).

2010-04-25T22:54:58+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25719 a1c6a512-1295-4272-9138-f99709370657

* Move DSP_CALLBACK_* enum to sound.h

2009-08-01T21:38:18+00:00

 * Add software based volume control for a certain range (SW_VOLUME_MIN -> SW_VOLUME_MAX)
 * Make Onda VX747 use it
 * Don't change volume or frequency in Ingenic Jz4740 codec driver when they're already set


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22106 a1c6a512-1295-4272-9138-f99709370657

Fix red in bootloaders

2009-07-11T17:16:23+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21782 a1c6a512-1295-4272-9138-f99709370657

Improvements to the pitch screen UI (FS#10359 by David Johnston)

2009-07-11T16:46:19+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21781 a1c6a512-1295-4272-9138-f99709370657

Updated our source code header to explicitly mention that we are GPL v2 or

2008-06-28T18:10:04+00:00

later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657