rockbox/apps/plugins/mpegplayer/audio_thread.c, branch xracer

Enable setting of global output samplerate on certain targets.

2013-07-06T02:22:04+00:00

Replaces the NATIVE_FREQUENCY constant with a configurable frequency.

The user may select 48000Hz if the hardware supports it. The default is
still 44100Hz and the minimum is 44100Hz. The setting is located in the
playback settings, under "Frequency".

"Frequency" was duplicated in english.lang for now to avoid having to
fix every .lang file for the moment and throwing everything out of sync
because of the new play_frequency feature in features.txt. The next
cleanup should combine it with the one included for recording and
generalize the ID label.

If the hardware doesn't support 48000Hz, no setting will be available.

On particular hardware where very high rates are practical and desireable,
the upper bound can be extended by patching.

The PCM mixer can be configured to play at the full hardware frequency
range. The DSP core can configure to the hardware minimum up to the
maximum playback setting (some buffers must be reserved according to
the maximum rate).

If only 44100Hz is supported or possible on a given target for playback,
using the DSP and mixer at other samperates is possible if the hardware
offers them.

Change-Id: I6023cf0c0baa8bc6292b6919b4dd3618a6a25622
Reviewed-on: http://gerrit.rockbox.org/479
Reviewed-by: Michael Sevakis 
Tested-by: Michael Sevakis

Purge the usage of DSP_SWITCH_FREQUENCY.

2013-05-05T04:48:40+00:00

DSP_SWITCH_FREQUENCY has been deprecated and the same enumerated value
as DSP_SET_FREQUENCY since major DSP revisions were committed. This
task should have been performed much earlier but, oh well, do it now.

Change-Id: I3f30d651b894136a07c7e17f78fc16a7d98631ff

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

Fundamentally rewrite much of the audio DSP.

2012-04-29T08:00:56+00:00

Creates a standard buffer passing, local data passing and messaging
system for processing stages. Stages can be moved to their own source
files to reduce clutter and ease assimilation of new ones. dsp.c
becomes dsp_core.c which supports an engine and framework for effects.

Formats and change notifications are passed along with the buffer so
that they arrive at the correct time at each stage in the chain
regardless of the internal delays of a particular one.

Removes restrictions on the number of samples that can be processed at
a time and it pays attention to destination buffer size restrictions
without having to limit input count, which also allows pcmbuf to
remain fuller and safely set its own buffer limits as it sees fit.
There is no longer a need to query input/output counts given a certain
number of input samples; just give it the sizes of the source and
destination buffers.

Works in harmony with stages that are not deterministic in terms of
sample input/output ratio (like both resamplers but most notably
the timestretch). As a result it fixes quirks with timestretch hanging
up with certain settings and it now operates properly throughout its
full settings range.
Change-Id: Ib206ec78f6f6c79259c5af9009fe021d68be9734
Reviewed-on: http://gerrit.rockbox.org/200
Reviewed-by: Michael Sevakis 
Tested-by: Michael Sevakis

Change the thread api a bit.

2011-03-05T17:48:06+00:00

* Remove THREAD_ID_CURRENT macro in favor of a thread_self() function, this allows thread functions to be simpler.
* thread_self_entry() shortcut for kernel.c.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29521 a1c6a512-1295-4272-9138-f99709370657

Put illustrative switch case back, because it clarifies intention...maybe ;).

2011-01-07T05:30:22+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28985 a1c6a512-1295-4272-9138-f99709370657

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.

2011-01-07T05:17:28+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28984 a1c6a512-1295-4272-9138-f99709370657

Make disabling HAVE_PITCHSCREEN actually work without breaking the build

2010-09-17T20:28:47+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28102 a1c6a512-1295-4272-9138-f99709370657

mpegplayer mad: apply r27655 fix

2010-08-01T16:38:58+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27659 a1c6a512-1295-4272-9138-f99709370657

r27159 broke mpegplayer but not the mpa codec because its libmad init wasn't also updated to be compatible with the changes. Fix that.

2010-06-29T10:07:04+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27171 a1c6a512-1295-4272-9138-f99709370657