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Fundamentally rewrite much of the audio DSP.

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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 <jethead71@rockbox.org>
Tested-by: Michael Sevakis <jethead71@rockbox.org>
This commit is contained in:
Michael Sevakis 2012-03-27 19:52:15 -04:00
parent c9c1349773
commit c9bcbe202d
56 changed files with 4823 additions and 2998 deletions
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22
apps/plugin.h
View file

@ -153,12 +153,12 @@ void* plugin_get_buffer(size_t *buffer_size);
#define PLUGIN_MAGIC 0x526F634B /* RocK */
/* increase this every time the api struct changes */
#define PLUGIN_API_VERSION 218
#define PLUGIN_API_VERSION 219
/* update this to latest version if a change to the api struct breaks
backwards compatibility (and please take the opportunity to sort in any
new function which are "waiting" at the end of the function table) */
#define PLUGIN_MIN_API_VERSION 218
#define PLUGIN_MIN_API_VERSION 219
/* plugin return codes */
/* internal returns start at 0x100 to make exit(1..255) work */
@ -680,15 +680,17 @@ struct plugin_api {
void (*audio_set_output_source)(int monitor);
void (*audio_set_input_source)(int source, unsigned flags);
#endif
void (*dsp_set_crossfeed)(bool enable);
void (*dsp_set_eq)(bool enable);
void (*dsp_crossfeed_enable)(bool enable);
void (*dsp_eq_enable)(bool enable);
void (*dsp_dither_enable)(bool enable);
intptr_t (*dsp_configure)(struct dsp_config *dsp, int setting,
intptr_t value);
int (*dsp_process)(struct dsp_config *dsp, char *dest,
const char *src[], int count);
int (*dsp_input_count)(struct dsp_config *dsp, int count);
int (*dsp_output_count)(struct dsp_config *dsp, int count);
#ifdef HAVE_PITCHSCREEN
void (*dsp_set_timestretch)(int32_t percent);
#endif
intptr_t (*dsp_configure)(struct dsp_config *dsp,
unsigned int setting, intptr_t value);
struct dsp_config * (*dsp_get_config)(enum dsp_ids id);
void (*dsp_process)(struct dsp_config *dsp, struct dsp_buffer *src,
struct dsp_buffer *dst);
enum channel_status (*mixer_channel_status)(enum pcm_mixer_channel channel);
const void * (*mixer_channel_get_buffer)(enum pcm_mixer_channel channel,