mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-10-06 10:42:22 +00:00
Code Issues 1 Projects Releases Wiki Activity

audio-converter: audio-converter: make some optimized functions

Browse source 
Make optimized functions for generic and passthrough conversion.
This commit is contained in:
Wim Taymans 2016-01-26 17:14:20 +01:00
parent cde091ae81
commit 0f757bc23c
2 changed files with 77 additions and 54 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

127
gst-libs/gst/audio/audio-converter.c
View file

@ -77,6 +77,10 @@ ensure_debug_category (void)
typedef struct _AudioChain AudioChain;
typedef void (*AudioConvertFunc) (gpointer dst, const gpointer src, gint count);
typedef gboolean (*AudioConvertSamplesFunc) (GstAudioConverter * convert,
GstAudioConverterFlags flags, gpointer in[], gsize in_frames,
gpointer out[], gsize out_frames);
/* int/int int/float float/int float/float
*
* unpack S32 S32 F64 F64
@ -105,9 +109,9 @@ struct _GstAudioConverter
gboolean in_writable;
gpointer *in_data;
gsize in_samples;
gsize in_frames;
gpointer *out_data;
gsize out_samples;
gsize out_frames;
/* unpack */
gboolean in_default;
@ -135,7 +139,7 @@ struct _GstAudioConverter
gboolean out_default;
AudioChain *pack_chain;
gboolean passthrough;
AudioConvertSamplesFunc convert;
};
typedef gboolean (*AudioChainFunc) (AudioChain * chain, gpointer user_data);
@ -404,7 +408,7 @@ do_unpack (AudioChain * chain, gpointer user_data)
gboolean in_writable;
in_writable = convert->in_writable;
num_samples = convert->in_samples;
num_samples = convert->in_frames;
if (!chain->allow_ip || !in_writable || !convert->in_default) {
gint i;
@ -733,6 +737,59 @@ setup_allocators (GstAudioConverter * convert)
}
}
static gboolean
converter_passthrough (GstAudioConverter * convert,
GstAudioConverterFlags flags, gpointer in[], gsize in_frames,
gpointer out[], gsize out_frames)
{
gint i;
gsize bytes;
AudioChain *chain;
chain = convert->pack_chain;
bytes = in_frames * chain->inc * (convert->in.bpf / convert->in.channels);
GST_LOG ("passthrough: %" G_GSIZE_FORMAT " / %" G_GSIZE_FORMAT " bytes",
in_frames, bytes);
for (i = 0; i < chain->blocks; i++)
memcpy (out[i], in[i], bytes);
return TRUE;
}
static gboolean
converter_generic (GstAudioConverter * convert,
GstAudioConverterFlags flags, gpointer in[], gsize in_frames,
gpointer out[], gsize out_frames)
{
AudioChain *chain;
gpointer *tmp;
gint i;
gsize produced;
chain = convert->pack_chain;
convert->in_writable = flags & GST_AUDIO_CONVERTER_FLAG_IN_WRITABLE;
convert->in_data = in;
convert->in_frames = in_frames;
convert->out_data = out;
convert->out_frames = out_frames;
/* get frames to pack */
tmp = audio_chain_get_samples (chain, &produced);
if (!convert->out_default) {
GST_LOG ("pack %p, %p %" G_GSIZE_FORMAT, tmp, out, produced);
/* and pack if needed */
for (i = 0; i < chain->blocks; i++)
convert->out.finfo->pack_func (convert->out.finfo, 0, tmp[i], out[i],
produced * chain->inc);
}
return TRUE;
}
/**
* gst_audio_converter_new: (skip)
* @flags: #GstAudioConverterFlags
@ -796,7 +853,10 @@ gst_audio_converter_new (GstAudioConverterFlags flags, GstAudioInfo * in_info,
if (out_info->finfo->format == in_info->finfo->format
&& convert->mix_passthrough) {
GST_INFO ("same formats and passthrough mixing -> passthrough");
convert->passthrough = TRUE;
convert->convert = converter_passthrough;
} else {
GST_INFO ("do full conversion");
convert->convert = converter_generic;
}
setup_allocators (convert);
@ -899,12 +959,12 @@ gst_audio_converter_get_max_latency (GstAudioConverter * convert)
* gst_audio_converter_samples:
* @convert: a #GstAudioConverter
* @flags: extra #GstAudioConverterFlags
* @in: input samples
* @in_samples: number of input samples
* @out: output samples
* @out_samples: number of output samples
* @in: input frames
* @in_frames: number of input frames
* @out: output frames
* @out_frames: number of output frames
*
* Perform the conversion with @in_samples in @in to @out_samples in @out
* Perform the conversion with @in_frames in @in to @out_frames in @out
* using @convert.
*
* In case the samples are interleaved, @in and @out must point to an
@ -922,55 +982,18 @@ gst_audio_converter_get_max_latency (GstAudioConverter * convert)
*/
gboolean
gst_audio_converter_samples (GstAudioConverter * convert,
GstAudioConverterFlags flags, gpointer in[], gsize in_samples,
gpointer out[], gsize out_samples)
GstAudioConverterFlags flags, gpointer in[], gsize in_frames,
gpointer out[], gsize out_frames)
{
AudioChain *chain;
gpointer *tmp;
gint i;
gsize produced;
g_return_val_if_fail (convert != NULL, FALSE);
g_return_val_if_fail (in != NULL, FALSE);
g_return_val_if_fail (out != NULL, FALSE);
in_samples = MIN (in_samples, out_samples);
in_frames = MIN (in_frames, out_frames);
if (in_samples == 0) {
if (in_frames == 0) {
GST_LOG ("skipping empty buffer");
return TRUE;
}
chain = convert->pack_chain;
if (convert->passthrough) {
gsize bytes = in_samples * chain->inc *
(convert->in.bpf / convert->in.channels);
GST_LOG ("passthrough: %" G_GSIZE_FORMAT " / %" G_GSIZE_FORMAT " bytes",
in_samples, bytes);
for (i = 0; i < chain->blocks; i++)
memcpy (out[i], in[i], bytes);
return TRUE;
}
GST_LOG ("converting %p %p %" G_GSIZE_FORMAT, in, out, in_samples);
convert->in_writable = flags & GST_AUDIO_CONVERTER_FLAG_IN_WRITABLE;
convert->in_data = in;
convert->in_samples = in_samples;
convert->out_data = out;
convert->out_samples = out_samples;
/* get samples to pack */
tmp = audio_chain_get_samples (chain, &produced);
if (!convert->out_default) {
GST_LOG ("pack %p, %p %" G_GSIZE_FORMAT, tmp, out, produced);
/* and pack if needed */
for (i = 0; i < chain->blocks; i++)
convert->out.finfo->pack_func (convert->out.finfo, 0, tmp[i], out[i],
produced * chain->inc);
}
return TRUE;
return convert->convert (convert, flags, in, in_frames, out, out_frames);
}

4
gst-libs/gst/audio/audio-converter.h
View file

@ -95,7 +95,7 @@ gsize gst_audio_converter_get_max_latency (GstAudioConverter *con
gboolean gst_audio_converter_samples (GstAudioConverter * convert,
GstAudioConverterFlags flags,
gpointer in[], gsize in_samples,
gpointer out[], gsize out_samples);
gpointer in[], gsize in_frames,
gpointer out[], gsize out_frames);
#endif /* __GST_AUDIO_CONVERTER_H__ */