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audio-converter: improve API for non-interleaved formats

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Make it possible to pass an array of sample blocks when dealing with
non-interleaved formats.
This commit is contained in:
Wim Taymans 2015-12-10 16:26:40 +01:00
parent 055ed65d92
commit aec17c63fd
2 changed files with 33 additions and 23 deletions
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52
gst-libs/gst/audio/audio-converter.c
View file

@ -384,6 +384,12 @@ gst_audio_converter_free (GstAudioConverter * convert)
* Perform the conversion with @in_samples in @in to @out_samples in @out
* using @convert.
*
* In case the samples are interleaved, @in and @out must point to an
* array with a single element pointing to a block of interleaved samples.
*
* If non-interleaved samples are used, @in and @out must point to an
* array with pointers to memory blocks, one for each channel.
*
* The actual number of samples used from @in is returned in @in_consumed and
* can be less than @in_samples. The actual number of samples produced is
* returned in @out_produced and can be less than @out_samples.
@ -392,11 +398,12 @@ gst_audio_converter_free (GstAudioConverter * convert)
*/
gboolean
gst_audio_converter_samples (GstAudioConverter * convert,
GstAudioConverterFlags flags, gpointer in, gsize in_samples,
gpointer out, gsize out_samples, gsize * in_consumed, gsize * out_produced)
GstAudioConverterFlags flags, gpointer in[], gsize in_samples,
gpointer out[], gsize out_samples, gsize * in_consumed,
gsize * out_produced)
{
guint size;
gpointer outbuf, tmpbuf, tmpbuf2;
gpointer outbuf, tmpbuf, tmpbuf2, inp, outp;
g_return_val_if_fail (convert != NULL, FALSE);
g_return_val_if_fail (in != NULL, FALSE);
@ -412,8 +419,11 @@ gst_audio_converter_samples (GstAudioConverter * convert,
return TRUE;
}
inp = in[0];
outp = out[0];
if (convert->passthrough) {
memcpy (out, in, in_samples * convert->in.bpf);
memcpy (outp, inp, in_samples * convert->in.bpf);
*out_produced = in_samples;
*in_consumed = in_samples;
return TRUE;
@ -435,65 +445,65 @@ gst_audio_converter_samples (GstAudioConverter * convert,
if (!convert->in_default) {
if (!convert->convert_in && convert->mix_passthrough
&& !convert->convert_out && !convert->quant && convert->out_default)
outbuf = out;
outbuf = outp;
else
outbuf = tmpbuf;
convert->in.finfo->unpack_func (convert->in.finfo,
GST_AUDIO_PACK_FLAG_TRUNCATE_RANGE, outbuf, in,
GST_AUDIO_PACK_FLAG_TRUNCATE_RANGE, outbuf, inp,
in_samples * convert->in.channels);
in = outbuf;
inp = outbuf;
}
/* 2. optionally convert for mixing */
if (convert->convert_in) {
if (convert->mix_passthrough && !convert->convert_out && !convert->quant
&& convert->out_default)
outbuf = out;
else if (in == tmpbuf)
outbuf = outp;
else if (inp == tmpbuf)
outbuf = tmpbuf2;
else
outbuf = tmpbuf;
convert->convert_in (outbuf, in, in_samples * convert->in.channels);
in = outbuf;
convert->convert_in (outbuf, inp, in_samples * convert->in.channels);
inp = outbuf;
}
/* step 3, channel mix if not passthrough */
if (!convert->mix_passthrough) {
if (!convert->convert_out && !convert->quant && convert->out_default)
outbuf = out;
outbuf = outp;
else
outbuf = tmpbuf;
gst_audio_channel_mix_samples (convert->mix, in, outbuf, in_samples);
in = outbuf;
gst_audio_channel_mix_samples (convert->mix, inp, outbuf, in_samples);
inp = outbuf;
}
/* step 4, optional convert F64 -> S32 for quantize */
if (convert->convert_out) {
if (!convert->quant && convert->out_default)
outbuf = out;
outbuf = outp;
else
outbuf = tmpbuf;
convert->convert_out (outbuf, in, in_samples * convert->out.channels);
in = outbuf;
convert->convert_out (outbuf, inp, in_samples * convert->out.channels);
inp = outbuf;
}
/* step 5, optional quantize */
if (convert->quant) {
if (convert->out_default)
outbuf = out;
outbuf = outp;
else
outbuf = tmpbuf;
gst_audio_quantize_samples (convert->quant, outbuf, in, in_samples);
in = outbuf;
gst_audio_quantize_samples (convert->quant, outbuf, inp, in_samples);
inp = outbuf;
}
/* step 6, pack */
if (!convert->out_default) {
convert->out.finfo->pack_func (convert->out.finfo, 0, in, out,
convert->out.finfo->pack_func (convert->out.finfo, 0, inp, outp,
in_samples * convert->out.channels);
}
*out_produced = in_samples;

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

@ -81,8 +81,8 @@ const GstStructure * gst_audio_converter_get_config (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_samples,
gpointer out[], gsize out_samples,
gsize *in_consumed, gsize *out_produced);
#endif /* __GST_AUDIO_CONVERTER_H__ */