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audioconvert: Don't map the input buffer in in-place mode

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Input and output buffer are the same, let's not do unnecessary work.

https://bugzilla.gnome.org/show_bug.cgi?id=775369
This commit is contained in:
Sebastian Dröge 2016-11-30 10:48:40 +02:00
parent 71e819ae7d
commit 1e64800278
1 changed files with 18 additions and 11 deletions
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29
gst/audioconvert/gstaudioconvert.c
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@ -709,7 +709,7 @@ gst_audio_convert_transform (GstBaseTransform * base, GstBuffer * inbuf,
{
GstFlowReturn ret;
GstAudioConvert *this = GST_AUDIO_CONVERT (base);
GstMapInfo srcmap, dstmap;
GstMapInfo srcmap = { NULL, }, dstmap;
gint insize, outsize;
gboolean inbuf_writable;
GstAudioConverterFlags flags;
@ -726,18 +726,24 @@ gst_audio_convert_transform (GstBaseTransform * base, GstBuffer * inbuf,
if (insize == 0 || outsize == 0)
return GST_FLOW_OK;
inbuf_writable = gst_buffer_is_writable (inbuf)
&& gst_buffer_n_memory (inbuf) == 1
&& gst_memory_is_writable (gst_buffer_peek_memory (inbuf, 0));
/* get src and dst data */
gst_buffer_map (inbuf, &srcmap,
inbuf_writable ? GST_MAP_READWRITE : GST_MAP_READ);
if (inbuf != outbuf) {
inbuf_writable = gst_buffer_is_writable (inbuf)
&& gst_buffer_n_memory (inbuf) == 1
&& gst_memory_is_writable (gst_buffer_peek_memory (inbuf, 0));
gst_buffer_map (inbuf, &srcmap,
inbuf_writable ? GST_MAP_READWRITE : GST_MAP_READ);
} else {
inbuf_writable = TRUE;
}
gst_buffer_map (outbuf, &dstmap, GST_MAP_WRITE);
/* check in and outsize */
if (srcmap.size < insize)
goto wrong_size;
if (inbuf != outbuf) {
if (srcmap.size < insize)
goto wrong_size;
}
if (dstmap.size < outsize)
goto wrong_size;
@ -751,7 +757,7 @@ gst_audio_convert_transform (GstBaseTransform * base, GstBuffer * inbuf,
gpointer out[1] = { dstmap.data };
if (!gst_audio_converter_samples (this->convert, flags,
in, samples, out, samples))
inbuf != outbuf ? in : out, samples, out, samples))
goto convert_error;
} else {
/* Create silence buffer */
@ -761,7 +767,8 @@ gst_audio_convert_transform (GstBaseTransform * base, GstBuffer * inbuf,
done:
gst_buffer_unmap (outbuf, &dstmap);
gst_buffer_unmap (inbuf, &srcmap);
if (inbuf != outbuf)
gst_buffer_unmap (inbuf, &srcmap);
return ret;