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gst/volume/gstvolume.c: memset buffers to zero if we get a GAP buffer. We usually see a buffer as one unit so let's h...
Original commit message from CVS: * gst/volume/gstvolume.c: (gst_volume_interface_supported), (gst_volume_base_init), (gst_volume_class_init), (volume_process_double), (volume_process_float), (volume_transform_ip), (plugin_init): memset buffers to zero if we get a GAP buffer. We usually see a buffer as one unit so let's handle it as one and don't care about volume changes while processing one buffer. Also clean up some stuff a bit.
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2 changed files with 47 additions and 27 deletions
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2008-03-21 Sebastian Dröge <slomo@circular-chaos.org>
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* gst/volume/gstvolume.c: (gst_volume_interface_supported),
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(gst_volume_base_init), (gst_volume_class_init),
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(volume_process_double), (volume_process_float),
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(volume_transform_ip), (plugin_init):
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memset buffers to zero if we get a GAP buffer. We usually see a
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buffer as one unit so let's handle it as one and don't care about
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volume changes while processing one buffer.
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Also clean up some stuff a bit.
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2008-03-21 Sebastian Dröge <slomo@circular-chaos.org>
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* gst/audioconvert/gstaudioconvert.c: (gst_audio_convert_init),
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@ -84,11 +84,6 @@
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#define GST_CAT_DEFAULT gst_volume_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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static const GstElementDetails volume_details = GST_ELEMENT_DETAILS ("Volume",
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"Filter/Effect/Audio",
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"Set volume on audio/raw streams",
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"Andy Wingo <wingo@pobox.com>");
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/* Filter signals and args */
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enum
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{
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@ -293,7 +288,7 @@ volume_update_real_volume (GstVolume * this)
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static gboolean
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gst_volume_interface_supported (GstImplementsInterface * iface, GType type)
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{
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g_assert (type == GST_TYPE_MIXER);
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g_return_val_if_fail (type == GST_TYPE_MIXER, FALSE);
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return TRUE;
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}
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@ -391,7 +386,9 @@ gst_volume_base_init (gpointer g_class)
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GstAudioFilterClass *filter_class = GST_AUDIO_FILTER_CLASS (g_class);
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GstCaps *caps;
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gst_element_class_set_details (element_class, &volume_details);
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gst_element_class_set_details_simple (element_class, "Volume",
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"Filter/Effect/Audio",
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"Set volume on audio/raw streams", "Andy Wingo <wingo@pobox.com>");
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caps = gst_caps_from_string (ALLOWED_CAPS);
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gst_audio_filter_class_add_pad_templates (filter_class, caps);
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@ -422,8 +419,6 @@ gst_volume_class_init (GstVolumeClass * klass)
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0.0, VOLUME_MAX_DOUBLE, 1.0,
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G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "volume", 0, "Volume gain");
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trans_class->transform_ip = GST_DEBUG_FUNCPTR (volume_transform_ip);
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filter_class->setup = GST_DEBUG_FUNCPTR (volume_setup);
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}
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@ -455,11 +450,6 @@ gst_volume_init (GstVolume * this, GstVolumeClass * g_class)
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gst_base_transform_set_gap_aware (GST_BASE_TRANSFORM (this), TRUE);
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}
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/* NOTE: although it might be tempting to have volume_process_mute() which uses
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* memset(bytes, 0, nbytes) for the vol=0 case, this has the downside that
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* unmuting would only take place after processing a buffer.
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*/
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static void
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volume_process_double (GstVolume * this, gpointer bytes, guint n_bytes)
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{
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@ -471,6 +461,8 @@ volume_process_double (GstVolume * this, gpointer bytes, guint n_bytes)
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oil_scalarmultiply_f64_ns (data, data, &vol, num_samples);
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#else
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gint i;
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for (i = 0; i < num_samples; i++) {
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*data++ *= this->real_vol_f;
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}
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@ -483,15 +475,16 @@ volume_process_float (GstVolume * this, gpointer bytes, guint n_bytes)
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gfloat *data = (gfloat *) bytes;
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guint num_samples = n_bytes / sizeof (gfloat);
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/*
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guint i;
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for (i = 0; i < num_samples; i++) {
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*data++ *= this->real_vol_f;
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}
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*/
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/* time gst-launch 2>/dev/null audiotestsrc wave=7 num-buffers=10000 ! audio/x-raw-float ! volume volume=1.5 ! fakesink
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* goes from 0m0.850s -> 0m0.717s with liboil
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#if 0
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guint i;
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for (i = 0; i < num_samples; i++) {
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*data++ *= this->real_vol_f;
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}
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/* time "gst-launch 2>/dev/null audiotestsrc wave=7 num-buffers=10000 ! audio/x-raw-float !
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* volume volume=1.5 ! fakesink" goes from 0m0.850s -> 0m0.717s with liboil
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*/
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#endif
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oil_scalarmultiply_f32_ns (data, data, &this->real_vol_f, num_samples);
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}
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@ -530,10 +523,22 @@ volume_process_int32_clamp (GstVolume * this, gpointer bytes, guint n_bytes)
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#if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
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#define get_unaligned_i24(_x) ( (((guint8*)_x)[0]) | ((((guint8*)_x)[1]) << 8) | ((((gint8*)_x)[2]) << 16) )
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#define write_unaligned_u24(_x,samp) do { *(_x)++ = samp & 0xFF; *(_x)++ = (samp >> 8) & 0xFF; *(_x)++ = (samp >> 16) & 0xFF; } while (0)
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#define write_unaligned_u24(_x,samp) \
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G_STMT_START { \
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*(_x)++ = samp & 0xFF; \
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*(_x)++ = (samp >> 8) & 0xFF; \
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*(_x)++ = (samp >> 16) & 0xFF; \
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} G_STMT_END
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#else /* BIG ENDIAN */
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#define get_unaligned_i24(_x) ( (((guint8*)_x)[2]) | ((((guint8*)_x)[1]) << 8) | ((((gint8*)_x)[0]) << 16) )
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#define write_unaligned_u24(_x,samp) do { *(_x)++ = (samp >> 16) & 0xFF; *(_x)++ = (samp >> 8) & 0xFF; *(_x)++ = samp & 0xFF; } while (0)
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#define write_unaligned_u24(_x,samp) \
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G_STMT_START { \
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*(_x)++ = (samp >> 16) & 0xFF; \
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*(_x)++ = (samp >> 8) & 0xFF; \
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*(_x)++ = samp & 0xFF; \
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} G_STMT_END
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#endif
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static void
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@ -709,10 +714,12 @@ volume_transform_ip (GstBaseTransform * base, GstBuffer * outbuf)
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GST_BUFFER_FLAG_IS_SET (outbuf, GST_BUFFER_FLAG_GAP))
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return GST_FLOW_OK;
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if (this->real_vol_f == 0.0)
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if (this->real_vol_f == 0.0) {
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this->silent_buffer = TRUE;
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this->process (this, GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
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memset (GST_BUFFER_DATA (outbuf), 0, GST_BUFFER_SIZE (outbuf));
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} else if (this->real_vol_f != 1.0) {
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this->process (this, GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
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}
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if (this->silent_buffer)
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GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_GAP);
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@ -799,6 +806,8 @@ plugin_init (GstPlugin * plugin)
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/* initialize gst controller library */
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gst_controller_init (NULL, NULL);
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "volume", 0, "Volume gain");
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return gst_element_register (plugin, "volume", GST_RANK_NONE,
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GST_TYPE_VOLUME);
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}
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