diff options
author | Sebastian Dröge <slomo@circular-chaos.org> | 2007-01-13 15:52:18 +0000 |
---|---|---|
committer | Tim-Philipp Müller <tim@centricular.net> | 2007-01-13 15:52:18 +0000 |
commit | 22ebbb6912871ea757e82f540a0e10295e81bd33 (patch) | |
tree | 0fdd661fadb73c0723d1380167351b615697a033 /gst/audiofx | |
parent | 3a4c011aa6ddfb794be2b65503598cd57f44cc7f (diff) |
gst/audiofx/audiopanorama.*: Add 'method' property and provide a simple (non-psychoacustic) processing method (#394859).
Original commit message from CVS:
Patch by: Sebastian Dröge <slomo circular-chaos org>
* gst/audiofx/audiopanorama.c:
(gst_audio_panorama_method_get_type),
(gst_audio_panorama_class_init), (gst_audio_panorama_init),
(gst_audio_panorama_set_process_function),
(gst_audio_panorama_set_property),
(gst_audio_panorama_get_property), (gst_audio_panorama_set_caps),
(gst_audio_panorama_transform_m2s_int_simple),
(gst_audio_panorama_transform_s2s_int_simple),
(gst_audio_panorama_transform_m2s_float_simple),
(gst_audio_panorama_transform_s2s_float_simple):
* gst/audiofx/audiopanorama.h:
Add 'method' property and provide a simple (non-psychoacustic)
processing method (#394859).
* tests/check/elements/audiopanorama.c: (GST_START_TEST),
(panorama_suite):
Tests for new method.
Diffstat (limited to 'gst/audiofx')
-rw-r--r-- | gst/audiofx/audiopanorama.c | 257 | ||||
-rw-r--r-- | gst/audiofx/audiopanorama.h | 3 |
2 files changed, 229 insertions, 31 deletions
diff --git a/gst/audiofx/audiopanorama.c b/gst/audiofx/audiopanorama.c index 71924e6b..c0d76952 100644 --- a/gst/audiofx/audiopanorama.c +++ b/gst/audiofx/audiopanorama.c @@ -1,6 +1,7 @@ /* * GStreamer * Copyright (C) 2006 Stefan Kost <ensonic@users.sf.net> + * Copyright (C) 2006 Sebastian Dröge <slomo@circular-chaos.org> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -23,13 +24,15 @@ * @short_description: audio stereo pan effect * * <refsect2> - * Stereo panorama effect with controllable pan position. + * Stereo panorama effect with controllable pan position. One can choose between the default psychoacoustic panning method, + * which keeps the same perceived loudness, and a simple panning method that just controls the volume on one channel. * <title>Example launch line</title> * <para> * <programlisting> * gst-launch audiotestsrc wave=saw ! audiopanorama panorama=-1.00 ! alsasink * gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiopanorama panorama=-1.00 ! alsasink * gst-launch audiotestsrc wave=saw ! audioconvert ! audiopanorama panorama=-1.00 ! audioconvert ! alsasink + * gst-launch audiotestsrc wave=saw ! audioconvert ! audiopanorama method=simple panorama=-0.50 ! audioconvert ! alsasink * </programlisting> * </para> * </refsect2> @@ -64,9 +67,35 @@ enum enum { PROP_0, - PROP_PANORAMA + PROP_PANORAMA, + PROP_METHOD }; +enum +{ + METHOD_PSYCHOACOUSTIC, + METHOD_SIMPLE +}; + +#define GST_TYPE_AUDIO_PANORAMA_METHOD (gst_audio_panorama_method_get_type ()) +static GType +gst_audio_panorama_method_get_type (void) +{ + static GType gtype = 0; + + if (gtype == 0) { + static const GEnumValue values[] = { + {METHOD_PSYCHOACOUSTIC, "Psychoacoustic Panning (default)", + "psychoacoustic"}, + {METHOD_SIMPLE, "Simple Panning", "simple"}, + {0, NULL, NULL} + }; + + gtype = g_enum_register_static ("GstAudioPanoramaMethod", values); + } + return gtype; +} + static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, @@ -122,6 +151,15 @@ static void gst_audio_panorama_transform_m2s_float (GstAudioPanorama * filter, static void gst_audio_panorama_transform_s2s_float (GstAudioPanorama * filter, gfloat * idata, gfloat * odata, guint num_samples); +static void gst_audio_panorama_transform_m2s_int_simple (GstAudioPanorama * + filter, gint16 * idata, gint16 * odata, guint num_samples); +static void gst_audio_panorama_transform_s2s_int_simple (GstAudioPanorama * + filter, gint16 * idata, gint16 * odata, guint num_samples); +static void gst_audio_panorama_transform_m2s_float_simple (GstAudioPanorama * + filter, gfloat * idata, gfloat * odata, guint num_samples); +static void gst_audio_panorama_transform_s2s_float_simple (GstAudioPanorama * + filter, gfloat * idata, gfloat * odata, guint num_samples); + static GstFlowReturn gst_audio_panorama_transform (GstBaseTransform * base, GstBuffer * inbuf, GstBuffer * outbuf); @@ -152,6 +190,20 @@ gst_audio_panorama_class_init (GstAudioPanoramaClass * klass) g_param_spec_float ("panorama", "Panorama", "Position in stereo panorama (-1.0 left -> 1.0 right)", -1.0, 1.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE)); + /** + * GstAudioPanorama:method + * + * Panning method: psychoacoustic mode keeps the same perceived loudness, + * while simple mode just controls the volume of one channel. + * + * Since: 0.10.6 + **/ + g_object_class_install_property (gobject_class, PROP_METHOD, + g_param_spec_enum ("method", "Panning method", + "Psychoacoustic mode keeps same perceived loudness, " + "simple mode just controls volume of one channel.", + GST_TYPE_AUDIO_PANORAMA_METHOD, METHOD_PSYCHOACOUSTIC, + G_PARAM_READWRITE)); GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size = GST_DEBUG_FUNCPTR (gst_audio_panorama_get_unit_size); @@ -168,7 +220,67 @@ gst_audio_panorama_init (GstAudioPanorama * filter, GstAudioPanoramaClass * klass) { filter->panorama = 0; + filter->method = METHOD_PSYCHOACOUSTIC; filter->width = 0; + filter->channels = 0; + filter->format_float = FALSE; + filter->process = NULL; +} + +static gboolean +gst_audio_panorama_set_process_function (GstAudioPanorama * filter) +{ + gboolean ret; + + /* set processing function */ + switch (filter->channels) { + case 1: + if (!filter->format_float) { + if (filter->method == METHOD_SIMPLE) { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_m2s_int_simple; + } else { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_m2s_int; + } + } else { + if (filter->method == METHOD_SIMPLE) { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_m2s_float_simple; + } else { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_m2s_float; + } + } + ret = TRUE; + break; + case 2: + if (!filter->format_float) { + if (filter->method == METHOD_SIMPLE) { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_s2s_int_simple; + } else { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_s2s_int; + } + } else { + if (filter->method == METHOD_SIMPLE) { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_s2s_float_simple; + } else { + filter->process = (GstAudioPanoramaProcessFunc) + gst_audio_panorama_transform_s2s_float; + } + } + ret = TRUE; + break; + default: + ret = FALSE; + filter->process = NULL; + break; + } + + return ret; } static void @@ -181,6 +293,10 @@ gst_audio_panorama_set_property (GObject * object, guint prop_id, case PROP_PANORAMA: filter->panorama = g_value_get_float (value); break; + case PROP_METHOD: + filter->method = g_value_get_enum (value); + gst_audio_panorama_set_process_function (filter); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; @@ -197,6 +313,9 @@ gst_audio_panorama_get_property (GObject * object, guint prop_id, case PROP_PANORAMA: g_value_set_float (value, filter->panorama); break; + case PROP_METHOD: + g_value_set_enum (value, filter->method); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; @@ -254,13 +373,13 @@ gst_audio_panorama_set_caps (GstBaseTransform * base, GstCaps * incaps, GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base); const GstStructure *structure; gboolean ret; - gint channels, width; + gint width; const gchar *fmt; /*GST_INFO ("incaps are %" GST_PTR_FORMAT, incaps); */ structure = gst_caps_get_structure (incaps, 0); - ret = gst_structure_get_int (structure, "channels", &channels); + ret = gst_structure_get_int (structure, "channels", &filter->channels); if (!ret) goto no_channels; @@ -269,36 +388,19 @@ gst_audio_panorama_set_caps (GstBaseTransform * base, GstCaps * incaps, goto no_width; filter->width = width / 8; - fmt = gst_structure_get_name (structure); + if (!strcmp (fmt, "audio/x-raw-int")) + filter->format_float = FALSE; + else + filter->format_float = TRUE; - GST_DEBUG ("try to process %s input with %d channels", fmt, channels); + GST_DEBUG ("try to process %s input with %d channels", fmt, filter->channels); + + ret = gst_audio_panorama_set_process_function (filter); + + if (!ret) + GST_WARNING ("can't process input with %d channels", filter->channels); - /* set processing function */ - switch (channels) { - case 1: - if (!strcmp (fmt, "audio/x-raw-int")) - filter->process = (GstAudioPanoramaProcessFunc) - gst_audio_panorama_transform_m2s_int; - else - filter->process = (GstAudioPanoramaProcessFunc) - gst_audio_panorama_transform_m2s_float; - ret = TRUE; - break; - case 2: - if (!strcmp (fmt, "audio/x-raw-int")) - filter->process = (GstAudioPanoramaProcessFunc) - gst_audio_panorama_transform_s2s_int; - else - filter->process = (GstAudioPanoramaProcessFunc) - gst_audio_panorama_transform_s2s_float; - ret = TRUE; - break; - default: - filter->process = NULL; - ret = FALSE; - GST_WARNING ("can't process input with %d channels", channels); - } return ret; no_channels: @@ -309,6 +411,7 @@ no_width: return ret; } +/* psychoacoustic processing functions */ static void gst_audio_panorama_transform_m2s_int (GstAudioPanorama * filter, gint16 * idata, gint16 * odata, guint num_samples) @@ -437,6 +540,98 @@ gst_audio_panorama_transform_s2s_float (GstAudioPanorama * filter, } } +/* simple processing functions */ +static void +gst_audio_panorama_transform_m2s_int_simple (GstAudioPanorama * filter, + gint16 * idata, gint16 * odata, guint num_samples) +{ + guint i; + gdouble val; + glong lval, rval; + + for (i = 0; i < num_samples; i++) { + val = (gdouble) * idata++; + + if (filter->panorama > 0.0) { + lval = (glong) (val * (1.0 - filter->panorama)); + rval = (glong) val; + } else { + lval = (glong) val; + rval = (glong) (val * (1.0 + filter->panorama)); + } + + *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16); + *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16); + } +} + +static void +gst_audio_panorama_transform_s2s_int_simple (GstAudioPanorama * filter, + gint16 * idata, gint16 * odata, guint num_samples) +{ + guint i; + glong lval, rval; + gdouble lival, rival; + + for (i = 0; i < num_samples; i++) { + lival = (gdouble) * idata++; + rival = (gdouble) * idata++; + + if (filter->panorama > 0.0) { + lval = (glong) (lival * (1.0 - filter->panorama)); + rval = (glong) rival; + } else { + lval = (glong) lival; + rval = (glong) (rival * (1.0 + filter->panorama)); + } + + *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16); + *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16); + } +} + +static void +gst_audio_panorama_transform_m2s_float_simple (GstAudioPanorama * filter, + gfloat * idata, gfloat * odata, guint num_samples) +{ + guint i; + gfloat val; + + + for (i = 0; i < num_samples; i++) { + val = *idata++; + + if (filter->panorama > 0.0) { + *odata++ = val * (1.0 - filter->panorama); + *odata++ = val; + } else { + *odata++ = val; + *odata++ = val * (1.0 + filter->panorama); + } + } +} + +static void +gst_audio_panorama_transform_s2s_float_simple (GstAudioPanorama * filter, + gfloat * idata, gfloat * odata, guint num_samples) +{ + guint i; + gfloat lival, rival; + + for (i = 0; i < num_samples; i++) { + lival = *idata++; + rival = *idata++; + + if (filter->panorama > 0.0) { + *odata++ = lival * (1.0 - filter->panorama); + *odata++ = rival; + } else { + *odata++ = lival; + *odata++ = rival * (1.0 + filter->panorama); + } + } +} + /* this function does the actual processing */ static GstFlowReturn diff --git a/gst/audiofx/audiopanorama.h b/gst/audiofx/audiopanorama.h index eaa9927b..b3cd1830 100644 --- a/gst/audiofx/audiopanorama.h +++ b/gst/audiofx/audiopanorama.h @@ -45,7 +45,10 @@ struct _GstAudioPanorama { /* < private > */ GstAudioPanoramaProcessFunc process; + gint channels; + gboolean format_float; gint width; + gint method; }; struct _GstAudioPanoramaClass { |