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-rw-r--r--gst/audioresample/gstaudioresample.c154
-rw-r--r--gst/audioresample/gstaudioresample.h10
2 files changed, 95 insertions, 69 deletions
diff --git a/gst/audioresample/gstaudioresample.c b/gst/audioresample/gstaudioresample.c
index e907dbfa..1a49484a 100644
--- a/gst/audioresample/gstaudioresample.c
+++ b/gst/audioresample/gstaudioresample.c
@@ -19,6 +19,25 @@
*/
/* Element-Checklist-Version: 5 */
+/**
+ * SECTION:element-audioresample
+ *
+ * <refsect2>
+ * Audioresample resamples raw audio buffers to different sample rates using
+ * a configurable windowing function to enhance quality.
+ * <title>Example launch line</title>
+ * <para>
+ * <programlisting>
+ * gst-launch -v filesrc location=sine.ogg ! oggdemux ! vorbisdec ! audioconvert ! audioresample ! audio/x-raw-int, rate=8000 ! alsasink
+ * </programlisting>
+ * Decode an Ogg/Vorbis downsample to 8Khz and play sound through alsa.
+ * To create the Ogg/Vorbis file refer to the documentation of vorbisenc.
+ * </para>
+ * </refsect2>
+ *
+ * Last reviewed on 2006-03-02 (0.10.4)
+ */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@@ -52,8 +71,8 @@ enum
enum
{
- ARG_0,
- ARG_FILTERLEN
+ PROP_0,
+ PROP_FILTERLEN
};
#define SUPPORTED_CAPS \
@@ -72,39 +91,38 @@ GST_STATIC_CAPS ( \
"audio/x-raw-float, "
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, MAX ], "
- "endianness = (int) BYTE_ORDER, " "width = (int) 32")
+ "endianness = (int) BYTE_ORDER, " "width = (int) 32"
#endif
- static GstStaticPadTemplate gst_audioresample_sink_template =
- GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK, GST_PAD_ALWAYS, SUPPORTED_CAPS);
+static GstStaticPadTemplate gst_audioresample_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK, GST_PAD_ALWAYS, SUPPORTED_CAPS);
- static GstStaticPadTemplate gst_audioresample_src_template =
- GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC, GST_PAD_ALWAYS, SUPPORTED_CAPS);
+static GstStaticPadTemplate gst_audioresample_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC, GST_PAD_ALWAYS, SUPPORTED_CAPS);
- static void gst_audioresample_dispose (GObject * object);
+static void gst_audioresample_dispose (GObject * object);
- static void gst_audioresample_set_property (GObject * object,
- guint prop_id, const GValue * value, GParamSpec * pspec);
- static void gst_audioresample_get_property (GObject * object,
- guint prop_id, GValue * value, GParamSpec * pspec);
+static void gst_audioresample_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_audioresample_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
/* vmethods */
- gboolean audioresample_get_unit_size (GstBaseTransform * base,
- GstCaps * caps, guint * size);
- GstCaps *audioresample_transform_caps (GstBaseTransform * base,
- GstPadDirection direction, GstCaps * caps);
- gboolean audioresample_transform_size (GstBaseTransform * trans,
- GstPadDirection direction, GstCaps * incaps, guint insize,
- GstCaps * outcaps, guint * outsize);
- gboolean audioresample_set_caps (GstBaseTransform * base, GstCaps * incaps,
- GstCaps * outcaps);
- static GstFlowReturn audioresample_pushthrough (GstAudioresample *
- audioresample);
- static GstFlowReturn audioresample_transform (GstBaseTransform * base,
- GstBuffer * inbuf, GstBuffer * outbuf);
- static gboolean audioresample_event (GstBaseTransform * base,
- GstEvent * event);
+gboolean audioresample_get_unit_size (GstBaseTransform * base,
+ GstCaps * caps, guint * size);
+GstCaps *audioresample_transform_caps (GstBaseTransform * base,
+ GstPadDirection direction, GstCaps * caps);
+gboolean audioresample_transform_size (GstBaseTransform * trans,
+ GstPadDirection direction, GstCaps * incaps, guint insize,
+ GstCaps * outcaps, guint * outsize);
+gboolean audioresample_set_caps (GstBaseTransform * base, GstCaps * incaps,
+ GstCaps * outcaps);
+static GstFlowReturn audioresample_pushthrough (GstAudioresample *
+ audioresample);
+static GstFlowReturn audioresample_transform (GstBaseTransform * base,
+ GstBuffer * inbuf, GstBuffer * outbuf);
+static gboolean audioresample_event (GstBaseTransform * base, GstEvent * event);
/*static guint gst_audioresample_signals[LAST_SIGNAL] = { 0 }; */
@@ -114,20 +132,21 @@ GST_STATIC_CAPS ( \
GST_BOILERPLATE_FULL (GstAudioresample, gst_audioresample, GstBaseTransform,
GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
- static void gst_audioresample_base_init (gpointer g_class)
- {
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+static void
+gst_audioresample_base_init (gpointer g_class)
+{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&gst_audioresample_src_template));
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&gst_audioresample_sink_template));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&gst_audioresample_src_template));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&gst_audioresample_sink_template));
- gst_element_class_set_details (gstelement_class,
- &gst_audioresample_details);
- }
+ gst_element_class_set_details (gstelement_class, &gst_audioresample_details);
+}
-static void gst_audioresample_class_init (GstAudioresampleClass * klass)
+static void
+gst_audioresample_class_init (GstAudioresampleClass * klass)
{
GObjectClass *gobject_class;
@@ -137,7 +156,7 @@ static void gst_audioresample_class_init (GstAudioresampleClass * klass)
gobject_class->get_property = gst_audioresample_get_property;
gobject_class->dispose = gst_audioresample_dispose;
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FILTERLEN,
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILTERLEN,
g_param_spec_int ("filter_length", "filter_length", "filter_length",
0, G_MAXINT, DEFAULT_FILTERLEN,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
@@ -159,7 +178,7 @@ static void gst_audioresample_class_init (GstAudioresampleClass * klass)
}
static void
- gst_audioresample_init (GstAudioresample * audioresample,
+gst_audioresample_init (GstAudioresample * audioresample,
GstAudioresampleClass * klass)
{
ResampleState *r;
@@ -181,7 +200,8 @@ static void
resample_set_format (r, RESAMPLE_FORMAT_S16);
}
-static void gst_audioresample_dispose (GObject * object)
+static void
+gst_audioresample_dispose (GObject * object)
{
GstAudioresample *audioresample = GST_AUDIORESAMPLE (object);
@@ -195,8 +215,9 @@ static void gst_audioresample_dispose (GObject * object)
/* vmethods */
gboolean
- audioresample_get_unit_size (GstBaseTransform * base, GstCaps * caps,
- guint * size) {
+audioresample_get_unit_size (GstBaseTransform * base, GstCaps * caps,
+ guint * size)
+{
gint width, channels;
GstStructure *structure;
gboolean ret;
@@ -214,7 +235,8 @@ gboolean
return TRUE;
}
-GstCaps *audioresample_transform_caps (GstBaseTransform * base,
+GstCaps *
+audioresample_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps)
{
GstCaps *res;
@@ -230,7 +252,7 @@ GstCaps *audioresample_transform_caps (GstBaseTransform * base,
}
static gboolean
- resample_set_state_from_caps (ResampleState * state, GstCaps * incaps,
+resample_set_state_from_caps (ResampleState * state, GstCaps * incaps,
GstCaps * outcaps, gint * channels, gint * inrate, gint * outrate)
{
GstStructure *structure;
@@ -275,9 +297,10 @@ static gboolean
}
gboolean
- audioresample_transform_size (GstBaseTransform * base,
+audioresample_transform_size (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps, guint size, GstCaps * othercaps,
- guint * othersize) {
+ guint * othersize)
+{
GstAudioresample *audioresample = GST_AUDIORESAMPLE (base);
ResampleState *state;
GstCaps *srccaps, *sinkcaps;
@@ -329,8 +352,9 @@ gboolean
}
gboolean
- audioresample_set_caps (GstBaseTransform * base, GstCaps * incaps,
- GstCaps * outcaps) {
+audioresample_set_caps (GstBaseTransform * base, GstCaps * incaps,
+ GstCaps * outcaps)
+{
gboolean ret;
gint inrate, outrate;
int channels;
@@ -362,7 +386,8 @@ gboolean
return TRUE;
}
-static gboolean audioresample_event (GstBaseTransform * base, GstEvent * event)
+static gboolean
+audioresample_event (GstBaseTransform * base, GstEvent * event)
{
GstAudioresample *audioresample;
@@ -397,8 +422,7 @@ static gboolean audioresample_event (GstBaseTransform * base, GstEvent * event)
}
static GstFlowReturn
- audioresample_do_output (GstAudioresample * audioresample,
- GstBuffer * outbuf)
+audioresample_do_output (GstAudioresample * audioresample, GstBuffer * outbuf)
{
int outsize;
int outsamples;
@@ -475,7 +499,7 @@ static GstFlowReturn
}
static GstFlowReturn
- audioresample_transform (GstBaseTransform * base, GstBuffer * inbuf,
+audioresample_transform (GstBaseTransform * base, GstBuffer * inbuf,
GstBuffer * outbuf)
{
GstAudioresample *audioresample;
@@ -522,7 +546,7 @@ static GstFlowReturn
/* push remaining data in the buffers out */
static GstFlowReturn
- audioresample_pushthrough (GstAudioresample * audioresample)
+audioresample_pushthrough (GstAudioresample * audioresample)
{
int outsize;
ResampleState *r;
@@ -552,29 +576,30 @@ done:
static void
- gst_audioresample_set_property (GObject * object, guint prop_id,
+gst_audioresample_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAudioresample *audioresample;
- g_return_if_fail (GST_IS_AUDIORESAMPLE (object));
- audioresample = GST_AUDIORESAMPLE (object);
+ g_return_if_fail (GST_IS_AUDIORESAMPLE (object));
+ audioresample = GST_AUDIORESAMPLE (object);
switch (prop_id) {
- case ARG_FILTERLEN:
+ case PROP_FILTERLEN:
audioresample->filter_length = g_value_get_int (value);
GST_DEBUG_OBJECT (GST_ELEMENT (audioresample), "new filter length %d",
audioresample->filter_length);
resample_set_filter_length (audioresample->resample,
audioresample->filter_length);
break;
- default:G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
- gst_audioresample_get_property (GObject * object, guint prop_id,
+gst_audioresample_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAudioresample *audioresample;
@@ -583,7 +608,7 @@ static void
audioresample = GST_AUDIORESAMPLE (object);
switch (prop_id) {
- case ARG_FILTERLEN:
+ case PROP_FILTERLEN:
g_value_set_int (value, audioresample->filter_length);
break;
default:
@@ -593,7 +618,8 @@ static void
}
-static gboolean plugin_init (GstPlugin * plugin)
+static gboolean
+plugin_init (GstPlugin * plugin)
{
resample_init ();
diff --git a/gst/audioresample/gstaudioresample.h b/gst/audioresample/gstaudioresample.h
index 9bf18c9f..f135411d 100644
--- a/gst/audioresample/gstaudioresample.h
+++ b/gst/audioresample/gstaudioresample.h
@@ -21,16 +21,13 @@
#ifndef __AUDIORESAMPLE_H__
#define __AUDIORESAMPLE_H__
-
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include "resample.h"
-
G_BEGIN_DECLS
-
#define GST_TYPE_AUDIORESAMPLE \
(gst_audioresample_get_type())
#define GST_AUDIORESAMPLE(obj) \
@@ -45,6 +42,11 @@ G_BEGIN_DECLS
typedef struct _GstAudioresample GstAudioresample;
typedef struct _GstAudioresampleClass GstAudioresampleClass;
+/**
+ * GstAudioresample:
+ *
+ * Opaque data structure.
+ */
struct _GstAudioresample {
GstBaseTransform element;
@@ -70,8 +72,6 @@ struct _GstAudioresampleClass {
GType gst_audioresample_get_type(void);
-
G_END_DECLS
-
#endif /* __AUDIORESAMPLE_H__ */
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-28 16:46:22 +0000