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gst/sine/gstsinesrc.*: Refactor, remove the table lookup code, change the 'sync' property to 'is-live' and implement ...
Original commit message from CVS: 2005-09-26 Andy Wingo <wingo@pobox.com> * gst/sine/gstsinesrc.h: * gst/sine/gstsinesrc.c: Refactor, remove the table lookup code, change the 'sync' property to 'is-live' and implement it halfway, update for controller api change. * gst/volume/gstvolume.c (volume_transform_ip): Update for controller api change.
This commit is contained in:
Andy Wingo
parent
b17856db22
commit
d812bea064
4 changed files with 100 additions and 219 deletions
10
ChangeLog
10
ChangeLog
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@ -1,3 +1,13 @@
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2005-09-26 Andy Wingo <wingo@pobox.com>
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* gst/sine/gstsinesrc.h:
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* gst/sine/gstsinesrc.c: Refactor, remove the table lookup code,
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change the 'sync' property to 'is-live' and implement it halfway,
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update for controller api change.
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* gst/volume/gstvolume.c (volume_transform_ip): Update for
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controller api change.
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2005-09-24 Wim Taymans <wim@fluendo.com>
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* ext/alsa/gstalsasink.c: (gst_alsasink_reset):
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@ -32,7 +32,7 @@
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#include "gstsinesrc.h"
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/* elementfactory information */
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GstElementDetails gst_sinesrc_details = {
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"Sine-wave src",
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"Source/Audio",
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@ -41,23 +41,16 @@ GstElementDetails gst_sinesrc_details = {
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};
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/* SineSrc signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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PROP_0,
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PROP_SAMPLES_PER_BUFFER,
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PROP_FREQ,
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PROP_VOLUME,
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PROP_IS_LIVE,
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PROP_TIMESTAMP_OFFSET,
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};
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enum
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{
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ARG_0,
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ARG_TABLESIZE,
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ARG_SAMPLES_PER_BUFFER,
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ARG_FREQ,
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ARG_VOLUME,
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ARG_SYNC,
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ARG_TIMESTAMP_OFFSET,
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};
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static GstStaticPadTemplate gst_sinesrc_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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@ -70,10 +63,9 @@ GST_STATIC_PAD_TEMPLATE ("src",
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"depth = (int) 16, " "rate = (int) [ 1, MAX ], " "channels = (int) 1")
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);
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static void gst_sinesrc_class_init (GstSineSrcClass * klass);
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static void gst_sinesrc_base_init (GstSineSrcClass * klass);
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static void gst_sinesrc_init (GstSineSrc * src);
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static void gst_sinesrc_dispose (GObject * object);
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GST_BOILERPLATE (GstSineSrc, gst_sinesrc, GstBaseSrc, GST_TYPE_BASE_SRC);
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static void gst_sinesrc_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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@ -83,10 +75,6 @@ static void gst_sinesrc_get_property (GObject * object,
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static gboolean gst_sinesrc_setcaps (GstBaseSrc * basesrc, GstCaps * caps);
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static void gst_sinesrc_src_fixate (GstPad * pad, GstCaps * caps);
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static void gst_sinesrc_update_freq (const GValue * value, gpointer data);
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static void gst_sinesrc_populate_sinetable (GstSineSrc * src);
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static inline void gst_sinesrc_update_table_inc (GstSineSrc * src);
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static const GstQueryType *gst_sinesrc_get_query_types (GstPad * pad);
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static gboolean gst_sinesrc_src_query (GstPad * pad, GstQuery * query);
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@ -94,34 +82,11 @@ static GstFlowReturn gst_sinesrc_create (GstBaseSrc * basesrc, guint64 offset,
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guint length, GstBuffer ** buffer);
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static gboolean gst_sinesrc_start (GstBaseSrc * basesrc);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_sinesrc_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_sinesrc_get_type (void)
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{
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static GType sinesrc_type = 0;
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if (!sinesrc_type) {
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static const GTypeInfo sinesrc_info = {
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sizeof (GstSineSrcClass),
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(GBaseInitFunc) gst_sinesrc_base_init, NULL,
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(GClassInitFunc) gst_sinesrc_class_init, NULL, NULL,
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sizeof (GstSineSrc), 0,
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(GInstanceInitFunc) gst_sinesrc_init,
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};
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sinesrc_type = g_type_register_static (GST_TYPE_BASE_SRC, "GstSineSrc",
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&sinesrc_info, 0);
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}
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return sinesrc_type;
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}
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static void
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gst_sinesrc_base_init (GstSineSrcClass * klass)
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gst_sinesrc_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_sinesrc_src_template));
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@ -132,86 +97,57 @@ static void
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gst_sinesrc_class_init (GstSineSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSrcClass *gstbasesrc_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesrc_class = (GstBaseSrcClass *) klass;
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parent_class = g_type_class_ref (GST_TYPE_BASE_SRC);
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gobject_class->set_property = gst_sinesrc_set_property;
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gobject_class->get_property = gst_sinesrc_get_property;
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gobject_class->dispose = gst_sinesrc_dispose;
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g_object_class_install_property (gobject_class, ARG_TABLESIZE,
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g_param_spec_int ("tablesize", "tablesize", "tablesize",
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1, G_MAXINT, 1024, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass),
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ARG_SAMPLES_PER_BUFFER,
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PROP_SAMPLES_PER_BUFFER,
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g_param_spec_int ("samplesperbuffer", "Samples per buffer",
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"Number of samples in each outgoing buffer",
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1, G_MAXINT, 1024, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_FREQ,
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g_object_class_install_property (gobject_class, PROP_FREQ,
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g_param_spec_double ("freq", "Frequency", "Frequency of sine source",
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0.0, 20000.0, 440.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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g_object_class_install_property (gobject_class, ARG_VOLUME,
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g_object_class_install_property (gobject_class, PROP_VOLUME,
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g_param_spec_double ("volume", "Volume", "Volume",
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0.0, 1.0, 0.8, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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g_object_class_install_property (gobject_class, ARG_SYNC,
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g_param_spec_boolean ("sync", "Sync", "Synchronize to clock",
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FALSE, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TIMESTAMP_OFFSET,
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g_object_class_install_property (gobject_class, PROP_IS_LIVE,
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g_param_spec_boolean ("is-live", "Is Live",
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"Whether to act as a live source", FALSE, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass),
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PROP_TIMESTAMP_OFFSET,
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g_param_spec_int64 ("timestamp-offset", "Timestamp offset",
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"An offset added to timestamps set on buffers (in ns)", G_MININT64,
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G_MAXINT64, 0, G_PARAM_READWRITE));
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//gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR ();
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gstbasesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_sinesrc_setcaps);
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gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_sinesrc_start);
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gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_sinesrc_create);
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}
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static void
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gst_sinesrc_init (GstSineSrc * src)
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gst_sinesrc_init (GstSineSrc * src, GstSineSrcClass * g_class)
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{
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src->srcpad = GST_BASE_SRC (src)->srcpad;
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GstPad *pad = GST_BASE_SRC_PAD (src);
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gst_pad_set_fixatecaps_function (src->srcpad, gst_sinesrc_src_fixate);
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gst_pad_set_query_function (src->srcpad, gst_sinesrc_src_query);
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gst_pad_set_query_type_function (src->srcpad, gst_sinesrc_get_query_types);
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gst_pad_set_fixatecaps_function (pad, gst_sinesrc_src_fixate);
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gst_pad_set_query_function (pad, gst_sinesrc_src_query);
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gst_pad_set_query_type_function (pad, gst_sinesrc_get_query_types);
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src->samplerate = 44100;
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src->volume = 1.0;
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src->freq = 440.0;
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src->sync = FALSE;
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gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
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src->table_pos = 0.0;
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src->table_size = 1024;
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src->samples_per_buffer = 1024;
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src->timestamp = G_GINT64_CONSTANT (0);
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src->offset = G_GINT64_CONSTANT (0);
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src->timestamp_offset = G_GINT64_CONSTANT (0);
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src->seq = 0;
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gst_sinesrc_populate_sinetable (src);
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gst_sinesrc_update_table_inc (src);
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}
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static void
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gst_sinesrc_dispose (GObject * object)
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{
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GstSineSrc *sinesrc = GST_SINESRC (object);
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g_free (sinesrc->table_data);
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sinesrc->table_data = NULL;
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GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
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}
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static void
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@ -294,6 +230,29 @@ gst_sinesrc_src_query (GstPad * pad, GstQuery * query)
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return res;
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}
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/* with STREAM_LOCK */
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static GstClockReturn
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gst_sinesrc_wait (GstSineSrc * src, GstClockTime time)
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{
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GstClockReturn ret;
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GST_LOCK (src);
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/* clock_id should be NULL outside of this function */
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g_assert (src->clock_id == NULL);
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g_assert (GST_CLOCK_TIME_IS_VALID (time));
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src->clock_id = gst_clock_new_single_shot_id (GST_ELEMENT_CLOCK (src), time);
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GST_UNLOCK (src);
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ret = gst_clock_id_wait (src->clock_id, NULL);
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GST_LOCK (src);
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gst_clock_id_unref (src->clock_id);
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src->clock_id = NULL;
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GST_UNLOCK (src);
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return ret;
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}
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static GstFlowReturn
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gst_sinesrc_create (GstBaseSrc * basesrc, guint64 offset,
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guint length, GstBuffer ** buffer)
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@ -301,7 +260,7 @@ gst_sinesrc_create (GstBaseSrc * basesrc, guint64 offset,
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GstSineSrc *src;
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GstBuffer *buf;
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guint tdiff;
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gdouble step;
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gint16 *samples;
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gint i;
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@ -321,23 +280,17 @@ gst_sinesrc_create (GstBaseSrc * basesrc, guint64 offset,
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src->tags_pushed = TRUE;
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}
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/* not negotiated, fixate and set */
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if (GST_PAD_CAPS (basesrc->srcpad) == NULL) {
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GstCaps *caps;
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/* see whatever we are allowed to do */
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caps = gst_pad_get_allowed_caps (basesrc->srcpad);
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/* fix unfixed values */
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gst_sinesrc_src_fixate (basesrc->srcpad, caps);
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/* and use those */
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gst_pad_set_caps (basesrc->srcpad, caps);
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gst_caps_unref (caps);
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}
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tdiff = src->samples_per_buffer * GST_SECOND / src->samplerate;
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/* note: the 2 is because of the format we use */
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buf = gst_buffer_new_and_alloc (src->samples_per_buffer * 2);
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if (gst_base_src_is_live (basesrc)) {
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GstClockReturn ret;
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ret = gst_sinesrc_wait (src, src->timestamp + src->timestamp_offset);
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if (ret == GST_CLOCK_UNSCHEDULED)
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goto unscheduled;
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}
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buf = gst_buffer_new_and_alloc (src->samples_per_buffer * sizeof (gint16));
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gst_buffer_set_caps (buf, GST_PAD_CAPS (basesrc->srcpad));
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GST_BUFFER_TIMESTAMP (buf) = src->timestamp + src->timestamp_offset;
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@ -346,83 +299,58 @@ gst_sinesrc_create (GstBaseSrc * basesrc, guint64 offset,
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GST_BUFFER_OFFSET_END (buf) = src->offset + src->samples_per_buffer;
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GST_BUFFER_DURATION (buf) = tdiff;
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gst_object_sink_values (G_OBJECT (src), src->timestamp);
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gst_object_sync_values (G_OBJECT (src), src->timestamp);
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samples = (gint16 *) GST_BUFFER_DATA (buf);
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src->timestamp += tdiff;
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src->offset += src->samples_per_buffer;
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step = 2 * M_PI * src->freq / src->samplerate;
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for (i = 0; i < src->samples_per_buffer; i++) {
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#if 0
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src->table_lookup = (gint) (src->table_pos);
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src->table_lookup_next = src->table_lookup + 1;
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src->table_interp = src->table_pos - src->table_lookup;
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/* wrap the array lookups if we're out of bounds */
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if (src->table_lookup_next >= src->table_size) {
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src->table_lookup_next -= src->table_size;
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if (src->table_lookup >= src->table_size) {
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src->table_lookup -= src->table_size;
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src->table_pos -= src->table_size;
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}
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}
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src->table_pos += src->table_inc;
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/*no interpolation */
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/*samples[i] = src->table_data[src->table_lookup] * src->volume * 32767.0; */
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/*linear interpolation */
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samples[i] = ((src->table_interp * (src->table_data[src->table_lookup_next]
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- src->table_data[src->table_lookup]
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)
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) + src->table_data[src->table_lookup]
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) * src->volume * 32767.0;
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#endif
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src->accumulator += 2 * M_PI * src->freq / src->samplerate;
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if (src->accumulator >= 2 * M_PI) {
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src->accumulator += step;
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if (src->accumulator >= 2 * M_PI)
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src->accumulator -= 2 * M_PI;
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}
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*samples++ = sin (src->accumulator) * src->volume * 32767.0;
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samples[i] = sin (src->accumulator) * src->volume * 32767.0;
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}
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*buffer = buf;
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return GST_FLOW_OK;
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unscheduled:
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{
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GST_DEBUG_OBJECT (src, "Unscheduled while waiting for clock");
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return GST_FLOW_WRONG_STATE; /* is this the right return? */
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}
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}
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static void
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gst_sinesrc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstSineSrc *src;
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g_return_if_fail (GST_IS_SINESRC (object));
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src = GST_SINESRC (object);
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GstSineSrc *src = GST_SINESRC (object);
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switch (prop_id) {
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case ARG_TABLESIZE:
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src->table_size = g_value_get_int (value);
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gst_sinesrc_populate_sinetable (src);
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gst_sinesrc_update_table_inc (src);
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break;
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case ARG_SAMPLES_PER_BUFFER:
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case PROP_SAMPLES_PER_BUFFER:
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src->samples_per_buffer = g_value_get_int (value);
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break;
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case ARG_FREQ:
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gst_sinesrc_update_freq (value, src);
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case PROP_FREQ:
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src->freq = g_value_get_double (value);
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break;
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case ARG_VOLUME:
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case PROP_VOLUME:
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src->volume = g_value_get_double (value);
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break;
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case ARG_SYNC:
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src->sync = g_value_get_boolean (value);
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case PROP_IS_LIVE:
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gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value));
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break;
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case ARG_TIMESTAMP_OFFSET:
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case PROP_TIMESTAMP_OFFSET:
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src->timestamp_offset = g_value_get_int64 (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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@ -431,28 +359,22 @@ static void
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gst_sinesrc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstSineSrc *src;
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g_return_if_fail (GST_IS_SINESRC (object));
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src = GST_SINESRC (object);
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GstSineSrc *src = GST_SINESRC (object);
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switch (prop_id) {
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case ARG_TABLESIZE:
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g_value_set_int (value, src->table_size);
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break;
|
||||
case ARG_SAMPLES_PER_BUFFER:
|
||||
case PROP_SAMPLES_PER_BUFFER:
|
||||
g_value_set_int (value, src->samples_per_buffer);
|
||||
break;
|
||||
case ARG_FREQ:
|
||||
case PROP_FREQ:
|
||||
g_value_set_double (value, src->freq);
|
||||
break;
|
||||
case ARG_VOLUME:
|
||||
case PROP_VOLUME:
|
||||
g_value_set_double (value, src->volume);
|
||||
break;
|
||||
case ARG_SYNC:
|
||||
g_value_set_boolean (value, src->sync);
|
||||
case PROP_IS_LIVE:
|
||||
g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src)));
|
||||
break;
|
||||
case ARG_TIMESTAMP_OFFSET:
|
||||
case PROP_TIMESTAMP_OFFSET:
|
||||
g_value_set_int64 (value, src->timestamp_offset);
|
||||
break;
|
||||
default:
|
||||
|
|
@ -472,40 +394,6 @@ gst_sinesrc_start (GstBaseSrc * basesrc)
|
|||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_sinesrc_populate_sinetable (GstSineSrc * src)
|
||||
{
|
||||
gint i;
|
||||
gdouble pi2scaled = M_PI * 2 / src->table_size;
|
||||
gdouble *table = g_new (gdouble, src->table_size);
|
||||
|
||||
for (i = 0; i < src->table_size; i++) {
|
||||
table[i] = (gdouble) sin (i * pi2scaled);
|
||||
}
|
||||
|
||||
g_free (src->table_data);
|
||||
src->table_data = table;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_sinesrc_update_freq (const GValue * value, gpointer data)
|
||||
{
|
||||
GstSineSrc *src = (GstSineSrc *) data;
|
||||
|
||||
g_return_if_fail (GST_IS_SINESRC (src));
|
||||
|
||||
src->freq = g_value_get_double (value);
|
||||
src->table_inc = src->table_size * src->freq / src->samplerate;
|
||||
|
||||
GST_DEBUG ("freq %f", src->freq);
|
||||
}
|
||||
|
||||
static inline void
|
||||
gst_sinesrc_update_table_inc (GstSineSrc * src)
|
||||
{
|
||||
src->table_inc = src->table_size * src->freq / src->samplerate;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -31,9 +31,6 @@
|
|||
G_BEGIN_DECLS
|
||||
|
||||
|
||||
GstElementDetails gst_sinesrc_details;
|
||||
|
||||
|
||||
#define GST_TYPE_SINESRC \
|
||||
(gst_sinesrc_get_type())
|
||||
#define GST_SINESRC(obj) \
|
||||
|
|
@ -51,28 +48,14 @@ typedef struct _GstSineSrcClass GstSineSrcClass;
|
|||
struct _GstSineSrc {
|
||||
GstBaseSrc parent;
|
||||
|
||||
/* pads */
|
||||
GstPad *srcpad;
|
||||
|
||||
/* parameters */
|
||||
gdouble volume;
|
||||
gdouble freq;
|
||||
gboolean sync;
|
||||
|
||||
/* lookup table data */
|
||||
gdouble *table_data;
|
||||
gdouble table_pos;
|
||||
gdouble table_inc;
|
||||
gint table_size;
|
||||
gdouble table_interp;
|
||||
gint table_lookup;
|
||||
gint table_lookup_next;
|
||||
|
||||
/* audio parameters */
|
||||
gint samplerate;
|
||||
|
||||
gint samples_per_buffer;
|
||||
gulong seq;
|
||||
|
||||
guint64 timestamp;
|
||||
guint64 offset;
|
||||
|
|
@ -81,7 +64,7 @@ struct _GstSineSrc {
|
|||
|
||||
gboolean tags_pushed;
|
||||
|
||||
GstClock *clock;
|
||||
GstClockID clock_id;
|
||||
GstClockTimeDiff timestamp_offset;
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -411,7 +411,7 @@ volume_transform_ip (GstBaseTransform * base, GstBuffer * outbuf)
|
|||
GstVolume *this = GST_VOLUME (base);
|
||||
|
||||
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (outbuf)))
|
||||
gst_object_sink_values (G_OBJECT (this), GST_BUFFER_TIMESTAMP (outbuf));
|
||||
gst_object_sync_values (G_OBJECT (this), GST_BUFFER_TIMESTAMP (outbuf));
|
||||
|
||||
this->process (this, GST_BUFFER_TIMESTAMP (outbuf),
|
||||
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
|
||||
|
|
|
|||
Loading…
Reference in a new issue