mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-23 08:46:40 +00:00
Applied the sinesrc patch from Steve Baker.
Original commit message from CVS: Applied the sinesrc patch from Steve Baker.
This commit is contained in:
Wim Taymans
parent
560d23e10b
commit
5647ffcc86
4 changed files with 292 additions and 98 deletions
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@ -1,6 +1,7 @@
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/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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* 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
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*
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* gstsinesrc.c:
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*
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@ -51,20 +52,25 @@ enum {
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ARG_0,
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ARG_VOLUME,
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ARG_FORMAT,
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ARG_CHANNELS,
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ARG_FREQUENCY,
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ARG_SAMPLERATE,
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ARG_FREQ,
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ARG_TABLESIZE,
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ARG_BUFFER_SIZE,
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};
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static void gst_sinesrc_class_init(GstSineSrcClass *klass);
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static void gst_sinesrc_init(GstSineSrc *sinesrc);
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static void gst_sinesrc_init(GstSineSrc *src);
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static void gst_sinesrc_set_arg(GtkObject *object,GtkArg *arg,guint id);
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static void gst_sinesrc_get_arg(GtkObject *object,GtkArg *arg,guint id);
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//static gboolean gst_sinesrc_change_state(GstElement *element,
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// GstElementState state);
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//static void gst_sinesrc_close_audio(GstSineSrc *src);
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//static gboolean gst_sinesrc_open_audio(GstSineSrc *src);
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void gst_sinesrc_sync_parms(GstSineSrc *sinesrc);
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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 inline void gst_sinesrc_update_vol_scale(GstSineSrc *src);
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void gst_sinesrc_sync_parms(GstSineSrc *src);
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static GstBuffer * gst_sinesrc_get(GstPad *pad);
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@ -105,31 +111,44 @@ gst_sinesrc_class_init(GstSineSrcClass *klass) {
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GTK_ARG_READWRITE, ARG_VOLUME);
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gtk_object_add_arg_type("GstSineSrc::format", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_FORMAT);
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gtk_object_add_arg_type("GstSineSrc::channels", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_CHANNELS);
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gtk_object_add_arg_type("GstSineSrc::frequency", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_FREQUENCY);
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gtk_object_add_arg_type("GstSineSrc::samplerate", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_SAMPLERATE);
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gtk_object_add_arg_type("GstSineSrc::tablesize", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_TABLESIZE);
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gtk_object_add_arg_type("GstSineSrc::freq", GTK_TYPE_DOUBLE,
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GTK_ARG_READWRITE, ARG_FREQ);
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gtk_object_add_arg_type("GstSineSrc::buffersize", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_BUFFER_SIZE);
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gtkobject_class->set_arg = gst_sinesrc_set_arg;
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gtkobject_class->get_arg = gst_sinesrc_get_arg;
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// gstelement_class->change_state = gst_sinesrc_change_state;
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}
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static void gst_sinesrc_init(GstSineSrc *sinesrc) {
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sinesrc->srcpad = gst_pad_new("src",GST_PAD_SRC);
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gst_pad_set_get_function(sinesrc->srcpad,gst_sinesrc_get);
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gst_element_add_pad(GST_ELEMENT(sinesrc),sinesrc->srcpad);
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static void gst_sinesrc_init(GstSineSrc *src) {
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src->srcpad = gst_pad_new("src",GST_PAD_SRC);
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gst_pad_set_get_function(src->srcpad, gst_sinesrc_get);
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gst_element_add_pad(GST_ELEMENT(src), src->srcpad);
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sinesrc->volume = 1.0;
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src->volume = 1.0;
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gst_sinesrc_update_vol_scale(src);
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sinesrc->format = AFMT_S16_LE;
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sinesrc->channels = 2;
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sinesrc->frequency = 44100;
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src->format = AFMT_S16_LE;
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src->samplerate = 44100;
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src->freq = 100.0;
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src->table_pos = 0.0;
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src->table_size = 1024;
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gst_sinesrc_populate_sinetable(src);
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gst_sinesrc_update_table_inc(src);
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gst_sinesrc_sync_parms(src);
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src->buffer_size=1024;
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src->seq = 0;
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sinesrc->seq = 0;
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sinesrc->sentmeta = FALSE;
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src->sentmeta = FALSE;
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}
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static GstBuffer *
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@ -139,23 +158,43 @@ gst_sinesrc_get(GstPad *pad)
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GstBuffer *buf;
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gint16 *samples;
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gint i;
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gint volume;
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gdouble val;
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g_return_val_if_fail (pad != NULL, NULL);
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src = GST_SINESRC(gst_pad_get_parent (pad));
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buf = gst_buffer_new();
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g_return_val_if_fail (buf, NULL);
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GST_BUFFER_DATA(buf) = (gpointer)malloc(4096);
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samples = (gint16*)GST_BUFFER_DATA(buf);
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GST_BUFFER_SIZE(buf) = 4096;
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samples = g_new(gint16, src->buffer_size);
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GST_BUFFER_DATA(buf) = (gpointer) samples;
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GST_BUFFER_SIZE(buf) = 2 * src->buffer_size;
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for (i=0 ; i < src->buffer_size; i++) {
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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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volume = 65535 * src->volume;
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for (i=0;i<1024;i++) {
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val = sin((gdouble)i/src->frequency);
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samples[i] = val * volume;
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samples[i+1] = samples[i];
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//no interpolation
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//samples[i] = src->table_data[src->table_lookup]
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// * src->vol_scale;
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//linear interpolation
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samples[i] = ((src->table_interp
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*(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->vol_scale;
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}
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if (!src->sentmeta) {
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@ -165,7 +204,7 @@ gst_sinesrc_get(GstPad *pad)
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src->sentmeta = TRUE;
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}
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g_print(">");
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//g_print(">");
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return buf;
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}
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@ -178,17 +217,35 @@ static void gst_sinesrc_set_arg(GtkObject *object,GtkArg *arg,guint id) {
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switch (id) {
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case ARG_VOLUME:
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if (GTK_VALUE_DOUBLE(*arg) < 0.0 || GTK_VALUE_DOUBLE(*arg) > 1.0)
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break;
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src->volume = GTK_VALUE_DOUBLE(*arg);
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gst_sinesrc_update_vol_scale(src);
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break;
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case ARG_FORMAT:
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src->format = GTK_VALUE_INT(*arg);
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gst_sinesrc_sync_parms(src);
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break;
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case ARG_CHANNELS:
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src->channels = GTK_VALUE_INT(*arg);
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case ARG_SAMPLERATE:
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src->samplerate = GTK_VALUE_INT(*arg);
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gst_sinesrc_sync_parms(src);
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gst_sinesrc_update_table_inc(src);
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break;
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case ARG_FREQUENCY:
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src->frequency = GTK_VALUE_INT(*arg);
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case ARG_FREQ: {
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if (GTK_VALUE_DOUBLE(*arg) <= 0.0 || GTK_VALUE_DOUBLE(*arg) > src->samplerate/2)
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break;
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src->freq = GTK_VALUE_DOUBLE(*arg);
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gst_sinesrc_update_table_inc(src);
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break;
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case ARG_TABLESIZE:
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src->table_size = GTK_VALUE_INT(*arg);
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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_BUFFER_SIZE:
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src->buffer_size = GTK_VALUE_INT(*arg);
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break;
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}
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default:
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break;
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}
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@ -208,11 +265,17 @@ static void gst_sinesrc_get_arg(GtkObject *object,GtkArg *arg,guint id) {
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case ARG_FORMAT:
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GTK_VALUE_INT(*arg) = src->format;
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break;
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case ARG_CHANNELS:
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GTK_VALUE_INT(*arg) = src->channels;
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case ARG_SAMPLERATE:
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GTK_VALUE_INT(*arg) = src->samplerate;
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break;
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case ARG_FREQUENCY:
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GTK_VALUE_INT(*arg) = src->frequency;
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case ARG_FREQ:
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GTK_VALUE_DOUBLE(*arg) = src->freq;
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break;
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case ARG_TABLESIZE:
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GTK_VALUE_INT(*arg) = src->table_size;
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break;
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case ARG_BUFFER_SIZE:
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GTK_VALUE_INT(*arg) = src->buffer_size;
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break;
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default:
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arg->type = GTK_TYPE_INVALID;
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@ -243,9 +306,33 @@ static gboolean gst_sinesrc_change_state(GstElement *element,
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}
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*/
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void gst_sinesrc_sync_parms(GstSineSrc *sinesrc) {
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sinesrc->meta.format = sinesrc->format;
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sinesrc->meta.channels = sinesrc->channels;
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sinesrc->meta.frequency = sinesrc->frequency;
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sinesrc->sentmeta = FALSE;
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static void gst_sinesrc_populate_sinetable(GstSineSrc *src)
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{
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gint i;
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gdouble pi2scaled = M_PI * 2 / src->table_size;
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gfloat *table = g_new(gfloat, src->table_size);
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for(i=0 ; i < src->table_size ; i++){
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table[i] = (gfloat)sin(i * pi2scaled);
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}
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g_free(src->table_data);
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src->table_data = table;
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}
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static inline void gst_sinesrc_update_table_inc(GstSineSrc *src)
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{
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src->table_inc = src->table_size * src->freq / src->samplerate;
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}
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static inline void gst_sinesrc_update_vol_scale(GstSineSrc *src)
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{
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src->vol_scale = 32767 * src->volume;
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}
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void gst_sinesrc_sync_parms(GstSineSrc *src) {
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src->meta.format = src->format;
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src->meta.channels = 1;
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src->meta.frequency = src->samplerate;
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src->sentmeta = FALSE;
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}
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@ -60,13 +60,23 @@ struct _GstSineSrc {
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/* parameters */
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gdouble volume;
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gint freq;
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gdouble vol_scale;
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gdouble freq;
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/* lookup table data */
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gfloat *table_data;
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gdouble table_pos;
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gdouble table_inc;
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gint table_size;
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gdouble table_interp;
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gint table_lookup;
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gint table_lookup_next;
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/* audio parameters */
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gint format;
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gint channels;
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gint frequency;
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gint samplerate;
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gint buffer_size;
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gulong seq;
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MetaAudioRaw meta;
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@ -1,6 +1,7 @@
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/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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* 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
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*
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* gstsinesrc.c:
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*
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@ -51,20 +52,25 @@ enum {
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ARG_0,
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ARG_VOLUME,
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ARG_FORMAT,
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ARG_CHANNELS,
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ARG_FREQUENCY,
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ARG_SAMPLERATE,
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ARG_FREQ,
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ARG_TABLESIZE,
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ARG_BUFFER_SIZE,
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};
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static void gst_sinesrc_class_init(GstSineSrcClass *klass);
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static void gst_sinesrc_init(GstSineSrc *sinesrc);
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static void gst_sinesrc_init(GstSineSrc *src);
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static void gst_sinesrc_set_arg(GtkObject *object,GtkArg *arg,guint id);
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static void gst_sinesrc_get_arg(GtkObject *object,GtkArg *arg,guint id);
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//static gboolean gst_sinesrc_change_state(GstElement *element,
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// GstElementState state);
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//static void gst_sinesrc_close_audio(GstSineSrc *src);
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//static gboolean gst_sinesrc_open_audio(GstSineSrc *src);
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void gst_sinesrc_sync_parms(GstSineSrc *sinesrc);
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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 inline void gst_sinesrc_update_vol_scale(GstSineSrc *src);
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void gst_sinesrc_sync_parms(GstSineSrc *src);
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static GstBuffer * gst_sinesrc_get(GstPad *pad);
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@ -105,31 +111,44 @@ gst_sinesrc_class_init(GstSineSrcClass *klass) {
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GTK_ARG_READWRITE, ARG_VOLUME);
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gtk_object_add_arg_type("GstSineSrc::format", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_FORMAT);
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gtk_object_add_arg_type("GstSineSrc::channels", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_CHANNELS);
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gtk_object_add_arg_type("GstSineSrc::frequency", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_FREQUENCY);
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gtk_object_add_arg_type("GstSineSrc::samplerate", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_SAMPLERATE);
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gtk_object_add_arg_type("GstSineSrc::tablesize", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_TABLESIZE);
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gtk_object_add_arg_type("GstSineSrc::freq", GTK_TYPE_DOUBLE,
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GTK_ARG_READWRITE, ARG_FREQ);
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gtk_object_add_arg_type("GstSineSrc::buffersize", GTK_TYPE_INT,
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GTK_ARG_READWRITE, ARG_BUFFER_SIZE);
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gtkobject_class->set_arg = gst_sinesrc_set_arg;
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gtkobject_class->get_arg = gst_sinesrc_get_arg;
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// gstelement_class->change_state = gst_sinesrc_change_state;
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}
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static void gst_sinesrc_init(GstSineSrc *sinesrc) {
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sinesrc->srcpad = gst_pad_new("src",GST_PAD_SRC);
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gst_pad_set_get_function(sinesrc->srcpad,gst_sinesrc_get);
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gst_element_add_pad(GST_ELEMENT(sinesrc),sinesrc->srcpad);
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static void gst_sinesrc_init(GstSineSrc *src) {
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src->srcpad = gst_pad_new("src",GST_PAD_SRC);
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gst_pad_set_get_function(src->srcpad, gst_sinesrc_get);
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gst_element_add_pad(GST_ELEMENT(src), src->srcpad);
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sinesrc->volume = 1.0;
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src->volume = 1.0;
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gst_sinesrc_update_vol_scale(src);
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sinesrc->format = AFMT_S16_LE;
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sinesrc->channels = 2;
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sinesrc->frequency = 44100;
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src->format = AFMT_S16_LE;
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src->samplerate = 44100;
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src->freq = 100.0;
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src->table_pos = 0.0;
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src->table_size = 1024;
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gst_sinesrc_populate_sinetable(src);
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gst_sinesrc_update_table_inc(src);
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gst_sinesrc_sync_parms(src);
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src->buffer_size=1024;
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src->seq = 0;
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sinesrc->seq = 0;
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sinesrc->sentmeta = FALSE;
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src->sentmeta = FALSE;
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}
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static GstBuffer *
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@ -139,23 +158,43 @@ gst_sinesrc_get(GstPad *pad)
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GstBuffer *buf;
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gint16 *samples;
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gint i;
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gint volume;
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gdouble val;
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g_return_val_if_fail (pad != NULL, NULL);
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src = GST_SINESRC(gst_pad_get_parent (pad));
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buf = gst_buffer_new();
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g_return_val_if_fail (buf, NULL);
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GST_BUFFER_DATA(buf) = (gpointer)malloc(4096);
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samples = (gint16*)GST_BUFFER_DATA(buf);
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GST_BUFFER_SIZE(buf) = 4096;
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samples = g_new(gint16, src->buffer_size);
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GST_BUFFER_DATA(buf) = (gpointer) samples;
|
||||
GST_BUFFER_SIZE(buf) = 2 * src->buffer_size;
|
||||
|
||||
for (i=0 ; i < src->buffer_size; i++) {
|
||||
src->table_lookup = (gint)(src->table_pos);
|
||||
src->table_lookup_next = src->table_lookup + 1;
|
||||
src->table_interp = src->table_pos - src->table_lookup;
|
||||
|
||||
// wrap the array lookups if we're out of bounds
|
||||
if (src->table_lookup_next >= src->table_size){
|
||||
src->table_lookup_next -= src->table_size;
|
||||
if (src->table_lookup >= src->table_size){
|
||||
src->table_lookup -= src->table_size;
|
||||
src->table_pos -= src->table_size;
|
||||
}
|
||||
}
|
||||
|
||||
src->table_pos += src->table_inc;
|
||||
|
||||
volume = 65535 * src->volume;
|
||||
for (i=0;i<1024;i++) {
|
||||
val = sin((gdouble)i/src->frequency);
|
||||
samples[i] = val * volume;
|
||||
samples[i+1] = samples[i];
|
||||
//no interpolation
|
||||
//samples[i] = src->table_data[src->table_lookup]
|
||||
// * src->vol_scale;
|
||||
|
||||
//linear interpolation
|
||||
samples[i] = ((src->table_interp
|
||||
*(src->table_data[src->table_lookup_next]
|
||||
-src->table_data[src->table_lookup]
|
||||
)
|
||||
)+src->table_data[src->table_lookup]
|
||||
)* src->vol_scale;
|
||||
}
|
||||
|
||||
if (!src->sentmeta) {
|
||||
|
|
@ -165,7 +204,7 @@ gst_sinesrc_get(GstPad *pad)
|
|||
src->sentmeta = TRUE;
|
||||
}
|
||||
|
||||
g_print(">");
|
||||
//g_print(">");
|
||||
return buf;
|
||||
}
|
||||
|
||||
|
|
@ -178,17 +217,35 @@ static void gst_sinesrc_set_arg(GtkObject *object,GtkArg *arg,guint id) {
|
|||
|
||||
switch (id) {
|
||||
case ARG_VOLUME:
|
||||
if (GTK_VALUE_DOUBLE(*arg) < 0.0 || GTK_VALUE_DOUBLE(*arg) > 1.0)
|
||||
break;
|
||||
src->volume = GTK_VALUE_DOUBLE(*arg);
|
||||
gst_sinesrc_update_vol_scale(src);
|
||||
break;
|
||||
case ARG_FORMAT:
|
||||
src->format = GTK_VALUE_INT(*arg);
|
||||
gst_sinesrc_sync_parms(src);
|
||||
break;
|
||||
case ARG_CHANNELS:
|
||||
src->channels = GTK_VALUE_INT(*arg);
|
||||
case ARG_SAMPLERATE:
|
||||
src->samplerate = GTK_VALUE_INT(*arg);
|
||||
gst_sinesrc_sync_parms(src);
|
||||
gst_sinesrc_update_table_inc(src);
|
||||
break;
|
||||
case ARG_FREQUENCY:
|
||||
src->frequency = GTK_VALUE_INT(*arg);
|
||||
case ARG_FREQ: {
|
||||
if (GTK_VALUE_DOUBLE(*arg) <= 0.0 || GTK_VALUE_DOUBLE(*arg) > src->samplerate/2)
|
||||
break;
|
||||
src->freq = GTK_VALUE_DOUBLE(*arg);
|
||||
gst_sinesrc_update_table_inc(src);
|
||||
break;
|
||||
case ARG_TABLESIZE:
|
||||
src->table_size = GTK_VALUE_INT(*arg);
|
||||
gst_sinesrc_populate_sinetable(src);
|
||||
gst_sinesrc_update_table_inc(src);
|
||||
break;
|
||||
case ARG_BUFFER_SIZE:
|
||||
src->buffer_size = GTK_VALUE_INT(*arg);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
|
@ -208,11 +265,17 @@ static void gst_sinesrc_get_arg(GtkObject *object,GtkArg *arg,guint id) {
|
|||
case ARG_FORMAT:
|
||||
GTK_VALUE_INT(*arg) = src->format;
|
||||
break;
|
||||
case ARG_CHANNELS:
|
||||
GTK_VALUE_INT(*arg) = src->channels;
|
||||
case ARG_SAMPLERATE:
|
||||
GTK_VALUE_INT(*arg) = src->samplerate;
|
||||
break;
|
||||
case ARG_FREQUENCY:
|
||||
GTK_VALUE_INT(*arg) = src->frequency;
|
||||
case ARG_FREQ:
|
||||
GTK_VALUE_DOUBLE(*arg) = src->freq;
|
||||
break;
|
||||
case ARG_TABLESIZE:
|
||||
GTK_VALUE_INT(*arg) = src->table_size;
|
||||
break;
|
||||
case ARG_BUFFER_SIZE:
|
||||
GTK_VALUE_INT(*arg) = src->buffer_size;
|
||||
break;
|
||||
default:
|
||||
arg->type = GTK_TYPE_INVALID;
|
||||
|
|
@ -243,9 +306,33 @@ static gboolean gst_sinesrc_change_state(GstElement *element,
|
|||
}
|
||||
*/
|
||||
|
||||
void gst_sinesrc_sync_parms(GstSineSrc *sinesrc) {
|
||||
sinesrc->meta.format = sinesrc->format;
|
||||
sinesrc->meta.channels = sinesrc->channels;
|
||||
sinesrc->meta.frequency = sinesrc->frequency;
|
||||
sinesrc->sentmeta = FALSE;
|
||||
static void gst_sinesrc_populate_sinetable(GstSineSrc *src)
|
||||
{
|
||||
gint i;
|
||||
gdouble pi2scaled = M_PI * 2 / src->table_size;
|
||||
gfloat *table = g_new(gfloat, src->table_size);
|
||||
|
||||
for(i=0 ; i < src->table_size ; i++){
|
||||
table[i] = (gfloat)sin(i * pi2scaled);
|
||||
}
|
||||
|
||||
g_free(src->table_data);
|
||||
src->table_data = table;
|
||||
}
|
||||
|
||||
static inline void gst_sinesrc_update_table_inc(GstSineSrc *src)
|
||||
{
|
||||
src->table_inc = src->table_size * src->freq / src->samplerate;
|
||||
}
|
||||
|
||||
static inline void gst_sinesrc_update_vol_scale(GstSineSrc *src)
|
||||
{
|
||||
src->vol_scale = 32767 * src->volume;
|
||||
}
|
||||
|
||||
void gst_sinesrc_sync_parms(GstSineSrc *src) {
|
||||
src->meta.format = src->format;
|
||||
src->meta.channels = 1;
|
||||
src->meta.frequency = src->samplerate;
|
||||
src->sentmeta = FALSE;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -60,13 +60,23 @@ struct _GstSineSrc {
|
|||
|
||||
/* parameters */
|
||||
gdouble volume;
|
||||
gint freq;
|
||||
|
||||
gdouble vol_scale;
|
||||
gdouble freq;
|
||||
|
||||
/* lookup table data */
|
||||
gfloat *table_data;
|
||||
gdouble table_pos;
|
||||
gdouble table_inc;
|
||||
gint table_size;
|
||||
gdouble table_interp;
|
||||
gint table_lookup;
|
||||
gint table_lookup_next;
|
||||
|
||||
/* audio parameters */
|
||||
gint format;
|
||||
gint channels;
|
||||
gint frequency;
|
||||
gint samplerate;
|
||||
|
||||
gint buffer_size;
|
||||
gulong seq;
|
||||
|
||||
MetaAudioRaw meta;
|
||||
|
|
|
|||
Loading…
Reference in a new issue