+++ /dev/null
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- * Copyright (C) 2003,2004 David A. Schleef <ds@schleef.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-/* Element-Checklist-Version: 5 */
-
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include <string.h>
-#include <math.h>
-
-/*#define DEBUG_ENABLED */
-#include "gstaudioresample.h"
-#include <gst/audio/audio.h>
-
-GST_DEBUG_CATEGORY_STATIC (audioresample_debug);
-#define GST_CAT_DEFAULT audioresample_debug
-
-/* Audioresample signals and args */
-enum
-{
- /* FILL ME */
- LAST_SIGNAL
-};
-
-enum
-{
- ARG_0,
- ARG_FILTERLEN
-};
-
-#define SUPPORTED_CAPS \
- GST_STATIC_CAPS (\
- "audio/x-raw-int, " \
- "rate = (int) [ 1, MAX ], " \
- "channels = (int) [ 1, MAX ], " \
- "endianness = (int) BYTE_ORDER, " \
- "width = (int) 16, " \
- "depth = (int) 16, " \
- "signed = (boolean) true"
-#if 0
- /* disabled because it segfaults */
-"audio/x-raw-float, "
- "rate = (int) [ 1, MAX ], "
- "channels = (int) [ 1, MAX ], "
- "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_src_template =
- GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC, GST_PAD_ALWAYS, SUPPORTED_CAPS);
-
- static void gst_audioresample_base_init (gpointer g_class);
- static void gst_audioresample_class_init (AudioresampleClass * klass);
- static void gst_audioresample_init (Audioresample * audioresample);
- static void gst_audioresample_dispose (GObject * object);
-
- static void gst_audioresample_chain (GstPad * pad, GstData * _data);
-
- 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 GstElementClass *parent_class = NULL;
-
-/*static guint gst_audioresample_signals[LAST_SIGNAL] = { 0 }; */
-
- GType audioresample_get_type (void)
- {
- static GType audioresample_type = 0;
-
- if (!audioresample_type)
- {
- static const GTypeInfo audioresample_info = {
- sizeof (AudioresampleClass),
- gst_audioresample_base_init,
- NULL,
- (GClassInitFunc) gst_audioresample_class_init,
- NULL,
- NULL,
- sizeof (Audioresample), 0,
- (GInstanceInitFunc) gst_audioresample_init,};
-
- audioresample_type =
- g_type_register_static (GST_TYPE_ELEMENT, "Audioresample",
- &audioresample_info, 0);
- }
- return audioresample_type;
- }
-
-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_set_details_simple (gstelement_class, "Audio scaler",
- "Filter/Converter/Audio",
- "Resample audio", "David Schleef <ds@schleef.org>");
-}
-
-static void gst_audioresample_class_init (AudioresampleClass * klass)
-{
- GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
-
- gobject_class = (GObjectClass *) klass;
- gstelement_class = (GstElementClass *) klass;
-
- gobject_class->set_property = gst_audioresample_set_property;
- 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_param_spec_int ("filter-length", "filter_length", "filter_length",
- 0, G_MAXINT, 16,
- G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
-
- parent_class = g_type_class_peek_parent (klass);
-
- GST_DEBUG_CATEGORY_INIT (audioresample_debug, "audioresample", 0,
- "audioresample element");
-}
-
-static void gst_audioresample_expand_caps (GstCaps * caps)
-{
- gint i;
-
- for (i = 0; i < gst_caps_get_size (caps); i++) {
- GstStructure *structure = gst_caps_get_structure (caps, i);
- const GValue *value;
-
- value = gst_structure_get_value (structure, "rate");
- if (value == NULL) {
- GST_ERROR ("caps structure doesn't have required rate field");
- return;
- }
-
- gst_structure_set (structure, "rate", GST_TYPE_INT_RANGE, 1, G_MAXINT, 0);
- }
-}
-
-static GstCaps *gst_audioresample_getcaps (GstPad * pad)
-{
- Audioresample *audioresample;
- GstCaps *caps;
- GstPad *otherpad;
-
- audioresample = GST_AUDIORESAMPLE (gst_pad_get_parent (pad));
-
- otherpad = (pad == audioresample->srcpad) ? audioresample->sinkpad :
- audioresample->srcpad;
- caps = gst_pad_get_allowed_caps (otherpad);
-
- gst_audioresample_expand_caps (caps);
-
- return caps;
-}
-
-static GstCaps *gst_audioresample_fixate (GstPad * pad, const GstCaps * caps)
-{
- Audioresample *audioresample;
- GstPad *otherpad;
- int rate;
- GstCaps *copy;
- GstStructure *structure;
-
- audioresample = GST_AUDIORESAMPLE (gst_pad_get_parent (pad));
-
- if (pad == audioresample->srcpad) {
- otherpad = audioresample->sinkpad;
- rate = audioresample->i_rate;
- } else
- {
- otherpad = audioresample->srcpad;
- rate = audioresample->o_rate;
- }
- if (!GST_PAD_IS_NEGOTIATING (otherpad))
- return NULL;
- if (gst_caps_get_size (caps) > 1)
- return NULL;
-
- copy = gst_caps_copy (caps);
- structure = gst_caps_get_structure (copy, 0);
- if (rate) {
- if (gst_structure_fixate_field_nearest_int (structure, "rate", rate)) {
- return copy;
- }
- }
- gst_caps_free (copy);
- return NULL;
-}
-
-static GstPadLinkReturn gst_audioresample_link (GstPad * pad,
- const GstCaps * caps)
-{
- Audioresample *audioresample;
- GstStructure *structure;
- int rate;
- int channels;
- gboolean ret;
- GstPad *otherpad;
-
- audioresample = GST_AUDIORESAMPLE (gst_pad_get_parent (pad));
-
- otherpad = (pad == audioresample->srcpad) ? audioresample->sinkpad :
- audioresample->srcpad;
-
- structure = gst_caps_get_structure (caps, 0);
- ret = gst_structure_get_int (structure, "rate", &rate);
- ret &= gst_structure_get_int (structure, "channels", &channels);
- if (!ret)
- {
- return GST_PAD_LINK_REFUSED;
- }
-
- if (gst_pad_is_negotiated (otherpad))
- {
- GstCaps *othercaps = gst_caps_copy (caps);
- int otherrate;
- GstPadLinkReturn linkret;
-
- if (pad == audioresample->srcpad) {
- otherrate = audioresample->i_rate;
- } else {
- otherrate = audioresample->o_rate;
- }
- gst_caps_set_simple (othercaps, "rate", G_TYPE_INT, otherrate, NULL);
- linkret = gst_pad_try_set_caps (otherpad, othercaps);
- if (GST_PAD_LINK_FAILED (linkret)) {
- return GST_PAD_LINK_REFUSED;
- }
-
- }
-
- audioresample->channels = channels;
- resample_set_n_channels (audioresample->resample, audioresample->channels);
- if (pad == audioresample->srcpad) {
- audioresample->o_rate = rate;
- resample_set_output_rate (audioresample->resample, audioresample->o_rate);
- GST_DEBUG ("set o_rate to %d", rate);
- } else {
- audioresample->i_rate = rate;
- resample_set_input_rate (audioresample->resample, audioresample->i_rate);
- GST_DEBUG ("set i_rate to %d", rate);
- }
-
- return GST_PAD_LINK_OK;
-}
-
-static void gst_audioresample_init (Audioresample * audioresample)
-{
- ResampleState *r;
-
- audioresample->sinkpad =
- gst_pad_new_from_static_template (&gst_audioresample_sink_template,
- "sink");
- gst_element_add_pad (GST_ELEMENT (audioresample), audioresample->sinkpad);
- gst_pad_set_chain_function (audioresample->sinkpad, gst_audioresample_chain);
- gst_pad_set_link_function (audioresample->sinkpad, gst_audioresample_link);
- gst_pad_set_getcaps_function (audioresample->sinkpad,
- gst_audioresample_getcaps);
- gst_pad_set_fixate_function (audioresample->sinkpad,
- gst_audioresample_fixate);
-
- audioresample->srcpad =
- gst_pad_new_from_static_template (&gst_audioresample_src_template, "src");
-
- gst_element_add_pad (GST_ELEMENT (audioresample), audioresample->srcpad);
- gst_pad_set_link_function (audioresample->srcpad, gst_audioresample_link);
- gst_pad_set_getcaps_function (audioresample->srcpad,
- gst_audioresample_getcaps);
- gst_pad_set_fixate_function (audioresample->srcpad, gst_audioresample_fixate);
-
- r = resample_new ();
- audioresample->resample = r;
-
- resample_set_filter_length (r, 64);
- resample_set_format (r, RESAMPLE_FORMAT_S16);
-}
-
-static void gst_audioresample_dispose (GObject * object)
-{
- Audioresample *audioresample = GST_AUDIORESAMPLE (object);
-
- if (audioresample->resample) {
- resample_free (audioresample->resample);
- }
-
- G_OBJECT_CLASS (parent_class)->dispose (object);
-}
-
-static void gst_audioresample_chain (GstPad * pad, GstData * _data)
-{
- GstBuffer *buf = GST_BUFFER (_data);
- Audioresample *audioresample;
- ResampleState *r;
- guchar *data;
- gulong size;
- int outsize;
- GstBuffer *outbuf;
-
- g_return_if_fail (pad != NULL);
- g_return_if_fail (GST_IS_PAD (pad));
- g_return_if_fail (buf != NULL);
-
- audioresample = GST_AUDIORESAMPLE (gst_pad_get_parent (pad));
-
- if (!GST_IS_BUFFER (_data)) {
- gst_pad_push (audioresample->srcpad, _data);
- return;
- }
-
- if (audioresample->passthru) {
- gst_pad_push (audioresample->srcpad, GST_DATA (buf));
- return;
- }
-
- r = audioresample->resample;
-
- data = GST_BUFFER_DATA (buf);
- size = GST_BUFFER_SIZE (buf);
-
- GST_DEBUG ("got buffer of %ld bytes", size);
-
- resample_add_input_data (r, data, size, (ResampleCallback) gst_data_unref,
- buf);
-
- outsize = resample_get_output_size (r);
- /* FIXME this is audioresample being dumb. dunno why */
- if (outsize == 0) {
- GST_ERROR ("overriding outbuf size");
- outsize = size;
- }
- outbuf = gst_buffer_new_and_alloc (outsize);
-
- outsize = resample_get_output_data (r, GST_BUFFER_DATA (outbuf), outsize);
- GST_BUFFER_SIZE (outbuf) = outsize;
-
- GST_BUFFER_TIMESTAMP (outbuf) =
- audioresample->offset * GST_SECOND / audioresample->o_rate;
- audioresample->offset += outsize / sizeof (gint16) / audioresample->channels;
-
- gst_pad_push (audioresample->srcpad, GST_DATA (outbuf));
-}
-
-static void
- gst_audioresample_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- Audioresample *audioresample;
-
- g_return_if_fail (GST_IS_AUDIORESAMPLE (object));
- audioresample = GST_AUDIORESAMPLE (object);
-
- switch (prop_id) {
- case ARG_FILTERLEN:
- audioresample->filter_length = g_value_get_int (value);
- GST_DEBUG_OBJECT (GST_ELEMENT (audioresample), "new filter length %d\n",
- audioresample->filter_length);
- resample_set_filter_length (audioresample->resample,
- audioresample->filter_length);
- break;
- default:G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
- gst_audioresample_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec)
-{
- Audioresample *audioresample;
-
- g_return_if_fail (GST_IS_AUDIORESAMPLE (object));
- audioresample = GST_AUDIORESAMPLE (object);
-
- switch (prop_id) {
- case ARG_FILTERLEN:
- g_value_set_int (value, audioresample->filter_length);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-
-static gboolean plugin_init (GstPlugin * plugin)
-{
- resample_init ();
-
- if (!gst_element_register (plugin, "audioresample", GST_RANK_PRIMARY,
- GST_TYPE_AUDIORESAMPLE)) {
- return FALSE;
- }
-
- return TRUE;
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- audioresample,
- "Resamples audio", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,
- GST_PACKAGE_ORIGIN)
projects / platform / upstream / gst-plugins-bad.git / commitdiff