--- a/gst_plugins_good/gst/audiofx/audioecho.c Tue Jul 06 14:35:10 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,391 +0,0 @@
-/*
- * GStreamer
- * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
- *
- * 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.
- */
-
-/**
- * SECTION:element-audioecho
- * @Since: 0.10.14
- *
- * audioecho adds an echo or (simple) reverb effect to an audio stream. The echo
- * delay, intensity and the percentage of feedback can be configured.
- *
- * For getting an echo effect you have to set the delay to a larger value,
- * for example 200ms and more. Everything below will result in a simple
- * reverb effect, which results in a slightly metallic sound.
- *
- * Use the max-delay property to set the maximum amount of delay that
- * will be used. This can only be set before going to the PAUSED or PLAYING
- * state and will be set to the current delay by default.
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch filesrc location="melo1.ogg" ! audioconvert ! audioecho delay=500000000 intensity=0.6 feedback=0.4 ! audioconvert ! autoaudiosink
- * gst-launch filesrc location="melo1.ogg" ! decodebin ! audioconvert ! audioecho delay=50000000 intensity=0.6 feedback=0.4 ! audioconvert ! autoaudiosink
- * ]|
- * </refsect2>
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gst/gst.h>
-#include <gst/base/gstbasetransform.h>
-#include <gst/audio/audio.h>
-#include <gst/audio/gstaudiofilter.h>
-#include <gst/controller/gstcontroller.h>
-
-#include "audioecho.h"
-
-#define GST_CAT_DEFAULT gst_audio_echo_debug
-GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
-
-enum
-{
- PROP_0,
- PROP_DELAY,
- PROP_MAX_DELAY,
- PROP_INTENSITY,
- PROP_FEEDBACK
-};
-
-#define ALLOWED_CAPS \
- "audio/x-raw-float," \
- " width=(int) { 32, 64 }, " \
- " endianness=(int)BYTE_ORDER," \
- " rate=(int)[1,MAX]," \
- " channels=(int)[1,MAX]"
-
-#define DEBUG_INIT(bla) \
- GST_DEBUG_CATEGORY_INIT (gst_audio_echo_debug, "audioecho", 0, "audioecho element");
-
-GST_BOILERPLATE_FULL (GstAudioEcho, gst_audio_echo, GstAudioFilter,
- GST_TYPE_AUDIO_FILTER, DEBUG_INIT);
-
-static void gst_audio_echo_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec);
-static void gst_audio_echo_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec);
-static void gst_audio_echo_finalize (GObject * object);
-
-static gboolean gst_audio_echo_setup (GstAudioFilter * self,
- GstRingBufferSpec * format);
-static gboolean gst_audio_echo_stop (GstBaseTransform * base);
-static GstFlowReturn gst_audio_echo_transform_ip (GstBaseTransform * base,
- GstBuffer * buf);
-
-static void gst_audio_echo_transform_float (GstAudioEcho * self,
- gfloat * data, guint num_samples);
-static void gst_audio_echo_transform_double (GstAudioEcho * self,
- gdouble * data, guint num_samples);
-
-/* GObject vmethod implementations */
-
-static void
-gst_audio_echo_base_init (gpointer klass)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
- GstCaps *caps;
-
- gst_element_class_set_details_simple (element_class, "Audio echo",
- "Filter/Effect/Audio",
- "Adds an echo or reverb effect to an audio stream",
- "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
-
- caps = gst_caps_from_string (ALLOWED_CAPS);
- gst_audio_filter_class_add_pad_templates (GST_AUDIO_FILTER_CLASS (klass),
- caps);
- gst_caps_unref (caps);
-}
-
-static void
-gst_audio_echo_class_init (GstAudioEchoClass * klass)
-{
- GObjectClass *gobject_class = (GObjectClass *) klass;
- GstBaseTransformClass *basetransform_class = (GstBaseTransformClass *) klass;
- GstAudioFilterClass *audioself_class = (GstAudioFilterClass *) klass;
-
- gobject_class->set_property = gst_audio_echo_set_property;
- gobject_class->get_property = gst_audio_echo_get_property;
- gobject_class->finalize = gst_audio_echo_finalize;
-
- g_object_class_install_property (gobject_class, PROP_DELAY,
- g_param_spec_uint64 ("delay", "Delay",
- "Delay of the echo in nanoseconds", 1, G_MAXUINT64,
- 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS
- | GST_PARAM_CONTROLLABLE));
-
- g_object_class_install_property (gobject_class, PROP_MAX_DELAY,
- g_param_spec_uint64 ("max-delay", "Maximum Delay",
- "Maximum delay of the echo in nanoseconds"
- " (can't be changed in PLAYING or PAUSED state)",
- 1, G_MAXUINT64, 1,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
-
- g_object_class_install_property (gobject_class, PROP_INTENSITY,
- g_param_spec_float ("intensity", "Intensity",
- "Intensity of the echo", 0.0, 1.0,
- 0.0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS
- | GST_PARAM_CONTROLLABLE));
-
- g_object_class_install_property (gobject_class, PROP_FEEDBACK,
- g_param_spec_float ("feedback", "Feedback",
- "Amount of feedback", 0.0, 1.0,
- 0.0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS
- | GST_PARAM_CONTROLLABLE));
-
- audioself_class->setup = GST_DEBUG_FUNCPTR (gst_audio_echo_setup);
- basetransform_class->transform_ip =
- GST_DEBUG_FUNCPTR (gst_audio_echo_transform_ip);
- basetransform_class->stop = GST_DEBUG_FUNCPTR (gst_audio_echo_stop);
-}
-
-static void
-gst_audio_echo_init (GstAudioEcho * self, GstAudioEchoClass * klass)
-{
- self->delay = 1;
- self->max_delay = 1;
- self->intensity = 0.0;
- self->feedback = 0.0;
-
- gst_base_transform_set_in_place (GST_BASE_TRANSFORM (self), TRUE);
-}
-
-static void
-gst_audio_echo_finalize (GObject * object)
-{
- GstAudioEcho *self = GST_AUDIO_ECHO (object);
-
- g_free (self->buffer);
- self->buffer = NULL;
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_audio_echo_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstAudioEcho *self = GST_AUDIO_ECHO (object);
-
- switch (prop_id) {
- case PROP_DELAY:{
- guint64 max_delay, delay;
-
- GST_BASE_TRANSFORM_LOCK (self);
- delay = g_value_get_uint64 (value);
- max_delay = self->max_delay;
-
- if (delay > max_delay && GST_STATE (self) > GST_STATE_READY) {
- GST_WARNING_OBJECT (self, "New delay (%" GST_TIME_FORMAT ") "
- "is larger than maximum delay (%" GST_TIME_FORMAT ")",
- GST_TIME_ARGS (delay), GST_TIME_ARGS (max_delay));
- self->delay = max_delay;
- } else {
- self->delay = delay;
- self->max_delay = MAX (delay, max_delay);
- }
- GST_BASE_TRANSFORM_UNLOCK (self);
- }
- break;
- case PROP_MAX_DELAY:{
- guint64 max_delay, delay;
-
- GST_BASE_TRANSFORM_LOCK (self);
- max_delay = g_value_get_uint64 (value);
- delay = self->delay;
-
- if (GST_STATE (self) > GST_STATE_READY) {
- GST_ERROR_OBJECT (self, "Can't change maximum delay in"
- " PLAYING or PAUSED state");
- } else {
- self->delay = delay;
- self->max_delay = max_delay;
- }
- GST_BASE_TRANSFORM_UNLOCK (self);
- }
- break;
- case PROP_INTENSITY:{
- GST_BASE_TRANSFORM_LOCK (self);
- self->intensity = g_value_get_float (value);
- GST_BASE_TRANSFORM_UNLOCK (self);
- }
- break;
- case PROP_FEEDBACK:{
- GST_BASE_TRANSFORM_LOCK (self);
- self->feedback = g_value_get_float (value);
- GST_BASE_TRANSFORM_UNLOCK (self);
- }
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gst_audio_echo_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec)
-{
- GstAudioEcho *self = GST_AUDIO_ECHO (object);
-
- switch (prop_id) {
- case PROP_DELAY:
- GST_BASE_TRANSFORM_LOCK (self);
- g_value_set_uint64 (value, self->delay);
- GST_BASE_TRANSFORM_UNLOCK (self);
- break;
- case PROP_MAX_DELAY:
- GST_BASE_TRANSFORM_LOCK (self);
- g_value_set_uint64 (value, self->max_delay);
- GST_BASE_TRANSFORM_UNLOCK (self);
- break;
- case PROP_INTENSITY:
- GST_BASE_TRANSFORM_LOCK (self);
- g_value_set_float (value, self->intensity);
- GST_BASE_TRANSFORM_UNLOCK (self);
- break;
- case PROP_FEEDBACK:
- GST_BASE_TRANSFORM_LOCK (self);
- g_value_set_float (value, self->feedback);
- GST_BASE_TRANSFORM_UNLOCK (self);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-/* GstAudioFilter vmethod implementations */
-
-static gboolean
-gst_audio_echo_setup (GstAudioFilter * base, GstRingBufferSpec * format)
-{
- GstAudioEcho *self = GST_AUDIO_ECHO (base);
- gboolean ret = TRUE;
-
- if (format->type == GST_BUFTYPE_FLOAT && format->width == 32)
- self->process = (GstAudioEchoProcessFunc)
- gst_audio_echo_transform_float;
- else if (format->type == GST_BUFTYPE_FLOAT && format->width == 64)
- self->process = (GstAudioEchoProcessFunc)
- gst_audio_echo_transform_double;
- else
- ret = FALSE;
-
- g_free (self->buffer);
- self->buffer = NULL;
- self->buffer_pos = 0;
- self->buffer_size = 0;
- self->buffer_size_frames = 0;
-
- return ret;
-}
-
-static gboolean
-gst_audio_echo_stop (GstBaseTransform * base)
-{
- GstAudioEcho *self = GST_AUDIO_ECHO (base);
-
- g_free (self->buffer);
- self->buffer = NULL;
- self->buffer_pos = 0;
- self->buffer_size = 0;
- self->buffer_size_frames = 0;
-
- return TRUE;
-}
-
-#define TRANSFORM_FUNC(name, type) \
-static void \
-gst_audio_echo_transform_##name (GstAudioEcho * self, \
- type * data, guint num_samples) \
-{ \
- type *buffer = (type *) self->buffer; \
- guint channels = GST_AUDIO_FILTER (self)->format.channels; \
- guint rate = GST_AUDIO_FILTER (self)->format.rate; \
- guint i, j; \
- guint echo_index = self->buffer_size_frames - self->delay_frames; \
- gdouble echo_off = ((((gdouble) self->delay) * rate) / GST_SECOND) - self->delay_frames; \
- \
- if (echo_off < 0.0) \
- echo_off = 0.0; \
- \
- num_samples /= channels; \
- \
- for (i = 0; i < num_samples; i++) { \
- guint echo0_index = ((echo_index + self->buffer_pos) % self->buffer_size_frames) * channels; \
- guint echo1_index = ((echo_index + self->buffer_pos +1) % self->buffer_size_frames) * channels; \
- guint rbout_index = (self->buffer_pos % self->buffer_size_frames) * channels; \
- for (j = 0; j < channels; j++) { \
- gdouble in = data[i*channels + j]; \
- gdouble echo0 = buffer[echo0_index + j]; \
- gdouble echo1 = buffer[echo1_index + j]; \
- gdouble echo = echo0 + (echo1-echo0)*echo_off; \
- type out = in + self->intensity * echo; \
- \
- data[i*channels + j] = out; \
- \
- buffer[rbout_index + j] = in + self->feedback * echo; \
- } \
- self->buffer_pos = (self->buffer_pos + 1) % self->buffer_size_frames; \
- } \
-}
-
-TRANSFORM_FUNC (float, gfloat);
-TRANSFORM_FUNC (double, gdouble);
-
-/* GstBaseTransform vmethod implementations */
-static GstFlowReturn
-gst_audio_echo_transform_ip (GstBaseTransform * base, GstBuffer * buf)
-{
- GstAudioEcho *self = GST_AUDIO_ECHO (base);
- guint num_samples =
- GST_BUFFER_SIZE (buf) / (GST_AUDIO_FILTER (self)->format.width / 8);
-
- if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf)))
- gst_object_sync_values (G_OBJECT (self), GST_BUFFER_TIMESTAMP (buf));
-
- if (self->buffer == NULL) {
- guint width, rate, channels;
-
- width = GST_AUDIO_FILTER (self)->format.width / 8;
- rate = GST_AUDIO_FILTER (self)->format.rate;
- channels = GST_AUDIO_FILTER (self)->format.channels;
-
- self->delay_frames =
- MAX (gst_util_uint64_scale (self->delay, rate, GST_SECOND), 1);
- self->buffer_size_frames =
- MAX (gst_util_uint64_scale (self->max_delay, rate, GST_SECOND), 1);
-
- self->buffer_size = self->buffer_size_frames * width * channels;
- self->buffer = g_try_malloc0 (self->buffer_size);
- self->buffer_pos = 0;
-
- if (self->buffer == NULL) {
- GST_ERROR_OBJECT (self, "Failed to allocate %u bytes", self->buffer_size);
- return GST_FLOW_ERROR;
- }
- }
-
- self->process (self, GST_BUFFER_DATA (buf), num_samples);
-
- return GST_FLOW_OK;
-}