--- a/gst_plugins_good/gst/audiofx/audioamplify.c Fri Jul 09 16:26:45 2010 -0500
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,495 +0,0 @@
-/*
- * GStreamer
- * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
- * Copyright (C) 2006 Stefan Kost <ensonic@users.sf.net>
- *
- * 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-audioamplify
- *
- * Amplifies an audio stream by a given factor and allows the selection of different clipping modes.
- * The difference between the clipping modes is best evaluated by testing.
- * <title>Example launch line</title>
- * <refsect2>
- * |[
- * gst-launch audiotestsrc wave=saw ! audioamplify amplification=1.5 ! alsasink
- * gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audioamplify amplification=1.5 method=wrap-negative ! alsasink
- * gst-launch audiotestsrc wave=saw ! audioconvert ! audioamplify amplification=1.5 method=wrap-positive ! audioconvert ! alsasink
- * ]|
- * </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 "audioamplify.h"
-
-#define GST_CAT_DEFAULT gst_audio_amplify_debug
-GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
-
-static const GstElementDetails element_details =
-GST_ELEMENT_DETAILS ("Audio amplifier",
- "Filter/Effect/Audio",
- "Amplifies an audio stream by a given factor",
- "Sebastian Dröge <slomo@circular-chaos.org>");
-
-/* Filter signals and args */
-enum
-{
- /* FILL ME */
- LAST_SIGNAL
-};
-
-enum
-{
- PROP_0,
- PROP_AMPLIFICATION,
- PROP_CLIPPING_METHOD
-};
-
-enum
-{
- METHOD_CLIP = 0,
- METHOD_WRAP_NEGATIVE,
- METHOD_WRAP_POSITIVE,
- METHOD_NOCLIP,
- NUM_METHODS
-};
-
-#define GST_TYPE_AUDIO_AMPLIFY_CLIPPING_METHOD (gst_audio_amplify_clipping_method_get_type ())
-static GType
-gst_audio_amplify_clipping_method_get_type (void)
-{
- static GType gtype = 0;
-
- if (gtype == 0) {
- static const GEnumValue values[] = {
- {METHOD_CLIP, "Normal clipping (default)", "clip"},
- {METHOD_WRAP_NEGATIVE,
- "Push overdriven values back from the opposite side",
- "wrap-negative"},
- {METHOD_WRAP_POSITIVE, "Push overdriven values back from the same side",
- "wrap-positive"},
- {METHOD_NOCLIP, "No clipping", "none"},
- {0, NULL, NULL}
- };
-
- /* FIXME 0.11: rename to GstAudioAmplifyClippingMethod */
- gtype = g_enum_register_static ("GstAudioPanoramaClippingMethod", values);
- }
- return gtype;
-}
-
-#define ALLOWED_CAPS \
- "audio/x-raw-int," \
- " depth=(int)8," \
- " width=(int)8," \
- " endianness=(int)BYTE_ORDER," \
- " signed=(bool)TRUE," \
- " rate=(int)[1,MAX]," \
- " channels=(int)[1,MAX]; " \
- "audio/x-raw-int," \
- " depth=(int)16," \
- " width=(int)16," \
- " endianness=(int)BYTE_ORDER," \
- " signed=(bool)TRUE," \
- " rate=(int)[1,MAX]," \
- " channels=(int)[1,MAX]; " \
- "audio/x-raw-int," \
- " depth=(int)32," \
- " width=(int)32," \
- " endianness=(int)BYTE_ORDER," \
- " signed=(bool)TRUE," \
- " rate=(int)[1,MAX]," \
- " channels=(int)[1,MAX]; " \
- "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_amplify_debug, "audioamplify", 0, "audioamplify element");
-
-GST_BOILERPLATE_FULL (GstAudioAmplify, gst_audio_amplify, GstAudioFilter,
- GST_TYPE_AUDIO_FILTER, DEBUG_INIT);
-
-static gboolean gst_audio_amplify_set_process_function (GstAudioAmplify *
- filter, gint clipping, gint format, gint width);
-static void gst_audio_amplify_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec);
-static void gst_audio_amplify_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec);
-
-static gboolean gst_audio_amplify_setup (GstAudioFilter * filter,
- GstRingBufferSpec * format);
-static GstFlowReturn gst_audio_amplify_transform_ip (GstBaseTransform * base,
- GstBuffer * buf);
-
-#define MIN_gint8 G_MININT8
-#define MAX_gint8 G_MAXINT8
-#define MIN_gint16 G_MININT16
-#define MAX_gint16 G_MAXINT16
-#define MIN_gint32 G_MININT32
-#define MAX_gint32 G_MAXINT32
-
-#define MAKE_INT_FUNCS(type,largetype) \
-static void \
-gst_audio_amplify_transform_##type##_clip (GstAudioAmplify * filter, \
- void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) { \
- largetype val = *d * filter->amplification; \
- *d++ = CLAMP (val, MIN_##type, MAX_##type); \
- } \
-} \
-static void \
-gst_audio_amplify_transform_##type##_wrap_negative (GstAudioAmplify * filter, \
- void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) { \
- largetype val = *d * filter->amplification; \
- if (val > MAX_##type) \
- val = MIN_##type + (val - MIN_##type) % ((largetype) MAX_##type + 1 - \
- MIN_##type); \
- else if (val < MIN_##type) \
- val = MAX_##type - (MAX_##type - val) % ((largetype) MAX_##type + 1 - \
- MIN_##type); \
- *d++ = val; \
- } \
-} \
-static void \
-gst_audio_amplify_transform_##type##_wrap_positive (GstAudioAmplify * filter, \
- void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) { \
- largetype val = *d * filter->amplification; \
- do { \
- if (val > MAX_##type) \
- val = MAX_##type - (val - MAX_##type); \
- else if (val < MIN_##type) \
- val = MIN_##type + (MIN_##type - val); \
- else \
- break; \
- } while (1); \
- *d++ = val; \
- } \
-} \
-static void \
-gst_audio_amplify_transform_##type##_noclip (GstAudioAmplify * filter, \
- void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) \
- *d++ *= filter->amplification; \
-}
-
-#define MAKE_FLOAT_FUNCS(type) \
-static void \
-gst_audio_amplify_transform_##type##_clip (GstAudioAmplify * filter, \
- void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) { \
- type val = *d* filter->amplification; \
- *d++ = CLAMP (val, -1.0, +1.0); \
- } \
-} \
-static void \
-gst_audio_amplify_transform_##type##_wrap_negative (GstAudioAmplify * \
- filter, void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) { \
- type val = *d * filter->amplification; \
- do { \
- if (val > 1.0) \
- val = -1.0 + (val - 1.0); \
- else if (val < -1.0) \
- val = 1.0 - (1.0 - val); \
- else \
- break; \
- } while (1); \
- *d++ = val; \
- } \
-} \
-static void \
-gst_audio_amplify_transform_##type##_wrap_positive (GstAudioAmplify * filter, \
- void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) { \
- type val = *d* filter->amplification; \
- do { \
- if (val > 1.0) \
- val = 1.0 - (val - 1.0); \
- else if (val < -1.0) \
- val = -1.0 + (-1.0 - val); \
- else \
- break; \
- } while (1); \
- *d++ = val; \
- } \
-} \
-static void \
-gst_audio_amplify_transform_##type##_noclip (GstAudioAmplify * filter, \
- void * data, guint num_samples) \
-{ \
- type *d = data; \
- \
- while (num_samples--) \
- *d++ *= filter->amplification; \
-}
-
-/* *INDENT-OFF* */
-MAKE_INT_FUNCS (gint8,gint)
-MAKE_INT_FUNCS (gint16,gint)
-MAKE_INT_FUNCS (gint32,gint64)
-MAKE_FLOAT_FUNCS (gfloat)
-MAKE_FLOAT_FUNCS (gdouble)
-/* *INDENT-ON* */
-
-/* GObject vmethod implementations */
-
-static void
-gst_audio_amplify_base_init (gpointer klass)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
- GstCaps *caps;
-
- gst_element_class_set_details (element_class, &element_details);
-
- 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_amplify_class_init (GstAudioAmplifyClass * klass)
-{
- GObjectClass *gobject_class;
-
- gobject_class = (GObjectClass *) klass;
- gobject_class->set_property = gst_audio_amplify_set_property;
- gobject_class->get_property = gst_audio_amplify_get_property;
-
- g_object_class_install_property (gobject_class, PROP_AMPLIFICATION,
- g_param_spec_float ("amplification", "Amplification",
- "Factor of amplification", 0.0, G_MAXFLOAT,
- 1.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
-
- /**
- * GstAudioAmplify:clipping-method
- *
- * Clipping method: clip mode set values higher than the maximum to the
- * maximum. The wrap-negative mode pushes those values back from the
- * opposite side, wrap-positive pushes them back from the same side.
- *
- **/
- g_object_class_install_property (gobject_class, PROP_CLIPPING_METHOD,
- g_param_spec_enum ("clipping-method", "Clipping method",
- "Selects how to handle values higher than the maximum",
- GST_TYPE_AUDIO_AMPLIFY_CLIPPING_METHOD, METHOD_CLIP,
- G_PARAM_READWRITE));
-
- GST_AUDIO_FILTER_CLASS (klass)->setup =
- GST_DEBUG_FUNCPTR (gst_audio_amplify_setup);
- GST_BASE_TRANSFORM_CLASS (klass)->transform_ip =
- GST_DEBUG_FUNCPTR (gst_audio_amplify_transform_ip);
-}
-
-static void
-gst_audio_amplify_init (GstAudioAmplify * filter, GstAudioAmplifyClass * klass)
-{
- filter->amplification = 1.0;
- gst_audio_amplify_set_process_function (filter, METHOD_CLIP,
- GST_BUFTYPE_LINEAR, 16);
- gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), TRUE);
- gst_base_transform_set_gap_aware (GST_BASE_TRANSFORM (filter), TRUE);
-}
-
-static GstAudioAmplifyProcessFunc
-gst_audio_amplify_process_function (gint clipping, gint format, gint width)
-{
- static const struct process
- {
- gint format;
- gint width;
- gint clipping;
- GstAudioAmplifyProcessFunc func;
- } process[] = {
- {
- GST_BUFTYPE_FLOAT, 32, METHOD_CLIP,
- gst_audio_amplify_transform_gfloat_clip}, {
- GST_BUFTYPE_FLOAT, 32, METHOD_WRAP_NEGATIVE,
- gst_audio_amplify_transform_gfloat_wrap_negative}, {
- GST_BUFTYPE_FLOAT, 32, METHOD_WRAP_POSITIVE,
- gst_audio_amplify_transform_gfloat_wrap_positive}, {
- GST_BUFTYPE_FLOAT, 32, METHOD_NOCLIP,
- gst_audio_amplify_transform_gfloat_noclip}, {
- GST_BUFTYPE_FLOAT, 64, METHOD_CLIP,
- gst_audio_amplify_transform_gdouble_clip}, {
- GST_BUFTYPE_FLOAT, 64, METHOD_WRAP_NEGATIVE,
- gst_audio_amplify_transform_gdouble_wrap_negative}, {
- GST_BUFTYPE_FLOAT, 64, METHOD_WRAP_POSITIVE,
- gst_audio_amplify_transform_gdouble_wrap_positive}, {
- GST_BUFTYPE_FLOAT, 64, METHOD_NOCLIP,
- gst_audio_amplify_transform_gdouble_noclip}, {
- GST_BUFTYPE_LINEAR, 8, METHOD_CLIP, gst_audio_amplify_transform_gint8_clip}, {
- GST_BUFTYPE_LINEAR, 8, METHOD_WRAP_NEGATIVE,
- gst_audio_amplify_transform_gint8_wrap_negative}, {
- GST_BUFTYPE_LINEAR, 8, METHOD_WRAP_POSITIVE,
- gst_audio_amplify_transform_gint8_wrap_positive}, {
- GST_BUFTYPE_LINEAR, 8, METHOD_NOCLIP,
- gst_audio_amplify_transform_gint8_noclip}, {
- GST_BUFTYPE_LINEAR, 16, METHOD_CLIP,
- gst_audio_amplify_transform_gint16_clip}, {
- GST_BUFTYPE_LINEAR, 16, METHOD_WRAP_NEGATIVE,
- gst_audio_amplify_transform_gint16_wrap_negative}, {
- GST_BUFTYPE_LINEAR, 16, METHOD_WRAP_POSITIVE,
- gst_audio_amplify_transform_gint16_wrap_positive}, {
- GST_BUFTYPE_LINEAR, 16, METHOD_NOCLIP,
- gst_audio_amplify_transform_gint16_noclip}, {
- GST_BUFTYPE_LINEAR, 32, METHOD_CLIP,
- gst_audio_amplify_transform_gint32_clip}, {
- GST_BUFTYPE_LINEAR, 32, METHOD_WRAP_NEGATIVE,
- gst_audio_amplify_transform_gint32_wrap_negative}, {
- GST_BUFTYPE_LINEAR, 32, METHOD_WRAP_POSITIVE,
- gst_audio_amplify_transform_gint32_wrap_positive}, {
- GST_BUFTYPE_LINEAR, 32, METHOD_NOCLIP,
- gst_audio_amplify_transform_gint32_noclip}, {
- 0, 0, 0, NULL}
- };
- const struct process *p;
-
- for (p = process; p->func; p++)
- if (p->format == format && p->width == width && p->clipping == clipping)
- return p->func;
- return NULL;
-}
-
-static gboolean
-gst_audio_amplify_set_process_function (GstAudioAmplify * filter, gint
- clipping_method, gint format, gint width)
-{
- GstAudioAmplifyProcessFunc process;
-
- /* set processing function */
-
- process = gst_audio_amplify_process_function (clipping_method, format, width);
- if (!process) {
- GST_DEBUG ("wrong format");
- return FALSE;
- }
-
- filter->process = process;
- filter->clipping_method = clipping_method;
- filter->format = format;
- filter->width = width;
-
- return TRUE;
-}
-
-static void
-gst_audio_amplify_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (object);
-
- switch (prop_id) {
- case PROP_AMPLIFICATION:
- filter->amplification = g_value_get_float (value);
- gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter),
- filter->amplification == 1.0);
- break;
- case PROP_CLIPPING_METHOD:
- gst_audio_amplify_set_process_function (filter, g_value_get_enum (value),
- filter->format, filter->width);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gst_audio_amplify_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec)
-{
- GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (object);
-
- switch (prop_id) {
- case PROP_AMPLIFICATION:
- g_value_set_float (value, filter->amplification);
- break;
- case PROP_CLIPPING_METHOD:
- g_value_set_enum (value, filter->clipping_method);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-/* GstAudioFilter vmethod implementations */
-static gboolean
-gst_audio_amplify_setup (GstAudioFilter * base, GstRingBufferSpec * format)
-{
- GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (base);
-
- return gst_audio_amplify_set_process_function (filter,
- filter->clipping_method, format->type, format->width);
-}
-
-/* GstBaseTransform vmethod implementations */
-static GstFlowReturn
-gst_audio_amplify_transform_ip (GstBaseTransform * base, GstBuffer * buf)
-{
- GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (base);
- guint num_samples =
- GST_BUFFER_SIZE (buf) / (GST_AUDIO_FILTER (filter)->format.width / 8);
-
- if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf)))
- gst_object_sync_values (G_OBJECT (filter), GST_BUFFER_TIMESTAMP (buf));
-
- if (gst_base_transform_is_passthrough (base) ||
- G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_GAP)))
- return GST_FLOW_OK;
-
- filter->process (filter, GST_BUFFER_DATA (buf), num_samples);
-
- return GST_FLOW_OK;
-}