+++ /dev/null
-/* GStreamer
- * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2000 Wim Taymans <wtay@chello.be>
- * 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
- *
- * gstsinesrc.c:
- *
- * 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-#include <gst/controller/gstcontroller.h>
-
-#include "gstsinesrc.h"
-
-
-GstElementDetails gst_sinesrc_details = {
- "Sine-wave src",
- "Source/Audio",
- "Create a sine wave of a given frequency and volume",
- "Erik Walthinsen <omega@cse.ogi.edu>"
-};
-
-
-enum
-{
- PROP_0,
- PROP_SAMPLES_PER_BUFFER,
- PROP_FREQ,
- PROP_VOLUME,
- PROP_IS_LIVE,
- PROP_TIMESTAMP_OFFSET,
-};
-
-
-static GstStaticPadTemplate gst_sinesrc_src_template =
-GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("audio/x-raw-int, "
- "endianness = (int) BYTE_ORDER, "
- "signed = (boolean) true, "
- "width = (int) 16, "
- "depth = (int) 16, " "rate = (int) [ 1, MAX ], " "channels = (int) 1")
- );
-
-
-GST_BOILERPLATE (GstSineSrc, gst_sinesrc, GstBaseSrc, GST_TYPE_BASE_SRC);
-
-
-static void gst_sinesrc_set_property (GObject * object,
- guint prop_id, const GValue * value, GParamSpec * pspec);
-static void gst_sinesrc_get_property (GObject * object,
- guint prop_id, GValue * value, GParamSpec * pspec);
-
-static gboolean gst_sinesrc_setcaps (GstBaseSrc * basesrc, GstCaps * caps);
-static void gst_sinesrc_src_fixate (GstPad * pad, GstCaps * caps);
-
-static const GstQueryType *gst_sinesrc_get_query_types (GstPad * pad);
-static gboolean gst_sinesrc_src_query (GstPad * pad, GstQuery * query);
-
-static void gst_sinesrc_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
- GstClockTime * start, GstClockTime * end);
-static GstFlowReturn gst_sinesrc_create (GstBaseSrc * basesrc, guint64 offset,
- guint length, GstBuffer ** buffer);
-static gboolean gst_sinesrc_start (GstBaseSrc * basesrc);
-static gboolean gst_sinesrc_newsegment (GstBaseSrc * basesrc);
-
-static void
-gst_sinesrc_base_init (gpointer g_class)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_sinesrc_src_template));
- gst_element_class_set_details (element_class, &gst_sinesrc_details);
-}
-
-static void
-gst_sinesrc_class_init (GstSineSrcClass * klass)
-{
- GObjectClass *gobject_class;
- GstBaseSrcClass *gstbasesrc_class;
-
- gobject_class = (GObjectClass *) klass;
- gstbasesrc_class = (GstBaseSrcClass *) klass;
-
- gobject_class->set_property = gst_sinesrc_set_property;
- gobject_class->get_property = gst_sinesrc_get_property;
-
- g_object_class_install_property (gobject_class,
- PROP_SAMPLES_PER_BUFFER,
- g_param_spec_int ("samplesperbuffer", "Samples per buffer",
- "Number of samples in each outgoing buffer",
- 1, G_MAXINT, 1024, G_PARAM_READWRITE));
- g_object_class_install_property (gobject_class, PROP_FREQ,
- g_param_spec_double ("freq", "Frequency", "Frequency of sine source",
- 0.0, 20000.0, 440.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
- g_object_class_install_property (gobject_class, PROP_VOLUME,
- g_param_spec_double ("volume", "Volume", "Volume",
- 0.0, 1.0, 0.8, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
- g_object_class_install_property (gobject_class, PROP_IS_LIVE,
- g_param_spec_boolean ("is-live", "Is Live",
- "Whether to act as a live source", FALSE, G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass),
- PROP_TIMESTAMP_OFFSET,
- g_param_spec_int64 ("timestamp-offset", "Timestamp offset",
- "An offset added to timestamps set on buffers (in ns)", G_MININT64,
- G_MAXINT64, 0, G_PARAM_READWRITE));
-
- gstbasesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_sinesrc_setcaps);
- gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_sinesrc_start);
- gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_sinesrc_create);
- gstbasesrc_class->get_times = GST_DEBUG_FUNCPTR (gst_sinesrc_get_times);
- gstbasesrc_class->newsegment = GST_DEBUG_FUNCPTR (gst_sinesrc_newsegment);
-}
-
-static void
-gst_sinesrc_init (GstSineSrc * src, GstSineSrcClass * g_class)
-{
- GstPad *pad = GST_BASE_SRC_PAD (src);
-
- gst_pad_set_fixatecaps_function (pad, gst_sinesrc_src_fixate);
- gst_pad_set_query_function (pad, gst_sinesrc_src_query);
- gst_pad_set_query_type_function (pad, gst_sinesrc_get_query_types);
-
- src->samplerate = 44100;
- src->volume = 1.0;
- src->freq = 440.0;
- gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
-
- src->samples_per_buffer = 1024;
- src->timestamp = G_GINT64_CONSTANT (0);
- src->offset = G_GINT64_CONSTANT (0);
- src->timestamp_offset = G_GINT64_CONSTANT (0);
-}
-
-static void
-gst_sinesrc_src_fixate (GstPad * pad, GstCaps * caps)
-{
- GstStructure *structure;
-
- structure = gst_caps_get_structure (caps, 0);
-
- gst_structure_fixate_field_nearest_int (structure, "rate", 44100);
-}
-
-static gboolean
-gst_sinesrc_setcaps (GstBaseSrc * basesrc, GstCaps * caps)
-{
- GstSineSrc *sinesrc;
- const GstStructure *structure;
- gboolean ret;
-
- sinesrc = GST_SINESRC (basesrc);
-
- structure = gst_caps_get_structure (caps, 0);
- ret = gst_structure_get_int (structure, "rate", &sinesrc->samplerate);
-
- return ret;
-}
-
-static const GstQueryType *
-gst_sinesrc_get_query_types (GstPad * pad)
-{
- static const GstQueryType query_types[] = {
- GST_QUERY_POSITION,
- GST_QUERY_DURATION,
- 0,
- };
-
- return query_types;
-}
-
-static gboolean
-gst_sinesrc_src_query (GstPad * pad, GstQuery * query)
-{
- gboolean res = FALSE;
- GstSineSrc *src;
-
- src = GST_SINESRC (GST_PAD_PARENT (pad));
-
- switch (GST_QUERY_TYPE (query)) {
- case GST_QUERY_POSITION:
- {
- GstFormat format;
- gint64 current;
-
- gst_query_parse_position (query, &format, NULL);
-
- switch (format) {
- case GST_FORMAT_TIME:
- current = src->timestamp;
- res = TRUE;
- break;
- case GST_FORMAT_DEFAULT: /* samples */
- current = src->offset / 2; /* 16bpp audio */
- res = TRUE;
- break;
- case GST_FORMAT_BYTES:
- current = src->offset;
- res = TRUE;
- break;
- default:
- break;
- }
- if (res) {
- gst_query_set_position (query, format, current);
- }
- break;
- }
- case GST_QUERY_DURATION:
- {
- GstFormat format;
-
- gst_query_parse_duration (query, &format, NULL);
- if (format == GST_FORMAT_TIME && GST_BASE_SRC (src)->num_buffers > 0) {
- gst_query_set_duration (query, GST_FORMAT_TIME, GST_SECOND *
- GST_BASE_SRC (src)->num_buffers * src->samples_per_buffer /
- src->samplerate);
- res = TRUE;
- } else {
- gst_query_set_duration (query, format, -1);
- }
- break;
- }
- default:
- break;
- }
-
- return res;
-}
-
-static void
-gst_sinesrc_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
- GstClockTime * start, GstClockTime * end)
-{
- /* for live sources, sync on the timestamp of the buffer */
- if (gst_base_src_is_live (basesrc)) {
- GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
-
- if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
- /* get duration to calculate end time */
- GstClockTime duration = GST_BUFFER_DURATION (buffer);
-
- if (GST_CLOCK_TIME_IS_VALID (duration)) {
- *end = timestamp + duration;
- }
- *start = timestamp;
- }
- } else {
- *start = -1;
- *end = -1;
- }
-}
-
-static GstFlowReturn
-gst_sinesrc_create (GstBaseSrc * basesrc, guint64 offset,
- guint length, GstBuffer ** buffer)
-{
- GstSineSrc *src;
- GstBuffer *buf;
- guint tdiff;
- gdouble step;
- gint16 *samples;
- gint i;
-
- src = GST_SINESRC (basesrc);
-
- if (!src->tags_pushed) {
- GstTagList *taglist;
- GstEvent *event;
-
- taglist = gst_tag_list_new ();
-
- gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND,
- GST_TAG_DESCRIPTION, "sine wave", NULL);
-
- event = gst_event_new_tag (taglist);
- gst_pad_push_event (basesrc->srcpad, event);
- src->tags_pushed = TRUE;
- }
-
- tdiff = src->samples_per_buffer * GST_SECOND / src->samplerate;
-
- buf = gst_buffer_new_and_alloc (src->samples_per_buffer * sizeof (gint16));
- gst_buffer_set_caps (buf, GST_PAD_CAPS (basesrc->srcpad));
-
- GST_BUFFER_TIMESTAMP (buf) = src->timestamp + src->timestamp_offset;
- /* offset is the number of samples */
- GST_BUFFER_OFFSET (buf) = src->offset;
- GST_BUFFER_OFFSET_END (buf) = src->offset + src->samples_per_buffer;
- GST_BUFFER_DURATION (buf) = tdiff;
-
- gst_object_sync_values (G_OBJECT (src), src->timestamp);
-
- samples = (gint16 *) GST_BUFFER_DATA (buf);
-
- src->timestamp += tdiff;
- src->offset += src->samples_per_buffer;
-
- step = 2 * M_PI * src->freq / src->samplerate;
-
- for (i = 0; i < src->samples_per_buffer; i++) {
- src->accumulator += step;
- if (src->accumulator >= 2 * M_PI)
- src->accumulator -= 2 * M_PI;
-
- samples[i] = sin (src->accumulator) * src->volume * 32767.0;
- }
-
- *buffer = buf;
-
- return GST_FLOW_OK;
-}
-
-static void
-gst_sinesrc_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstSineSrc *src = GST_SINESRC (object);
-
- switch (prop_id) {
- case PROP_SAMPLES_PER_BUFFER:
- src->samples_per_buffer = g_value_get_int (value);
- break;
- case PROP_FREQ:
- src->freq = g_value_get_double (value);
- break;
- case PROP_VOLUME:
- src->volume = g_value_get_double (value);
- break;
- case PROP_IS_LIVE:
- gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value));
- break;
- case PROP_TIMESTAMP_OFFSET:
- src->timestamp_offset = g_value_get_int64 (value);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gst_sinesrc_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec)
-{
- GstSineSrc *src = GST_SINESRC (object);
-
- switch (prop_id) {
- case PROP_SAMPLES_PER_BUFFER:
- g_value_set_int (value, src->samples_per_buffer);
- break;
- case PROP_FREQ:
- g_value_set_double (value, src->freq);
- break;
- case PROP_VOLUME:
- g_value_set_double (value, src->volume);
- break;
- case PROP_IS_LIVE:
- g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src)));
- break;
- case PROP_TIMESTAMP_OFFSET:
- g_value_set_int64 (value, src->timestamp_offset);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static gboolean
-gst_sinesrc_newsegment (GstBaseSrc * basesrc)
-{
- GstSineSrc *src = GST_SINESRC (basesrc);
- GstEvent *event;
- gint64 start, end;
-
- if (basesrc->num_buffers_left > 0) {
- start = src->timestamp;
- end = start + GST_SECOND * basesrc->num_buffers_left *
- src->samples_per_buffer / src->samplerate;
- } else {
- start = src->timestamp;
- end = GST_CLOCK_TIME_NONE;
- }
-
- GST_DEBUG_OBJECT (basesrc, "Sending newsegment from %" GST_TIME_FORMAT
- " to %" GST_TIME_FORMAT, GST_TIME_ARGS (start), GST_TIME_ARGS (end));
-
- event =
- gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, start, end, 0);
-
- return gst_pad_push_event (basesrc->srcpad, event);
-}
-
-static gboolean
-gst_sinesrc_start (GstBaseSrc * basesrc)
-{
- GstSineSrc *src = GST_SINESRC (basesrc);
-
- src->timestamp = G_GINT64_CONSTANT (0);
- src->offset = G_GINT64_CONSTANT (0);
-
- return TRUE;
-}
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
- return gst_element_register (plugin, "sinesrc",
- GST_RANK_NONE, GST_TYPE_SINESRC);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "sine",
- "Sine audio wave generator",
- plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
+++ /dev/null
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
- ProjectType="Visual C++"
- Version="7.10"
- Name="sinesrc"
- ProjectGUID="{979C216F-0ACF-4956-AE00-055A42D678C9}"
- Keyword="Win32Proj">
- <Platforms>
- <Platform
- Name="Win32"/>
- </Platforms>
- <Configurations>
- <Configuration
- Name="Debug|Win32"
- OutputDirectory="../../win32/Debug"
- IntermediateDirectory="../../win32/Debug"
- ConfigurationType="2"
- CharacterSet="2">
- <Tool
- Name="VCCLCompilerTool"
- Optimization="0"
- AdditionalIncludeDirectories="../../../gstreamer/win32;../../../gstreamer;../../../gstreamer/libs;../../../glib;../../../glib/glib;../../../glib/gmodule;"../../gst-libs";../../../popt/include;../../../libxml2/include/libxml2"
- PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;sinesrc_EXPORTS;HAVE_CONFIG_H;_USE_MATH_DEFINES"
- MinimalRebuild="TRUE"
- BasicRuntimeChecks="3"
- RuntimeLibrary="3"
- UsePrecompiledHeader="0"
- WarningLevel="3"
- Detect64BitPortabilityProblems="TRUE"
- DebugInformationFormat="4"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLinkerTool"
- AdditionalDependencies="glib-2.0.lib gmodule-2.0.lib gthread-2.0.lib gobject-2.0.lib libgstreamer.lib gstbytestream.lib iconv.lib intl.lib"
- OutputFile="$(OutDir)/gstsinesrc.dll"
- LinkIncremental="2"
- AdditionalLibraryDirectories="../../../gstreamer/win32/Debug;../../../glib/glib;../../../glib/gmodule;../../../glib/gthread;../../../glib/gobject;../../../gettext/lib;../../../libiconv/lib"
- ModuleDefinitionFile=""
- GenerateDebugInformation="TRUE"
- ProgramDatabaseFile="$(OutDir)/sinesrc.pdb"
- SubSystem="2"
- OptimizeReferences="2"
- ImportLibrary="$(OutDir)/gstsinesrc.lib"
- TargetMachine="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"
- CommandLine="copy /Y $(TargetPath) c:\gstreamer\plugins"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- <Configuration
- Name="Release|Win32"
- OutputDirectory="../../win32/Release"
- IntermediateDirectory="../../win32/Release"
- ConfigurationType="2"
- CharacterSet="2">
- <Tool
- Name="VCCLCompilerTool"
- AdditionalIncludeDirectories="../../../gstreamer/win32;../../../gstreamer;../../../gstreamer/libs;../../../glib;../../../glib/glib;../../../glib/gmodule;"../../gst-libs";../../../popt/include;../../../libxml2/include/libxml2"
- PreprocessorDefinitions="WIN32;NDEBUG;GST_DISABLE_GST_DEBUG;_WINDOWS;_USRDLL;sinesrc_EXPORTS;HAVE_CONFIG_H;_USE_MATH_DEFINES"
- RuntimeLibrary="2"
- UsePrecompiledHeader="0"
- WarningLevel="3"
- Detect64BitPortabilityProblems="TRUE"
- DebugInformationFormat="3"/>
- <Tool
- Name="VCCustomBuildTool"/>
- <Tool
- Name="VCLinkerTool"
- AdditionalDependencies="glib-2.0.lib gmodule-2.0.lib gthread-2.0.lib gobject-2.0.lib libgstreamer.lib gstbytestream.lib iconv.lib intl.lib"
- OutputFile="$(OutDir)/gstsinesrc.dll"
- LinkIncremental="1"
- AdditionalLibraryDirectories="../../../gstreamer/win32/Release;../../../glib/glib;../../../glib/gmodule;../../../glib/gthread;../../../glib/gobject;../../../gettext/lib;../../../libiconv/lib"
- ModuleDefinitionFile=""
- GenerateDebugInformation="TRUE"
- SubSystem="2"
- OptimizeReferences="2"
- EnableCOMDATFolding="2"
- ImportLibrary="$(OutDir)/gstsinesrc.lib"
- TargetMachine="1"/>
- <Tool
- Name="VCMIDLTool"/>
- <Tool
- Name="VCPostBuildEventTool"
- CommandLine="copy /Y $(TargetPath) c:\gstreamer\plugins"/>
- <Tool
- Name="VCPreBuildEventTool"/>
- <Tool
- Name="VCPreLinkEventTool"/>
- <Tool
- Name="VCResourceCompilerTool"/>
- <Tool
- Name="VCWebServiceProxyGeneratorTool"/>
- <Tool
- Name="VCXMLDataGeneratorTool"/>
- <Tool
- Name="VCWebDeploymentTool"/>
- <Tool
- Name="VCManagedWrapperGeneratorTool"/>
- <Tool
- Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
- </Configuration>
- </Configurations>
- <References>
- </References>
- <Files>
- <Filter
- Name="Source Files"
- Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
- UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
- <File
- RelativePath=".\gstsinesrc.c">
- </File>
- </Filter>
- <Filter
- Name="Header Files"
- Filter="h;hpp;hxx;hm;inl;inc;xsd"
- UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
- <File
- RelativePath=".\gstsinesrc.h">
- </File>
- </Filter>
- <Filter
- Name="Resource Files"
- Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx"
- UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}">
- </Filter>
- </Files>
- <Globals>
- </Globals>
-</VisualStudioProject>
projects / platform / upstream / gstreamer.git / commitdiff