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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@353 d0543943-73ff-0310-b7d9-9358b9ac24b2
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Anthony Minessale committed 2006-01-13 14:08:37 +00:00
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src/mod/codecs/mod_l16/mod_rawaudio.c
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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthmct@yahoo.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthmct@yahoo.com>
*
*
* mod_rawaudio.c -- Raw Signed Linear Codec
*
*/
#include <switch.h>
#include <libresample.h>
static const char modname[] = "mod_rawaudio";
static switch_status switch_raw_init(switch_codec *codec, switch_codec_flag flags, const struct switch_codec_settings *codec_settings)
{
int encoding, decoding;
struct raw_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
} else {
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status switch_raw_encode(switch_codec *codec,
switch_codec *other_codec,
void *decoded_data,
size_t decoded_data_len,
int decoded_rate,
void *encoded_data,
size_t *encoded_data_len,
int *encoded_rate,
unsigned int *flag)
{
/* NOOP indicates that the audio in is already the same as the audio out, so no conversion was necessary.*/
if (codec->implementation->samples_per_second != other_codec->implementation->samples_per_second) {
memcpy(encoded_data, decoded_data, decoded_data_len);
*encoded_data_len = decoded_data_len;
return SWITCH_STATUS_RESAMPLE;
}
return SWITCH_STATUS_NOOP;
}
static switch_status switch_raw_decode(switch_codec *codec,
switch_codec *other_codec,
void *encoded_data,
size_t encoded_data_len,
int encoded_rate,
void *decoded_data,
size_t *decoded_data_len,
int *decoded_rate,
unsigned int *flag)
{
if (codec->implementation->samples_per_second != other_codec->implementation->samples_per_second) {
memcpy(decoded_data, encoded_data, encoded_data_len);
*decoded_data_len = encoded_data_len;
return SWITCH_STATUS_RESAMPLE;
}
return SWITCH_STATUS_NOOP;
}
static switch_status switch_raw_destroy(switch_codec *codec)
{
return SWITCH_STATUS_SUCCESS;
}
static const switch_codec_implementation raw_32k_implementation = {
/*.samples_per_second = */ 32000,
/*.bits_per_second = */ 512000,
/*.microseconds_per_frame = */ 20000,
/*.samples_per_frame = */ 640,
/*.bytes_per_frame = */ 1280,
/*.encoded_bytes_per_frame = */ 1280,
/*.number_of_channels = */ 1,
/*.pref_frames_per_packet = */ 1,
/*.max_frames_per_packet = */ 1,
/*.init = */ switch_raw_init,
/*.encode = */ switch_raw_encode,
/*.decode = */ switch_raw_decode,
/*.destroy = */ switch_raw_destroy
};
static const switch_codec_implementation raw_22k_implementation = {
/*.samples_per_second = */ 22050,
/*.bits_per_second = */ 352800,
/*.microseconds_per_frame = */ 20000,
/*.samples_per_frame = */ 441,
/*.bytes_per_frame = */ 882,
/*.encoded_bytes_per_frame = */ 882,
/*.number_of_channels = */ 1,
/*.pref_frames_per_packet = */ 1,
/*.max_frames_per_packet = */ 1,
/*.init = */ switch_raw_init,
/*.encode = */ switch_raw_encode,
/*.decode = */ switch_raw_decode,
/*.destroy = */ switch_raw_destroy,
/*.next = */ &raw_32k_implementation
};
static const switch_codec_implementation raw_16k_implementation = {
/*.samples_per_second = */ 16000,
/*.bits_per_second = */ 256000,
/*.microseconds_per_frame = */ 20000,
/*.samples_per_frame = */ 320,
/*.bytes_per_frame = */ 640,
/*.encoded_bytes_per_frame = */ 640,
/*.number_of_channels = */ 1,
/*.pref_frames_per_packet = */ 1,
/*.max_frames_per_packet = */ 1,
/*.init = */ switch_raw_init,
/*.encode = */ switch_raw_encode,
/*.decode = */ switch_raw_decode,
/*.destroy = */ switch_raw_destroy,
/*.next = */ &raw_22k_implementation
};
static const switch_codec_implementation raw_8k_implementation = {
/*.samples_per_second = */ 8000,
/*.bits_per_second = */ 128000,
/*.microseconds_per_frame = */ 20000,
/*.samples_per_frame = */ 160,
/*.bytes_per_frame = */ 320,
/*.encoded_bytes_per_frame = */ 320,
/*.number_of_channels = */ 1,
/*.pref_frames_per_packet = */ 1,
/*.max_frames_per_packet = */ 1,
/*.init = */ switch_raw_init,
/*.encode = */ switch_raw_encode,
/*.decode = */ switch_raw_decode,
/*.destroy = */ switch_raw_destroy,
/*.next = */ &raw_16k_implementation
};
static const switch_codec_implementation raw_8k_30ms_implementation = {
/*.samples_per_second*/ 8000,
/*.bits_per_second*/ 128000,
/*.microseconds_per_frame*/ 30000,
/*.samples_per_frame*/ 240,
/*.bytes_per_frame*/ 480,
/*.encoded_bytes_per_frame*/ 480,
/*.number_of_channels*/ 1,
/*.pref_frames_per_packet*/ 1,
/*.max_frames_per_packet*/ 1,
/*.init*/ switch_raw_init,
/*.encode*/ switch_raw_encode,
/*.decode*/ switch_raw_decode,
/*.destroy*/ switch_raw_destroy,
/*.next*/ &raw_8k_implementation
};
static const switch_codec_interface raw_codec_interface = {
/*.interface_name*/ "raw signed linear (16 bit)",
/*.codec_type*/ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode*/ 10,
/*.iananame*/ "L16",
/*.implementations*/ &raw_8k_30ms_implementation
};
static switch_loadable_module_interface raw_module_interface = {
/*.module_name*/ modname,
/*.endpoint_interface*/ NULL,
/*.timer_interface*/ NULL,
/*.dialplan_interface*/ NULL,
/*.codec_interface*/ &raw_codec_interface,
/*.application_interface*/ NULL,
/*.api_interface*/ NULL,
///*.file_interface*/ &raw_file_interface
};
SWITCH_MOD_DECLARE(switch_status) switch_module_load(const switch_loadable_module_interface **interface, char *filename) {
/* connect my internal structure to the blank pointer passed to me */
*interface = &raw_module_interface;
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
src/mod/codecs/mod_l16/mod_rawaudio.vcproj
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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
ProjectType="Visual C++"
Version="8.00"
Name="mod_rawaudio"
ProjectGUID="{5844AFE1-AA3E-4BDB-A9EF-119AEF19DF88}"
RootNamespace="mod_rawaudio"
Keyword="Win32Proj"
>
<Platforms>
<Platform
Name="Win32"
/>
</Platforms>
<ToolFiles>
</ToolFiles>
<Configurations>
<Configuration
Name="Debug|Win32"
OutputDirectory="Debug"
IntermediateDirectory="Debug"
ConfigurationType="2"
InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC71.vsprops"
CharacterSet="2"
>
<Tool
Name="VCPreBuildEventTool"
CommandLine="cscript /nologo $(InputDir)..\..\..\..\w32\vsnet\getlibs.vbs Mod_rawaudio Debug"
/>
<Tool
Name="VCCustomBuildTool"
/>
<Tool
Name="VCXMLDataGeneratorTool"
/>
<Tool
Name="VCWebServiceProxyGeneratorTool"
/>
<Tool
Name="VCMIDLTool"
/>
<Tool
Name="VCCLCompilerTool"
Optimization="0"
AdditionalIncludeDirectories="&quot;$(InputDir)..\..\..\include&quot;;&quot;$(InputDir)include&quot;;&quot;$(InputDir)..\..\..\..\libs\include&quot;;&quot;$(InputDir)..\..\..\..\libs\libresample\include&quot;"
PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;MOD_EXPORTS"
MinimalRebuild="true"
BasicRuntimeChecks="3"
RuntimeLibrary="1"
UsePrecompiledHeader="0"
WarningLevel="3"
Detect64BitPortabilityProblems="true"
DebugInformationFormat="4"
/>
<Tool
Name="VCManagedResourceCompilerTool"
/>
<Tool
Name="VCResourceCompilerTool"
/>
<Tool
Name="VCPreLinkEventTool"
/>
<Tool
Name="VCLinkerTool"
AdditionalDependencies="libresampled.lib"
OutputFile="..\..\..\..\w32\vsnet\$(OutDir)/mod/mod_rawaudio.dll"
LinkIncremental="2"
AdditionalLibraryDirectories="&quot;$(InputDir)..\..\..\..\libs\libresample\win&quot;"
GenerateDebugInformation="true"
ProgramDatabaseFile="$(OutDir)/mod_rawaudio.pdb"
SubSystem="2"
ImportLibrary="$(OutDir)/mod_rawaudio.lib"
TargetMachine="1"
/>
<Tool
Name="VCALinkTool"
/>
<Tool
Name="VCManifestTool"
/>
<Tool
Name="VCXDCMakeTool"
/>
<Tool
Name="VCBscMakeTool"
/>
<Tool
Name="VCFxCopTool"
/>
<Tool
Name="VCAppVerifierTool"
/>
<Tool
Name="VCWebDeploymentTool"
/>
<Tool
Name="VCPostBuildEventTool"
/>
</Configuration>
<Configuration
Name="Release|Win32"
OutputDirectory="Release"
IntermediateDirectory="Release"
ConfigurationType="2"
InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC71.vsprops"
CharacterSet="2"
>
<Tool
Name="VCPreBuildEventTool"
CommandLine="cscript /nologo $(InputDir)..\..\..\..\w32\vsnet\getlibs.vbs Mod_rawaudio Release"
/>
<Tool
Name="VCCustomBuildTool"
/>
<Tool
Name="VCXMLDataGeneratorTool"
/>
<Tool
Name="VCWebServiceProxyGeneratorTool"
/>
<Tool
Name="VCMIDLTool"
/>
<Tool
Name="VCCLCompilerTool"
AdditionalIncludeDirectories="&quot;$(InputDir)..\..\..\include&quot;;&quot;$(InputDir)include&quot;;&quot;$(InputDir)..\..\..\..\libs\include&quot;;&quot;$(InputDir)..\..\..\..\libs\libresample\include&quot;"
PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;MOD_EXPORTS"
RuntimeLibrary="0"
UsePrecompiledHeader="0"
WarningLevel="3"
Detect64BitPortabilityProblems="true"
DebugInformationFormat="3"
/>
<Tool
Name="VCManagedResourceCompilerTool"
/>
<Tool
Name="VCResourceCompilerTool"
/>
<Tool
Name="VCPreLinkEventTool"
/>
<Tool
Name="VCLinkerTool"
AdditionalDependencies="libresample.lib"
OutputFile="..\..\..\..\w32\vsnet\$(OutDir)/mod/mod_rawaudio.dll"
LinkIncremental="1"
AdditionalLibraryDirectories="&quot;$(InputDir)..\..\..\..\libs\libresample\win&quot;"
GenerateDebugInformation="true"
SubSystem="2"
OptimizeReferences="2"
EnableCOMDATFolding="2"
ImportLibrary="$(OutDir)/mod_rawaudio.lib"
TargetMachine="1"
/>
<Tool
Name="VCALinkTool"
/>
<Tool
Name="VCManifestTool"
/>
<Tool
Name="VCXDCMakeTool"
/>
<Tool
Name="VCBscMakeTool"
/>
<Tool
Name="VCFxCopTool"
/>
<Tool
Name="VCAppVerifierTool"
/>
<Tool
Name="VCWebDeploymentTool"
/>
<Tool
Name="VCPostBuildEventTool"
/>
</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=".\mod_rawaudio.c"
>
</File>
</Filter>
<Filter
Name="Header Files"
Filter="h;hpp;hxx;hm;inl;inc;xsd"
UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
>
</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>