[Opalvoip-devel] G.726 AAL2 problem
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[Opalvoip-devel] G.726 AAL2 problem
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From: Eugene M. <em@HERMONLABS.com> - 2008-07-02 09:33:57
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Greetings!
I'm trying to make plugin for G.726 AAL2 codec (same as G.726 but with reverse bit packing). I copied codec defs from original G.726 but somehow OPAL doesn't recognise this plugin (I don't see it in codec list in trace). Any ideas?
#include <codec/opalplugin.h>
#include <stdlib.h>
#ifdef _WIN32
#include <malloc.h>
#endif
#include "inttypes.h"
#include "bitstream.h"
#include "g726.h"
#define SAMPLES_PER_FRAME 8
#define MAX_FRAMES_PER_PACKET 240 // Really milliseconds
#define PREF_FRAMES_PER_PACKET 30 // Really milliseconds
#define PAYLOAD_CODE 2 // used to be 2, uses dynamic payload type (RFC 3551)
/////////////////////////////////////////////////////////////////////////////
static void * create_codec(const struct PluginCodec_Definition * codec)
{
return g726_init( NULL, codec->bitsPerSec, 0, 1 );
}
static void destroy_codec(const struct PluginCodec_Definition * codec, void * _context)
{
g726_release( (g726_state_t*)_context );
}
static int encoder(const struct PluginCodec_Definition * codec,
void * _context,
const void * from,
unsigned * fromLen,
void * to,
unsigned * toLen,
unsigned int * flag)
{
*toLen = g726_decode( (g726_state_t*)_context, (int16_t*)from, (uint8_t*)to, *fromLen );
return 1;
}
static int decoder(const struct PluginCodec_Definition * codec,
void * _context,
const void * from,
unsigned * fromLen,
void * to,
unsigned * toLen,
unsigned int * flag)
{
*toLen = g726_encode( (g726_state_t*)_context, (uint8_t*)from, (int16_t*)to, *fromLen );
return 1;
}
/////////////////////////////////////////////////////////////////////////////
static struct PluginCodec_information licenseInfo = {
1084181196, // timestamp = Mon 10 May 2004 09:26:36 AM UTC
"Eugene Mednikov, Hermon Labs", // source code author
"1.0", // source code version
"em...@he...<mailto:em...@he...>", // source code email
"http://www.hermonlabs.com", // source code URL
"Copyright (C) 2008 by Hermon Labs, All Rights Reserved", // source code copyright
"MPL 1.0", // source code license
PluginCodec_License_MPL, // source code license
"ITU G.722", // codec description
"Steve Underwood", // codec author
NULL, // codec version
"st...@co...<mailto:st...@co...>", // codec email
NULL, // codec URL
NULL, // codec copyright information
NULL, // codec license
PluginCodec_License_LGPL // codec license code
};
/////////////////////////////////////////////////////////////////////////////
static const char L16Desc[] = { "L16" };
static const char sdpG726_16[] = { "G726-16" };
static const char sdpG726_24[] = { "G726-24" };
static const char sdpG726_32[] = { "G726-32" };
static const char sdpG726_40[] = { "G726-40" };
static const char g726_40[] = "AAL2-G.726-40k";
static const char g726_32[] = "AAL2-G.726-32k";
static const char g726_24[] = "AAL2-G.726-24k";
static const char g726_16[] = "AAL2-G.726-16k";
/////////////////////////////////////////////////////////////////////////////
#define EQUIVALENCE_COUNTRY_CODE 9
#define EQUIVALENCE_EXTENSION_CODE 0
#define EQUIVALENCE_MANUFACTURER_CODE 61
static struct PluginCodec_H323NonStandardCodecData g726_40_Cap =
{
NULL,
EQUIVALENCE_COUNTRY_CODE,
EQUIVALENCE_EXTENSION_CODE,
EQUIVALENCE_MANUFACTURER_CODE,
(const unsigned char *)g726_40, sizeof(g726_40)-1,
NULL
};
static struct PluginCodec_H323NonStandardCodecData g726_32_Cap =
{
NULL,
EQUIVALENCE_COUNTRY_CODE,
EQUIVALENCE_EXTENSION_CODE,
EQUIVALENCE_MANUFACTURER_CODE,
(const unsigned char *)g726_32, sizeof(g726_32)-1,
NULL
};
static struct PluginCodec_H323NonStandardCodecData g726_24_Cap =
{
NULL,
EQUIVALENCE_COUNTRY_CODE,
EQUIVALENCE_EXTENSION_CODE,
EQUIVALENCE_MANUFACTURER_CODE,
(const unsigned char *)g726_24, sizeof(g726_24)-1,
NULL
};
static struct PluginCodec_H323NonStandardCodecData g726_16_Cap =
{
NULL,
EQUIVALENCE_COUNTRY_CODE,
EQUIVALENCE_EXTENSION_CODE,
EQUIVALENCE_MANUFACTURER_CODE,
(const unsigned char *)g726_16, sizeof(g726_16)-1,
NULL
};
static struct PluginCodec_Definition g726CodecDefn[] =
{
{
// encoder 40k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudio | // audio codec
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeDynamic, // dynamic RTP type
g726_40, // text decription
L16Desc, // source format
g726_40, // destination format
0, // user data
8000, // samples per second
40000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
5, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_40, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
encoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_40_Cap // h323CapabilityData
},
{
// decoder 40k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudio | // audio codec
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeDynamic, // dynamic RTP type
g726_40, // text decription
g726_40, // source format
L16Desc, // destination format
0, // user data
8000, // samples per second
40000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
5, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_40, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
decoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_40_Cap // h323CapabilityData
},
////////////////////////////////////
{
// encoder 32k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudioStreamed | // audio codec
(4 << PluginCodec_BitsPerSamplePos) | // bits per sample
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeExplicit, // dynamic RTP type
g726_32, // text decription
L16Desc, // source format
g726_32, // destination format
0, // user data
8000, // samples per second
32000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
4, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_32, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
encoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_32_Cap // h323CapabilityData
},
{
// decoder 32k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudio | // audio codec
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeExplicit, // dynamic RTP type
g726_32, // text decription
g726_32, // source format
L16Desc, // destination format
0, // user data
8000, // samples per second
32000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
4, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_32, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
decoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_32_Cap // h323CapabilityData
},
////////////////////////////////////
{
// encoder 24k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudio | // audio codec
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeDynamic, // dynamic RTP type
g726_24, // text decription
L16Desc, // source format
g726_24, // destination format
0, // user data
8000, // samples per second
24000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
3, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_24, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
encoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_24_Cap // h323CapabilityData
},
{
// decoder 24k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudio | // audio codec
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeDynamic, // dynamic RTP type
g726_24, // text decription
g726_24, // source format
L16Desc, // destination format
0, // user data
8000, // samples per second
24000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
3, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_32, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
decoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_24_Cap // h323CapabilityData
},
////////////////////////////////////
{
// encoder 16k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudio | // audio codec
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeDynamic, // dynamic RTP type
g726_16, // text decription
L16Desc, // source format
g726_16, // destination format
0, // user data
8000, // samples per second
16000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
2, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_16, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
encoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_16_Cap // h323CapabilityData
},
{
// decoder 16k
PLUGIN_CODEC_VERSION, // codec API version
&licenseInfo, // license information
PluginCodec_MediaTypeAudio | // audio codec
PluginCodec_InputTypeRaw | // raw input data
PluginCodec_OutputTypeRaw | // raw output data
PluginCodec_RTPTypeDynamic, // dynamic RTP type
g726_16, // text decription
g726_16, // source format
L16Desc, // destination format
0, // user data
8000, // samples per second
16000, // raw bits per second
1000, // nanoseconds per frame
SAMPLES_PER_FRAME, // samples per frame
2, // bytes per frame
PREF_FRAMES_PER_PACKET, // recommended number of frames per packet
MAX_FRAMES_PER_PACKET, // maximum number of frames per packe
PAYLOAD_CODE, // IANA RTP payload code
sdpG726_16, // RTP payload name
create_codec, // create codec function
destroy_codec, // destroy codec
decoder, // encode/decode
NULL, // codec controls
PluginCodec_H323Codec_nonStandard, // h323CapabilityType
&g726_16_Cap // h323CapabilityData
}
};
PLUGIN_CODEC_IMPLEMENT_ALL(G726, g726CodecDefn, PLUGIN_CODEC_VERSION)
/////////////////////////////////////////////////////////////////////////////
Respectfully yours, Eugene Mednikov
SW Development Project Leader, IT manager
Hermon Labs
Phone: +972-4-6288001, 217
Mobile: +972-54-4520187
Fax: +972-4-6288277
em...@he...<mailto:em...@he...>
www.hermonlabs.com<http://www.hermonlabs.com/>
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