codec_builtin.c File Reference

Built-in supported codecs. More...

#include "asterisk.h"
#include "asterisk/ilbc.h"
#include "asterisk/logger.h"
#include "asterisk/astobj2.h"
#include "asterisk/codec.h"
#include "asterisk/format.h"
#include "asterisk/format_cache.h"
#include "asterisk/frame.h"
#include "asterisk/smoother.h"

Include dependency graph for codec_builtin.c:

Go to the source code of this file.

Macros
#define	CODEC_REGISTER_AND_CACHE(codec)
#define	CODEC_REGISTER_AND_CACHE_NAMED(fmt_name, codec)
#define	TYPE_MASK   0x3

Enumerations
enum	frame_type { TYPE_HIGH, TYPE_LOW, TYPE_SILENCE, TYPE_DONTSEND }

Functions
int	__ast_codec_register_with_format (struct ast_codec *codec, const char *format_name, struct ast_module *mod)
int	ast_codec_builtin_init (void)
	Initialize built-in codecs within the core. More...
static int	codec2_length (unsigned int samples)
static int	codec2_samples (struct ast_frame *frame)
static int	g719_length (unsigned int samples)
static int	g719_samples (struct ast_frame *frame)
static int	g723_len (unsigned char buf)
static int	g723_length (unsigned int samples)
static int	g723_samples (struct ast_frame *frame)
static int	g726_length (unsigned int samples)
static int	g726_samples (struct ast_frame *frame)
static int	g729_length (unsigned int samples)
static int	g729_samples (struct ast_frame *frame)
static unsigned char	get_n_bits_at (unsigned char *data, int n, int bit)
static int	gsm_length (unsigned int samples)
static int	gsm_samples (struct ast_frame *frame)
static int	ilbc_samples (struct ast_frame *frame)
static int	lpc10_samples (struct ast_frame *frame)
static int	none_length (unsigned int samples)
static int	none_samples (struct ast_frame *frame)
static int	opus_samples (struct ast_frame *frame)
static int	silk_samples (struct ast_frame *frame)
static int	siren14_length (unsigned int samples)
static int	siren14_samples (struct ast_frame *frame)
static int	siren7_length (unsigned int samples)
static int	siren7_samples (struct ast_frame *frame)
static int	slin_length (unsigned int samples)
static int	slin_samples (struct ast_frame *frame)
static int	speex16_samples (struct ast_frame *frame)
static int	speex32_samples (struct ast_frame *frame)
static int	speex8_samples (struct ast_frame *frame)
static int	speex_get_wb_sz_at (unsigned char *data, int len, int bit)
static int	speex_samples (unsigned char *data, int len)
static int	ulaw_length (unsigned int samples)
static int	ulaw_samples (struct ast_frame *frame)

Variables
static struct ast_codec	adpcm
static struct ast_codec	alaw
static struct ast_codec	codec2
static struct ast_codec	g719
static struct ast_codec	g722
static struct ast_codec	g723
static struct ast_codec	g726aal2
static struct ast_codec	g726rfc3551
static struct ast_codec	g729a
static struct ast_codec	gsm
static struct ast_codec	h261
static struct ast_codec	h263
static struct ast_codec	h263p
static struct ast_codec	h264
static struct ast_codec	h265
static struct ast_codec	ilbc
static struct ast_codec	jpeg
static struct ast_codec	lpc10
static struct ast_codec	mpeg4
static struct ast_codec	none
static struct ast_codec	opus
static struct ast_codec	png
static struct ast_codec	silk12
static struct ast_codec	silk16
static struct ast_codec	silk24
static struct ast_codec	silk8
static struct ast_codec	siren14
static struct ast_codec	siren7
static struct ast_codec	slin12
static struct ast_codec	slin16
static struct ast_codec	slin192
static struct ast_codec	slin24
static struct ast_codec	slin32
static struct ast_codec	slin44
static struct ast_codec	slin48
static struct ast_codec	slin8
static struct ast_codec	slin96
static struct ast_codec	speex16
static struct ast_codec	speex32
static struct ast_codec	speex8
static struct ast_codec	t140
static struct ast_codec	t140red
static struct ast_codec	t38
static struct ast_codec	testlaw
static struct ast_codec	ulaw
static struct ast_codec	vp8
static struct ast_codec	vp9

Detailed Description

Built-in supported codecs.

Author

Joshua Colp jcolp.nosp@m.@dig.nosp@m.ium.c.nosp@m.om

Definition in file codec_builtin.c.

Macro Definition Documentation

CODEC_REGISTER_AND_CACHE

#define CODEC_REGISTER_AND_CACHE

(

codec

)

Definition at line 914 of file codec_builtin.c.

Referenced by ast_codec_builtin_init().

CODEC_REGISTER_AND_CACHE_NAMED

#define CODEC_REGISTER_AND_CACHE_NAMED	(		fmt_name,
			codec
	)

Definition at line 928 of file codec_builtin.c.

Referenced by ast_codec_builtin_init().

TYPE_MASK

#define TYPE_MASK   0x3

Definition at line 51 of file codec_builtin.c.

Referenced by g723_len().

Enumeration Type Documentation

frame_type

enum frame_type

Enumerator
TYPE_HIGH
TYPE_LOW
TYPE_SILENCE
TYPE_DONTSEND

Definition at line 44 of file codec_builtin.c.

 {
 TYPE_HIGH, /* 0x0 */
 TYPE_LOW, /* 0x1 */
 TYPE_SILENCE, /* 0x2 */
 TYPE_DONTSEND /* 0x3 */
};

Function Documentation

__ast_codec_register_with_format()

int __ast_codec_register_with_format	(	struct ast_codec *	codec,
		const char *	format_name,
		struct ast_module *	mod
	)

Definition at line 277 of file codec.c.

References AO2_ALLOC_OPT_LOCK_NOLOCK, ao2_find, ao2_link_flags, ao2_ref, ao2_t_alloc_options, ast_codec_media_type2str(), ast_log, AST_MEDIA_TYPE_AUDIO, AST_MEDIA_TYPE_UNKNOWN, ast_module_shutdown_ref, ast_verb, codec_dtor(), codec_id, ast_codec::description, internal_ast_codec::external, internal_ast_codec::format_name, ast_codec::id, lock, LOG_ERROR, ast_codec::name, OBJ_NOLOCK, OBJ_SEARCH_OBJECT, S_OR, ast_codec::sample_rate, SCOPED_AO2WRLOCK, and ast_codec::type.

Referenced by __ast_codec_register().

{
 SCOPED_AO2WRLOCK(lock, codecs);
 struct internal_ast_codec *codec_new;

 /* Some types have specific requirements */
 if (codec->type == AST_MEDIA_TYPE_UNKNOWN) {
 ast_log(LOG_ERROR, "A media type must be specified for codec '%s'\n", codec->name);
 return -1;
 } else if (codec->type == AST_MEDIA_TYPE_AUDIO) {
 if (!codec->sample_rate) {
 ast_log(LOG_ERROR, "A sample rate must be specified for codec '%s' of type '%s'\n",
 codec->name, ast_codec_media_type2str(codec->type));
 return -1;
 }
 }

 codec_new = ao2_find(codecs, codec, OBJ_SEARCH_OBJECT | OBJ_NOLOCK);
 if (codec_new) {
 ast_log(LOG_ERROR, "A codec with name '%s' of type '%s' and sample rate '%u' is already registered\n",
 codec->name, ast_codec_media_type2str(codec->type), codec->sample_rate);
 ao2_ref(codec_new, -1);
 return -1;
 }

 codec_new = ao2_t_alloc_options(sizeof(*codec_new), codec_dtor,
 AO2_ALLOC_OPT_LOCK_NOLOCK, S_OR(codec->description, ""));
 if (!codec_new) {
 ast_log(LOG_ERROR, "Could not allocate a codec with name '%s' of type '%s' and sample rate '%u'\n",
 codec->name, ast_codec_media_type2str(codec->type), codec->sample_rate);
 return -1;
 }
 codec_new->external = *codec;
 codec_new->format_name = format_name;
 codec_new->external.id = codec_id++;

 ao2_link_flags(codecs, codec_new, OBJ_NOLOCK);

 /* Once registered a codec can not be unregistered, and the module must persist until shutdown */
 ast_module_shutdown_ref(mod);

 ast_verb(2, "Registered '%s' codec '%s' at sample rate '%u' with id '%u'\n",
 ast_codec_media_type2str(codec->type), codec->name, codec->sample_rate, codec_new->external.id);

 ao2_ref(codec_new, -1);

 return 0;
}

ast_codec_builtin_init()

int ast_codec_builtin_init

(

void

)

Initialize built-in codecs within the core.

Return values

0	success
-1	failure

Definition at line 942 of file codec_builtin.c.

References CODEC_REGISTER_AND_CACHE, and CODEC_REGISTER_AND_CACHE_NAMED.

Referenced by asterisk_daemon().

{
 int res = 0;

 res |= CODEC_REGISTER_AND_CACHE(codec2);
 res |= CODEC_REGISTER_AND_CACHE(g723);
 res |= CODEC_REGISTER_AND_CACHE(ulaw);
 res |= CODEC_REGISTER_AND_CACHE(alaw);
 res |= CODEC_REGISTER_AND_CACHE(gsm);
 res |= CODEC_REGISTER_AND_CACHE(g726rfc3551);
 res |= CODEC_REGISTER_AND_CACHE(g726aal2);
 res |= CODEC_REGISTER_AND_CACHE(adpcm);
 res |= CODEC_REGISTER_AND_CACHE(slin8);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin12", slin12);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin16", slin16);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin24", slin24);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin32", slin32);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin44", slin44);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin48", slin48);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin96", slin96);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("slin192", slin192);
 res |= CODEC_REGISTER_AND_CACHE(lpc10);
 res |= CODEC_REGISTER_AND_CACHE(g729a);
 res |= CODEC_REGISTER_AND_CACHE(speex8);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("speex16", speex16);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("speex32", speex32);
 res |= CODEC_REGISTER_AND_CACHE(ilbc);
 res |= CODEC_REGISTER_AND_CACHE(g722);
 res |= CODEC_REGISTER_AND_CACHE(siren7);
 res |= CODEC_REGISTER_AND_CACHE(siren14);
 res |= CODEC_REGISTER_AND_CACHE(testlaw);
 res |= CODEC_REGISTER_AND_CACHE(g719);
 res |= CODEC_REGISTER_AND_CACHE(opus);
 res |= CODEC_REGISTER_AND_CACHE(jpeg);
 res |= CODEC_REGISTER_AND_CACHE(png);
 res |= CODEC_REGISTER_AND_CACHE(h261);
 res |= CODEC_REGISTER_AND_CACHE(h263);
 res |= CODEC_REGISTER_AND_CACHE(h263p);
 res |= CODEC_REGISTER_AND_CACHE(h264);
 res |= CODEC_REGISTER_AND_CACHE(h265);
 res |= CODEC_REGISTER_AND_CACHE(mpeg4);
 res |= CODEC_REGISTER_AND_CACHE(vp8);
 res |= CODEC_REGISTER_AND_CACHE(vp9);
 res |= CODEC_REGISTER_AND_CACHE(t140red);
 res |= CODEC_REGISTER_AND_CACHE(t140);
 res |= CODEC_REGISTER_AND_CACHE(t38);
 res |= CODEC_REGISTER_AND_CACHE(none);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("silk8", silk8);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("silk12", silk12);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("silk16", silk16);
 res |= CODEC_REGISTER_AND_CACHE_NAMED("silk24", silk24);

 return res;
}

codec2_length()

static int codec2_length ( unsigned int  samples )

static

Definition at line 115 of file codec_builtin.c.

{
 return (samples / 160) * 6;
}

codec2_samples()

static int codec2_samples ( struct ast_frame *  frame )

static

Definition at line 110 of file codec_builtin.c.

References ast_frame::datalen.

{
 return 160 * (frame->datalen / 6);
}

g719_length()

static int g719_length ( unsigned int  samples )

static

Definition at line 724 of file codec_builtin.c.

{
 return (int) samples / ((float) 48000 / 8000);
}

g719_samples()

static int g719_samples ( struct ast_frame *  frame )

static

Definition at line 719 of file codec_builtin.c.

References ast_frame::datalen.

{
 return (int) frame->datalen * ((float) 48000 / 8000);
}

g723_len()

static int g723_len ( unsigned char  buf )

static

Definition at line 53 of file codec_builtin.c.

References ast_log, LOG_WARNING, type, TYPE_DONTSEND, TYPE_HIGH, TYPE_LOW, TYPE_MASK, and TYPE_SILENCE.

Referenced by g723_samples().

{
 enum frame_type type = buf & TYPE_MASK;

 switch(type) {
 case TYPE_DONTSEND:
 return 0;
 break;
 case TYPE_SILENCE:
 return 4;
 break;
 case TYPE_HIGH:
 return 24;
 break;
 case TYPE_LOW:
 return 20;
 break;
 default:
 ast_log(LOG_WARNING, "Badly encoded frame (%u)\n", type);
 }
 return -1;
}

g723_length()

static int g723_length ( unsigned int  samples )

static

Definition at line 92 of file codec_builtin.c.

{
 return (samples / 240) * 20;
}

g723_samples()

static int g723_samples ( struct ast_frame *  frame )

static

Definition at line 76 of file codec_builtin.c.

References buf, ast_frame::data, g723_len(), and ast_frame::ptr.

{
 unsigned char *buf = frame->data.ptr;
 int pos = 0, samples = 0, res;

 while(pos < frame->datalen) {
 res = g723_len(buf[pos]);
 if (res <= 0)
 break;
 samples += 240;
 pos += res;
 }

 return samples;
}

g726_length()

static int g726_length ( unsigned int  samples )

static

Definition at line 223 of file codec_builtin.c.

{
 return samples / 2;
}

g726_samples()

static int g726_samples ( struct ast_frame *  frame )

static

Definition at line 218 of file codec_builtin.c.

References ast_frame::datalen.

{
 return frame->datalen * 2;
}

g729_length()

static int g729_length ( unsigned int  samples )

static

Definition at line 443 of file codec_builtin.c.

{
 return samples / 8;
}

g729_samples()

static int g729_samples ( struct ast_frame *  frame )

static

Definition at line 438 of file codec_builtin.c.

References ast_frame::datalen.

{
 return frame->datalen * 8;
}

get_n_bits_at()

static unsigned char get_n_bits_at ( unsigned char *  data, int  n, int  bit  )

static

Definition at line 462 of file codec_builtin.c.

Referenced by speex_get_wb_sz_at(), and speex_samples().

{
 int byte = bit / 8; /* byte containing first bit */
 int rem = 8 - (bit % 8); /* remaining bits in first byte */
 unsigned char ret = 0;

 if (n <= 0 || n > 8)
 return 0;

 if (rem < n) {
 ret = (data[byte] << (n - rem));
 ret |= (data[byte + 1] >> (8 - n + rem));
 } else {
 ret = (data[byte] >> (rem - n));
 }

 return (ret & (0xff >> (8 - n)));
}

gsm_length()

static int gsm_length ( unsigned int  samples )

static

Definition at line 199 of file codec_builtin.c.

{
 return (samples / 160) * 33;
}

gsm_samples()

static int gsm_samples ( struct ast_frame *  frame )

static

Definition at line 194 of file codec_builtin.c.

References ast_frame::datalen.

{
 return 160 * (frame->datalen / 33);
}

ilbc_samples()

static int ilbc_samples ( struct ast_frame *  frame )

static

Definition at line 622 of file codec_builtin.c.

References ast_format_get_attribute_data(), ast_format_get_sample_rate(), ast_frame::datalen, ast_frame_subclass::format, ilbc_attr::mode, and ast_frame::subclass.

{
 struct ilbc_attr *attr = ast_format_get_attribute_data(frame->subclass.format);
 const unsigned int mode = attr ? attr->mode : 30;
 const unsigned int samples_per_frame = mode * ast_format_get_sample_rate(frame->subclass.format) / 1000;
 const unsigned int octets_per_frame = (mode == 20) ? 38 : 50;

 return samples_per_frame * frame->datalen / octets_per_frame;
}

lpc10_samples()

static int lpc10_samples ( struct ast_frame *  frame )

static

Definition at line 415 of file codec_builtin.c.

References ast_frame::data, and ast_frame::ptr.

{
 int samples = 22 * 8;

 /* assumes that the RTP packet contains one LPC10 frame */
 samples += (((char *)(frame->data.ptr))[7] & 0x1) * 8;

 return samples;
}

none_length()

static int none_length ( unsigned int  samples )

static

Definition at line 139 of file codec_builtin.c.

 {
 return samples;
}

none_samples()

static int none_samples ( struct ast_frame *  frame )

static

Definition at line 134 of file codec_builtin.c.

References ast_frame::datalen.

{
 return frame->datalen;
}

opus_samples()

static int opus_samples ( struct ast_frame *  frame )

static

Definition at line 742 of file codec_builtin.c.

References ast_format_get_sample_rate(), ast_frame_subclass::format, and ast_frame::subclass.

{
 /*
 * XXX This is likely not at all what's intended from this
 * callback. If you have codec_opus.so loaded then this
 * function is overridden anyway. However, since opus is
 * variable bit rate and I cannot extract the calculation code
 * from the opus library, I am going to punt and assume 20ms
 * worth of samples. In testing, this has worked just fine.
 * Pass through support doesn't seem to care about the value
 * returned anyway.
 */
 return ast_format_get_sample_rate(frame->subclass.format) / 50;
}

silk_samples()

static int silk_samples ( struct ast_frame *  frame )

static

Definition at line 855 of file codec_builtin.c.

References ast_format_get_sample_rate(), ast_frame_subclass::format, and ast_frame::subclass.

{
 /* XXX This is likely not at all what's intended from this callback. However,
 * since SILK is variable bit rate, I have no idea how to take a frame of data
 * and determine the number of samples present. Instead, we base this on the
 * sample rate of the codec and the expected number of samples to receive in 20ms.
 * In testing, this has worked just fine.
 */
 return ast_format_get_sample_rate(frame->subclass.format) / 50;
}

siren14_length()

static int siren14_length ( unsigned int  samples )

static

Definition at line 687 of file codec_builtin.c.

{
 return (int) samples / ((float) 32000 / 6000);;
}

siren14_samples()

static int siren14_samples ( struct ast_frame *  frame )

static

Definition at line 682 of file codec_builtin.c.

References ast_frame::datalen.

{
 return (int) frame->datalen * ((float) 32000 / 6000);
}

siren7_length()

static int siren7_length ( unsigned int  samples )

static

Definition at line 664 of file codec_builtin.c.

{
 return samples / (16000 / 4000);
}

siren7_samples()

static int siren7_samples ( struct ast_frame *  frame )

static

Definition at line 659 of file codec_builtin.c.

References ast_frame::datalen.

{
 return frame->datalen * (16000 / 4000);
}

slin_length()

static int slin_length ( unsigned int  samples )

static

Definition at line 275 of file codec_builtin.c.

{
 return samples * 2;
}

slin_samples()

static int slin_samples ( struct ast_frame *  frame )

static

Definition at line 270 of file codec_builtin.c.

References ast_frame::datalen.

{
 return frame->datalen / 2;
}

speex16_samples()

static int speex16_samples ( struct ast_frame *  frame )

static

Definition at line 588 of file codec_builtin.c.

References ast_frame::data, ast_frame::datalen, ast_frame::ptr, and speex_samples().

{
 return 2 * speex_samples(frame->data.ptr, frame->datalen);
}

speex32_samples()

static int speex32_samples ( struct ast_frame *  frame )

static

Definition at line 605 of file codec_builtin.c.

References ast_frame::data, ast_frame::datalen, ast_frame::ptr, and speex_samples().

{
 return 4 * speex_samples(frame->data.ptr, frame->datalen);
}

speex8_samples()

static int speex8_samples ( struct ast_frame *  frame )

static

Definition at line 571 of file codec_builtin.c.

References ast_frame::data, ast_frame::datalen, ast_frame::ptr, and speex_samples().

{
 return speex_samples(frame->data.ptr, frame->datalen);
}

speex_get_wb_sz_at()

static int speex_get_wb_sz_at ( unsigned char *  data, int  len, int  bit  )

static

Definition at line 481 of file codec_builtin.c.

References ast_log, c, get_n_bits_at(), and LOG_WARNING.

Referenced by speex_samples().

{
 static const int SpeexWBSubModeSz[] = {
 4, 36, 112, 192,
 352, 0, 0, 0 };
 int off = bit;
 unsigned char c;

 /* skip up to two wideband frames */
 if (((len * 8 - off) >= 5) &&
 get_n_bits_at(data, 1, off)) {
 c = get_n_bits_at(data, 3, off + 1);
 off += SpeexWBSubModeSz[c];

 if (((len * 8 - off) >= 5) &&
 get_n_bits_at(data, 1, off)) {
 c = get_n_bits_at(data, 3, off + 1);
 off += SpeexWBSubModeSz[c];

 if (((len * 8 - off) >= 5) &&
 get_n_bits_at(data, 1, off)) {
 ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n");
 return -1;
 }
 }

 }
 return off - bit;
}

speex_samples()

static int speex_samples ( unsigned char *  data, int  len  )

static

Definition at line 511 of file codec_builtin.c.

References ast_log, c, get_n_bits_at(), LOG_WARNING, and speex_get_wb_sz_at().

Referenced by speex16_samples(), speex32_samples(), and speex8_samples().

{
 static const int SpeexSubModeSz[] = {
 5, 43, 119, 160,
 220, 300, 364, 492,
 79, 0, 0, 0,
 0, 0, 0, 0 };
 static const int SpeexInBandSz[] = {
 1, 1, 4, 4,
 4, 4, 4, 4,
 8, 8, 16, 16,
 32, 32, 64, 64 };
 int bit = 0;
 int cnt = 0;
 int off;
 unsigned char c;

 while ((len * 8 - bit) >= 5) {
 /* skip wideband frames */
 off = speex_get_wb_sz_at(data, len, bit);
 if (off < 0) {
 ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n");
 break;
 }
 bit += off;

 if ((len * 8 - bit) < 5)
 break;

 /* get control bits */
 c = get_n_bits_at(data, 5, bit);
 bit += 5;

 if (c == 15) {
 /* terminator */
 break;
 } else if (c == 14) {
 /* in-band signal; next 4 bits contain signal id */
 c = get_n_bits_at(data, 4, bit);
 bit += 4;
 bit += SpeexInBandSz[c];
 } else if (c == 13) {
 /* user in-band; next 4 bits contain msg len */
 c = get_n_bits_at(data, 4, bit);
 bit += 4;
 /* after which it's 5-bit signal id + c bytes of data */
 bit += 5 + c * 8;
 } else if (c > 8) {
 /* unknown */
 ast_log(LOG_WARNING, "Unknown speex control frame %d\n", c);
 break;
 } else {
 /* skip number bits for submode (less the 5 control bits) */
 bit += SpeexSubModeSz[c] - 5;
 cnt += 160; /* new frame */
 }
 }
 return cnt;
}

ulaw_length()

static int ulaw_length ( unsigned int  samples )

static

Definition at line 161 of file codec_builtin.c.

{
 return samples;
}

ulaw_samples()

static int ulaw_samples ( struct ast_frame *  frame )

static

Definition at line 156 of file codec_builtin.c.

References ast_frame::datalen.

{
 return frame->datalen;
}

Variable Documentation

adpcm

struct ast_codec adpcm

static

Definition at line 256 of file codec_builtin.c.

alaw

struct ast_codec alaw

static

Definition at line 180 of file codec_builtin.c.

Referenced by AST_TEST_DEFINE().

codec2

struct ast_codec codec2

static

Definition at line 120 of file codec_builtin.c.

Referenced by ast_format_cap_append_by_type().

g719

struct ast_codec g719

static

Definition at line 729 of file codec_builtin.c.

g722

struct ast_codec g722

static

Definition at line 645 of file codec_builtin.c.

g723

struct ast_codec g723

static

Definition at line 97 of file codec_builtin.c.

g726aal2

struct ast_codec g726aal2

static

Definition at line 242 of file codec_builtin.c.

g726rfc3551

struct ast_codec g726rfc3551

static

Definition at line 228 of file codec_builtin.c.

g729a

struct ast_codec g729a

static

Definition at line 448 of file codec_builtin.c.

gsm

struct ast_codec gsm

static

Definition at line 204 of file codec_builtin.c.

h261

struct ast_codec h261

static

Definition at line 781 of file codec_builtin.c.

h263

struct ast_codec h263

static

Definition at line 788 of file codec_builtin.c.

Referenced by AST_TEST_DEFINE().

h263p

struct ast_codec h263p

static

Definition at line 795 of file codec_builtin.c.

h264

struct ast_codec h264

static

Definition at line 802 of file codec_builtin.c.

h265

struct ast_codec h265

static

Definition at line 809 of file codec_builtin.c.

ilbc

struct ast_codec ilbc

static

Definition at line 632 of file codec_builtin.c.

jpeg

struct ast_codec jpeg

static

Initial value:

= {
 .name = "jpeg",
 .description = "JPEG image",
 .type = AST_MEDIA_TYPE_IMAGE,
}

Definition at line 769 of file codec_builtin.c.

lpc10

struct ast_codec lpc10

static

Definition at line 425 of file codec_builtin.c.

mpeg4

struct ast_codec mpeg4

static

Definition at line 816 of file codec_builtin.c.

none

struct ast_codec none

static

Definition at line 143 of file codec_builtin.c.

opus

struct ast_codec opus

static

Definition at line 757 of file codec_builtin.c.

png

struct ast_codec png

static

Initial value:

= {
 .name = "png",
 .description = "PNG Image",
 .type = AST_MEDIA_TYPE_IMAGE,
}

Definition at line 775 of file codec_builtin.c.

silk12

struct ast_codec silk12

static

Definition at line 878 of file codec_builtin.c.

silk16

struct ast_codec silk16

static

Definition at line 890 of file codec_builtin.c.

silk24

struct ast_codec silk24

static

Definition at line 902 of file codec_builtin.c.

silk8

struct ast_codec silk8

static

Definition at line 866 of file codec_builtin.c.

siren14

struct ast_codec siren14

static

Definition at line 692 of file codec_builtin.c.

siren7

struct ast_codec siren7

static

Definition at line 669 of file codec_builtin.c.

slin12

struct ast_codec slin12

static

Definition at line 295 of file codec_builtin.c.

slin16

struct ast_codec slin16

static

Definition at line 310 of file codec_builtin.c.

slin192

struct ast_codec slin192

static

Definition at line 400 of file codec_builtin.c.

slin24

struct ast_codec slin24

static

Definition at line 325 of file codec_builtin.c.

slin32

struct ast_codec slin32

static

Definition at line 340 of file codec_builtin.c.

slin44

struct ast_codec slin44

static

Definition at line 355 of file codec_builtin.c.

slin48

struct ast_codec slin48

static

Definition at line 370 of file codec_builtin.c.

slin8

struct ast_codec slin8

static

Definition at line 280 of file codec_builtin.c.

slin96

struct ast_codec slin96

static

Definition at line 385 of file codec_builtin.c.

speex16

struct ast_codec speex16

static

Definition at line 593 of file codec_builtin.c.

speex32

struct ast_codec speex32

static

Definition at line 610 of file codec_builtin.c.

speex8

struct ast_codec speex8

static

Definition at line 576 of file codec_builtin.c.

t140

struct ast_codec t140

static

Initial value:

= {
 .name = "t140",
 .description = "Passthrough T.140 Realtime Text",
 .type = AST_MEDIA_TYPE_TEXT,
}

Definition at line 843 of file codec_builtin.c.

t140red

struct ast_codec t140red

static

Initial value:

= {
 .name = "red",
 .description = "T.140 Realtime Text with redundancy",
 .type = AST_MEDIA_TYPE_TEXT,
}

Definition at line 837 of file codec_builtin.c.

t38

struct ast_codec t38

static

Initial value:

= {
 .name = "t38",
 .description = "T.38 UDPTL Fax",
 .type = AST_MEDIA_TYPE_IMAGE,
}

Definition at line 849 of file codec_builtin.c.

testlaw

struct ast_codec testlaw

static

Definition at line 705 of file codec_builtin.c.

ulaw

struct ast_codec ulaw

static

Definition at line 166 of file codec_builtin.c.

Referenced by AST_TEST_DEFINE().

vp8

struct ast_codec vp8

static

Definition at line 823 of file codec_builtin.c.

vp9

struct ast_codec vp9

static

Definition at line 830 of file codec_builtin.c.