static int decode_update(struct audec_state **adsp,
const struct aucodec *ac, const char *fmtp)
{
struct audec_state *st;
int err = 0;
(void)fmtp;
if (!adsp || !ac)
return EINVAL;
if (*adsp)
return 0;
st = mem_zalloc(sizeof(*st), decode_destructor);
if (!st)
return ENOMEM;
st->ac = ac;
switch (ac->srate) {
#ifdef AMR_NB
case 8000:
st->dec = Decoder_Interface_init();
break;
#endif
#ifdef AMR_WB
case 16000:
st->dec = D_IF_init();
break;
#endif
}
if (!st->dec)
err = ENOMEM;
if (err)
mem_deref(st);
else
*adsp = st;
return err;
}
static int UpdateInput(amrwb* p)
{
if (p->Decoder)
{
D_IF_exit(p->Decoder);
p->Decoder = NULL;
}
BufferClear(&p->Buffer);
if (p->Codec.In.Format.Type == PACKET_AUDIO)
{
p->Decoder = D_IF_init();
if (!p->Decoder)
return ERR_OUT_OF_MEMORY;
p->Codec.In.Format.Format.Audio.SampleRate = 16000;
p->Codec.In.Format.Format.Audio.Channels = 1;
PacketFormatPCM(&p->Codec.Out.Format,&p->Codec.In.Format,16);
}
return ERR_NONE;
}
int main(int argc, char *argv[])
{
FILE *f_serial; /* File of serial bits for transmission */
FILE *f_synth; /* File of speech data */
Word16 synth[L_FRAME16k]; /* Buffer for speech @ 16kHz */
UWord8 serial[NB_SERIAL_MAX];
Word16 mode;
Word32 frame;
#ifndef IF2
char magic[16];
#endif
void *st;
fprintf(stderr, "\n");
fprintf(stderr, "===================================================================\n");
fprintf(stderr, " 3GPP AMR-WB Floating-point Speech Decoder, v7.0.0, Mar 20, 2007\n");
fprintf(stderr, "===================================================================\n");
fprintf(stderr, "\n");
/*
* Read passed arguments and open in/out files
*/
if (argc != 3)
{
fprintf(stderr, "Usage : decoder bitstream_file synth_file\n");
fprintf(stderr, "\n");
fprintf(stderr, "Format for bitstream_file:\n");
#ifdef IF2
fprintf(stderr, " Described in TS26.201.\n");
#else
fprintf(stderr, " Described in RFC 3267 (Sections 5.1 and 5.3).\n");
#endif
fprintf(stderr, "\n");
fprintf(stderr, "Format for synth_file:\n");
fprintf(stderr, " Synthesis is written to a binary file of 16 bits data.\n");
fprintf(stderr, "\n");
exit(0);
}
/* Open file for synthesis and packed serial stream */
if ((f_serial = fopen(argv[1], "rb")) == NULL)
{
fprintf(stderr, "Input file '%s' does not exist !!\n", argv[1]);
exit(0);
}
else
{
fprintf(stderr, "Input bitstream file: %s\n", argv[1]);
}
if ((f_synth = fopen(argv[2], "wb")) == NULL)
{
fprintf(stderr, "Cannot open file '%s' !!\n", argv[2]);
exit(0);
}
else
{
fprintf(stderr, "Synthesis speech file: %s\n", argv[2]);
}
/*
* Initialization of decoder
*/
st = D_IF_init();
#ifndef IF2
/* read magic number */
fread(magic, sizeof(char), strlen(AMRWB_MAGIC_NUMBER), f_serial);
/* verify magic number */
if (strncmp(magic, AMRWB_MAGIC_NUMBER, strlen(AMRWB_MAGIC_NUMBER)))
{
fprintf(stderr, "%s%s\n", "Invalid magic number: ", magic);
fclose(f_serial);
fclose(f_synth);
exit(0);
}
#endif
/*
* Loop for each "L_FRAME" speech data
*/
fprintf(stderr, "\n --- Running ---\n");
frame = 0;
while (fread(serial, sizeof (UWord8), 1, f_serial ) > 0)
{
#ifdef IF2
mode = (Word16)(serial[0] >> 4);
#else
mode = (Word16)((serial[0] >> 3) & 0x0F);
#endif
fread(&serial[1], sizeof (UWord8), block_size[mode] - 1, f_serial );
frame++;
fprintf(stderr, " Decoding frame: %ld\r", frame);
D_IF_decode( st, serial, synth, _good_frame);
fwrite(synth, sizeof(Word16), L_FRAME16k, f_synth);
fflush(f_synth);
}
D_IF_exit(st);
fclose(f_serial);
fclose(f_synth);
return 0;
}
/*
* Open codec.
*/
static pj_status_t amr_codec_open( pjmedia_codec *codec,
pjmedia_codec_param *attr )
{
struct amr_data *amr_data = (struct amr_data*) codec->codec_data;
pjmedia_codec_amr_pack_setting *setting;
unsigned i;
pj_uint8_t octet_align = 0;
pj_int8_t enc_mode;
const pj_str_t STR_FMTP_OCTET_ALIGN = {"octet-align", 11};
unsigned idx;
PJ_ASSERT_RETURN(codec && attr, PJ_EINVAL);
PJ_ASSERT_RETURN(amr_data != NULL, PJ_EINVALIDOP);
idx = (attr->info.clock_rate <= 8000? IDX_AMR_NB: IDX_AMR_WB);
enc_mode = pjmedia_codec_amr_get_mode(attr->info.avg_bps);
pj_assert(enc_mode >= 0 && enc_mode < amr_bitrates_size[idx]);
/* Check octet-align */
for (i = 0; i < attr->setting.dec_fmtp.cnt; ++i) {
if (pj_stricmp(&attr->setting.dec_fmtp.param[i].name,
&STR_FMTP_OCTET_ALIGN) == 0)
{
octet_align = (pj_uint8_t)
(pj_strtoul(&attr->setting.dec_fmtp.param[i].val));
break;
}
}
/* Check mode-set */
for (i = 0; i < attr->setting.enc_fmtp.cnt; ++i) {
const pj_str_t STR_FMTP_MODE_SET = {"mode-set", 8};
if (pj_stricmp(&attr->setting.enc_fmtp.param[i].name,
&STR_FMTP_MODE_SET) == 0)
{
const char *p;
pj_size_t l;
pj_int8_t diff = 99;
/* Encoding mode is chosen based on local default mode setting:
* - if local default mode is included in the mode-set, use it
* - otherwise, find the closest mode to local default mode;
* if there are two closest modes, prefer to use the higher
* one, e.g: local default mode is 4, the mode-set param
* contains '2,3,5,6', then 5 will be chosen.
*/
p = pj_strbuf(&attr->setting.enc_fmtp.param[i].val);
l = pj_strlen(&attr->setting.enc_fmtp.param[i].val);
while (l--) {
if (*p>='0' && *p<=('0'+amr_bitrates_size[idx]-1)) {
pj_int8_t tmp = *p - '0' - enc_mode;
if (PJ_ABS(diff) > PJ_ABS(tmp) ||
(PJ_ABS(diff) == PJ_ABS(tmp) && tmp > diff))
{
diff = tmp;
if (diff == 0) break;
}
}
++p;
}
PJ_ASSERT_RETURN(diff != 99, PJMEDIA_CODEC_EFAILED);
enc_mode = enc_mode + diff;
break;
}
}
amr_data->clock_rate = attr->info.clock_rate;
amr_data->vad_enabled = (attr->setting.vad != 0);
amr_data->plc_enabled = (attr->setting.plc != 0);
amr_data->enc_mode = enc_mode;
if (idx == IDX_AMR_NB) {
#ifdef USE_AMRNB
amr_data->encoder = Encoder_Interface_init(amr_data->vad_enabled);
#endif
} else {
#ifdef USE_AMRWB
amr_data->encoder = E_IF_init();
#endif
}
if (amr_data->encoder == NULL) {
TRACE_((THIS_FILE, "Encoder initialization failed"));
amr_codec_close(codec);
return PJMEDIA_CODEC_EFAILED;
}
setting = &amr_data->enc_setting;
pj_bzero(setting, sizeof(pjmedia_codec_amr_pack_setting));
setting->amr_nb = (idx == IDX_AMR_NB? 1: 0);
setting->reorder = 0;
setting->octet_aligned = octet_align;
setting->cmr = 15;
if (idx == IDX_AMR_NB) {
#ifdef USE_AMRNB
amr_data->decoder = Decoder_Interface_init();
#endif
} else {
#ifdef USE_AMRWB
amr_data->decoder = D_IF_init();
#endif
}
if (amr_data->decoder == NULL) {
TRACE_((THIS_FILE, "Decoder initialization failed"));
amr_codec_close(codec);
return PJMEDIA_CODEC_EFAILED;
}
setting = &amr_data->dec_setting;
pj_bzero(setting, sizeof(pjmedia_codec_amr_pack_setting));
setting->amr_nb = (idx == IDX_AMR_NB? 1: 0);
setting->reorder = 0;
setting->octet_aligned = octet_align;
TRACE_((THIS_FILE, "AMR codec allocated: clockrate=%d vad=%d, plc=%d,"
" bitrate=%d", amr_data->clock_rate,
amr_data->vad_enabled, amr_data->plc_enabled,
amr_bitrates[idx][amr_data->enc_mode]));
return PJ_SUCCESS;
}
int main(int argc, char *argv[])
{
FILE *f_serial; /* File of serial bits for transmission */
FILE *f_synth; /* File of speech data */
Word16 synth[L_FRAME16k]; /* Buffer for speech @ 16kHz */
UWord8 serial[NB_SERIAL_MAX];
Word16 mode;
Word32 frame;
void *st;
fprintf(stderr, "\n");
fprintf(stderr, "===================================================================\n");
fprintf(stderr, " 3GPP AMR-WB Floating-point Speech Decoder, v5.0.0, Mar 05, 2002\n");
fprintf(stderr, "===================================================================\n");
fprintf(stderr, "\n");
/*
* Read passed arguments and open in/out files
*/
if (argc != 3)
{
fprintf(stderr, "Usage : decoder bitstream_file synth_file\n");
fprintf(stderr, "\n");
fprintf(stderr, "Format for bitstream_file:\n");
fprintf(stderr, " Described in TS26.201.\n");
fprintf(stderr, "\n");
fprintf(stderr, "Format for synth_file:\n");
fprintf(stderr, " Synthesis is written to a binary file of 16 bits data.\n");
fprintf(stderr, "\n");
exit(0);
}
/* Open file for synthesis and packed serial stream */
if ((f_serial = fopen(argv[1], "rb")) == NULL)
{
fprintf(stderr, "Input file '%s' does not exist !!\n", argv[1]);
exit(0);
}
else
{
fprintf(stderr, "Input bitstream file: %s\n", argv[1]);
}
if ((f_synth = fopen(argv[2], "wb")) == NULL)
{
fprintf(stderr, "Cannot open file '%s' !!\n", argv[2]);
exit(0);
}
else
{
fprintf(stderr, "Synthesis speech file: %s\n", argv[2]);
}
/*
* Initialization of decoder
*/
st = D_IF_init();
/*
* Loop for each "L_FRAME" speech data
*/
fprintf(stderr, "\n --- Running ---\n");
frame = 0;
while (fread(serial, sizeof (UWord8), 1, f_serial ) > 0)
{
mode = (Word16)(serial[0] >> 4);
fread(&serial[1], sizeof (UWord8), block_size[mode] - 1, f_serial );
frame++;
fprintf(stderr, " Decoding frame: %ld\r", frame);
D_IF_decode( st, serial, synth, _good_frame);
fwrite(synth, sizeof(Word16), L_FRAME16k, f_synth);
fflush(f_synth);
}
D_IF_exit(st);
fclose(f_serial);
fclose(f_synth);
return 0;
}
static switch_status_t switch_amrwb_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
#ifdef AMRWB_PASSTHROUGH
codec->flags |= SWITCH_CODEC_FLAG_PASSTHROUGH;
if (codec->fmtp_in) {
codec->fmtp_out = switch_core_strdup(codec->memory_pool, codec->fmtp_in);
}
return SWITCH_STATUS_SUCCESS;
#else
struct amrwb_context *context = NULL;
int encoding, decoding;
int x, i, argc;
char *argv[10];
char fmtptmp[128];
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct amrwb_context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (codec->fmtp_in) {
argc = switch_separate_string(codec->fmtp_in, ';', argv, (sizeof(argv) / sizeof(argv[0])));
for (x = 0; x < argc; x++) {
char *data = argv[x];
char *arg;
while (*data && *data == ' ') {
data++;
}
if ((arg = strchr(data, '='))) {
*arg++ = '\0';
if (!strcasecmp(data, "octet-align")) {
if (atoi(arg)) {
switch_set_flag(context, AMRWB_OPT_OCTET_ALIGN);
}
} else if (!strcasecmp(data, "mode-change-neighbor")) {
if (atoi(arg)) {
switch_set_flag(context, AMRWB_OPT_MODE_CHANGE_NEIGHBOR);
}
} else if (!strcasecmp(data, "crc")) {
if (atoi(arg)) {
switch_set_flag(context, AMRWB_OPT_CRC);
}
} else if (!strcasecmp(data, "robust-sorting")) {
if (atoi(arg)) {
switch_set_flag(context, AMRWB_OPT_ROBUST_SORTING);
}
} else if (!strcasecmp(data, "interveaving")) {
if (atoi(arg)) {
switch_set_flag(context, AMRWB_OPT_INTERLEAVING);
}
} else if (!strcasecmp(data, "mode-change-period")) {
context->change_period = atoi(arg);
} else if (!strcasecmp(data, "ptime")) {
context->ptime = (switch_byte_t) atoi(arg);
} else if (!strcasecmp(data, "channels")) {
context->channels = (switch_byte_t) atoi(arg);
} else if (!strcasecmp(data, "maxptime")) {
context->max_ptime = (switch_byte_t) atoi(arg);
} else if (!strcasecmp(data, "mode-set")) {
int y, m_argc;
char *m_argv[8];
m_argc = switch_separate_string(arg, ',', m_argv, (sizeof(m_argv) / sizeof(m_argv[0])));
for (y = 0; y < m_argc; y++) {
context->enc_modes |= (1 << atoi(m_argv[y]));
}
}
}
}
}
if (context->enc_modes) {
for (i = 8; i > -1; i++) {
if (context->enc_modes & (1 << i)) {
context->enc_mode = (switch_byte_t) i;
break;
}
}
}
if (!context->enc_mode) {
context->enc_mode = globals.default_bitrate;
}
switch_snprintf(fmtptmp, sizeof(fmtptmp), "octet-align=%d; mode-set=%d", switch_test_flag(context, AMRWB_OPT_OCTET_ALIGN) ? 1 : 0,
context->enc_mode);
codec->fmtp_out = switch_core_strdup(codec->memory_pool, fmtptmp);
context->enc_mode = AMRWB_DEFAULT_BITRATE;
context->encoder_state = NULL;
context->decoder_state = NULL;
if (encoding) {
context->encoder_state = E_IF_init();
}
if (decoding) {
context->decoder_state = D_IF_init();
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
#endif
}