static int echo_exec(struct ast_channel *chan, const char *data)
{
int res = -1;
int fir_sent = 0;
while (ast_waitfor(chan, -1) > -1) {
struct ast_frame *f = ast_read(chan);
if (!f) {
break;
}
f->delivery.tv_sec = 0;
f->delivery.tv_usec = 0;
if (f->frametype == AST_FRAME_CONTROL
&& f->subclass.integer == AST_CONTROL_VIDUPDATE
&& !fir_sent) {
if (ast_write(chan, f) < 0) {
ast_frfree(f);
goto end;
}
fir_sent = 1;
}
if (!fir_sent && f->frametype == AST_FRAME_VIDEO) {
struct ast_frame frame = {
.frametype = AST_FRAME_CONTROL,
.subclass.integer = AST_CONTROL_VIDUPDATE,
};
ast_write(chan, &frame);
fir_sent = 1;
}
if (f->frametype != AST_FRAME_CONTROL
&& f->frametype != AST_FRAME_MODEM
&& f->frametype != AST_FRAME_NULL
&& ast_write(chan, f)) {
ast_frfree(f);
goto end;
}
if ((f->frametype == AST_FRAME_DTMF) && (f->subclass.integer == '#')) {
res = 0;
ast_frfree(f);
goto end;
}
ast_frfree(f);
}
end:
return res;
}
static int unload_module(void)
{
return ast_unregister_application(app);
}
static int load_module(void)
{
return ast_register_application_xml(app, echo_exec);
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Simple Echo Application");
static struct ast_frame *slin16_to_slin8_sample(void)
{
static struct ast_frame f = {
.frametype = AST_FRAME_VOICE,
.subclass = AST_FORMAT_SLINEAR16,
.datalen = sizeof(slin16_slin8_ex),
.samples = ARRAY_LEN(slin16_slin8_ex),
.src = __PRETTY_FUNCTION__,
.data = slin16_slin8_ex,
};
return &f;
}
static struct ast_frame *slin8_to_slin16_sample(void)
{
static struct ast_frame f = {
.frametype = AST_FRAME_VOICE,
.subclass = AST_FORMAT_SLINEAR,
.datalen = sizeof(slin8_slin16_ex),
.samples = ARRAY_LEN(slin8_slin16_ex),
.src = __PRETTY_FUNCTION__,
.data = slin8_slin16_ex,
};
return &f;
}
static struct ast_translator slin16_to_slin8 = {
.name = "slin16_to_slin8",
.srcfmt = AST_FORMAT_SLINEAR16,
.dstfmt = AST_FORMAT_SLINEAR,
.newpvt = slin16_to_slin8_new,
.destroy = slin16_to_slin8_destroy,
.framein = slin16_to_slin8_framein,
.sample = slin16_to_slin8_sample,
.desc_size = sizeof(struct slin16_to_slin8_pvt),
.buffer_samples = (OUTBUF_SIZE / sizeof(int16_t)),
.buf_size = OUTBUF_SIZE,
};
static struct ast_translator slin8_to_slin16 = {
.name = "slin8_to_slin16",
.srcfmt = AST_FORMAT_SLINEAR,
.dstfmt = AST_FORMAT_SLINEAR16,
.newpvt = slin8_to_slin16_new,
.destroy = slin8_to_slin16_destroy,
.framein = slin8_to_slin16_framein,
.sample = slin8_to_slin16_sample,
.desc_size = sizeof(struct slin8_to_slin16_pvt),
.buffer_samples = (OUTBUF_SIZE / sizeof(int16_t)),
.buf_size = OUTBUF_SIZE,
};
static int unload_module(void)
{
int res = 0;
res |= ast_unregister_translator(&slin16_to_slin8);
res |= ast_unregister_translator(&slin8_to_slin16);
return res;
}
static int load_module(void)
{
int res = 0;
res |= ast_register_translator(&slin16_to_slin8);
res |= ast_register_translator(&slin8_to_slin16);
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "SLIN Resampling Codec");
