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freeswitch/src/switch_core_codec.c

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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* 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 <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthm@freeswitch.org>
* Michael Jerris <mike@jerris.com>
* Paul D. Tinsley <pdt at jackhammer.org>
* Christopher M. Rienzo <chris@rienzo.com>
*
*
* switch_core_codec.c -- Main Core Library (codec functions)
*
*/
#include <switch.h>
#include "private/switch_core_pvt.h"
static uint32_t CODEC_ID = 1;
SWITCH_DECLARE(uint32_t) switch_core_codec_next_id(void)
{
return CODEC_ID++;
}
SWITCH_DECLARE(void) switch_core_session_unset_read_codec(switch_core_session_t *session)
{
switch_mutex_t *mutex = NULL;
switch_mutex_lock(session->codec_read_mutex);
if (session->read_codec) mutex = session->read_codec->mutex;
if (mutex) switch_mutex_lock(mutex);
session->real_read_codec = session->read_codec = NULL;
session->raw_read_frame.codec = session->read_codec;
session->raw_write_frame.codec = session->read_codec;
session->enc_read_frame.codec = session->read_codec;
session->enc_write_frame.codec = session->read_codec;
if (mutex) switch_mutex_unlock(mutex);
switch_mutex_unlock(session->codec_read_mutex);
}
SWITCH_DECLARE(void) switch_core_session_lock_codec_write(switch_core_session_t *session)
{
switch_mutex_lock(session->codec_write_mutex);
}
SWITCH_DECLARE(void) switch_core_session_unlock_codec_write(switch_core_session_t *session)
{
switch_mutex_unlock(session->codec_write_mutex);
}
SWITCH_DECLARE(void) switch_core_session_lock_codec_read(switch_core_session_t *session)
{
switch_mutex_lock(session->codec_read_mutex);
}
SWITCH_DECLARE(void) switch_core_session_unlock_codec_read(switch_core_session_t *session)
{
switch_mutex_unlock(session->codec_read_mutex);
}
SWITCH_DECLARE(void) switch_core_session_unset_write_codec(switch_core_session_t *session)
{
switch_mutex_t *mutex = NULL;
switch_mutex_lock(session->codec_write_mutex);
if (session->write_codec) mutex = session->write_codec->mutex;
if (mutex) switch_mutex_lock(mutex);
session->real_write_codec = session->write_codec = NULL;
if (mutex) switch_mutex_unlock(mutex);
switch_mutex_unlock(session->codec_write_mutex);
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_real_read_codec(switch_core_session_t *session, switch_codec_t *codec)
{
switch_event_t *event;
switch_channel_t *channel = switch_core_session_get_channel(session);
char tmp[30];
switch_status_t status = SWITCH_STATUS_SUCCESS;
int changed_read_codec = 0;
switch_mutex_lock(session->codec_read_mutex);
if (codec && (!codec->implementation || !switch_core_codec_ready(codec))) {
codec = NULL;
}
if (codec) {
/* set real_read_codec and read_codec */
if (!session->real_read_codec) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s Original read codec set to %s:%d\n",
switch_channel_get_name(session->channel), codec->implementation->iananame, codec->implementation->ianacode);
session->read_codec = session->real_read_codec = codec;
changed_read_codec = 1;
if (codec->implementation) {
session->read_impl = *codec->implementation;
session->real_read_impl = *codec->implementation;
} else {
memset(&session->read_impl, 0, sizeof(session->read_impl));
}
} else { /* replace real_read_codec */
switch_codec_t *cur_codec;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s Original read codec replaced with %s:%d\n",
switch_channel_get_name(session->channel), codec->implementation->iananame, codec->implementation->ianacode);
/* Set real_read_codec to front of the list of read_codecs */
cur_codec = session->read_codec;
while (cur_codec != NULL) {
if (cur_codec->next == session->real_read_codec) {
cur_codec->next = codec;
break;
}
cur_codec = cur_codec->next;
}
session->real_read_codec = codec;
session->real_read_impl = *codec->implementation;
/* set read_codec with real_read_codec if it no longer is ready */
if (!switch_core_codec_ready(session->read_codec)) {
session->read_codec = codec;
changed_read_codec = 1;
if (codec->implementation) {
session->read_impl = *codec->implementation;
session->real_read_impl = *codec->implementation;
} else {
memset(&session->read_impl, 0, sizeof(session->read_impl));
}
}
}
/* force media bugs to copy the read codec from the next frame */
switch_thread_rwlock_wrlock(session->bug_rwlock);
if (switch_core_codec_ready(&session->bug_codec)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Destroying BUG Codec %s:%d\n",
session->bug_codec.implementation->iananame, session->bug_codec.implementation->ianacode);
switch_core_codec_destroy(&session->bug_codec);
}
switch_thread_rwlock_unlock(session->bug_rwlock);
} else {
status = SWITCH_STATUS_FALSE;
goto end;
}
if (changed_read_codec && session->read_codec && session->read_impl.decoded_bytes_per_packet) {
if (switch_event_create(&event, SWITCH_EVENT_CODEC) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_data(session->channel, event);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "channel-read-codec-name", session->read_impl.iananame);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-read-codec-rate", "%d", session->read_impl.actual_samples_per_second);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-read-codec-bit-rate", "%d", session->read_impl.bits_per_second);
if (session->read_impl.actual_samples_per_second != session->read_impl.samples_per_second) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-reported-read-codec-rate", "%d", session->read_impl.samples_per_second);
}
switch_event_fire(&event);
}
switch_channel_set_variable(channel, "read_codec", session->read_impl.iananame);
switch_channel_set_variable(channel, "original_read_codec", session->read_impl.iananame);
switch_snprintf(tmp, sizeof(tmp), "%d", session->read_impl.actual_samples_per_second);
switch_channel_set_variable(channel, "read_rate", tmp);
switch_channel_set_variable(channel, "original_read_rate", tmp);
session->raw_read_frame.codec = session->read_codec;
session->raw_write_frame.codec = session->read_codec;
session->enc_read_frame.codec = session->read_codec;
session->enc_write_frame.codec = session->read_codec;
}
end:
if (session->read_codec) {
switch_channel_set_flag(channel, CF_MEDIA_SET);
}
switch_mutex_unlock(session->codec_read_mutex);
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_read_codec(switch_core_session_t *session, switch_codec_t *codec)
{
switch_event_t *event;
switch_channel_t *channel = switch_core_session_get_channel(session);
char tmp[30];
switch_status_t status = SWITCH_STATUS_SUCCESS;
switch_mutex_lock(session->codec_read_mutex);
if (codec && (!codec->implementation || !switch_core_codec_ready(codec))) {
codec = NULL;
}
if (codec) {
if (!session->real_read_codec) {
session->read_codec = session->real_read_codec = codec;
if (codec->implementation) {
session->read_impl = *codec->implementation;
session->real_read_impl = *codec->implementation;
} else {
memset(&session->read_impl, 0, sizeof(session->read_impl));
}
} else {
if (codec == session->read_codec) {
goto end;
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s Push codec %s:%d\n",
switch_channel_get_name(session->channel), codec->implementation->iananame, codec->implementation->ianacode);
codec->next = session->read_codec;
session->read_codec = codec;
if (codec->implementation) {
session->read_impl = *codec->implementation;
} else {
memset(&session->read_impl, 0, sizeof(session->read_impl));
}
}
} else {
if (session->read_codec == session->real_read_codec) {
goto end;
}
if (session->read_codec->next) {
switch_codec_t *old = session->read_codec;
session->read_codec = session->read_codec->next;
if (session->read_codec->implementation) {
session->read_impl = *session->read_codec->implementation;
} else {
memset(&session->read_impl, 0, sizeof(session->read_impl));
}
old->next = NULL;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s Restore previous codec %s:%d.\n",
switch_channel_get_name(session->channel),
session->read_impl.iananame ? session->read_impl.iananame : "N/A", session->read_impl.ianacode);
} else if (session->real_read_codec) {
session->read_codec = session->real_read_codec;
if (session->real_read_codec->implementation) {
session->read_impl = *session->real_read_codec->implementation;
} else {
memset(&session->read_impl, 0, sizeof(session->read_impl));
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Restore original codec.\n");
} else {
status = SWITCH_STATUS_FALSE;
goto end;
}
}
if (!session->read_codec) {
status = SWITCH_STATUS_FALSE;
goto end;
}
if (session->read_codec && session->read_impl.decoded_bytes_per_packet) {
if (switch_event_create(&event, SWITCH_EVENT_CODEC) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_data(session->channel, event);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "channel-read-codec-name", session->read_impl.iananame);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-read-codec-rate", "%d", session->read_impl.actual_samples_per_second);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-read-codec-bit-rate", "%d", session->read_impl.bits_per_second);
if (session->read_impl.actual_samples_per_second != session->read_impl.samples_per_second) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-reported-read-codec-rate", "%d", session->read_impl.samples_per_second);
}
switch_event_fire(&event);
}
switch_channel_set_variable(channel, "read_codec", session->read_impl.iananame);
switch_snprintf(tmp, sizeof(tmp), "%d", session->read_impl.actual_samples_per_second);
switch_channel_set_variable(channel, "read_rate", tmp);
session->raw_read_frame.codec = session->read_codec;
session->raw_write_frame.codec = session->read_codec;
session->enc_read_frame.codec = session->read_codec;
session->enc_write_frame.codec = session->read_codec;
}
end:
if (session->read_codec) {
switch_channel_set_flag(channel, CF_MEDIA_SET);
}
switch_mutex_unlock(session->codec_read_mutex);
return status;
}
SWITCH_DECLARE(switch_codec_t *) switch_core_session_get_effective_read_codec(switch_core_session_t *session)
{
switch_codec_t *codec;
codec = session->read_codec;
return codec;
}
SWITCH_DECLARE(switch_codec_t *) switch_core_session_get_read_codec(switch_core_session_t *session)
{
switch_codec_t *codec;
codec = session->real_read_codec ? session->real_read_codec : session->read_codec;
return codec;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_get_read_impl(switch_core_session_t *session, switch_codec_implementation_t *impp)
{
if (session->read_impl.codec_id) {
*impp = session->read_impl;
return SWITCH_STATUS_SUCCESS;
}
memset(impp, 0, sizeof(*impp));
impp->number_of_channels = 1;
return SWITCH_STATUS_FALSE;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_get_real_read_impl(switch_core_session_t *session, switch_codec_implementation_t *impp)
{
if (session->real_read_impl.codec_id) {
*impp = session->real_read_impl;
return SWITCH_STATUS_SUCCESS;
}
return switch_core_session_get_read_impl(session, impp);
}
SWITCH_DECLARE(switch_status_t) switch_core_session_get_write_impl(switch_core_session_t *session, switch_codec_implementation_t *impp)
{
if (session->write_impl.codec_id) {
*impp = session->write_impl;
return SWITCH_STATUS_SUCCESS;
}
memset(impp, 0, sizeof(*impp));
impp->number_of_channels = 1;
return SWITCH_STATUS_FALSE;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_get_video_read_impl(switch_core_session_t *session, switch_codec_implementation_t *impp)
{
if (session->video_read_impl.codec_id) {
*impp = session->video_read_impl;
return SWITCH_STATUS_SUCCESS;
}
memset(impp, 0, sizeof(*impp));
impp->number_of_channels = 1;
return SWITCH_STATUS_FALSE;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_get_video_write_impl(switch_core_session_t *session, switch_codec_implementation_t *impp)
{
if (session->video_write_impl.codec_id) {
*impp = session->video_write_impl;
return SWITCH_STATUS_SUCCESS;
}
memset(impp, 0, sizeof(*impp));
impp->number_of_channels = 1;
return SWITCH_STATUS_FALSE;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_read_impl(switch_core_session_t *session, const switch_codec_implementation_t *impp)
{
session->read_impl = *impp;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_write_impl(switch_core_session_t *session, const switch_codec_implementation_t *impp)
{
session->write_impl = *impp;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_video_read_impl(switch_core_session_t *session, const switch_codec_implementation_t *impp)
{
session->video_read_impl = *impp;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_video_write_impl(switch_core_session_t *session, const switch_codec_implementation_t *impp)
{
session->video_write_impl = *impp;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_write_codec(switch_core_session_t *session, switch_codec_t *codec)
{
switch_event_t *event;
switch_channel_t *channel = switch_core_session_get_channel(session);
char tmp[30];
switch_status_t status = SWITCH_STATUS_SUCCESS;
switch_mutex_lock(session->codec_write_mutex);
if (!codec || !codec->implementation || !switch_core_codec_ready(codec)) {
if (session->real_write_codec) {
session->write_codec = session->real_write_codec;
session->write_impl = *session->real_write_codec->implementation;
session->real_write_codec = NULL;
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Cannot set NULL codec!\n");
status = SWITCH_STATUS_FALSE;
goto end;
}
} else if (session->write_codec) {
if (session->real_write_codec) {
if (codec == session->real_write_codec) {
session->write_codec = codec;
session->write_impl = *codec->implementation;
session->real_write_codec = NULL;
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Cannot double-set codec!\n");
status = SWITCH_STATUS_FALSE;
goto end;
}
} else {
session->real_write_codec = session->write_codec;
session->write_codec = codec;
session->write_impl = *codec->implementation;
}
} else {
session->write_codec = codec;
session->write_impl = *codec->implementation;
}
if (session->write_codec && codec && session->write_impl.codec_id) {
if (switch_event_create(&event, SWITCH_EVENT_CODEC) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_data(session->channel, event);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Channel-Write-Codec-Name", session->write_impl.iananame);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Channel-Write-Codec-Rate", "%d", session->write_impl.actual_samples_per_second);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Channel-Write-codec-bit-rate", "%d", session->write_impl.bits_per_second);
if (session->write_impl.actual_samples_per_second != session->write_impl.samples_per_second) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Channel-Reported-Write-Codec-Rate", "%d",
session->write_impl.actual_samples_per_second);
}
switch_event_fire(&event);
}
switch_channel_set_variable(channel, "write_codec", session->write_impl.iananame);
switch_snprintf(tmp, sizeof(tmp), "%d", session->write_impl.actual_samples_per_second);
switch_channel_set_variable(channel, "write_rate", tmp);
}
end:
switch_mutex_unlock(session->codec_write_mutex);
return status;
}
SWITCH_DECLARE(switch_codec_t *) switch_core_session_get_effective_write_codec(switch_core_session_t *session)
{
switch_codec_t *codec;
codec = session->write_codec;
return codec;
}
SWITCH_DECLARE(switch_codec_t *) switch_core_session_get_write_codec(switch_core_session_t *session)
{
switch_codec_t *codec;
codec = session->real_write_codec ? session->real_write_codec : session->write_codec;
return codec;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_video_read_codec(switch_core_session_t *session, switch_codec_t *codec)
{
switch_event_t *event;
switch_channel_t *channel = switch_core_session_get_channel(session);
char tmp[30];
switch_status_t status = SWITCH_STATUS_SUCCESS;
if (!codec || !codec->implementation || !switch_core_codec_ready(codec)) {
if (session->video_read_codec) {
session->video_read_codec = NULL;
status = SWITCH_STATUS_SUCCESS;
goto end;
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Cannot set NULL codec!\n");
status = SWITCH_STATUS_FALSE;
goto end;
}
if (switch_event_create(&event, SWITCH_EVENT_CODEC) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_data(session->channel, event);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "channel-video-read-codec-name", codec->implementation->iananame);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-video-read-codec-rate", "%d", codec->implementation->actual_samples_per_second);
switch_event_fire(&event);
}
switch_channel_set_variable(channel, "video_read_codec", codec->implementation->iananame);
switch_snprintf(tmp, sizeof(tmp), "%d", codec->implementation->actual_samples_per_second);
switch_channel_set_variable(channel, "video_read_rate", tmp);
session->video_read_codec = codec;
if (codec->implementation) {
session->video_read_impl = *codec->implementation;
} else {
memset(&session->video_read_impl, 0, sizeof(session->video_read_impl));
}
end:
return status;
}
SWITCH_DECLARE(switch_codec_t *) switch_core_session_get_video_read_codec(switch_core_session_t *session)
{
switch_codec_t *codec;
codec = session->video_read_codec;
return codec;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_set_video_write_codec(switch_core_session_t *session, switch_codec_t *codec)
{
switch_event_t *event;
switch_channel_t *channel = switch_core_session_get_channel(session);
char tmp[30];
switch_status_t status = SWITCH_STATUS_SUCCESS;
if (!codec || !codec->implementation || !switch_core_codec_ready(codec)) {
if (session->video_write_codec) {
session->video_write_codec = NULL;
status = SWITCH_STATUS_SUCCESS;
goto end;
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Cannot set NULL codec!\n");
status = SWITCH_STATUS_FALSE;
goto end;
}
if (switch_event_create(&event, SWITCH_EVENT_CODEC) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_data(session->channel, event);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "channel-video-write-codec-name", codec->implementation->iananame);
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "channel-video-write-codec-rate", "%d", codec->implementation->actual_samples_per_second);
switch_event_fire(&event);
}
switch_channel_set_variable(channel, "video_write_codec", codec->implementation->iananame);
switch_snprintf(tmp, sizeof(tmp), "%d", codec->implementation->actual_samples_per_second);
switch_channel_set_variable(channel, "video_write_rate", tmp);
session->video_write_codec = codec;
session->video_write_impl = *codec->implementation;
end:
return status;
}
SWITCH_DECLARE(switch_codec_t *) switch_core_session_get_video_write_codec(switch_core_session_t *session)
{
switch_codec_t *codec;
codec = session->video_write_codec;
return codec;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_parse_fmtp(const char *codec_name, const char *fmtp, uint32_t rate, switch_codec_fmtp_t *codec_fmtp)
{
switch_codec_interface_t *codec_interface;
switch_status_t status = SWITCH_STATUS_FALSE;
if (zstr(codec_name) || zstr(fmtp) || !codec_fmtp) {
return SWITCH_STATUS_FALSE;
}
memset(codec_fmtp, 0, sizeof(*codec_fmtp));
if ((codec_interface = switch_loadable_module_get_codec_interface(codec_name, NULL))) {
if (codec_interface->parse_fmtp) {
codec_fmtp->actual_samples_per_second = rate;
status = codec_interface->parse_fmtp(fmtp, codec_fmtp);
}
UNPROTECT_INTERFACE(codec_interface);
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_reset(switch_codec_t *codec)
{
switch_assert(codec != NULL);
codec->implementation->destroy(codec);
codec->implementation->init(codec, codec->flags, NULL);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_copy(switch_codec_t *codec, switch_codec_t *new_codec,
const switch_codec_settings_t *codec_settings, switch_memory_pool_t *pool)
{
switch_assert(codec != NULL);
switch_assert(new_codec != NULL);
return switch_core_codec_init(new_codec,
codec->implementation->iananame,
codec->implementation->modname,
codec->fmtp_in,
codec->implementation->samples_per_second,
codec->implementation->microseconds_per_packet / 1000,
codec->implementation->number_of_channels,
codec->flags,
codec_settings,
pool);
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_init_with_bitrate(switch_codec_t *codec, const char *codec_name, const char *modname, const char *fmtp,
uint32_t rate, int ms, int channels, uint32_t bitrate, uint32_t flags,
const switch_codec_settings_t *codec_settings, switch_memory_pool_t *pool)
{
switch_codec_interface_t *codec_interface;
const switch_codec_implementation_t *iptr, *implementation = NULL;
switch_assert(codec != NULL);
switch_assert(codec_name != NULL);
memset(codec, 0, sizeof(*codec));
if (pool) {
codec->session = switch_core_memory_pool_get_data(pool, "__session");
}
if (strchr(codec_name, '.')) {
char *p = NULL;
codec_name = switch_core_strdup(pool, codec_name);
if ((p = strchr(codec_name, '.'))) {
*p++ = '\0';
modname = codec_name;
codec_name = p;
}
}
if ((codec_interface = switch_loadable_module_get_codec_interface(codec_name, modname)) == 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid codec %s!\n", codec_name);
return SWITCH_STATUS_GENERR;
}
if (!strncasecmp(codec_name, "PROXY", 5)) {
for (iptr = codec_interface->implementations; iptr; iptr = iptr->next) {
if ((!channels || channels == iptr->number_of_channels)) {
implementation = iptr;
break;
}
}
goto found;
}
/* If no specific codec interval is requested opt for 20ms above all else because lots of stuff assumes it */
if (!ms) {
for (iptr = codec_interface->implementations; iptr; iptr = iptr->next) {
uint32_t crate = !strcasecmp(codec_name, "g722") ? iptr->samples_per_second : iptr->actual_samples_per_second;
if ((!rate || rate == crate) && (!bitrate || bitrate == (uint32_t)iptr->bits_per_second) &&
(20 == (iptr->microseconds_per_packet / 1000)) && (!channels || channels == iptr->number_of_channels)) {
implementation = iptr;
goto found;
}
}
}
/* Either looking for a specific interval or there was no interval specified and there wasn't one @20ms available */
for (iptr = codec_interface->implementations; iptr; iptr = iptr->next) {
uint32_t crate = !strcasecmp(codec_name, "g722") ? iptr->samples_per_second : iptr->actual_samples_per_second;
if ((!rate || rate == crate) && (!bitrate || bitrate == (uint32_t)iptr->bits_per_second) &&
(!ms || ms == (iptr->microseconds_per_packet / 1000)) && (!channels || channels == iptr->number_of_channels)) {
implementation = iptr;
break;
}
}
found:
if (implementation) {
switch_status_t status;
codec->codec_interface = codec_interface;
codec->implementation = implementation;
codec->flags = flags;
if (pool) {
codec->memory_pool = pool;
} else {
if ((status = switch_core_new_memory_pool(&codec->memory_pool)) != SWITCH_STATUS_SUCCESS) {
return status;
}
switch_set_flag(codec, SWITCH_CODEC_FLAG_FREE_POOL);
}
if (fmtp) {
codec->fmtp_in = switch_core_strdup(codec->memory_pool, fmtp);
}
implementation->init(codec, flags, codec_settings);
switch_mutex_init(&codec->mutex, SWITCH_MUTEX_NESTED, codec->memory_pool);
switch_set_flag(codec, SWITCH_CODEC_FLAG_READY);
return SWITCH_STATUS_SUCCESS;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Codec %s Exists but not at the desired implementation. %dhz %dms %dch\n",
codec_name, rate, ms, channels);
}
UNPROTECT_INTERFACE(codec_interface);
return SWITCH_STATUS_NOTIMPL;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_encode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *decoded_data,
uint32_t decoded_data_len,
uint32_t decoded_rate,
void *encoded_data, uint32_t *encoded_data_len, uint32_t *encoded_rate, unsigned int *flag)
{
switch_status_t status;
switch_assert(codec != NULL);
switch_assert(encoded_data != NULL);
switch_assert(decoded_data != NULL);
if (!codec->implementation || !switch_core_codec_ready(codec)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (!switch_test_flag(codec, SWITCH_CODEC_FLAG_ENCODE)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec encoder is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (codec->mutex) switch_mutex_lock(codec->mutex);
status = codec->implementation->encode(codec, other_codec, decoded_data, decoded_data_len,
decoded_rate, encoded_data, encoded_data_len, encoded_rate, flag);
if (codec->mutex) switch_mutex_unlock(codec->mutex);
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_decode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *encoded_data,
uint32_t encoded_data_len,
uint32_t encoded_rate,
void *decoded_data, uint32_t *decoded_data_len, uint32_t *decoded_rate, unsigned int *flag)
{
switch_status_t status;
switch_assert(codec != NULL);
switch_assert(encoded_data != NULL);
switch_assert(decoded_data != NULL);
if (!codec->implementation || !switch_core_codec_ready(codec)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Decode Codec is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (!switch_test_flag(codec, SWITCH_CODEC_FLAG_DECODE)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec decoder is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (codec->implementation->encoded_bytes_per_packet) {
uint32_t frames = encoded_data_len / codec->implementation->encoded_bytes_per_packet / codec->implementation->number_of_channels;
if (frames && codec->implementation->decoded_bytes_per_packet * frames > *decoded_data_len) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Buffer size sanity check failed! edl:%u ebpp:%u fr:%u ddl:%u\n",
encoded_data_len, codec->implementation->encoded_bytes_per_packet, frames, *decoded_data_len);
*decoded_data_len = codec->implementation->decoded_bytes_per_packet;
memset(decoded_data, 255, *decoded_data_len);
return SWITCH_STATUS_SUCCESS;
}
}
if (codec->mutex) switch_mutex_lock(codec->mutex);
status = codec->implementation->decode(codec, other_codec, encoded_data, encoded_data_len, encoded_rate,
decoded_data, decoded_data_len, decoded_rate, flag);
if (codec->mutex) switch_mutex_unlock(codec->mutex);
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_encode_video(switch_codec_t *codec, switch_frame_t *frame)
{
switch_status_t status = SWITCH_STATUS_FALSE;
switch_assert(codec != NULL);
if (!codec->implementation || !switch_core_codec_ready(codec)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (!switch_test_flag(codec, SWITCH_CODEC_FLAG_ENCODE)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec encoder is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (codec->mutex) switch_mutex_lock(codec->mutex);
if (codec->implementation->encode_video) {
status = codec->implementation->encode_video(codec, frame);
if (status == SWITCH_STATUS_MORE_DATA) {
frame->flags |= SFF_SAME_IMAGE;
} else {
frame->flags &= ~SFF_SAME_IMAGE;
}
frame->packetlen = frame->datalen + 12;
}
if (codec->mutex) switch_mutex_unlock(codec->mutex);
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_decode_video(switch_codec_t *codec, switch_frame_t *frame)
{
switch_status_t status = SWITCH_STATUS_FALSE;
switch_assert(codec != NULL);
switch_assert(frame != NULL);
if (!codec->implementation || !switch_core_codec_ready(codec)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Decode Codec is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (!switch_test_flag(codec, SWITCH_CODEC_FLAG_DECODE)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec decoder is not initialized!\n");
return SWITCH_STATUS_NOT_INITALIZED;
}
if (codec->mutex) switch_mutex_lock(codec->mutex);
if (codec->implementation->decode_video) {
status = codec->implementation->decode_video(codec, frame);
}
if (codec->mutex) switch_mutex_unlock(codec->mutex);
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_control(switch_codec_t *codec,
switch_codec_control_command_t cmd,
switch_codec_control_type_t ctype,
void *cmd_data,
switch_codec_control_type_t atype,
void *cmd_arg,
switch_codec_control_type_t *rtype,
void **ret_data)
{
switch_status_t status = SWITCH_STATUS_FALSE;
switch_assert(codec != NULL);
if (!codec->implementation || !switch_core_codec_ready(codec)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec is not initialized!\n");
abort();
//return SWITCH_STATUS_NOT_INITALIZED;
}
if (codec->mutex) switch_mutex_lock(codec->mutex);
if (codec->implementation->codec_control) {
status = codec->implementation->codec_control(codec, cmd, ctype, cmd_data, atype, cmd_arg, rtype, ret_data);
}
if (codec->mutex) switch_mutex_unlock(codec->mutex);
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_codec_destroy(switch_codec_t *codec)
{
switch_mutex_t *mutex = codec->mutex;
switch_memory_pool_t *pool = codec->memory_pool;
int free_pool = 0;
switch_assert(codec != NULL);
if (mutex) switch_mutex_lock(mutex);
if (switch_core_codec_ready(codec)) {
switch_clear_flag(codec, SWITCH_CODEC_FLAG_READY);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Codec is not initialized!\n");
if (mutex) switch_mutex_unlock(mutex);
return SWITCH_STATUS_NOT_INITALIZED;
}
if (switch_test_flag(codec, SWITCH_CODEC_FLAG_FREE_POOL)) {
free_pool = 1;
}
codec->implementation->destroy(codec);
UNPROTECT_INTERFACE(codec->codec_interface);
if (mutex) switch_mutex_unlock(mutex);
if (free_pool) {
switch_core_destroy_memory_pool(&pool);
}
memset(codec, 0, sizeof(*codec));
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
*/
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