--- /dev/null
+/*
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
+ *
+ * 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 <anthmct@yahoo.com>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Brian K. West <brian.west@mac.com>
+ *
+ *
+ * mod_g726.c -- G726 Codec Module
+ *
+ */
+#include "switch.h"
+#include "g72x.h"
+
+static const char modname[] = "mod_g726";
+
+static switch_status_t switch_g726_init(switch_codec_t *codec, switch_codec_flag_t flags,
+ const switch_codec_settings_t *codec_settings)
+{
+ int encoding, decoding;
+ struct g726_state_s *context = NULL;
+
+ encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+ decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+ if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct g726_state_s))))) {
+ return SWITCH_STATUS_FALSE;
+ } else {
+ g726_init_state(context);
+ codec->private_info = context;
+ return SWITCH_STATUS_SUCCESS;
+ }
+}
+
+
+static switch_status_t switch_g726_destroy(switch_codec_t *codec)
+{
+ codec->private_info = NULL;
+ return SWITCH_STATUS_SUCCESS;
+}
+
+#define define_encoder(func, coder, datalen)\
+static switch_status_t func(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)\
+{\
+ struct g726_state_s *context = codec->private_info;\
+\
+ if (!context) {\
+ return SWITCH_STATUS_FALSE;\
+ }\
+\
+ if (decoded_data_len % datalen == 0) {\
+ coder(*(int *)decoded_data , AUDIO_ENCODING_LINEAR, context);\
+ }\
+\
+ return SWITCH_STATUS_SUCCESS;\
+}\
+
+#define define_decoder(func, coder, datalen)\
+static switch_status_t func(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)\
+{\
+ struct g726_state_s *context = codec->private_info;\
+\
+ if (!context) {\
+ return SWITCH_STATUS_FALSE;\
+ }\
+\
+ if (encoded_data_len % datalen == 0) {\
+ coder(*(int *)encoded_data, AUDIO_ENCODING_LINEAR, context);\
+}\
+\
+ return SWITCH_STATUS_SUCCESS;\
+}\
+
+define_encoder(switch_g726_16k_encode, g726_16_encoder, 160)
+define_decoder(switch_g726_16k_decode, g726_16_decoder, 40)
+
+define_encoder(switch_g726_24k_encode, g726_24_encoder, 160)
+define_decoder(switch_g726_24k_decode, g726_24_decoder, 60)
+
+define_encoder(switch_g726_32k_encode, g726_32_encoder, 160)
+define_decoder(switch_g726_32k_decode, g726_32_decoder, 80)
+
+define_encoder(switch_g726_40k_encode, g726_40_encoder, 160)
+define_decoder(switch_g726_40k_decode, g726_40_decoder, 100)
+
+
+/* Registration */
+
+static const switch_codec_implementation_t g726_16k_implementation = {
+ /*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
+ /*.ianacode */ 2,
+ /*.iananame */ "G726-16",
+ /*.samples_per_second */ 8000,
+ /*.bits_per_second */ 16000,
+ /*.microseconds_per_frame */ 20000,
+ /*.samples_per_frame */ 160,
+ /*.bytes_per_frame */ 40,
+ /*.encoded_bytes_per_frame */ 10,
+ /*.number_of_channels */ 1,
+ /*.pref_frames_per_packet */ 1,
+ /*.max_frames_per_packet */ 1,
+ /*.init */ switch_g726_init,
+ /*.encode */ switch_g726_16k_encode,
+ /*.decode */ switch_g726_16k_decode,
+ /*.destroy */ switch_g726_destroy,
+};
+
+
+static const switch_codec_implementation_t g726_24k_implementation = {
+ /*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
+ /*.ianacode */ 2,
+ /*.iananame */ "G726-24",
+ /*.samples_per_second */ 8000,
+ /*.bits_per_second */ 24000,
+ /*.microseconds_per_frame */ 20000,
+ /*.samples_per_frame */ 160,
+ /*.bytes_per_frame */ 60,
+ /*.encoded_bytes_per_frame */ 10,
+ /*.number_of_channels */ 1,
+ /*.pref_frames_per_packet */ 1,
+ /*.max_frames_per_packet */ 1,
+ /*.init */ switch_g726_init,
+ /*.encode */ switch_g726_24k_encode,
+ /*.decode */ switch_g726_24k_decode,
+ /*.destroy */ switch_g726_destroy,
+};
+
+static const switch_codec_implementation_t g726_32k_implementation = {
+ /*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
+ /*.ianacode */ 2,
+ /*.iananame */ "G726-32",
+ /*.samples_per_second */ 8000,
+ /*.bits_per_second */ 32000,
+ /*.microseconds_per_frame */ 20000,
+ /*.samples_per_frame */ 160,
+ /*.bytes_per_frame */ 80,
+ /*.encoded_bytes_per_frame */ 10,
+ /*.number_of_channels */ 1,
+ /*.pref_frames_per_packet */ 1,
+ /*.max_frames_per_packet */ 1,
+ /*.init */ switch_g726_init,
+ /*.encode */ switch_g726_32k_encode,
+ /*.decode */ switch_g726_32k_decode,
+ /*.destroy */ switch_g726_destroy,
+};
+
+static const switch_codec_implementation_t g726_40k_implementation = {
+ /*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
+ /*.ianacode */ 2,
+ /*.iananame */ "G726-40",
+ /*.samples_per_second */ 8000,
+ /*.bits_per_second */ 40000,
+ /*.microseconds_per_frame */ 20000,
+ /*.samples_per_frame */ 160,
+ /*.bytes_per_frame */ 100,
+ /*.encoded_bytes_per_frame */ 10,
+ /*.number_of_channels */ 1,
+ /*.pref_frames_per_packet */ 1,
+ /*.max_frames_per_packet */ 1,
+ /*.init */ switch_g726_init,
+ /*.encode */ switch_g726_40k_encode,
+ /*.decode */ switch_g726_40k_decode,
+ /*.destroy */ switch_g726_destroy,
+};
+
+const switch_codec_interface_t g726_16k_codec_interface = {
+ /*.interface_name */ "G.726 16k",
+ /*.implementations */ &g726_16k_implementation,
+};
+const switch_codec_interface_t g726_24k_codec_interface = {
+ /*.interface_name */ "G.726 24k",
+ /*.implementations */ &g726_24k_implementation,
+ /*.next */ &g726_16k_codec_interface
+};
+const switch_codec_interface_t g726_32k_codec_interface = {
+ /*.interface_name */ "G.726 32k",
+ /*.implementations */ &g726_32k_implementation,
+ /*.next */ &g726_24k_codec_interface
+};
+const switch_codec_interface_t g726_40k_codec_interface = {
+ /*.interface_name */ "G.726 40k",
+ /*.implementations */ &g726_40k_implementation,
+ /*.next */ &g726_32k_codec_interface
+};
+
+static switch_loadable_module_interface_t g726_module_interface = {
+ /*.module_name */ modname,
+ /*.endpoint_interface */ NULL,
+ /*.timer_interface */ NULL,
+ /*.dialplan_interface */ NULL,
+ /*.codec_interface */ &g726_40k_codec_interface,
+ /*.application_interface */ NULL
+};
+
+SWITCH_MOD_DECLARE(switch_status_t) switch_module_load(const switch_loadable_module_interface_t **module_interface,
+ char *filename)
+{
+ /* connect my internal structure to the blank pointer passed to me */
+ *module_interface = &g726_module_interface;
+
+ /* indicate that the module should continue to be loaded */
+ return SWITCH_STATUS_SUCCESS;
+}
projects / thirdparty / freeswitch.git / commitdiff
