--- /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):
+ *
+ * Anthony Minessale II <anthmct@yahoo.com>
+ * Brian K. West <brian.west@mac.com>
+ *
+ * mod_g723.c -- G723.1 Codec Module
+ *
+ */
+#include "switch.h"
+#include "g723.h"
+
+#define TYPE_HIGH 0x0
+#define TYPE_LOW 0x1
+#define TYPE_SILENCE 0x2
+#define TYPE_DONTSEND 0x3
+#define TYPE_MASK 0x3
+
+Flag UsePf = True;
+Flag UseHp = True;
+Flag UseVx = True;
+
+enum Crate WrkRate = Rate63;
+
+static const char modname[] = "mod_g723";
+
+struct g723_context {
+ struct cod_state encoder_object;
+ struct dec_state decoder_object;
+ float cod_float_buf[Frame];
+ float dec_float_buf[Frame];
+};
+
+static switch_status_t switch_g723_init(switch_codec_t *codec, switch_codec_flag_t flags,
+ const switch_codec_settings_t *codec_settings)
+{
+ struct g723_context *context = NULL;
+ int encoding, decoding;
+
+ encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+ decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+ if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct g723_context))))) {
+ return SWITCH_STATUS_FALSE;
+ } else {
+
+ if (encoding) {
+ Init_Coder(&context->encoder_object);
+ if( UseVx ) {
+ Init_Vad(&context->encoder_object);
+ Init_Cod_Cng(&context->encoder_object);
+ }
+ }
+
+ if (decoding) {
+ Init_Decod(&context->decoder_object);
+ Init_Dec_Cng(&context->decoder_object);
+ }
+
+ codec->private_info = context;
+
+ return SWITCH_STATUS_SUCCESS;
+ }
+}
+
+
+static switch_status_t switch_g723_destroy(switch_codec_t *codec)
+{
+ codec->private_info = NULL;
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_g723_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)
+{
+ struct g723_context *context = codec->private_info;
+ int16_t *decoded_slin_buf = (int16_t *) decoded_data;
+ char *ebuf = (char *) encoded_data;
+ int x;
+
+ if (!context) {
+ return SWITCH_STATUS_FALSE;
+ }
+
+ for(x = 0; x < Frame; x++) {
+ context->cod_float_buf[x] = decoded_slin_buf[x];
+ }
+
+ Coder(&context->encoder_object, (FLOAT *)context->cod_float_buf, ebuf);
+ *encoded_data_len = codec->implementation->encoded_bytes_per_frame;
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_g723_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)
+{
+ struct g723_context *context = codec->private_info;
+ int x;
+ int16_t *to_slin_buf = decoded_data;
+
+ if (!context) {
+ return SWITCH_STATUS_FALSE;
+ }
+
+ Decod(&context->decoder_object, (FLOAT *) context->dec_float_buf, (char *) decoded_data, 0);
+
+ for (x=0;x<Frame;x++) {
+ to_slin_buf[x] = context->dec_float_buf[x];
+ }
+ *decoded_data_len = codec->implementation->bytes_per_frame;
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+/* Registration */
+
+static const switch_codec_implementation_t g723_implementation = {
+ /*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
+ /*.ianacode */ 4,
+ /*.iananame */ "G723",
+ /*.samples_per_second */ 8000,
+ /*.bits_per_second */ 6300,
+ /*.microseconds_per_frame */ 30000,
+ /*.samples_per_frame */ 240,
+ /*.bytes_per_frame */ 480,
+ /*.encoded_bytes_per_frame */ 24,
+ /*.number_of_channels */ 1,
+ /*.pref_frames_per_packet */ 2,
+ /*.max_frames_per_packet */ 2,
+ /*.init */ switch_g723_init,
+ /*.encode */ switch_g723_encode,
+ /*.decode */ switch_g723_decode,
+ /*.destroy */ switch_g723_destroy,
+};
+
+static const switch_codec_interface_t g723_codec_interface = {
+ /*.interface_name */ "g723 6.3k",
+ /*.implementations */ &g723_implementation,
+};
+
+static switch_loadable_module_interface_t g723_module_interface = {
+ /*.module_name */ modname,
+ /*.endpoint_interface */ NULL,
+ /*.timer_interface */ NULL,
+ /*.dialplan_interface */ NULL,
+ /*.codec_interface */ &g723_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 = &g723_module_interface;
+
+ /* indicate that the module should continue to be loaded */
+ return SWITCH_STATUS_SUCCESS;
+}
projects / thirdparty / freeswitch.git / commitdiff
