Author: brian Date: Thu Feb 12 16:45:11 2009 New Revision: 11971 Log: mod_amrwb passthru codec Added: freeswitch/trunk/src/mod/codecs/mod_amrwb/ freeswitch/trunk/src/mod/codecs/mod_amrwb/Makefile freeswitch/trunk/src/mod/codecs/mod_amrwb/mod_amrwb.c Added: freeswitch/trunk/src/mod/codecs/mod_amrwb/Makefile ============================================================================== --- (empty file) +++ freeswitch/trunk/src/mod/codecs/mod_amrwb/Makefile Thu Feb 12 16:45:11 2009 @@ -0,0 +1,10 @@ +BASE=../../../.. + +AMR_DIR=$(BASE)/libs/amrwb +AMR_A=$(AMR_DIR)/libamrwb.a + +LOCAL_INSERT_CFLAGS=if test -d $(AMR_DIR); then echo "-I$(AMR_DIR)" ; else echo "-DAMRWB_PASSTHROUGH" ; fi ; +LOCAL_INSERT_LDFLAGS=test ! -d $(AMR_DIR) || echo "$(AMR_A)"; + + +include $(BASE)/build/modmake.rules Added: freeswitch/trunk/src/mod/codecs/mod_amrwb/mod_amrwb.c ============================================================================== --- (empty file) +++ freeswitch/trunk/src/mod/codecs/mod_amrwb/mod_amrwb.c Thu Feb 12 16:45:11 2009 @@ -0,0 +1,299 @@ +/* + * 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> + * + * The amrwb codec itself is not distributed with this module. + * + * mod_amrwb.c -- GSM-AMRWB Codec Module + * + */ + +#include "switch.h" + +SWITCH_MODULE_LOAD_FUNCTION(mod_amrwb_load); +SWITCH_MODULE_DEFINITION(mod_amrwb, mod_amrwb_load, NULL, NULL); + +#ifndef AMRWB_PASSTHROUGH +#include "dec_if.h" +#include "enc_if.h" + +typedef enum { + AMRWB_OPT_OCTET_ALIGN = (1 << 0), + AMRWB_OPT_CRC = (1 << 1), + AMRWB_OPT_MODE_CHANGE_NEIGHBOR = (1 << 2), + AMRWB_OPT_ROBUST_SORTING = (1 << 3), + AMRWB_OPT_INTERLEAVING = (1 << 4) +} amrwb_flag_t; + +typedef enum { + AMRWB_BITRATE_7K = 0, + AMRWB_BITRATE_8K, + AMRWB_BITRATE_12K, + AMRWB_BITRATE_14K, + AMRWB_BITRATE_16K, + AMRWB_BITRATE_18K, + AMRWB_BITRATE_20K, + AMRWB_BITRATE_23K, + AMRWB_BITRATE_24K +} amrwb_bitrate_t; + +struct amrwb_context { + void *encoder_state; + void *decoder_state; + switch_byte_t enc_modes; + switch_byte_t enc_mode; + uint32_t change_period; + switch_byte_t max_ptime; + switch_byte_t ptime; + switch_byte_t channels; + switch_byte_t flags; +}; + +#define AMRWB_DEFAULT_BITRATE AMRWB_BITRATE_24K + +static struct { + switch_byte_t default_bitrate; +} globals; + +#endif + +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 +} + +static switch_status_t switch_amrwb_destroy(switch_codec_t *codec) +{ +#ifndef AMRWB_PASSTHROUGH + struct amrwb_context *context = codec->private_info; + + if (context->encoder_state) { + E_IF_exit(context->encoder_state); + } + if (context->decoder_state) { + D_IF_exit(context->decoder_state); + } + codec->private_info = NULL; +#endif + return SWITCH_STATUS_SUCCESS; +} + +static switch_status_t switch_amrwb_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) +{ +#ifdef AMRWB_PASSTHROUGH + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "This codec is only usable in passthrough mode!\n"); + return SWITCH_STATUS_FALSE; +#else + struct amrwb_context *context = codec->private_info; + + if (!context) { + return SWITCH_STATUS_FALSE; + } + + *encoded_data_len = E_IF_encode(context->encoder_state, context->enc_mode, (int16_t *) decoded_data, (switch_byte_t *) encoded_data, 0); + + return SWITCH_STATUS_SUCCESS; +#endif +} + +static switch_status_t switch_amrwb_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) +{ +#ifdef AMRWB_PASSTHROUGH + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "This codec is only usable in passthrough mode!\n"); + return SWITCH_STATUS_FALSE; +#else + struct amrwb_context *context = codec->private_info; + + if (!context) { + return SWITCH_STATUS_FALSE; + } + + D_IF_decode(context->decoder_state, (unsigned char *) encoded_data, (int16_t *) decoded_data, 0); + *decoded_data_len = codec->implementation->decoded_bytes_per_packet; + + return SWITCH_STATUS_SUCCESS; +#endif +} + +/* Registration */ +SWITCH_MODULE_LOAD_FUNCTION(mod_amrwb_load) +{ + switch_codec_interface_t *codec_interface; +#ifndef AMRWB_PASSTHROUGH + char *cf = "amrwb.conf"; + switch_xml_t cfg, xml, settings, param; + + memset(&globals, 0, sizeof(globals)); + globals.default_bitrate = AMRWB_DEFAULT_BITRATE; + + if ((xml = switch_xml_open_cfg(cf, &cfg, NULL))) { + if ((settings = switch_xml_child(cfg, "settings"))) { + for (param = switch_xml_child(settings, "param"); param; param = param->next) { + char *var = (char *) switch_xml_attr_soft(param, "name"); + char *val = (char *) switch_xml_attr_soft(param, "value"); + if (!strcasecmp(var, "default-bitrate")) { + globals.default_bitrate = (switch_byte_t) atoi(val); + } + } + } + } +#endif + + /* connect my internal structure to the blank pointer passed to me */ + *module_interface = switch_loadable_module_create_module_interface(pool, modname); + + SWITCH_ADD_CODEC(codec_interface, "AMR-WB"); + switch_core_codec_add_implementation(pool, codec_interface, + SWITCH_CODEC_TYPE_AUDIO, 100, "AMR-WB", "octet-align=0", 16000, 16000, 23850, + 20000, 320, 640, 0, 1, 1, + switch_amrwb_init, switch_amrwb_encode, switch_amrwb_decode, switch_amrwb_destroy); + /* indicate that the module should continue to be loaded */ + 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 expandtab: + */