add support for BroadVoice16 and BroadVoice32 codecs

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15464 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/codecs/mod_bv16/Makefile

+BASE=../../../..
+
+BV16=libbv16-0.1
+
+BV16_DIR=$(BASE)/libs/$(BV16)
+LOCAL_CFLAGS=-I$(BV16_DIR)/bv16 -I$(BV16_DIR)/bvcommon
+BV16_LA=$(BV16_DIR)/.libs/libbv16.la
+LOCAL_LIBADD=$(BV16_LA)
+include $(BASE)/build/modmake.rules
+
+$(BV16_DIR):
+	$(GETLIB) $(BV16).tar.gz
+
+$(BV16_DIR)/Makefile: $(BV16_DIR)
+	cd $(BV16_DIR) && CFLAGS=$(AM_CFLAGS) ./configure --disable-shared --with-pic
+
+$(BV16_LA): $(BV16_DIR)/Makefile
+	cd $(BV16_DIR) && $(MAKE)
+	$(TOUCH_TARGET)
+

src/mod/codecs/mod_bv16/mod_bv16.c

+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005-2009, 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):
+ * 
+ * Brian K. West <brian@freeswitch.org>
+ *
+ * mod_bv16.c -- BroadVoice32 (BV16) audio codec (http://www.broadcom.com/support/broadvoice/)
+ *
+ */
+
+#include "switch.h"
+#include "bv16.h"
+#include "bitpack.h"
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_bv16_load);
+SWITCH_MODULE_DEFINITION(mod_bv16, mod_bv16_load, NULL, NULL);
+
+#define FRAME_SIZE 40
+#define CODE_SIZE 5
+
+struct bv16_context {
+	struct BV16_Encoder_State cs;
+	struct BV16_Decoder_State ds;
+	struct BV16_Bit_Stream ebs;
+	struct BV16_Bit_Stream dbs;	
+};
+
+static switch_status_t switch_bv16_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
+{
+	struct bv16_context *context = NULL;
+	int encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+	int decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+	if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
+		return SWITCH_STATUS_FALSE;
+	} 
+
+	if (encoding) {
+		Reset_BV16_Encoder(&context->cs);
+	}
+	
+	if (decoding) {
+		Reset_BV16_Decoder(&context->ds);
+	}
+	
+	codec->private_info = context;
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_bv16_destroy(switch_codec_t *codec)
+{
+	codec->private_info = NULL;
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_bv16_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 bv16_context *context = codec->private_info;
+	int16_t *cur_frame = decoded_data;
+	uint16_t *target = encoded_data;
+	int i, frames = decoded_data_len / (FRAME_SIZE * 2);
+
+	if (!context) {
+		return SWITCH_STATUS_FALSE;
+	}
+	
+	*encoded_data_len = 0;
+	for (i = 0; i < frames; i++) {
+		BV16_Encode(&context->ebs, &context->cs, cur_frame);
+		BV16_BitPack(target, &context->ebs);
+		*encoded_data_len += CODE_SIZE * 2;
+		cur_frame += FRAME_SIZE;
+		target += CODE_SIZE;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_bv16_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 bv16_context *context = codec->private_info;
+	uint16_t *cur_frame = encoded_data;
+	int16_t *target = decoded_data;
+	int i, frames = encoded_data_len / (CODE_SIZE * 2);
+
+	if (!context) {
+		return SWITCH_STATUS_FALSE;
+	}
+
+	*decoded_data_len = 0;
+	for (i = 0; i < frames; i++) {
+		BV16_BitUnPack(cur_frame, &context->dbs);
+		BV16_Decode(&context->dbs, &context->ds, target);
+		cur_frame += CODE_SIZE;
+		target += FRAME_SIZE;
+		*decoded_data_len += FRAME_SIZE * 2;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_bv16_load)
+{
+	switch_codec_interface_t *codec_interface;
+
+	/* 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, "BroadVoice16 (BV16)"); 
+
+	switch_core_codec_add_implementation(pool,
+										 codec_interface,
+										 SWITCH_CODEC_TYPE_AUDIO,	/* enumeration defining the type of the codec */
+										 126,						/* the IANA code number */
+										 "BV16",					/* the IANA code name */
+										 NULL,						/* default fmtp to send (can be overridden by the init function) */
+										 8000,						/* samples transferred per second */
+										 8000,						/* actual samples transferred per second */
+										 16000,						/* bits transferred per second */
+										 20000,						/* number of microseconds per frame */
+										 160,						/* number of samples per frame */
+										 320,						/* number of bytes per frame decompressed */
+										 40,						/* number of bytes per frame compressed */
+										 1,							/* number of channels represented */
+										 1,							/* number of frames per network packet */
+										 switch_bv16_init,			/* function to initialize a codec handle using this implementation */
+										 switch_bv16_encode,		/* function to encode raw data into encoded data */
+										 switch_bv16_decode,		/* function to decode encoded data into raw data */
+										 switch_bv16_destroy);		/* deinitalize a codec handle using this implementation */
+
+	/* 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:
+ */

src/mod/codecs/mod_bv32/Makefile

+BASE=../../../..
+
+BV32=libbv32-0.1
+
+BV32_DIR=$(BASE)/libs/$(BV32)
+LOCAL_CFLAGS=-I$(BV32_DIR)/bv32 -I$(BV32_DIR)/bvcommon
+BV32_LA=$(BV32_DIR)/.libs/libbv32.la
+LOCAL_LIBADD=$(BV32_LA)
+include $(BASE)/build/modmake.rules
+
+$(BV32_DIR):
+	$(GETLIB) $(BV32).tar.gz
+
+$(BV32_DIR)/Makefile: $(BV32_DIR)
+	cd $(BV32_DIR) && CFLAGS=$(AM_CFLAGS) ./configure --disable-shared --with-pic
+
+$(BV32_LA): $(BV32_DIR)/Makefile
+	cd $(BV32_DIR) && $(MAKE)
+	$(TOUCH_TARGET)
+

src/mod/codecs/mod_bv32/mod_bv32.c

+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005-2009, 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):
+ * 
+ * Brian K. West <brian@freeswitch.org>
+ *
+ * mod_bv32.c -- BroadVoice32 (BV32) audio codec (http://www.broadcom.com/support/broadvoice/)
+ *
+ */
+
+#include "switch.h"
+#include "bv32.h"
+#include "bitpack.h"
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_bv32_load);
+SWITCH_MODULE_DEFINITION(mod_bv32, mod_bv32_load, NULL, NULL);
+
+#define FRAME_SIZE 80
+#define CODE_SIZE 10
+
+struct bv32_context {
+	struct BV32_Encoder_State cs;
+	struct BV32_Decoder_State ds;
+	struct BV32_Bit_Stream ebs;
+	struct BV32_Bit_Stream dbs;	
+};
+
+static switch_status_t switch_bv32_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
+{
+	struct bv32_context *context = NULL;
+	int encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+	int decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+	if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
+		return SWITCH_STATUS_FALSE;
+	} 
+
+	if (encoding) {
+		Reset_BV32_Coder(&context->cs);
+	}
+	
+	if (decoding) {
+		Reset_BV32_Decoder(&context->ds);
+	}
+	
+	codec->private_info = context;
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_bv32_destroy(switch_codec_t *codec)
+{
+	codec->private_info = NULL;
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_bv32_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 bv32_context *context = codec->private_info;
+	int16_t *cur_frame = decoded_data;
+	uint16_t *target = encoded_data;
+	int i, frames = decoded_data_len / (FRAME_SIZE * 2);
+
+	if (!context) {
+		return SWITCH_STATUS_FALSE;
+	}
+	
+	*encoded_data_len = 0;
+	for (i = 0; i < frames; i++) {
+		BV32_Encode(&context->ebs, &context->cs, cur_frame);
+		BV32_BitPack(target, &context->ebs);
+		*encoded_data_len += CODE_SIZE * 2;
+		cur_frame += FRAME_SIZE;
+		target += CODE_SIZE;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_bv32_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 bv32_context *context = codec->private_info;
+	uint16_t *cur_frame = encoded_data;
+	int16_t *target = decoded_data;
+	int i, frames = encoded_data_len / (CODE_SIZE * 2);
+
+	if (!context) {
+		return SWITCH_STATUS_FALSE;
+	}
+
+	*decoded_data_len = 0;
+	for (i = 0; i < frames; i++) {
+		BV32_BitUnPack(cur_frame, &context->dbs);
+		BV32_Decode(&context->dbs, &context->ds, target);
+		cur_frame += CODE_SIZE;
+		target += FRAME_SIZE;
+		*decoded_data_len += FRAME_SIZE * 2;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_bv32_load)
+{
+	switch_codec_interface_t *codec_interface;
+
+	/* 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, "BroadVoice32 (BV32)"); 
+
+	switch_core_codec_add_implementation(pool,
+										 codec_interface,
+										 SWITCH_CODEC_TYPE_AUDIO,	/* enumeration defining the type of the codec */
+										 127,						/* the IANA code number */
+										 "BV32",					/* the IANA code name */
+										 NULL,						/* default fmtp to send (can be overridden by the init function) */
+										 16000,						/* samples transferred per second */
+										 16000,						/* actual samples transferred per second */
+										 32000,						/* bits transferred per second */
+										 20000,						/* number of microseconds per frame */
+										 320,						/* number of samples per frame */
+										 640,						/* number of bytes per frame decompressed */
+										 80,						/* number of bytes per frame compressed */
+										 1,							/* number of channels represented */
+										 1,							/* number of frames per network packet */
+										 switch_bv32_init,			/* function to initialize a codec handle using this implementation */
+										 switch_bv32_encode,		/* function to encode raw data into encoded data */
+										 switch_bv32_decode,		/* function to decode encoded data into raw data */
+										 switch_bv32_destroy);		/* deinitalize a codec handle using this implementation */
+
+	/* 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:
+ */