[Freeswitch-svn] [commit] r7671 - freeswitch/trunk/src

Freeswitch SVN anthm at freeswitch.org
Mon Feb 18 14:46:37 EST 2008


Author: anthm
Date: Mon Feb 18 14:46:37 2008
New Revision: 7671

Added:
   freeswitch/trunk/src/switch_pcm.c

Log:
move L16 and g711 into the core

Added: freeswitch/trunk/src/switch_pcm.c
==============================================================================
--- (empty file)
+++ freeswitch/trunk/src/switch_pcm.c	Mon Feb 18 14:46:37 2008
@@ -0,0 +1,307 @@
+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005/2006, Anthony Minessale II <anthmct at 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 at yahoo.com>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * 
+ * Anthony Minessale II <anthmct at yahoo.com>
+ *
+ *
+ * switch_pcm.c -- Raw and Encoded PCM 16 bit Signed Linear
+ *
+ */
+
+#include <switch.h>
+#include <g711.h>
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_l16_load);
+SWITCH_MODULE_DEFINITION(mod_l16, mod_l16_load, NULL, NULL);
+
+static switch_status_t switch_raw_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
+{
+	int encoding, decoding;
+
+	encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+	decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+	if (!(encoding || decoding)) {
+		return SWITCH_STATUS_FALSE;
+	} else {
+		return SWITCH_STATUS_SUCCESS;
+	}
+}
+
+static switch_status_t switch_raw_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)
+{
+	/* NOOP indicates that the audio in is already the same as the audio out, so no conversion was necessary. */
+	if (codec && other_codec && codec->implementation && other_codec->implementation && 
+		codec->implementation->actual_samples_per_second != other_codec->implementation->actual_samples_per_second) {
+		memcpy(encoded_data, decoded_data, decoded_data_len);
+		*encoded_data_len = decoded_data_len;
+		return SWITCH_STATUS_RESAMPLE;
+	}
+	return SWITCH_STATUS_NOOP;
+}
+
+static switch_status_t switch_raw_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)
+{
+	if (codec && other_codec && codec->implementation && other_codec->implementation &&
+		codec->implementation->actual_samples_per_second != other_codec->implementation->actual_samples_per_second) {
+		memcpy(decoded_data, encoded_data, encoded_data_len);
+		*decoded_data_len = encoded_data_len;
+		return SWITCH_STATUS_RESAMPLE;
+	}
+	return SWITCH_STATUS_NOOP;
+}
+
+static switch_status_t switch_raw_destroy(switch_codec_t *codec)
+{
+	return SWITCH_STATUS_SUCCESS;
+}
+
+
+static switch_status_t switch_g711u_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
+{
+	int encoding, decoding;
+
+	encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+	decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+	if (!(encoding || decoding)) {
+		return SWITCH_STATUS_FALSE;
+	} else {
+		return SWITCH_STATUS_SUCCESS;
+	}
+}
+
+static switch_status_t switch_g711u_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)
+{
+	short *dbuf;
+	unsigned char *ebuf;
+	uint32_t i;
+
+	dbuf = decoded_data;
+	ebuf = encoded_data;
+
+	for (i = 0; i < decoded_data_len / sizeof(short); i++) {
+		ebuf[i] = linear_to_ulaw(dbuf[i]);
+	}
+
+	*encoded_data_len = i;
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_g711u_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)
+{
+	short *dbuf;
+	unsigned char *ebuf;
+	uint32_t i;
+
+	dbuf = decoded_data;
+	ebuf = encoded_data;
+
+	if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
+		memset(dbuf, 0, codec->implementation->bytes_per_frame);
+		*decoded_data_len = codec->implementation->bytes_per_frame;
+	} else {
+		for (i = 0; i < encoded_data_len; i++) {
+			dbuf[i] = ulaw_to_linear(ebuf[i]);
+		}
+
+		*decoded_data_len = i * 2;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_g711u_destroy(switch_codec_t *codec)
+{
+	return SWITCH_STATUS_SUCCESS;
+}
+
+
+static switch_status_t switch_g711a_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
+{
+	int encoding, decoding;
+
+	encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+	decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+	if (!(encoding || decoding)) {
+		return SWITCH_STATUS_FALSE;
+	} else {
+		return SWITCH_STATUS_SUCCESS;
+	}
+}
+
+static switch_status_t switch_g711a_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)
+{
+	short *dbuf;
+	unsigned char *ebuf;
+	uint32_t i;
+
+	dbuf = decoded_data;
+	ebuf = encoded_data;
+
+	for (i = 0; i < decoded_data_len / sizeof(short); i++) {
+		ebuf[i] = linear_to_alaw(dbuf[i]);
+	}
+
+	*encoded_data_len = i;
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_g711a_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)
+{
+	short *dbuf;
+	unsigned char *ebuf;
+	uint32_t i;
+
+	dbuf = decoded_data;
+	ebuf = encoded_data;
+
+	if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
+		memset(dbuf, 0, codec->implementation->bytes_per_frame);
+		*decoded_data_len = codec->implementation->bytes_per_frame;
+	} else {
+		for (i = 0; i < encoded_data_len; i++) {
+			dbuf[i] = alaw_to_linear(ebuf[i]);
+		}
+
+		*decoded_data_len = i * 2;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_g711a_destroy(switch_codec_t *codec)
+{
+	return SWITCH_STATUS_SUCCESS;
+}
+
+
+static void mod_g711_load(switch_loadable_module_interface_t **module_interface, switch_memory_pool_t *pool)
+{
+	switch_codec_interface_t *codec_interface;
+    int mpf = 10000, spf = 80, bpf = 160, ebpf = 80, count;
+
+	SWITCH_ADD_CODEC(codec_interface, "G.711 ulaw");
+    for (count = 12; count > 0; count--) {
+        switch_core_codec_add_implementation(pool, codec_interface,
+                                             SWITCH_CODEC_TYPE_AUDIO, 0, "PCMU", NULL, 8000, 8000, 64000,
+                                             mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
+                                             switch_g711u_init, switch_g711u_encode, switch_g711u_decode, switch_g711u_destroy);
+    }
+    
+	SWITCH_ADD_CODEC(codec_interface, "G.711 alaw");
+    for (count = 12; count > 0; count--) {
+        switch_core_codec_add_implementation(pool, codec_interface,
+                                             SWITCH_CODEC_TYPE_AUDIO, 8, "PCMA", NULL, 8000, 8000, 64000,
+                                             mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
+                                             switch_g711a_init, switch_g711a_encode, switch_g711a_decode, switch_g711a_destroy);
+    }
+
+}
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_l16_load)
+{
+	switch_codec_interface_t *codec_interface;
+    int mpf = 10000, spf = 80, bpf = 160, ebpf = 160, bps = 128000, rate = 8000, counta, countb;
+    switch_payload_t ianacode[4] = { 0, 10, 117, 119 };
+
+	/* connect my internal structure to the blank pointer passed to me */
+	*module_interface = switch_loadable_module_create_module_interface(pool, "PCM");
+	SWITCH_ADD_CODEC(codec_interface, "RAW Signed Linear (16 bit)");
+    for (counta = 1; counta <= 3; counta++) {
+        for (countb = 12; countb > 0; countb--) {
+            switch_core_codec_add_implementation(pool, codec_interface,
+                                                 SWITCH_CODEC_TYPE_AUDIO, ianacode[counta], "L16", NULL, rate, rate, bps,
+                                                 mpf * countb, spf * countb, bpf * countb, ebpf * countb, 1, 1, 12,
+                                                 switch_raw_init, switch_raw_encode, switch_raw_decode, switch_raw_destroy);
+        }
+        rate = rate * 2;
+        bps = bps * 2;
+        spf = spf * 2;
+        bpf = bpf * 2;
+        ebpf = ebpf * 2;
+    }
+	/* these formats below are for file playing. */
+
+    switch_core_codec_add_implementation(pool, codec_interface,
+                                         SWITCH_CODEC_TYPE_AUDIO, 118, "L16", NULL, 22050, 22050, 352800,
+                                         20000, 441, 882, 882, 1, 1, 1,
+                                         switch_raw_init, switch_raw_encode, switch_raw_decode, switch_raw_destroy);
+
+    switch_core_codec_add_implementation(pool, codec_interface,
+                                         SWITCH_CODEC_TYPE_AUDIO, 118, "L16", NULL, 11025, 11025, 176400,
+                                         40000, 441, 882, 882, 1, 1, 1,
+                                         switch_raw_init, switch_raw_encode, switch_raw_decode, switch_raw_destroy);
+    
+	/* indicate that the module should continue to be loaded */
+
+	mod_g711_load(module_interface, pool);
+
+	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:
+ */



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