[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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