*
* Contributor(s):
*
- * Anthony Minessale II <anthm@freeswitch.org>
- * Michael Jerris <mike@jerris.com>
+ * Brian K. West <brian@freeswitch.org>
*
* mod_ilbc.c -- ilbc Codec Module
*
*/
#include "switch.h"
-#include "iLBC_encode.h"
-#include "iLBC_decode.h"
-#include "iLBC_define.h"
+#include "ilbc.h"
SWITCH_MODULE_LOAD_FUNCTION(mod_ilbc_load);
SWITCH_MODULE_DEFINITION(mod_ilbc, mod_ilbc_load, NULL, NULL);
struct ilbc_context {
- iLBC_Enc_Inst_t encoder;
- iLBC_Dec_Inst_t decoder;
- uint8_t ms;
- uint16_t bytes;
- uint16_t dbytes;
+ ilbc_encode_state_t encoder_object;
+ ilbc_decode_state_t decoder_object;
};
static switch_status_t switch_ilbc_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
struct ilbc_context *context;
- int encoding, decoding;
- uint8_t ms = (uint8_t) (codec->implementation->microseconds_per_packet / 1000);
-
- if (ms != 20 && ms != 30) {
- switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "invalid speed! (I should never happen)\n");
+ int encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+ int decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+ int mode = codec->implementation->microseconds_per_packet / 1000;
+
+ if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
- }
-
- encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
- decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
-
- if (!(encoding || decoding)) {
- return SWITCH_STATUS_FALSE;
- } else {
- context = switch_core_alloc(codec->memory_pool, sizeof(*context));
- context->ms = ms;
- if (context->ms == 20) {
- context->bytes = NO_OF_BYTES_20MS;
- context->dbytes = 320;
- } else {
- context->bytes = NO_OF_BYTES_30MS;
- context->dbytes = 480;
- }
-
- if (encoding) {
- initEncode(&context->encoder, context->ms);
- }
- if (decoding) {
- initDecode(&context->decoder, context->ms, 1);
+ }
+
+ if (codec->fmtp_in) {
+ int x, argc;
+ char *argv[10];
+ 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;
+ switch_assert(data);
+ while (*data == ' ') {
+ data++;
+ }
+ if ((arg = strchr(data, '='))) {
+ *arg++ = '\0';
+ if (!strcasecmp(data, "mode")) {
+ mode = atoi(arg);
+ }
+ }
}
}
+
+ codec->fmtp_out = switch_core_sprintf(codec->memory_pool, "mode=%d", mode);
+
+ if (encoding) {
+ ilbc_encode_init(&context->encoder_object, mode);
+ }
- codec->fmtp_out = switch_core_strdup(codec->memory_pool, codec->implementation->fmtp);
-
+ if (decoding) {
+ ilbc_decode_init(&context->decoder_object, mode, 0);
+ }
+
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
if (!context) {
return SWITCH_STATUS_FALSE;
}
- if (decoded_data_len % context->dbytes == 0) {
- unsigned int new_len = 0;
- unsigned char *edp = encoded_data;
- short *ddp = decoded_data;
- int x;
- uint16_t y;
- int loops = (int) decoded_data_len / context->dbytes;
- float buf[240];
-
- for (x = 0; x < loops && new_len < *encoded_data_len; x++) {
- for (y = 0; y < context->dbytes / sizeof(short) && y < 240; y++) {
- buf[y] = ddp[y];
- }
- iLBC_encode(edp, buf, &context->encoder);
- edp += context->bytes;
- ddp += context->dbytes;
- new_len += context->bytes;
- }
- if (new_len <= *encoded_data_len) {
- *encoded_data_len = new_len;
- } else {
- switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "buffer overflow!!! %u >= %u\n", new_len, *encoded_data_len);
- return SWITCH_STATUS_FALSE;
- }
- }
+
+ *encoded_data_len = ilbc_encode(&context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
+
return SWITCH_STATUS_SUCCESS;
}
return SWITCH_STATUS_FALSE;
}
- if (encoded_data_len % context->bytes == 0) {
- int loops = (int) encoded_data_len / context->bytes;
- unsigned char *edp = encoded_data;
- short *ddp = decoded_data;
- int x;
- uint16_t y;
- unsigned int new_len = 0;
- float buf[240];
-
- for (x = 0; x < loops && new_len < *decoded_data_len; x++) {
- iLBC_decode(buf, edp, &context->decoder, 1);
- for (y = 0; y < context->dbytes / sizeof(short) && y < 240; y++) {
- ddp[y] = (short) buf[y];
- }
- ddp += context->dbytes / sizeof(short);
- edp += context->bytes;
- new_len += context->dbytes;
- }
- if (new_len <= *decoded_data_len) {
- *decoded_data_len = new_len;
- } else {
- switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "buffer overflow!!!\n");
- return SWITCH_STATUS_FALSE;
- }
- } else {
- switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "yo this frame is an odd size [%d]\n", encoded_data_len);
- return SWITCH_STATUS_FALSE;
- }
+ *decoded_data_len = (2 *ilbc_decode(&context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
+
return SWITCH_STATUS_SUCCESS;
}
SWITCH_ADD_CODEC(codec_interface, "iLBC");
- switch_core_codec_add_implementation(pool, codec_interface,
- SWITCH_CODEC_TYPE_AUDIO, 97, "iLBC", "mode=20", 8000, 8000, NO_OF_BYTES_20MS * 8 * 8000 / BLOCKL_20MS,
- 20000, 160, 320, NO_OF_BYTES_20MS, 1, 1,
- switch_ilbc_init, switch_ilbc_encode, switch_ilbc_decode, switch_ilbc_destroy);
- switch_core_codec_add_implementation(pool, codec_interface,
- SWITCH_CODEC_TYPE_AUDIO, 102, "iLBC", "mode=20", 8000, 8000, NO_OF_BYTES_20MS * 8 * 8000 / BLOCKL_20MS,
- 20000, 160, 320, NO_OF_BYTES_20MS, 1, 1,
- switch_ilbc_init, switch_ilbc_encode, switch_ilbc_decode, switch_ilbc_destroy);
- switch_core_codec_add_implementation(pool, codec_interface,
- SWITCH_CODEC_TYPE_AUDIO, 102, "iLBC102", "mode=20", 8000, 8000, NO_OF_BYTES_20MS * 8 * 8000 / BLOCKL_20MS,
- 20000, 160, 320, NO_OF_BYTES_20MS, 1, 1,
- switch_ilbc_init, switch_ilbc_encode, switch_ilbc_decode, switch_ilbc_destroy);
- switch_core_codec_add_implementation(pool, codec_interface,
- SWITCH_CODEC_TYPE_AUDIO, 102, "iLBC20ms", "mode=20", 8000, 8000, NO_OF_BYTES_20MS * 8 * 8000 / BLOCKL_20MS,
- 20000, 160, 320, NO_OF_BYTES_20MS, 1, 1,
- switch_ilbc_init, switch_ilbc_encode, switch_ilbc_decode, switch_ilbc_destroy);
- /* 30ms variants */
- switch_core_codec_add_implementation(pool, codec_interface,
- SWITCH_CODEC_TYPE_AUDIO, 98, "iLBC", "mode=30", 8000, 8000, NO_OF_BYTES_30MS * 8 * 8000 / BLOCKL_30MS,
- 30000, 240, 480, NO_OF_BYTES_30MS, 1, 1,
- switch_ilbc_init, switch_ilbc_encode, switch_ilbc_decode, switch_ilbc_destroy);
- switch_core_codec_add_implementation(pool, codec_interface,
- SWITCH_CODEC_TYPE_AUDIO, 102, "iLBC", "mode=30", 8000, 8000, NO_OF_BYTES_30MS * 8 * 8000 / BLOCKL_30MS,
- 30000, 240, 480, NO_OF_BYTES_30MS, 1, 1,
- switch_ilbc_init, switch_ilbc_encode, switch_ilbc_decode, switch_ilbc_destroy);
+ switch_core_codec_add_implementation(pool,
+ codec_interface,
+ SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
+ 98, /* the IANA code number */
+ "iLBC", /* the IANA code name */
+ "mode=20", /* default fmtp to send (can be overridden by the init function) */
+ 8000, /* samples transferred per second */
+ 8000, /* actual samples transferred per second */
+ 15200, /* bits transferred per second */
+ 20000, /* number of microseconds per frame */
+ ILBC_BLOCK_LEN_20MS, /* number of samples per frame */
+ ILBC_BLOCK_LEN_20MS * 2, /* number of bytes per frame decompressed */
+ ILBC_NO_OF_BYTES_20MS, /* number of bytes per frame compressed */
+ 1, /* number of channels represented */
+ 1, /* number of frames per network packet */
+ switch_ilbc_init, /* function to initialize a codec handle using this implementation */
+ switch_ilbc_encode, /* function to encode raw data into encoded data */
+ switch_ilbc_decode, /* function to decode encoded data into raw data */
+ switch_ilbc_destroy); /* deinitalize a codec handle using this implementation */
+
+ switch_core_codec_add_implementation(pool,
+ codec_interface,
+ SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
+ 97, /* the IANA code number */
+ "iLBC", /* the IANA code name */
+ "mode=30", /* default fmtp to send (can be overridden by the init function) */
+ 8000, /* samples transferred per second */
+ 8000, /* actual samples transferred per second */
+ 13300, /* bits transferred per second */
+ 30000, /* number of microseconds per frame */
+ ILBC_BLOCK_LEN_30MS, /* number of samples per frame */
+ ILBC_BLOCK_LEN_30MS * 2, /* number of bytes per frame decompressed */
+ ILBC_NO_OF_BYTES_30MS, /* number of bytes per frame compressed */
+ 1, /* number of channels represented */
+ 1, /* number of frames per network packet */
+ switch_ilbc_init, /* function to initialize a codec handle using this implementation */
+ switch_ilbc_encode, /* function to encode raw data into encoded data */
+ switch_ilbc_decode, /* function to decode encoded data into raw data */
+ switch_ilbc_destroy); /* deinitalize a codec handle using this implementation */
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
projects / thirdparty / freeswitch.git / commitdiff
