return SWITCH_STATUS_SUCCESS;
}
+/* codec interface */
+
+struct mp3_context {
+ lame_global_flags *gfp;
+};
+
+static switch_status_t switch_mp3_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
+{
+ struct mp3_context *context = NULL;
+ int encoding, decoding;
+
+ encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+ decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+ if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct mp3_context))))) {
+ return SWITCH_STATUS_FALSE;
+ } else {
+ const switch_codec_implementation_t *impl = codec->implementation;
+
+ if (codec->fmtp_in) {
+ codec->fmtp_out = switch_core_strdup(codec->memory_pool, codec->fmtp_in);
+ }
+
+ memset(context, 0, sizeof(struct mp3_context));
+
+ context->gfp = lame_init();
+
+ id3tag_init(context->gfp);
+ id3tag_v2_only(context->gfp);
+ id3tag_pad_v2(context->gfp);
+
+ lame_set_num_channels(context->gfp, 1);
+ lame_set_in_samplerate(context->gfp, impl->actual_samples_per_second);
+ lame_set_out_samplerate(context->gfp, impl->actual_samples_per_second);
+
+ if (impl->number_of_channels == 2) {
+ lame_set_mode(context->gfp, STEREO);
+ } else if (impl->number_of_channels == 1) {
+ lame_set_mode(context->gfp, MONO);
+ } else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "%d channels not supported\n", impl->number_of_channels);
+ }
+
+ lame_set_brate(context->gfp, 16 * (impl->actual_samples_per_second / 8000) * impl->number_of_channels);
+ lame_set_quality(context->gfp, 2);
+ lame_set_errorf(context->gfp, log_error);
+ lame_set_debugf(context->gfp, log_debug);
+ lame_set_msgf(context->gfp, log_msg);
+
+ lame_init_params(context->gfp);
+ lame_print_config(context->gfp);
+
+ if (encoding) {
+ lame_set_bWriteVbrTag(context->gfp, 0);
+ lame_mp3_tags_fid(context->gfp, NULL);
+ lame_set_disable_reservoir(context->gfp, 1);
+ }
+
+ if (decoding) {
+ }
+
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "MP3 framesize: %d\n", lame_get_framesize(context->gfp));
+
+ codec->private_info = context;
+
+ return SWITCH_STATUS_SUCCESS;
+ }
+}
+
+static switch_status_t switch_mp3_destroy(switch_codec_t *codec)
+{
+ struct mp3_context *context = codec->private_info;
+
+ if (context && context->gfp) lame_close(context->gfp);
+
+ codec->private_info = NULL;
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_mp3_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 mp3_context *context = codec->private_info;
+ int len;
+
+ if (!context) {
+ return SWITCH_STATUS_FALSE;
+ }
+
+ if (codec->implementation->number_of_channels == 2) {
+ len = lame_encode_buffer_interleaved(context->gfp, decoded_data, decoded_data_len / 4, encoded_data, *encoded_data_len);
+ } else {
+ len = lame_encode_buffer(context->gfp, decoded_data, NULL, decoded_data_len / 2, encoded_data, *encoded_data_len);
+ }
+
+ if (len < 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "encode error %d\n", len);
+ return SWITCH_STATUS_FALSE;
+ }
+
+ *encoded_data_len = len;
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_mp3_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)
+{
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "decode not implemented!\n");
+ return SWITCH_STATUS_FALSE;
+}
+
SWITCH_MODULE_LOAD_FUNCTION(mod_shout_load)
{
switch_api_interface_t *shout_api_interface;
switch_file_interface_t *file_interface;
+ switch_codec_interface_t *codec_interface;
+ int mpf = 10000, spf = 80, bpf = 160, count = 1;
+ int RATES[] = {8000, 11025, 16000, 22050, 32000, 44100, 48000};
+ int i;
supported_formats[0] = "shout";
supported_formats[1] = "mp3";
SWITCH_ADD_API(shout_api_interface, "telecast", "telecast", telecast_api_function, TELECAST_SYNTAX);
+ SWITCH_ADD_CODEC(codec_interface, "MP3");
+
+ for (count = 1; count <=4; count++) {
+ for (i = 0; i < sizeof(RATES) / sizeof(RATES[0]); i++) {
+ switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO,
+ 98, /* the IANA code number */
+ "MP3", /* the IANA code name */
+ NULL, /* default fmtp to send (can be overridden by the init function) */
+ RATES[i], /* samples transferred per second */
+ RATES[i], /* actual samples transferred per second */
+ 16 * RATES[i] / 8000, /* bits transferred per second */
+ mpf * count, /* number of microseconds per frame */
+ spf * count * RATES[i] / 8000, /* number of samples per frame */
+ bpf * count * RATES[i] / 8000, /* number of bytes per frame decompressed */
+ 0, /* number of bytes per frame compressed */
+ 1, /* number of channels represented */
+ 1, /* number of frames per network packet */
+ switch_mp3_init, switch_mp3_encode, switch_mp3_decode, switch_mp3_destroy);
+
+ switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO,
+ 98, /* the IANA code number */
+ "MP3", /* the IANA code name */
+ NULL, /* default fmtp to send (can be overridden by the init function) */
+ RATES[i], /* samples transferred per second */
+ RATES[i], /* actual samples transferred per second */
+ 16 * RATES[i] / 8000 * 2, /* bits transferred per second */
+ mpf * count, /* number of microseconds per frame */
+ spf * count * RATES[i] / 8000, /* number of samples per frame */
+ bpf * count * RATES[i] / 8000 * 2, /* number of bytes per frame decompressed */
+ 0, /* number of bytes per frame compressed */
+ 2, /* number of channels represented */
+ 1, /* number of frames per network packet */
+ switch_mp3_init, switch_mp3_encode, switch_mp3_decode, switch_mp3_destroy);
+ }
+ }
+
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
projects / thirdparty / freeswitch.git / commitdiff
