static mpf_bridge_t* mpf_bridge_base_create(mpf_audio_stream_t *source, mpf_audio_stream_t *sink, const char *name, apr_pool_t *pool) { mpf_bridge_t *bridge; if(!source || !sink) { return NULL; } bridge = apr_palloc(pool,sizeof(mpf_bridge_t)); bridge->source = source; bridge->sink = sink; bridge->codec = NULL; mpf_object_init(&bridge->base,name); bridge->base.destroy = mpf_bridge_destroy; bridge->base.process = mpf_bridge_process; bridge->base.trace = mpf_bridge_trace; return bridge; }
MPF_DECLARE(mpf_object_t*) mpf_mixer_create( mpf_audio_stream_t **source_arr, apr_size_t source_count, mpf_audio_stream_t *sink, const mpf_codec_manager_t *codec_manager, const char *name, apr_pool_t *pool) { apr_size_t i; apr_size_t frame_size; mpf_codec_descriptor_t *descriptor; mpf_audio_stream_t *source; mpf_mixer_t *mixer; if(!source_arr || !source_count || !sink) { return NULL; } apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Create Mixer %s",name); mixer = apr_palloc(pool,sizeof(mpf_mixer_t)); mixer->source_arr = NULL; mixer->source_count = 0; mixer->sink = NULL; mpf_object_init(&mixer->base,name); mixer->base.process = mpf_mixer_process; mixer->base.destroy = mpf_mixer_destroy; mixer->base.trace = mpf_mixer_trace; if(mpf_audio_stream_tx_validate(sink,NULL,NULL,pool) == FALSE) { return NULL; } descriptor = sink->tx_descriptor; if(descriptor && mpf_codec_lpcm_descriptor_match(descriptor) == FALSE) { mpf_codec_t *codec = mpf_codec_manager_codec_get(codec_manager,descriptor,pool); if(codec) { /* set encoder after mixer */ mpf_audio_stream_t *encoder = mpf_encoder_create(sink,codec,pool); sink = encoder; } } mixer->sink = sink; mpf_audio_stream_tx_open(sink,NULL); for(i=0; i<source_count; i++) { source = source_arr[i]; if(!source) continue; if(mpf_audio_stream_rx_validate(source,NULL,NULL,pool) == FALSE) { continue; } descriptor = source->rx_descriptor; if(descriptor && mpf_codec_lpcm_descriptor_match(descriptor) == FALSE) { mpf_codec_t *codec = mpf_codec_manager_codec_get(codec_manager,descriptor,pool); if(codec) { /* set decoder before mixer */ mpf_audio_stream_t *decoder = mpf_decoder_create(source,codec,pool); source = decoder; } } source_arr[i] = source; mpf_audio_stream_rx_open(source,NULL); } mixer->source_arr = source_arr; mixer->source_count = source_count; descriptor = sink->tx_descriptor; frame_size = mpf_codec_linear_frame_size_calculate(descriptor->sampling_rate,descriptor->channel_count); mixer->frame.codec_frame.size = frame_size; mixer->frame.codec_frame.buffer = apr_palloc(pool,frame_size); mixer->mix_frame.codec_frame.size = frame_size; mixer->mix_frame.codec_frame.buffer = apr_palloc(pool,frame_size); return &mixer->base; }