static mpf_object_t* mpf_linear_bridge_create(mpf_audio_stream_t *source, mpf_audio_stream_t *sink, const mpf_codec_manager_t *codec_manager, const char *name, apr_pool_t *pool) { mpf_codec_descriptor_t *descriptor; apr_size_t frame_size; mpf_bridge_t *bridge; apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Create Linear Audio Bridge %s",name); bridge = mpf_bridge_base_create(source,sink,name,pool); if(!bridge) { return NULL; } descriptor = source->rx_descriptor; frame_size = mpf_codec_linear_frame_size_calculate(descriptor->sampling_rate,descriptor->channel_count); bridge->frame.codec_frame.size = frame_size; bridge->frame.codec_frame.buffer = apr_palloc(pool,frame_size); if(mpf_audio_stream_rx_open(source,NULL) == FALSE) { return NULL; } if(mpf_audio_stream_tx_open(sink,NULL) == FALSE) { mpf_audio_stream_rx_close(source); return NULL; } return &bridge->base; }
static mpf_object_t* mpf_null_bridge_create(mpf_audio_stream_t *source, mpf_audio_stream_t *sink, const mpf_codec_manager_t *codec_manager, const char *name, apr_pool_t *pool) { mpf_codec_t *codec; apr_size_t frame_size; mpf_bridge_t *bridge; apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Create Null Audio Bridge %s",name); bridge = mpf_bridge_base_create(source,sink,name,pool); if(!bridge) { return NULL; } bridge->base.process = mpf_null_bridge_process; codec = mpf_codec_manager_codec_get(codec_manager,source->rx_descriptor,pool); if(!codec) { return NULL; } frame_size = mpf_codec_frame_size_calculate(source->rx_descriptor,codec->attribs); bridge->codec = codec; bridge->frame.codec_frame.size = frame_size; bridge->frame.codec_frame.buffer = apr_palloc(pool,frame_size); if(mpf_audio_stream_rx_open(source,codec) == FALSE) { return NULL; } if(mpf_audio_stream_tx_open(sink,codec) == FALSE) { mpf_audio_stream_rx_close(source); return NULL; } return &bridge->base; }
static apt_bool_t mpf_encoder_open(mpf_audio_stream_t *stream) { mpf_encoder_t *encoder = stream->obj; return mpf_audio_stream_tx_open(encoder->sink); }
static apt_bool_t mpf_encoder_open(mpf_audio_stream_t *stream, mpf_codec_t *codec) { mpf_encoder_t *encoder = stream->obj; mpf_codec_open(encoder->codec); return mpf_audio_stream_tx_open(encoder->sink,encoder->codec); }
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; }