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/* |
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* Copyright (C) 2005-2008 by Pieter Palmers |
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* |
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* This file is part of FFADO |
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* FFADO = Free Firewire (pro-)audio drivers for linux |
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* |
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* FFADO is based upon FreeBoB. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 2 of the License, or |
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* (at your option) version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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#include "config.h" |
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|
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#include "AmdtpReceiveStreamProcessor.h" |
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#include "AmdtpPort.h" |
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#include "../StreamProcessorManager.h" |
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#include "devicemanager.h" |
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#include "libieee1394/ieee1394service.h" |
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#include "libieee1394/IsoHandlerManager.h" |
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#include "libieee1394/cycletimer.h" |
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#include <netinet/in.h> |
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#include <assert.h> |
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namespace Streaming { |
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|
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/* --------------------- RECEIVE ----------------------- */ |
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|
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AmdtpReceiveStreamProcessor::AmdtpReceiveStreamProcessor(FFADODevice &parent, int dimension) |
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: StreamProcessor(parent, ePT_Receive) |
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, m_dimension( dimension ) |
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, m_nb_audio_ports( 0 ) |
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, m_nb_midi_ports( 0 ) |
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|
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{} |
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|
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unsigned int |
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AmdtpReceiveStreamProcessor::getSytInterval() { |
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switch (m_StreamProcessorManager.getNominalRate()) { |
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case 32000: |
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case 44100: |
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case 48000: |
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return 8; |
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case 88200: |
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case 96000: |
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return 16; |
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case 176400: |
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case 192000: |
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return 32; |
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default: |
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debugError("Unsupported rate: %d\n", m_StreamProcessorManager.getNominalRate()); |
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return 0; |
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} |
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} |
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|
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bool AmdtpReceiveStreamProcessor::prepareChild() { |
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debugOutput( DEBUG_LEVEL_VERBOSE, "Preparing (%p)...\n", this); |
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m_syt_interval = getSytInterval(); |
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|
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if (!initPortCache()) { |
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debugError("Could not init port cache\n"); |
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return false; |
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} |
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|
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return true; |
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} |
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|
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|
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/** |
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* Processes packet header to extract timestamps and so on |
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* @param data |
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* @param length |
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* @param channel |
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* @param tag |
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* @param sy |
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* @param cycle |
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* @param dropped |
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* @return |
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*/ |
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enum StreamProcessor::eChildReturnValue |
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AmdtpReceiveStreamProcessor::processPacketHeader(unsigned char *data, unsigned int length, |
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unsigned char channel, unsigned char tag, unsigned char sy, |
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unsigned int cycle, unsigned int dropped) |
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{ |
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#ifdef DEBUG |
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static uint32_t now_prev=0; |
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static uint64_t now_prev_ticks=0; |
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#endif |
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|
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struct iec61883_packet *packet = (struct iec61883_packet *) data; |
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assert(packet); |
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bool ok = (packet->syt != 0xFFFF) && |
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(packet->fdf != 0xFF) && |
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(packet->fmt == 0x10) && |
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(packet->dbs > 0) && |
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(length >= 2*sizeof(quadlet_t)); |
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if(ok) { |
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uint32_t now = m_1394service.getCycleTimer(); |
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|
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#ifdef DEBUG |
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uint64_t now_ticks = CYCLE_TIMER_TO_TICKS(now); |
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if (diffTicks(now_ticks, now_prev_ticks) < 0) { |
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debugWarning("non-monotonic CTR on cycle %04u: %llu -> %llu\n", cycle, now_prev_ticks, now_ticks); |
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debugWarning(" : %08X -> %08X\n", now_prev, now); |
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debugOutput ( DEBUG_LEVEL_VERBOSE, |
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" current: %011llu (%03us %04ucy %04uticks)\n", |
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now, |
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(unsigned int)TICKS_TO_SECS( now ), |
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(unsigned int)TICKS_TO_CYCLES( now ), |
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(unsigned int)TICKS_TO_OFFSET( now ) ); |
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debugOutput ( DEBUG_LEVEL_VERBOSE, |
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" prev : %011llu (%03us %04ucy %04uticks)\n", |
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now_prev, |
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(unsigned int)TICKS_TO_SECS( now_prev ), |
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(unsigned int)TICKS_TO_CYCLES( now_prev ), |
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(unsigned int)TICKS_TO_OFFSET( now_prev ) ); |
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} |
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now_prev = now; |
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now_prev_ticks=now_ticks; |
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#endif |
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|
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//=> convert the SYT to a full timestamp in ticks |
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m_last_timestamp = sytRecvToFullTicks((uint32_t)ntohs(packet->syt), |
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cycle, now); |
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} |
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return (ok ? eCRV_OK : eCRV_Invalid ); |
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} |
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|
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/** |
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* extract the data from the packet |
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* @pre the IEC61883 packet is valid according to isValidPacket |
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* @param data |
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* @param length |
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* @param channel |
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* @param tag |
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* @param sy |
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* @param cycle |
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* @param dropped |
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* @return |
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*/ |
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enum StreamProcessor::eChildReturnValue |
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AmdtpReceiveStreamProcessor::processPacketData(unsigned char *data, unsigned int length, |
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unsigned char channel, unsigned char tag, unsigned char sy, |
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unsigned int cycle, unsigned int dropped_cycles) { |
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struct iec61883_packet *packet = (struct iec61883_packet *) data; |
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assert(packet); |
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unsigned int nevents=((length / sizeof (quadlet_t)) - 2)/packet->dbs; |
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// we have to keep in mind that there are also |
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// some packets buffered by the ISO layer, |
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// at most x=m_handler->getWakeupInterval() |
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// these contain at most x*syt_interval |
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// frames, meaning that we might receive |
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// this packet x*syt_interval*ticks_per_frame |
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// later than expected (the real receive time) |
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#ifdef DEBUG |
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if(isRunning()) { |
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debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, |
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"STMP: %lluticks | syt_interval=%d, tpf=%f\n", |
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m_last_timestamp, m_syt_interval, getTicksPerFrame()); |
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} |
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#endif |
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|
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if(m_data_buffer->writeFrames(nevents, (char *)(data+8), m_last_timestamp)) { |
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return eCRV_OK; |
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} else { |
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return eCRV_XRun; |
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} |
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} |
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|
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/*********************************************** |
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* Encoding/Decoding API * |
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***********************************************/ |
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/** |
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* @brief write received events to the stream ringbuffers. |
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*/ |
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bool AmdtpReceiveStreamProcessor::processReadBlock(char *data, |
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unsigned int nevents, unsigned int offset) |
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{ |
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debugOutputExtreme( DEBUG_LEVEL_VERY_VERBOSE, |
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"(%p)->processReadBlock(%u, %u)\n", |
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this,nevents,offset); |
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|
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// update the variable parts of the cache |
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updatePortCache(); |
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|
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// decode audio data |
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switch(m_StreamProcessorManager.getAudioDataType()) { |
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case StreamProcessorManager::eADT_Int24: |
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decodeAudioPortsInt24((quadlet_t *)data, offset, nevents); |
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break; |
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case StreamProcessorManager::eADT_Float: |
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decodeAudioPortsFloat((quadlet_t *)data, offset, nevents); |
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break; |
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} |
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|
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// do midi ports |
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decodeMidiPorts((quadlet_t *)data, offset, nevents); |
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return true; |
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} |
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|
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//#ifdef __SSE2__ |
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#if 0 // SSE code is not ready yet |
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#include <emmintrin.h> |
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#warning SSE2 build |
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|
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/** |
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* @brief demux events to all audio ports (int24) |
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* @param data |
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* @param offset |
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* @param nevents |
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*/ |
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void |
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AmdtpReceiveStreamProcessor::decodeAudioPortsInt24(quadlet_t *data, |
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unsigned int offset, |
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unsigned int nevents) |
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{ |
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unsigned int j; |
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quadlet_t *target_event; |
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unsigned int i; |
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|
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for (i = 0; i < m_nb_audio_ports; i++) { |
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struct _MBLA_port_cache &p = m_audio_ports.at(i); |
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target_event = (quadlet_t *)(data + i); |
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assert(nevents + offset <= p.buffer_size ); |
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|
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if(p.buffer && p.enabled) { |
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quadlet_t *buffer = (quadlet_t *)(p.buffer); |
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buffer += offset; |
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|
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for(j = 0; j < nevents; j += 1) { |
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*(buffer)=(ntohl((*target_event) ) & 0x00FFFFFF); |
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buffer++; |
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target_event+=m_dimension; |
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} |
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} |
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} |
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} |
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|
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/** |
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* @brief demux events to all audio ports (float) |
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* @param data |
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* @param offset |
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* @param nevents |
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*/ |
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void |
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AmdtpReceiveStreamProcessor::decodeAudioPortsFloat(quadlet_t *data, |
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unsigned int offset, |
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unsigned int nevents) |
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{ |
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unsigned int j; |
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quadlet_t *target_event; |
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unsigned int i; |
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const float multiplier = 1.0f / (float)(0x7FFFFF); |
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|
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for (i = 0; i < m_nb_audio_ports; i++) { |
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struct _MBLA_port_cache &p = m_audio_ports.at(i); |
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target_event = (quadlet_t *)(data + i); |
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assert(nevents + offset <= p.buffer_size ); |
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|
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if(p.buffer && p.enabled) { |
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float *buffer = (float *)(p.buffer); |
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buffer += offset; |
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|
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for(j = 0; j < nevents; j += 1) { |
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unsigned int v = ntohl(*target_event) & 0x00FFFFFF; |
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// sign-extend highest bit of 24-bit int |
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int tmp = (int)(v << 8) / 256; |
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*buffer = tmp * multiplier; |
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buffer++; |
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target_event+=m_dimension; |
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} |
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} |
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} |
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} |
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|
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#else |
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/** |
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* @brief demux events to all audio ports (int24) |
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* @param data |
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* @param offset |
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* @param nevents |
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*/ |
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void |
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AmdtpReceiveStreamProcessor::decodeAudioPortsInt24(quadlet_t *data, |
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unsigned int offset, |
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unsigned int nevents) |
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{ |
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unsigned int j; |
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quadlet_t *target_event; |
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unsigned int i; |
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|
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for (i = 0; i < m_nb_audio_ports; i++) { |
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struct _MBLA_port_cache &p = m_audio_ports.at(i); |
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target_event = (quadlet_t *)(data + i); |
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assert(nevents + offset <= p.buffer_size ); |
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|
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if(p.buffer && p.enabled) { |
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quadlet_t *buffer = (quadlet_t *)(p.buffer); |
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buffer += offset; |
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|
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for(j = 0; j < nevents; j += 1) { |
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*(buffer)=(ntohl((*target_event) ) & 0x00FFFFFF); |
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buffer++; |
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target_event+=m_dimension; |
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} |
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} |
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} |
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} |
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|
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/** |
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* @brief demux events to all audio ports (float) |
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* @param data |
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* @param offset |
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* @param nevents |
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*/ |
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void |
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AmdtpReceiveStreamProcessor::decodeAudioPortsFloat(quadlet_t *data, |
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unsigned int offset, |
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unsigned int nevents) |
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{ |
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unsigned int j; |
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quadlet_t *target_event; |
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unsigned int i; |
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const float multiplier = 1.0f / (float)(0x7FFFFF); |
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|
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for (i = 0; i < m_nb_audio_ports; i++) { |
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struct _MBLA_port_cache &p = m_audio_ports.at(i); |
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target_event = (quadlet_t *)(data + i); |
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assert(nevents + offset <= p.buffer_size ); |
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|
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if(p.buffer && p.enabled) { |
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float *buffer = (float *)(p.buffer); |
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buffer += offset; |
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|
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for(j = 0; j < nevents; j += 1) { |
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unsigned int v = ntohl(*target_event) & 0x00FFFFFF; |
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// sign-extend highest bit of 24-bit int |
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int tmp = (int)(v << 8) / 256; |
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*buffer = tmp * multiplier; |
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buffer++; |
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target_event+=m_dimension; |
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} |
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} |
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} |
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} |
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|
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#endif |
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|
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/** |
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* @brief decode all midi ports in the cache from events |
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* @param data |
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* @param offset |
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* @param nevents |
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*/ |
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void |
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AmdtpReceiveStreamProcessor::decodeMidiPorts(quadlet_t *data, |
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unsigned int offset, |
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unsigned int nevents) |
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{ |
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quadlet_t *target_event; |
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quadlet_t sample_int; |
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unsigned int i,j; |
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|
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for (i = 0; i < m_nb_midi_ports; i++) { |
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struct _MIDI_port_cache &p = m_midi_ports.at(i); |
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if (p.buffer && p.enabled) { |
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uint32_t *buffer = (quadlet_t *)(p.buffer); |
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buffer += offset; |
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|
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for (j = p.location;j < nevents; j += 8) { |
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target_event = (quadlet_t *) (data + ((j * m_dimension) + p.position)); |
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sample_int=ntohl(*target_event); |
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// FIXME: this assumes that 2X and 3X speed isn't used, |
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// because only the 1X slot is put into the ringbuffer |
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if(IEC61883_AM824_GET_LABEL(sample_int) != IEC61883_AM824_LABEL_MIDI_NO_DATA) { |
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sample_int=(sample_int >> 16) & 0x000000FF; |
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sample_int |= 0x01000000; // flag that there is a midi event present |
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*buffer = sample_int; |
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debugOutput(DEBUG_LEVEL_VERBOSE, "Received midi byte %08X on port %p index %d\n", sample_int, p, j-p.location); |
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395 |
} else { |
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// make sure no event is received |
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*buffer = 0; |
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} |
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399 |
buffer+=8; |
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400 |
} |
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401 |
} |
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402 |
} |
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403 |
} |
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404 |
|
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bool |
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406 |
AmdtpReceiveStreamProcessor::initPortCache() { |
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407 |
// make use of the fact that audio ports are the first ports in |
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408 |
// the cluster as per AMDTP. so we can sort the ports by position |
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409 |
// and have very efficient lookups: |
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// m_float_ports.at(i).buffer -> audio stream i buffer |
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// for midi ports we simply cache all port info since they are (usually) not |
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412 |
// that numerous |
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413 |
m_nb_audio_ports = 0; |
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414 |
m_audio_ports.clear(); |
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415 |
|
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416 |
m_nb_midi_ports = 0; |
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417 |
m_midi_ports.clear(); |
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418 |
|
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for(PortVectorIterator it = m_Ports.begin(); |
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420 |
it != m_Ports.end(); |
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421 |
++it ) |
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{ |
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423 |
AmdtpPortInfo *pinfo=dynamic_cast<AmdtpPortInfo *>(*it); |
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assert(pinfo); // this should not fail!! |
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425 |
|
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426 |
switch( pinfo->getFormat() ) |
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427 |
{ |
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428 |
case AmdtpPortInfo::E_MBLA: |
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429 |
m_nb_audio_ports++; |
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430 |
break; |
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431 |
case AmdtpPortInfo::E_SPDIF: // still unimplemented |
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432 |
break; |
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433 |
case AmdtpPortInfo::E_Midi: |
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434 |
m_nb_midi_ports++; |
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435 |
break; |
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436 |
default: // ignore |
---|
437 |
break; |
---|
438 |
} |
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439 |
} |
---|
440 |
|
---|
441 |
unsigned int idx; |
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442 |
for (idx = 0; idx < m_nb_audio_ports; idx++) { |
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443 |
for(PortVectorIterator it = m_Ports.begin(); |
---|
444 |
it != m_Ports.end(); |
---|
445 |
++it ) |
---|
446 |
{ |
---|
447 |
AmdtpPortInfo *pinfo=dynamic_cast<AmdtpPortInfo *>(*it); |
---|
448 |
debugOutput(DEBUG_LEVEL_VERY_VERBOSE, |
---|
449 |
"idx %u: looking at port %s at position %u\n", |
---|
450 |
idx, (*it)->getName().c_str(), pinfo->getPosition()); |
---|
451 |
if(pinfo->getPosition() == idx) { |
---|
452 |
struct _MBLA_port_cache p; |
---|
453 |
p.port = dynamic_cast<AmdtpAudioPort *>(*it); |
---|
454 |
if(p.port == NULL) { |
---|
455 |
debugError("Port is not an AmdtpAudioPort!\n"); |
---|
456 |
return false; |
---|
457 |
} |
---|
458 |
p.buffer = NULL; // to be filled by updatePortCache |
---|
459 |
#ifdef DEBUG |
---|
460 |
p.buffer_size = (*it)->getBufferSize(); |
---|
461 |
#endif |
---|
462 |
|
---|
463 |
m_audio_ports.push_back(p); |
---|
464 |
debugOutput(DEBUG_LEVEL_VERBOSE, |
---|
465 |
"Cached port %s at position %u\n", |
---|
466 |
p.port->getName().c_str(), idx); |
---|
467 |
goto next_index; |
---|
468 |
} |
---|
469 |
} |
---|
470 |
debugError("No MBLA port found for position %d\n", idx); |
---|
471 |
return false; |
---|
472 |
next_index: |
---|
473 |
continue; |
---|
474 |
} |
---|
475 |
|
---|
476 |
for(PortVectorIterator it = m_Ports.begin(); |
---|
477 |
it != m_Ports.end(); |
---|
478 |
++it ) |
---|
479 |
{ |
---|
480 |
AmdtpPortInfo *pinfo=dynamic_cast<AmdtpPortInfo *>(*it); |
---|
481 |
debugOutput(DEBUG_LEVEL_VERY_VERBOSE, |
---|
482 |
"idx %u: looking at port %s at position %u, location %u\n", |
---|
483 |
idx, (*it)->getName().c_str(), pinfo->getPosition(), pinfo->getLocation()); |
---|
484 |
if ((*it)->getPortType() == Port::E_Midi) { |
---|
485 |
struct _MIDI_port_cache p; |
---|
486 |
p.port = dynamic_cast<AmdtpMidiPort *>(*it); |
---|
487 |
if(p.port == NULL) { |
---|
488 |
debugError("Port is not an AmdtpMidiPort!\n"); |
---|
489 |
return false; |
---|
490 |
} |
---|
491 |
p.position = pinfo->getPosition(); |
---|
492 |
p.location = pinfo->getLocation(); |
---|
493 |
p.buffer = NULL; // to be filled by updatePortCache |
---|
494 |
#ifdef DEBUG |
---|
495 |
p.buffer_size = (*it)->getBufferSize(); |
---|
496 |
#endif |
---|
497 |
|
---|
498 |
m_midi_ports.push_back(p); |
---|
499 |
debugOutput(DEBUG_LEVEL_VERBOSE, |
---|
500 |
"Cached port %s at position %u, location %u\n", |
---|
501 |
p.port->getName().c_str(), p.position, p.location); |
---|
502 |
} |
---|
503 |
} |
---|
504 |
|
---|
505 |
return true; |
---|
506 |
} |
---|
507 |
|
---|
508 |
void |
---|
509 |
AmdtpReceiveStreamProcessor::updatePortCache() { |
---|
510 |
unsigned int idx; |
---|
511 |
for (idx = 0; idx < m_nb_audio_ports; idx++) { |
---|
512 |
struct _MBLA_port_cache& p = m_audio_ports.at(idx); |
---|
513 |
AmdtpAudioPort *port = p.port; |
---|
514 |
p.buffer = port->getBufferAddress(); |
---|
515 |
p.enabled = !port->isDisabled(); |
---|
516 |
} |
---|
517 |
for (idx = 0; idx < m_nb_midi_ports; idx++) { |
---|
518 |
struct _MIDI_port_cache& p = m_midi_ports.at(idx); |
---|
519 |
AmdtpMidiPort *port = p.port; |
---|
520 |
p.buffer = port->getBufferAddress(); |
---|
521 |
p.enabled = !port->isDisabled(); |
---|
522 |
} |
---|
523 |
} |
---|
524 |
|
---|
525 |
} // end of namespace Streaming |
---|