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70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2016 Johannes Pohl
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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 3 of the License, or
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(at your option) any later version.
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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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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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#include <memory>
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#include "pcmEncoder.h"
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PcmEncoder::PcmEncoder(const std::string& codecOptions) : Encoder(codecOptions)
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{
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headerChunk_ = new msg::Header("pcm");
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}
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void PcmEncoder::encode(const msg::PcmChunk* chunk)
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{
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msg::PcmChunk* pcmChunk = new msg::PcmChunk(*chunk);
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listener_->onChunkEncoded(this, pcmChunk, pcmChunk->duration<chronos::msec>().count());
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}
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void PcmEncoder::initEncoder()
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{
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//TODO: Endianess
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headerChunk_->payloadSize = 44;
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headerChunk_->payload = (char*)malloc(headerChunk_->payloadSize);
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memcpy(headerChunk_->payload, "RIFF", 4);
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uint32_t int32 = 36;
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memcpy(headerChunk_->payload + 4, reinterpret_cast<const char *>(&int32), sizeof(uint32_t));
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memcpy(headerChunk_->payload + 8, "WAVEfmt ", 8);
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int32 = 16;
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memcpy(headerChunk_->payload + 16, reinterpret_cast<const char *>(&int32), sizeof(uint32_t));
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uint16_t int16 = 1;
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memcpy(headerChunk_->payload + 20, reinterpret_cast<const char *>(&int16), sizeof(uint16_t));
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int16 = sampleFormat_.channels;
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memcpy(headerChunk_->payload + 22, reinterpret_cast<const char *>(&int16), sizeof(uint16_t));
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int32 = sampleFormat_.rate;
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memcpy(headerChunk_->payload + 24, reinterpret_cast<const char *>(&int32), sizeof(uint32_t));
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int32 = sampleFormat_.rate * sampleFormat_.bits * sampleFormat_.channels / 8;
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memcpy(headerChunk_->payload + 28, reinterpret_cast<const char *>(&int32), sizeof(uint32_t));
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int16 = sampleFormat_.channels * ((sampleFormat_.bits + 7) / 8);
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memcpy(headerChunk_->payload + 32, reinterpret_cast<const char *>(&int16), sizeof(uint16_t));
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int16 = sampleFormat_.bits;
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memcpy(headerChunk_->payload + 34, reinterpret_cast<const char *>(&int16), sizeof(uint16_t));
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memcpy(headerChunk_->payload + 36, "data", 4);
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int32 = 0;
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memcpy(headerChunk_->payload + 40, reinterpret_cast<const char *>(&int32), sizeof(uint32_t));
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}
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std::string PcmEncoder::name() const
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{
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return "pcm";
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}
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