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clean up
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badaix
parent
1d22986619
commit
aba04a0675
10 changed files with 202 additions and 221 deletions
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@ -22,65 +22,87 @@
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using namespace std;
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#define READSIZE 16384
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static FLAC__int32 pcm[READSIZE/*samples*/ * 2/*channels*/];
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size_t encodedSamples = 0;
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static msg::PcmChunk* encodedChunk = NULL;
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FlacEncoder::FlacEncoder(const msg::SampleFormat& format) : Encoder(format), encoder(NULL)
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FlacEncoder::FlacEncoder(const msg::SampleFormat& format) : Encoder(format), encoder_(NULL), pcmBufferSize_(0), encodedSamples_(0)
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{
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encodedChunk = new msg::PcmChunk();
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headerChunk = new msg::Header("flac");
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encodedChunk_ = new msg::PcmChunk();
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headerChunk_ = new msg::Header("flac");
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pcmBuffer_ = (FLAC__int32*)malloc(pcmBufferSize_ * sizeof(FLAC__int32));
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initEncoder();
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}
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FlacEncoder::~FlacEncoder()
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{
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if (encoder != NULL)
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if (encoder_ != NULL)
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{
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FLAC__stream_encoder_finish(encoder);
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FLAC__metadata_object_delete(metadata[0]);
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FLAC__metadata_object_delete(metadata[1]);
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FLAC__stream_encoder_delete(encoder);
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FLAC__stream_encoder_finish(encoder_);
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FLAC__metadata_object_delete(metadata_[0]);
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FLAC__metadata_object_delete(metadata_[1]);
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FLAC__stream_encoder_delete(encoder_);
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}
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delete encodedChunk;
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}
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msg::Header* FlacEncoder::getHeaderChunk()
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{
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return headerChunk;
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delete encodedChunk_;
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free(pcmBuffer_);
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}
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double FlacEncoder::encode(msg::PcmChunk* chunk)
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{
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logD << "payload: " << chunk->payloadSize << "\tsamples: " << chunk->payloadSize/4 << "\n";
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int samples = chunk->payloadSize / 4;
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for(int i=0; i<samples*2/*channels*/; i++)
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{
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pcm[i] = (FLAC__int32)(((FLAC__int16)(FLAC__int8)chunk->payload[2*i+1] << 8) | (FLAC__int16)(0x00ff&chunk->payload[2*i]));
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}
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FLAC__stream_encoder_process_interleaved(encoder, pcm, samples);
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int samples = chunk->getSampleCount();
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int frames = chunk->getFrameCount();
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logO << "payload: " << chunk->payloadSize << "\tframes: " << frames << "\tsamples: " << samples << "\tduration: " << chunk->duration<chronos::msec>().count() << "\n";
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double res = encodedSamples / ((double)sampleFormat.rate / 1000.);
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if (encodedSamples > 0)
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if (pcmBufferSize_ < samples)
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{
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logD << "encoded: " << chunk->payloadSize << "\tsamples: " << encodedSamples << "\tres: " << res << "\n";
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encodedSamples = 0;
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chunk->payloadSize = encodedChunk->payloadSize;
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chunk->payload = (char*)realloc(chunk->payload, encodedChunk->payloadSize);
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memcpy(chunk->payload, encodedChunk->payload, encodedChunk->payloadSize);
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encodedChunk->payloadSize = 0;
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encodedChunk->payload = (char*)realloc(encodedChunk->payload, 0);
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pcmBufferSize_ = samples;
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pcmBuffer_ = (FLAC__int32*)realloc(pcmBuffer_, pcmBufferSize_ * sizeof(FLAC__int32));
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}
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for(int i=0; i<samples; i++)
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{
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pcmBuffer_[i] = (FLAC__int32)(((FLAC__int16)(FLAC__int8)chunk->payload[2*i+1] << 8) | (FLAC__int16)(0x00ff&chunk->payload[2*i]));
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}
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FLAC__stream_encoder_process_interleaved(encoder_, pcmBuffer_, frames);
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double resMs = encodedSamples_ / ((double)sampleFormat_.rate / 1000.);
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if (encodedSamples_ > 0)
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{
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logD << "encoded: " << chunk->payloadSize << "\tframes: " << encodedSamples_ << "\tres: " << resMs << "\n";
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encodedSamples_ = 0;
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chunk->payloadSize = encodedChunk_->payloadSize;
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chunk->payload = (char*)realloc(chunk->payload, encodedChunk_->payloadSize);
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memcpy(chunk->payload, encodedChunk_->payload, encodedChunk_->payloadSize);
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encodedChunk_->payloadSize = 0;
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encodedChunk_->payload = (char*)realloc(encodedChunk_->payload, 0);
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}
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return res;//chunk->duration<chronos::msec>().count();
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return resMs;//chunk->duration<chronos::msec>().count();
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}
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FLAC__StreamEncoderWriteStatus FlacEncoder::write_callback(const FLAC__StreamEncoder *encoder,
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const FLAC__byte buffer[],
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size_t bytes,
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unsigned samples,
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unsigned current_frame)
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{
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logD << "write_callback: " << bytes << ", " << samples << ", " << current_frame << "\n";
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if ((current_frame == 0) && (bytes > 0) && (samples == 0))
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{
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headerChunk_->payload = (char*)realloc(headerChunk_->payload, headerChunk_->payloadSize + bytes);
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memcpy(headerChunk_->payload + headerChunk_->payloadSize, buffer, bytes);
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headerChunk_->payloadSize += bytes;
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}
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else
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{
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encodedChunk_->payload = (char*)realloc(encodedChunk_->payload, encodedChunk_->payloadSize + bytes);
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memcpy(encodedChunk_->payload + encodedChunk_->payloadSize, buffer, bytes);
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encodedChunk_->payloadSize += bytes;
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encodedSamples_ += samples;
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}
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return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
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}
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@ -91,29 +113,11 @@ FLAC__StreamEncoderWriteStatus write_callback(const FLAC__StreamEncoder *encoder
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unsigned current_frame,
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void *client_data)
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{
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logD << "write_callback: " << bytes << ", " << samples << ", " << current_frame << "\n";
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FlacEncoder* flacEncoder = (FlacEncoder*)client_data;
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if ((current_frame == 0) && (bytes > 0) && (samples == 0))
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{
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msg::Header* headerChunk = flacEncoder->getHeaderChunk();
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headerChunk->payload = (char*)realloc(headerChunk->payload, headerChunk->payloadSize + bytes);
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memcpy(headerChunk->payload + headerChunk->payloadSize, buffer, bytes);
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headerChunk->payloadSize += bytes;
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}
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else
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{
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encodedChunk->payload = (char*)realloc(encodedChunk->payload, encodedChunk->payloadSize + bytes);
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memcpy(encodedChunk->payload + encodedChunk->payloadSize, buffer, bytes);
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encodedChunk->payloadSize += bytes;
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encodedSamples += samples;
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}
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return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
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return flacEncoder->write_callback(encoder, buffer, bytes, samples, current_frame);
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}
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void FlacEncoder::initEncoder()
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{
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FLAC__bool ok = true;
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@ -121,93 +125,53 @@ void FlacEncoder::initEncoder()
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FLAC__StreamMetadata_VorbisComment_Entry entry;
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// allocate the encoder
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if((encoder = FLAC__stream_encoder_new()) == NULL) {
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if ((encoder_ = FLAC__stream_encoder_new()) == NULL)
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{
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fprintf(stderr, "ERROR: allocating encoder\n");
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return;
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}
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ok &= FLAC__stream_encoder_set_verify(encoder, true);
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ok &= FLAC__stream_encoder_set_compression_level(encoder, 5);
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ok &= FLAC__stream_encoder_set_channels(encoder, sampleFormat.channels);
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ok &= FLAC__stream_encoder_set_bits_per_sample(encoder, sampleFormat.bits);
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ok &= FLAC__stream_encoder_set_sample_rate(encoder, sampleFormat.rate);
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ok &= FLAC__stream_encoder_set_verify(encoder_, true);
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// compression levels (0-8):
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// https://xiph.org/flac/api/group__flac__stream__encoder.html#gae49cf32f5256cb47eecd33779493ac85
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// latency:
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// 0-2: 1152 frames, ~26.1224ms
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// 3-8: 4096 frames, ~92.8798ms
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ok &= FLAC__stream_encoder_set_compression_level(encoder_, 2);
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ok &= FLAC__stream_encoder_set_channels(encoder_, sampleFormat_.channels);
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ok &= FLAC__stream_encoder_set_bits_per_sample(encoder_, sampleFormat_.bits);
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ok &= FLAC__stream_encoder_set_sample_rate(encoder_, sampleFormat_.rate);
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// now add some metadata; we'll add some tags and a padding block
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if(ok) {
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if(
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(metadata[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) == NULL ||
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(metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == NULL ||
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// there are many tag (vorbiscomment) functions but these are convenient for this particular use:
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!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ARTIST", "Some Artist") ||
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!FLAC__metadata_object_vorbiscomment_append_comment(metadata[0], entry, false) ||
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!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "YEAR", "1984") ||
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!FLAC__metadata_object_vorbiscomment_append_comment(metadata[0], entry, false)
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) {
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if (ok)
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{
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if (
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(metadata_[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) == NULL ||
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(metadata_[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == NULL ||
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// there are many tag (vorbiscomment) functions but these are convenient for this particular use:
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!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "TITLE", "SnapStream") ||
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!FLAC__metadata_object_vorbiscomment_append_comment(metadata_[0], entry, false) ||
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!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "VERSION", VERSION) ||
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!FLAC__metadata_object_vorbiscomment_append_comment(metadata_[0], entry, false)
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)
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{
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fprintf(stderr, "ERROR: out of memory or tag error\n");
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ok = false;
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}
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metadata[1]->length = 1234; // set the padding length
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ok = FLAC__stream_encoder_set_metadata(encoder, metadata, 2);
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metadata_[1]->length = 1234; // set the padding length
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ok = FLAC__stream_encoder_set_metadata(encoder_, metadata_, 2);
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}
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// initialize encoder
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if(ok) {
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init_status = FLAC__stream_encoder_init_stream(encoder, write_callback, NULL, NULL, NULL, this);
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if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
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if (ok)
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{
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init_status = FLAC__stream_encoder_init_stream(encoder_, ::write_callback, NULL, NULL, NULL, this);
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if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK)
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{
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fprintf(stderr, "ERROR: initializing encoder: %s\n", FLAC__StreamEncoderInitStatusString[init_status]);
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ok = false;
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}
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}
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/*
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// read blocks of samples from WAVE file and feed to encoder
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if(ok) {
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size_t left = (size_t)total_samples;
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while(ok && left) {
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size_t need = (left>READSIZE? (size_t)READSIZE : (size_t)left);
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if(fread(buffer, channels*(bps/8), need, fin) != need) {
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fprintf(stderr, "ERROR: reading from WAVE file\n");
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ok = false;
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}
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else {
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// convert the packed little-endian 16-bit PCM samples from WAVE into an interleaved FLAC__int32 buffer for libFLAC
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size_t i;
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for(i = 0; i < need*channels; i++) {
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// inefficient but simple and works on big- or little-endian machines
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pcm[i] = (FLAC__int32)(((FLAC__int16)(FLAC__int8)buffer[2*i+1] << 8) | (FLAC__int16)buffer[2*i]);
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}
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// feed samples to encoder
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ok = FLAC__stream_encoder_process_interleaved(encoder, pcm, need);
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}
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left -= need;
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}
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}
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ok &= FLAC__stream_encoder_finish(encoder);
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fprintf(stderr, "encoding: %s\n", ok? "succeeded" : "FAILED");
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fprintf(stderr, " state: %s\n", FLAC__StreamEncoderStateString[FLAC__stream_encoder_get_state(encoder)]);
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// now that encoding is finished, the metadata can be freed
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FLAC__metadata_object_delete(metadata[0]);
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FLAC__metadata_object_delete(metadata[1]);
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FLAC__stream_encoder_delete(encoder);
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fclose(fin);
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return 0;
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*/
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}
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/*
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void progress_callback(const FLAC__StreamEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data)
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{
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(void)encoder, (void)client_data;
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fprintf(stderr, "wrote %d bytes, %d, %u samples, %u/%u frames\n", bytes_written, samples_written, total_samples, frames_written, total_frames_estimate);
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}
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*/
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