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-rw-r--r--src/decoder/DsfDecoderPlugin.cxx361
1 files changed, 0 insertions, 361 deletions
diff --git a/src/decoder/DsfDecoderPlugin.cxx b/src/decoder/DsfDecoderPlugin.cxx
deleted file mode 100644
index 9fbfe9cda..000000000
--- a/src/decoder/DsfDecoderPlugin.cxx
+++ /dev/null
@@ -1,361 +0,0 @@
-/*
- * Copyright (C) 2003-2013 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-/* \file
- *
- * This plugin decodes DSDIFF data (SACD) embedded in DSF files.
- *
- * The DSF code was created using the specification found here:
- * http://dsd-guide.com/sonys-dsf-file-format-spec
- *
- * All functions common to both DSD decoders have been moved to dsdlib
- */
-
-#include "config.h"
-#include "DsfDecoderPlugin.hxx"
-#include "DecoderAPI.hxx"
-#include "InputStream.hxx"
-#include "CheckAudioFormat.hxx"
-#include "util/bit_reverse.h"
-#include "util/Error.hxx"
-#include "system/ByteOrder.hxx"
-#include "DsdLib.hxx"
-#include "tag/TagHandler.hxx"
-#include "Log.hxx"
-
-#include <unistd.h>
-#include <stdio.h> /* for SEEK_SET, SEEK_CUR */
-
-struct DsfMetaData {
- unsigned sample_rate, channels;
- bool bitreverse;
- uint64_t chunk_size;
-#ifdef HAVE_ID3TAG
- InputStream::offset_type id3_offset;
- uint64_t id3_size;
-#endif
-};
-
-struct DsfHeader {
- /** DSF header id: "DSD " */
- DsdId id;
- /** DSD chunk size, including id = 28 */
- DsdUint64 size;
- /** total file size */
- DsdUint64 fsize;
- /** pointer to id3v2 metadata, should be at the end of the file */
- DsdUint64 pmeta;
-};
-
-/** DSF file fmt chunk */
-struct DsfFmtChunk {
- /** id: "fmt " */
- DsdId id;
- /** fmt chunk size, including id, normally 52 */
- DsdUint64 size;
- /** version of this format = 1 */
- uint32_t version;
- /** 0: DSD raw */
- uint32_t formatid;
- /** channel type, 1 = mono, 2 = stereo, 3 = 3 channels, etc */
- uint32_t channeltype;
- /** Channel number, 1 = mono, 2 = stereo, ... 6 = 6 channels */
- uint32_t channelnum;
- /** sample frequency: 2822400, 5644800 */
- uint32_t sample_freq;
- /** bits per sample 1 or 8 */
- uint32_t bitssample;
- /** Sample count per channel in bytes */
- DsdUint64 scnt;
- /** block size per channel = 4096 */
- uint32_t block_size;
- /** reserved, should be all zero */
- uint32_t reserved;
-};
-
-struct DsfDataChunk {
- DsdId id;
- /** "data" chunk size, includes header (id+size) */
- DsdUint64 size;
-};
-
-/**
- * Read and parse all needed metadata chunks for DSF files.
- */
-static bool
-dsf_read_metadata(Decoder *decoder, InputStream &is,
- DsfMetaData *metadata)
-{
- DsfHeader dsf_header;
- if (!decoder_read_full(decoder, is, &dsf_header, sizeof(dsf_header)) ||
- !dsf_header.id.Equals("DSD "))
- return false;
-
- const uint64_t chunk_size = dsf_header.size.Read();
- if (sizeof(dsf_header) != chunk_size)
- return false;
-
-#ifdef HAVE_ID3TAG
- const uint64_t metadata_offset = dsf_header.pmeta.Read();
-#endif
-
- /* read the 'fmt ' chunk of the DSF file */
- DsfFmtChunk dsf_fmt_chunk;
- if (!decoder_read_full(decoder, is,
- &dsf_fmt_chunk, sizeof(dsf_fmt_chunk)) ||
- !dsf_fmt_chunk.id.Equals("fmt "))
- return false;
-
- const uint64_t fmt_chunk_size = dsf_fmt_chunk.size.Read();
- if (fmt_chunk_size != sizeof(dsf_fmt_chunk))
- return false;
-
- uint32_t samplefreq = FromLE32(dsf_fmt_chunk.sample_freq);
-
- /* for now, only support version 1 of the standard, DSD raw stereo
- files with a sample freq of 2822400 or 5644800 Hz */
-
- if (dsf_fmt_chunk.version != 1 || dsf_fmt_chunk.formatid != 0
- || dsf_fmt_chunk.channeltype != 2
- || dsf_fmt_chunk.channelnum != 2
- || (samplefreq != 2822400 && samplefreq != 5644800))
- return false;
-
- uint32_t chblksize = FromLE32(dsf_fmt_chunk.block_size);
- /* according to the spec block size should always be 4096 */
- if (chblksize != 4096)
- return false;
-
- /* read the 'data' chunk of the DSF file */
- DsfDataChunk data_chunk;
- if (!decoder_read_full(decoder, is, &data_chunk, sizeof(data_chunk)) ||
- !data_chunk.id.Equals("data"))
- return false;
-
- /* data size of DSF files are padded to multiple of 4096,
- we use the actual data size as chunk size */
-
- uint64_t data_size = data_chunk.size.Read();
- if (data_size < sizeof(data_chunk))
- return false;
-
- data_size -= sizeof(data_chunk);
-
- /* data_size cannot be bigger or equal to total file size */
- const uint64_t size = (uint64_t)is.GetSize();
- if (data_size >= size)
- return false;
-
- /* use the sample count from the DSF header as the upper
- bound, because some DSF files contain junk at the end of
- the "data" chunk */
- const uint64_t samplecnt = dsf_fmt_chunk.scnt.Read();
- const uint64_t playable_size = samplecnt * 2 / 8;
- if (data_size > playable_size)
- data_size = playable_size;
-
- metadata->chunk_size = data_size;
- metadata->channels = (unsigned) dsf_fmt_chunk.channelnum;
- metadata->sample_rate = samplefreq;
-#ifdef HAVE_ID3TAG
- /* metada_offset cannot be bigger then or equal to total file size */
- if (metadata_offset >= size)
- metadata->id3_offset = 0;
- else
- metadata->id3_offset = (InputStream::offset_type)metadata_offset;
-#endif
- /* check bits per sample format, determine if bitreverse is needed */
- metadata->bitreverse = dsf_fmt_chunk.bitssample == 1;
- return true;
-}
-
-static void
-bit_reverse_buffer(uint8_t *p, uint8_t *end)
-{
- for (; p < end; ++p)
- *p = bit_reverse(*p);
-}
-
-/**
- * DSF data is build up of alternating 4096 blocks of DSD samples for left and
- * right. Convert the buffer holding 1 block of 4096 DSD left samples and 1
- * block of 4096 DSD right samples to 8k of samples in normal PCM left/right
- * order.
- */
-static void
-dsf_to_pcm_order(uint8_t *dest, uint8_t *scratch, size_t nrbytes)
-{
- for (unsigned i = 0, j = 0; i < (unsigned)nrbytes; i += 2) {
- scratch[i] = *(dest+j);
- j++;
- }
-
- for (unsigned i = 1, j = 0; i < (unsigned) nrbytes; i += 2) {
- scratch[i] = *(dest+4096+j);
- j++;
- }
-
- for (unsigned i = 0; i < (unsigned)nrbytes; i++) {
- *dest = scratch[i];
- dest++;
- }
-}
-
-/**
- * Decode one complete DSF 'data' chunk i.e. a complete song
- */
-static bool
-dsf_decode_chunk(Decoder &decoder, InputStream &is,
- unsigned channels,
- uint64_t chunk_size,
- bool bitreverse)
-{
- uint8_t buffer[8192];
-
- /* scratch buffer for DSF samples to convert to the needed
- normal left/right regime of samples */
- uint8_t dsf_scratch_buffer[8192];
-
- const size_t sample_size = sizeof(buffer[0]);
- const size_t frame_size = channels * sample_size;
- const unsigned buffer_frames = sizeof(buffer) / frame_size;
- const unsigned buffer_samples = buffer_frames * frame_size;
- const size_t buffer_size = buffer_samples * sample_size;
-
- while (chunk_size >= frame_size) {
- /* see how much aligned data from the remaining chunk
- fits into the local buffer */
- size_t now_size = buffer_size;
- if (chunk_size < (uint64_t)now_size) {
- unsigned now_frames =
- (unsigned)chunk_size / frame_size;
- now_size = now_frames * frame_size;
- }
-
- if (!decoder_read_full(&decoder, is, buffer, now_size))
- return false;
-
- const size_t nbytes = now_size;
- chunk_size -= nbytes;
-
- if (bitreverse)
- bit_reverse_buffer(buffer, buffer + nbytes);
-
- dsf_to_pcm_order(buffer, dsf_scratch_buffer, nbytes);
-
- const auto cmd = decoder_data(decoder, is, buffer, nbytes, 0);
- switch (cmd) {
- case DecoderCommand::NONE:
- break;
-
- case DecoderCommand::START:
- case DecoderCommand::STOP:
- return false;
-
- case DecoderCommand::SEEK:
-
- /* not implemented yet */
- decoder_seek_error(decoder);
- break;
- }
- }
- return dsdlib_skip(&decoder, is, chunk_size);
-}
-
-static void
-dsf_stream_decode(Decoder &decoder, InputStream &is)
-{
- /* check if it is a proper DSF file */
- DsfMetaData metadata;
- if (!dsf_read_metadata(&decoder, is, &metadata))
- return;
-
- Error error;
- AudioFormat audio_format;
- if (!audio_format_init_checked(audio_format, metadata.sample_rate / 8,
- SampleFormat::DSD,
- metadata.channels, error)) {
- LogError(error);
- return;
- }
- /* Calculate song time from DSD chunk size and sample frequency */
- uint64_t chunk_size = metadata.chunk_size;
- float songtime = ((chunk_size / metadata.channels) * 8) /
- (float) metadata.sample_rate;
-
- /* success: file was recognized */
- decoder_initialized(decoder, audio_format, false, songtime);
-
- if (!dsf_decode_chunk(decoder, is, metadata.channels,
- chunk_size,
- metadata.bitreverse))
- return;
-}
-
-static bool
-dsf_scan_stream(InputStream &is,
- gcc_unused const struct tag_handler *handler,
- gcc_unused void *handler_ctx)
-{
- /* check DSF metadata */
- DsfMetaData metadata;
- if (!dsf_read_metadata(nullptr, is, &metadata))
- return false;
-
- AudioFormat audio_format;
- if (!audio_format_init_checked(audio_format, metadata.sample_rate / 8,
- SampleFormat::DSD,
- metadata.channels, IgnoreError()))
- /* refuse to parse files which we cannot play anyway */
- return false;
-
- /* calculate song time and add as tag */
- unsigned songtime = ((metadata.chunk_size / metadata.channels) * 8) /
- metadata.sample_rate;
- tag_handler_invoke_duration(handler, handler_ctx, songtime);
-
-#ifdef HAVE_ID3TAG
- /* Add available tags from the ID3 tag */
- dsdlib_tag_id3(is, handler, handler_ctx, metadata.id3_offset);
-#endif
- return true;
-}
-
-static const char *const dsf_suffixes[] = {
- "dsf",
- nullptr
-};
-
-static const char *const dsf_mime_types[] = {
- "application/x-dsf",
- nullptr
-};
-
-const struct DecoderPlugin dsf_decoder_plugin = {
- "dsf",
- nullptr,
- nullptr,
- dsf_stream_decode,
- nullptr,
- nullptr,
- dsf_scan_stream,
- nullptr,
- dsf_suffixes,
- dsf_mime_types,
-};
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