decoder/{dsf,dsdiff}: convert to C++

1 files changed, 0 insertions, 536 deletions

diff --git a/src/decoder/dsdiff_decoder_plugin.c b/src/decoder/dsdiff_decoder_plugin.c
deleted file mode 100644
index 44d12d899..000000000
--- a/src/decoder/dsdiff_decoder_plugin.c
+++ /dev/null
@@ -1,536 +0,0 @@
-/*
- * Copyright (C) 2003-2012 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 DFF files.
- * The DFF code was modeled after the specification found here:
- * http://www.sonicstudio.com/pdf/dsd/DSDIFF_1.5_Spec.pdf
- *
- * All functions common to both DSD decoders have been moved to dsdlib
- */
-
-#include "config.h"
-#include "dsdiff_decoder_plugin.h"
-#include "decoder_api.h"
-#include "audio_check.h"
-#include "util/bit_reverse.h"
-#include "tag_handler.h"
-#include "dsdlib.h"
-#include "tag_handler.h"
-
-#include <unistd.h>
-#include <stdio.h> /* for SEEK_SET, SEEK_CUR */
-
-#undef G_LOG_DOMAIN
-#define G_LOG_DOMAIN "dsdiff"
-
-struct dsdiff_header {
-	struct dsdlib_id id;
-	uint32_t size_high, size_low;
-	struct dsdlib_id format;
-};
-
-struct dsdiff_chunk_header {
-	struct dsdlib_id id;
-	uint32_t size_high, size_low;
-};
-
-/** struct for DSDIFF native Artist and Title tags */
-struct dsdiff_native_tag {
-	uint32_t size;
-};
-
-struct dsdiff_metadata {
-	unsigned sample_rate, channels;
-	bool bitreverse;
-	uint64_t chunk_size;
-#ifdef HAVE_ID3TAG
-	goffset id3_offset;
-	uint64_t id3_size;
-#endif
-	/** offset for artist tag */
-	goffset diar_offset;
-	/** offset for title tag */
-	goffset diti_offset;
-};
-
-static bool lsbitfirst;
-
-static bool
-dsdiff_init(const struct config_param *param)
-{
-	lsbitfirst = config_get_block_bool(param, "lsbitfirst", false);
-	return true;
-}
-
-/**
- * Read the "size" attribute from the specified header, converting it
- * to the host byte order if needed.
- */
-G_GNUC_CONST
-static uint64_t
-dsdiff_chunk_size(const struct dsdiff_chunk_header *header)
-{
-	return (((uint64_t)GUINT32_FROM_BE(header->size_high)) << 32) |
-		((uint64_t)GUINT32_FROM_BE(header->size_low));
-}
-
-static bool
-dsdiff_read_id(struct decoder *decoder, struct input_stream *is,
-	       struct dsdlib_id *id)
-{
-	return dsdlib_read(decoder, is, id, sizeof(*id));
-}
-
-static bool
-dsdiff_read_chunk_header(struct decoder *decoder, struct input_stream *is,
-			 struct dsdiff_chunk_header *header)
-{
-	return dsdlib_read(decoder, is, header, sizeof(*header));
-}
-
-static bool
-dsdiff_read_payload(struct decoder *decoder, struct input_stream *is,
-		    const struct dsdiff_chunk_header *header,
-		    void *data, size_t length)
-{
-	uint64_t size = dsdiff_chunk_size(header);
-	if (size != (uint64_t)length)
-		return false;
-
-	size_t nbytes = decoder_read(decoder, is, data, length);
-	return nbytes == length;
-}
-
-/**
- * Read and parse a "SND" chunk inside "PROP".
- */
-static bool
-dsdiff_read_prop_snd(struct decoder *decoder, struct input_stream *is,
-		     struct dsdiff_metadata *metadata,
-		     goffset end_offset)
-{
-	struct dsdiff_chunk_header header;
-	while ((goffset)(input_stream_get_offset(is) + sizeof(header)) <= end_offset) {
-		if (!dsdiff_read_chunk_header(decoder, is, &header))
-			return false;
-
-		goffset chunk_end_offset = input_stream_get_offset(is)
-			+ dsdiff_chunk_size(&header);
-		if (chunk_end_offset > end_offset)
-			return false;
-
-		if (dsdlib_id_equals(&header.id, "FS  ")) {
-			uint32_t sample_rate;
-			if (!dsdiff_read_payload(decoder, is, &header,
-						 &sample_rate,
-						 sizeof(sample_rate)))
-				return false;
-
-			metadata->sample_rate = GUINT32_FROM_BE(sample_rate);
-		} else if (dsdlib_id_equals(&header.id, "CHNL")) {
-			uint16_t channels;
-			if (dsdiff_chunk_size(&header) < sizeof(channels) ||
-			    !dsdlib_read(decoder, is,
-					 &channels, sizeof(channels)) ||
-			    !dsdlib_skip_to(decoder, is, chunk_end_offset))
-				return false;
-
-			metadata->channels = GUINT16_FROM_BE(channels);
-		} else if (dsdlib_id_equals(&header.id, "CMPR")) {
-			struct dsdlib_id type;
-			if (dsdiff_chunk_size(&header) < sizeof(type) ||
-			    !dsdlib_read(decoder, is,
-					 &type, sizeof(type)) ||
-			    !dsdlib_skip_to(decoder, is, chunk_end_offset))
-				return false;
-
-			if (!dsdlib_id_equals(&type, "DSD "))
-				/* only uncompressed DSD audio data
-				   is implemented */
-				return false;
-		} else {
-			/* ignore unknown chunk */
-
-			if (!dsdlib_skip_to(decoder, is, chunk_end_offset))
-				return false;
-		}
-	}
-
-	return input_stream_get_offset(is) == end_offset;
-}
-
-/**
- * Read and parse a "PROP" chunk.
- */
-static bool
-dsdiff_read_prop(struct decoder *decoder, struct input_stream *is,
-		 struct dsdiff_metadata *metadata,
-		 const struct dsdiff_chunk_header *prop_header)
-{
-	uint64_t prop_size = dsdiff_chunk_size(prop_header);
-	goffset end_offset = input_stream_get_offset(is) + prop_size;
-
-	struct dsdlib_id prop_id;
-	if (prop_size < sizeof(prop_id) ||
-	    !dsdiff_read_id(decoder, is, &prop_id))
-		return false;
-
-	if (dsdlib_id_equals(&prop_id, "SND "))
-		return dsdiff_read_prop_snd(decoder, is, metadata, end_offset);
-	else
-		/* ignore unknown PROP chunk */
-		return dsdlib_skip_to(decoder, is, end_offset);
-}
-
-static void
-dsdiff_handle_native_tag(struct input_stream *is,
-			 const struct tag_handler *handler,
-			 void *handler_ctx, goffset tagoffset,
-			 enum tag_type type)
-{
-	if (!dsdlib_skip_to(NULL, is, tagoffset))
-		return;
-
-	struct dsdiff_native_tag metatag;
-
-	if (!dsdlib_read(NULL, is, &metatag, sizeof(metatag)))
-		return;
-
-	uint32_t length = GUINT32_FROM_BE(metatag.size);
-
-	/* Check and limit size of the tag to prevent a stack overflow */
-	if (length == 0 || length > 60)
-		return;
-
-	char string[length];
-	char *label;
-	label = string;
-
-	if (!dsdlib_read(NULL, is, label, (size_t)length))
-		return;
-
-	string[length] = '\0';
-	tag_handler_invoke_tag(handler, handler_ctx, type, label);
-	return;
-}
-
-/**
- * Read and parse additional metadata chunks for tagging purposes. By default
- * dsdiff files only support equivalents for artist and title but some of the
- * extract tools add an id3 tag to provide more tags. If such id3 is found
- * this will be used for tagging otherwise the native tags (if any) will be
- * used
- */
-
-static bool
-dsdiff_read_metadata_extra(struct decoder *decoder, struct input_stream *is,
-			   struct dsdiff_metadata *metadata,
-			   struct dsdiff_chunk_header *chunk_header,
-			   const struct tag_handler *handler,
-			   void *handler_ctx)
-{
-
-	/* skip from DSD data to next chunk header */
-	if (!dsdlib_skip(decoder, is, metadata->chunk_size))
-		return false;
-	if (!dsdiff_read_chunk_header(decoder, is, chunk_header))
-		return false;
-
-#ifdef HAVE_ID3TAG
-	metadata->id3_size = 0;
-#endif
-
-	/* Now process all the remaining chunk headers in the stream
-	   and record their position and size */
-
-	const goffset size = input_stream_get_size(is);
-	while (input_stream_get_offset(is) < size) {
-		uint64_t chunk_size = dsdiff_chunk_size(chunk_header);
-
-		/* DIIN chunk, is directly followed by other chunks  */
-		if (dsdlib_id_equals(&chunk_header->id, "DIIN"))
-			chunk_size = 0;
-
-		/* DIAR chunk - DSDIFF native tag for Artist */
-		if (dsdlib_id_equals(&chunk_header->id, "DIAR")) {
-			chunk_size = dsdiff_chunk_size(chunk_header);
-			metadata->diar_offset = input_stream_get_offset(is);
-		}
-
-		/* DITI chunk - DSDIFF native tag for Title */
-		if (dsdlib_id_equals(&chunk_header->id, "DITI")) {
-			chunk_size = dsdiff_chunk_size(chunk_header);
-			metadata->diti_offset = input_stream_get_offset(is);
-		}
-#ifdef HAVE_ID3TAG
-		/* 'ID3 ' chunk, offspec. Used by sacdextract */
-		if (dsdlib_id_equals(&chunk_header->id, "ID3 ")) {
-			chunk_size = dsdiff_chunk_size(chunk_header);
-			metadata->id3_offset = input_stream_get_offset(is);
-			metadata->id3_size = chunk_size;
-		}
-#endif
-		if (chunk_size != 0) {
-			if (!dsdlib_skip(decoder, is, chunk_size))
-				break;
-		}
-
-		if (input_stream_get_offset(is) < size) {
-			if (!dsdiff_read_chunk_header(decoder, is, chunk_header))
-				return false;
-		}
-		chunk_size = 0;
-	}
-	/* done processing chunk headers, process tags if any */
-
-#ifdef HAVE_ID3TAG
-	if (metadata->id3_offset != 0)
-	{
-		/* a ID3 tag has preference over the other tags, do not process
-		   other tags if we have one */
-		dsdlib_tag_id3(is, handler, handler_ctx, metadata->id3_offset);
-		return true;
-	}
-#endif
-
-	if (metadata->diar_offset != 0)
-		dsdiff_handle_native_tag(is, handler, handler_ctx,
-					 metadata->diar_offset, TAG_ARTIST);
-
-	if (metadata->diti_offset != 0)
-		dsdiff_handle_native_tag(is, handler, handler_ctx,
-					 metadata->diti_offset, TAG_TITLE);
-	return true;
-}
-
-/**
- * Read and parse all metadata chunks at the beginning.  Stop when the
- * first "DSD" chunk is seen, and return its header in the
- * "chunk_header" parameter.
- */
-static bool
-dsdiff_read_metadata(struct decoder *decoder, struct input_stream *is,
-		     struct dsdiff_metadata *metadata,
-		     struct dsdiff_chunk_header *chunk_header)
-{
-	struct dsdiff_header header;
-	if (!dsdlib_read(decoder, is, &header, sizeof(header)) ||
-	    !dsdlib_id_equals(&header.id, "FRM8") ||
-	    !dsdlib_id_equals(&header.format, "DSD "))
-		return false;
-
-	while (true) {
-		if (!dsdiff_read_chunk_header(decoder, is,
-					      chunk_header))
-			return false;
-
-		if (dsdlib_id_equals(&chunk_header->id, "PROP")) {
-			if (!dsdiff_read_prop(decoder, is, metadata,
-					      chunk_header))
-					return false;
-		} else if (dsdlib_id_equals(&chunk_header->id, "DSD ")) {
-			uint64_t chunk_size;
-			chunk_size = dsdiff_chunk_size(chunk_header);
-			metadata->chunk_size = chunk_size;
-			return true;
-		} else {
-			/* ignore unknown chunk */
-			uint64_t chunk_size;
-			chunk_size = dsdiff_chunk_size(chunk_header);
-			goffset chunk_end_offset = input_stream_get_offset(is)
-				+ chunk_size;
-
-			if (!dsdlib_skip_to(decoder, is, chunk_end_offset))
-				return false;
-		}
-	}
-}
-
-static void
-bit_reverse_buffer(uint8_t *p, uint8_t *end)
-{
-	for (; p < end; ++p)
-		*p = bit_reverse(*p);
-}
-
-/**
- * Decode one "DSD" chunk.
- */
-static bool
-dsdiff_decode_chunk(struct decoder *decoder, struct input_stream *is,
-		    unsigned channels,
-		    uint64_t chunk_size)
-{
-	uint8_t 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 > 0) {
-		/* see how much aligned data from the remaining chunk
-		   fits into the local buffer */
-		unsigned now_frames = buffer_frames;
-		size_t now_size = buffer_size;
-		if (chunk_size < (uint64_t)now_size) {
-			now_frames = (unsigned)chunk_size / frame_size;
-			now_size = now_frames * frame_size;
-		}
-
-		size_t nbytes = decoder_read(decoder, is, buffer, now_size);
-		if (nbytes != now_size)
-			return false;
-
-		chunk_size -= nbytes;
-
-		if (lsbitfirst)
-			bit_reverse_buffer(buffer, buffer + nbytes);
-
-		enum decoder_command cmd =
-			decoder_data(decoder, is, buffer, nbytes, 0);
-		switch (cmd) {
-		case DECODE_COMMAND_NONE:
-			break;
-
-		case DECODE_COMMAND_START:
-		case DECODE_COMMAND_STOP:
-			return false;
-
-		case DECODE_COMMAND_SEEK:
-
-			/* Not implemented yet */
-			decoder_seek_error(decoder);
-			break;
-		}
-	}
-	return dsdlib_skip(decoder, is, chunk_size);
-}
-
-static void
-dsdiff_stream_decode(struct decoder *decoder, struct input_stream *is)
-{
-	struct dsdiff_metadata metadata = {
-		.sample_rate = 0,
-		.channels = 0,
-	};
-
-	struct dsdiff_chunk_header chunk_header;
-	/* check if it is is a proper DFF file */
-	if (!dsdiff_read_metadata(decoder, is, &metadata, &chunk_header))
-		return;
-
-	GError *error = NULL;
-	struct audio_format audio_format;
-	if (!audio_format_init_checked(&audio_format, metadata.sample_rate / 8,
-				       SAMPLE_FORMAT_DSD,
-				       metadata.channels, &error)) {
-		g_warning("%s", error->message);
-		g_error_free(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);
-
-	/* every iteration of the following loop decodes one "DSD"
-	   chunk from a DFF file */
-
-	while (true) {
-		chunk_size = dsdiff_chunk_size(&chunk_header);
-
-		if (dsdlib_id_equals(&chunk_header.id, "DSD ")) {
-			if (!dsdiff_decode_chunk(decoder, is,
-						 metadata.channels,
-						 chunk_size))
-					break;
-		} else {
-			/* ignore other chunks */
-			if (!dsdlib_skip(decoder, is, chunk_size))
-				break;
-		}
-
-		/* read next chunk header; the first one was read by
-		   dsdiff_read_metadata() */
-		if (!dsdiff_read_chunk_header(decoder,
-					      is, &chunk_header))
-			break;
-	}
-}
-
-static bool
-dsdiff_scan_stream(struct input_stream *is,
-		   G_GNUC_UNUSED const struct tag_handler *handler,
-		   G_GNUC_UNUSED void *handler_ctx)
-{
-	struct dsdiff_metadata metadata = {
-		.sample_rate = 0,
-		.channels = 0,
-	};
-
-	struct dsdiff_chunk_header chunk_header;
-	/* First check for DFF metadata */
-	if (!dsdiff_read_metadata(NULL, is, &metadata, &chunk_header))
-		return false;
-
-	struct audio_format audio_format;
-	if (!audio_format_init_checked(&audio_format, metadata.sample_rate / 8,
-				       SAMPLE_FORMAT_DSD,
-				       metadata.channels, NULL))
-		/* 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);
-
-	/* Read additional metadata and created tags if available */
-	dsdiff_read_metadata_extra(NULL, is, &metadata, &chunk_header,
-				   handler, handler_ctx);
-
-	return true;
-}
-
-static const char *const dsdiff_suffixes[] = {
-	"dff",
-	NULL
-};
-
-static const char *const dsdiff_mime_types[] = {
-	"application/x-dff",
-	NULL
-};
-
-const struct decoder_plugin dsdiff_decoder_plugin = {
-	.name = "dsdiff",
-	.init = dsdiff_init,
-	.stream_decode = dsdiff_stream_decode,
-	.scan_stream = dsdiff_scan_stream,
-	.suffixes = dsdiff_suffixes,
-	.mime_types = dsdiff_mime_types,
-};