renamed src/inputPlugins/ to src/decoder/

These plugins are not input plugins, they are decoder plugins.  No
CamelCase in the directory name.

1 files changed, 459 insertions, 0 deletions

diff --git a/src/decoder/flac_plugin.c b/src/decoder/flac_plugin.c
new file mode 100644
index 000000000..7b9fce27d
--- /dev/null
+++ b/src/decoder/flac_plugin.c
@@ -0,0 +1,459 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "_flac_common.h"
+#include "../utils.h"
+#include "../log.h"
+
+#include <assert.h>
+
+/* this code was based on flac123, from flac-tools */
+
+static flac_read_status flacRead(mpd_unused const flac_decoder * flacDec,
+                                  FLAC__byte buf[],
+				  flac_read_status_size_t *bytes,
+				  void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+	size_t r;
+
+	r = decoder_read(data->decoder, data->inStream, (void *)buf, *bytes);
+	*bytes = r;
+
+	if (r == 0) {
+		if (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE ||
+		    inputStreamAtEOF(data->inStream))
+			return flac_read_status_eof;
+		else
+			return flac_read_status_abort;
+	}
+
+	return flac_read_status_continue;
+}
+
+static flac_seek_status flacSeek(mpd_unused const flac_decoder * flacDec,
+				 FLAC__uint64 offset,
+				 void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+
+	if (seekInputStream(data->inStream, offset, SEEK_SET) < 0) {
+		return flac_seek_status_error;
+	}
+
+	return flac_seek_status_ok;
+}
+
+static flac_tell_status flacTell(mpd_unused const flac_decoder * flacDec,
+				 FLAC__uint64 * offset,
+				 void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+
+	*offset = (long)(data->inStream->offset);
+
+	return flac_tell_status_ok;
+}
+
+static flac_length_status flacLength(mpd_unused const flac_decoder * flacDec,
+				     FLAC__uint64 * length,
+				     void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+
+	*length = (size_t) (data->inStream->size);
+
+	return flac_length_status_ok;
+}
+
+static FLAC__bool flacEOF(mpd_unused const flac_decoder * flacDec, void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+
+	return (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE &&
+		decoder_get_command(data->decoder) != DECODE_COMMAND_SEEK) ||
+		inputStreamAtEOF(data->inStream);
+}
+
+static void flacError(mpd_unused const flac_decoder *dec,
+		      FLAC__StreamDecoderErrorStatus status, void *fdata)
+{
+	flac_error_common_cb("flac", status, (FlacData *) fdata);
+}
+
+#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
+static void flacPrintErroredState(FLAC__SeekableStreamDecoderState state)
+{
+	const char *str = ""; /* "" to silence compiler warning */
+	switch (state) {
+	case FLAC__SEEKABLE_STREAM_DECODER_OK:
+	case FLAC__SEEKABLE_STREAM_DECODER_SEEKING:
+	case FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM:
+		return;
+	case FLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
+		str = "allocation error";
+		break;
+	case FLAC__SEEKABLE_STREAM_DECODER_READ_ERROR:
+		str = "read error";
+		break;
+	case FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR:
+		str = "seek error";
+		break;
+	case FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR:
+		str = "seekable stream error";
+		break;
+	case FLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED:
+		str = "decoder already initialized";
+		break;
+	case FLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK:
+		str = "invalid callback";
+		break;
+	case FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED:
+		str = "decoder uninitialized";
+	}
+	ERROR("flac %s\n", str);
+}
+
+static int flac_init(FLAC__SeekableStreamDecoder *dec,
+                     FLAC__SeekableStreamDecoderReadCallback read_cb,
+                     FLAC__SeekableStreamDecoderSeekCallback seek_cb,
+                     FLAC__SeekableStreamDecoderTellCallback tell_cb,
+                     FLAC__SeekableStreamDecoderLengthCallback length_cb,
+                     FLAC__SeekableStreamDecoderEofCallback eof_cb,
+                     FLAC__SeekableStreamDecoderWriteCallback write_cb,
+                     FLAC__SeekableStreamDecoderMetadataCallback metadata_cb,
+                     FLAC__SeekableStreamDecoderErrorCallback error_cb,
+                     void *data)
+{
+	int s = 1;
+	s &= FLAC__seekable_stream_decoder_set_read_callback(dec, read_cb);
+	s &= FLAC__seekable_stream_decoder_set_seek_callback(dec, seek_cb);
+	s &= FLAC__seekable_stream_decoder_set_tell_callback(dec, tell_cb);
+	s &= FLAC__seekable_stream_decoder_set_length_callback(dec, length_cb);
+	s &= FLAC__seekable_stream_decoder_set_eof_callback(dec, eof_cb);
+	s &= FLAC__seekable_stream_decoder_set_write_callback(dec, write_cb);
+	s &= FLAC__seekable_stream_decoder_set_metadata_callback(dec,
+	                                                         metadata_cb);
+	s &= FLAC__seekable_stream_decoder_set_metadata_respond(dec,
+	                                  FLAC__METADATA_TYPE_VORBIS_COMMENT);
+	s &= FLAC__seekable_stream_decoder_set_error_callback(dec, error_cb);
+	s &= FLAC__seekable_stream_decoder_set_client_data(dec, data);
+	if (!s || (FLAC__seekable_stream_decoder_init(dec) !=
+	           FLAC__SEEKABLE_STREAM_DECODER_OK))
+		return 0;
+	return 1;
+}
+#else /* FLAC_API_VERSION_CURRENT >= 7 */
+static void flacPrintErroredState(FLAC__StreamDecoderState state)
+{
+	const char *str = ""; /* "" to silence compiler warning */
+	switch (state) {
+	case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
+	case FLAC__STREAM_DECODER_READ_METADATA:
+	case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
+	case FLAC__STREAM_DECODER_READ_FRAME:
+	case FLAC__STREAM_DECODER_END_OF_STREAM:
+		return;
+	case FLAC__STREAM_DECODER_OGG_ERROR:
+		str = "error in the Ogg layer";
+		break;
+	case FLAC__STREAM_DECODER_SEEK_ERROR:
+		str = "seek error";
+		break;
+	case FLAC__STREAM_DECODER_ABORTED:
+		str = "decoder aborted by read";
+		break;
+	case FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
+		str = "allocation error";
+		break;
+	case FLAC__STREAM_DECODER_UNINITIALIZED:
+		str = "decoder uninitialized";
+	}
+	ERROR("flac %s\n", str);
+}
+#endif /* FLAC_API_VERSION_CURRENT >= 7 */
+
+static void flacMetadata(mpd_unused const flac_decoder * dec,
+			 const FLAC__StreamMetadata * block, void *vdata)
+{
+	flac_metadata_common_cb(block, (FlacData *) vdata);
+}
+
+static FLAC__StreamDecoderWriteStatus flacWrite(const flac_decoder *dec,
+                                                const FLAC__Frame * frame,
+						const FLAC__int32 * const buf[],
+						void *vdata)
+{
+	FLAC__uint32 samples = frame->header.blocksize;
+	FlacData *data = (FlacData *) vdata;
+	float timeChange;
+	FLAC__uint64 newPosition = 0;
+
+	timeChange = ((float)samples) / frame->header.sample_rate;
+	data->time += timeChange;
+
+	flac_get_decode_position(dec, &newPosition);
+	if (data->position && newPosition >= data->position) {
+		assert(timeChange >= 0);
+
+		data->bitRate =
+		    ((newPosition - data->position) * 8.0 / timeChange)
+		    / 1000 + 0.5;
+	}
+	data->position = newPosition;
+
+	return flac_common_write(data, frame, buf);
+}
+
+static struct tag *flacMetadataDup(char *file, int *vorbisCommentFound)
+{
+	struct tag *ret = NULL;
+	FLAC__Metadata_SimpleIterator *it;
+	FLAC__StreamMetadata *block = NULL;
+
+	*vorbisCommentFound = 0;
+
+	it = FLAC__metadata_simple_iterator_new();
+	if (!FLAC__metadata_simple_iterator_init(it, file, 1, 0)) {
+		const char *err;
+		FLAC_API FLAC__Metadata_SimpleIteratorStatus s;
+
+		s = FLAC__metadata_simple_iterator_status(it);
+
+		switch (s) { /* slightly more human-friendly messages: */
+		case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT:
+			err = "illegal input";
+			break;
+		case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE:
+			err = "error opening file";
+			break;
+		case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE:
+			err = "not a FLAC file";
+			break;
+		default:
+			err = FLAC__Metadata_SimpleIteratorStatusString[s];
+		}
+		DEBUG("flacMetadataDup: Reading '%s' "
+		      "metadata gave the following error: %s\n",
+		      file, err);
+		FLAC__metadata_simple_iterator_delete(it);
+		return ret;
+	}
+
+	do {
+		block = FLAC__metadata_simple_iterator_get_block(it);
+		if (!block)
+			break;
+		if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+			ret = copyVorbisCommentBlockToMpdTag(block, ret);
+
+			if (ret)
+				*vorbisCommentFound = 1;
+		} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
+			if (!ret)
+				ret = tag_new();
+			ret->time = ((float)block->data.stream_info.
+				     total_samples) /
+			    block->data.stream_info.sample_rate + 0.5;
+		}
+		FLAC__metadata_object_delete(block);
+	} while (FLAC__metadata_simple_iterator_next(it));
+
+	FLAC__metadata_simple_iterator_delete(it);
+	return ret;
+}
+
+static struct tag *flacTagDup(char *file)
+{
+	struct tag *ret = NULL;
+	int foundVorbisComment = 0;
+
+	ret = flacMetadataDup(file, &foundVorbisComment);
+	if (!ret) {
+		DEBUG("flacTagDup: Failed to grab information from: %s\n",
+		      file);
+		return NULL;
+	}
+	if (!foundVorbisComment) {
+		struct tag *temp = tag_id3_load(file);
+		if (temp) {
+			temp->time = ret->time;
+			tag_free(ret);
+			ret = temp;
+		}
+	}
+
+	return ret;
+}
+
+static int flac_decode_internal(struct decoder * decoder,
+				InputStream * inStream, int is_ogg)
+{
+	flac_decoder *flacDec;
+	FlacData data;
+	const char *err = NULL;
+
+	if (!(flacDec = flac_new()))
+		return -1;
+	init_FlacData(&data, decoder, inStream);
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+        if(!FLAC__stream_decoder_set_metadata_respond(flacDec, FLAC__METADATA_TYPE_VORBIS_COMMENT))
+        {
+                DEBUG(__FILE__": Failed to set metadata respond\n");
+        }
+#endif
+
+
+	if (is_ogg) {
+		if (!flac_ogg_init(flacDec, flacRead, flacSeek, flacTell,
+		                   flacLength, flacEOF, flacWrite, flacMetadata,
+			           flacError, (void *)&data)) {
+			err = "doing Ogg init()";
+			goto fail;
+		}
+	} else {
+		if (!flac_init(flacDec, flacRead, flacSeek, flacTell,
+		               flacLength, flacEOF, flacWrite, flacMetadata,
+			       flacError, (void *)&data)) {
+			err = "doing init()";
+			goto fail;
+		}
+		if (!flac_process_metadata(flacDec)) {
+			err = "problem reading metadata";
+			goto fail;
+		}
+	}
+
+	decoder_initialized(decoder, &data.audio_format, data.total_time);
+
+	while (1) {
+		if (!flac_process_single(flacDec))
+			break;
+		if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
+			FLAC__uint64 sampleToSeek = decoder_seek_where(decoder) *
+			    data.audio_format.sample_rate + 0.5;
+			if (flac_seek_absolute(flacDec, sampleToSeek)) {
+				decoder_clear(decoder);
+				data.time = ((float)sampleToSeek) /
+				    data.audio_format.sample_rate;
+				data.position = 0;
+				decoder_command_finished(decoder);
+			} else
+				decoder_seek_error(decoder);
+		} else if (flac_get_state(flacDec) == flac_decoder_eof)
+			break;
+	}
+	if (decoder_get_command(decoder) != DECODE_COMMAND_STOP) {
+		flacPrintErroredState(flac_get_state(flacDec));
+		flac_finish(flacDec);
+	}
+
+fail:
+	if (data.replayGainInfo)
+		freeReplayGainInfo(data.replayGainInfo);
+
+	if (flacDec)
+		flac_delete(flacDec);
+
+	if (err) {
+		ERROR("flac %s\n", err);
+		return -1;
+	}
+	return 0;
+}
+
+static int flac_decode(struct decoder * decoder, InputStream * inStream)
+{
+	return flac_decode_internal(decoder, inStream, 0);
+}
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7 && \
+	!defined(HAVE_OGGFLAC)
+static struct tag *oggflac_tag_dup(char *file)
+{
+	struct tag *ret = NULL;
+	FLAC__Metadata_Iterator *it;
+	FLAC__StreamMetadata *block;
+	FLAC__Metadata_Chain *chain = FLAC__metadata_chain_new();
+
+	if (!(FLAC__metadata_chain_read_ogg(chain, file)))
+		goto out;
+	it = FLAC__metadata_iterator_new();
+	FLAC__metadata_iterator_init(it, chain);
+	do {
+		if (!(block = FLAC__metadata_iterator_get_block(it)))
+			break;
+		if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+			ret = copyVorbisCommentBlockToMpdTag(block, ret);
+		} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
+			if (!ret)
+				ret = tag_new();
+			ret->time = ((float)block->data.stream_info.
+				     total_samples) /
+			    block->data.stream_info.sample_rate + 0.5;
+		}
+	} while (FLAC__metadata_iterator_next(it));
+	FLAC__metadata_iterator_delete(it);
+out:
+	FLAC__metadata_chain_delete(chain);
+	return ret;
+}
+
+static int oggflac_decode(struct decoder *decoder, InputStream * inStream)
+{
+	return flac_decode_internal(decoder, inStream, 1);
+}
+
+static bool oggflac_try_decode(InputStream * inStream)
+{
+	return FLAC_API_SUPPORTS_OGG_FLAC &&
+		ogg_stream_type_detect(inStream) == FLAC;
+}
+
+static const char *oggflac_suffixes[] = { "ogg", "oga", NULL };
+static const char *oggflac_mime_types[] = { "audio/x-flac+ogg",
+					    "application/ogg",
+					    "application/x-ogg",
+					    NULL };
+
+struct decoder_plugin oggflacPlugin = {
+	.name = "oggflac",
+	.try_decode = oggflac_try_decode,
+	.stream_decode = oggflac_decode,
+	.tag_dup = oggflac_tag_dup,
+	.stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
+	.suffixes = oggflac_suffixes,
+	.mime_types = oggflac_mime_types
+};
+
+#endif /* FLAC_API_VERSION_CURRENT >= 7 */
+
+static const char *flacSuffixes[] = { "flac", NULL };
+static const char *flac_mime_types[] = { "audio/x-flac",
+					 "application/x-flac",
+					 NULL };
+
+struct decoder_plugin flacPlugin = {
+	.name = "flac",
+	.stream_decode = flac_decode,
+	.tag_dup = flacTagDup,
+	.stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
+	.suffixes = flacSuffixes,
+	.mime_types = flac_mime_types
+};