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, 355 insertions, 0 deletions

diff --git a/src/decoder/oggflac_plugin.c b/src/decoder/oggflac_plugin.c
new file mode 100644
index 000000000..091b00988
--- /dev/null
+++ b/src/decoder/oggflac_plugin.c
@@ -0,0 +1,355 @@
+/* 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
+ *
+ * OggFLAC support (half-stolen from flac_plugin.c :))
+ * (c) 2005 by Eric Wong <normalperson@yhbt.net>
+ *
+ * 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 "_ogg_common.h"
+
+#include "../utils.h"
+#include "../log.h"
+
+#include <OggFLAC/seekable_stream_decoder.h>
+
+static void oggflac_cleanup(FlacData * data,
+			    OggFLAC__SeekableStreamDecoder * decoder)
+{
+	if (data->replayGainInfo)
+		freeReplayGainInfo(data->replayGainInfo);
+	if (decoder)
+		OggFLAC__seekable_stream_decoder_delete(decoder);
+}
+
+static OggFLAC__SeekableStreamDecoderReadStatus of_read_cb(mpd_unused const
+							   OggFLAC__SeekableStreamDecoder
+							   * decoder,
+							   FLAC__byte buf[],
+							   unsigned *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 && !inputStreamAtEOF(data->inStream) &&
+	    decoder_get_command(data->decoder) == DECODE_COMMAND_NONE)
+		return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR;
+
+	return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK;
+}
+
+static OggFLAC__SeekableStreamDecoderSeekStatus of_seek_cb(mpd_unused const
+							   OggFLAC__SeekableStreamDecoder
+							   * decoder,
+							   FLAC__uint64 offset,
+							   void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+
+	if (seekInputStream(data->inStream, offset, SEEK_SET) < 0) {
+		return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR;
+	}
+
+	return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK;
+}
+
+static OggFLAC__SeekableStreamDecoderTellStatus of_tell_cb(mpd_unused const
+							   OggFLAC__SeekableStreamDecoder
+							   * decoder,
+							   FLAC__uint64 *
+							   offset, void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+
+	*offset = (long)(data->inStream->offset);
+
+	return OggFLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK;
+}
+
+static OggFLAC__SeekableStreamDecoderLengthStatus of_length_cb(mpd_unused const
+							       OggFLAC__SeekableStreamDecoder
+							       * decoder,
+							       FLAC__uint64 *
+							       length,
+							       void *fdata)
+{
+	FlacData *data = (FlacData *) fdata;
+
+	*length = (size_t) (data->inStream->size);
+
+	return OggFLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK;
+}
+
+static FLAC__bool of_EOF_cb(mpd_unused const OggFLAC__SeekableStreamDecoder * decoder,
+			    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 of_error_cb(mpd_unused const OggFLAC__SeekableStreamDecoder * decoder,
+			FLAC__StreamDecoderErrorStatus status, void *fdata)
+{
+	flac_error_common_cb("oggflac", status, (FlacData *) fdata);
+}
+
+static void oggflacPrintErroredState(OggFLAC__SeekableStreamDecoderState state)
+{
+	switch (state) {
+	case OggFLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
+		ERROR("oggflac allocation error\n");
+		break;
+	case OggFLAC__SEEKABLE_STREAM_DECODER_READ_ERROR:
+		ERROR("oggflac read error\n");
+		break;
+	case OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR:
+		ERROR("oggflac seek error\n");
+		break;
+	case OggFLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR:
+		ERROR("oggflac seekable stream error\n");
+		break;
+	case OggFLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED:
+		ERROR("oggflac decoder already initialized\n");
+		break;
+	case OggFLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK:
+		ERROR("invalid oggflac callback\n");
+		break;
+	case OggFLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED:
+		ERROR("oggflac decoder uninitialized\n");
+		break;
+	case OggFLAC__SEEKABLE_STREAM_DECODER_OK:
+	case OggFLAC__SEEKABLE_STREAM_DECODER_SEEKING:
+	case OggFLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM:
+		break;
+	}
+}
+
+static FLAC__StreamDecoderWriteStatus oggflacWrite(mpd_unused const
+						   OggFLAC__SeekableStreamDecoder
+						   * decoder,
+						   const FLAC__Frame * frame,
+						   const FLAC__int32 *
+						   const buf[], void *vdata)
+{
+	FlacData *data = (FlacData *) vdata;
+	FLAC__uint32 samples = frame->header.blocksize;
+	float timeChange;
+
+	timeChange = ((float)samples) / frame->header.sample_rate;
+	data->time += timeChange;
+
+	return flac_common_write(data, frame, buf);
+}
+
+/* used by TagDup */
+static void of_metadata_dup_cb(mpd_unused const OggFLAC__SeekableStreamDecoder * decoder,
+			       const FLAC__StreamMetadata * block, void *vdata)
+{
+	FlacData *data = (FlacData *) vdata;
+
+	switch (block->type) {
+	case FLAC__METADATA_TYPE_STREAMINFO:
+		if (!data->tag)
+			data->tag = tag_new();
+		data->tag->time = ((float)block->data.stream_info.
+				   total_samples) /
+		    block->data.stream_info.sample_rate + 0.5;
+		return;
+	case FLAC__METADATA_TYPE_VORBIS_COMMENT:
+		copyVorbisCommentBlockToMpdTag(block, data->tag);
+	default:
+		break;
+	}
+}
+
+/* used by decode */
+static void of_metadata_decode_cb(mpd_unused const OggFLAC__SeekableStreamDecoder * dec,
+				  const FLAC__StreamMetadata * block,
+				  void *vdata)
+{
+	flac_metadata_common_cb(block, (FlacData *) vdata);
+}
+
+static OggFLAC__SeekableStreamDecoder
+    * full_decoder_init_and_read_metadata(FlacData * data,
+					  unsigned int metadata_only)
+{
+	OggFLAC__SeekableStreamDecoder *decoder = NULL;
+	unsigned int s = 1;
+
+	if (!(decoder = OggFLAC__seekable_stream_decoder_new()))
+		return NULL;
+
+	if (metadata_only) {
+		s &= OggFLAC__seekable_stream_decoder_set_metadata_callback
+		    (decoder, of_metadata_dup_cb);
+		s &= OggFLAC__seekable_stream_decoder_set_metadata_respond
+		    (decoder, FLAC__METADATA_TYPE_STREAMINFO);
+	} else {
+		s &= OggFLAC__seekable_stream_decoder_set_metadata_callback
+		    (decoder, of_metadata_decode_cb);
+	}
+
+	s &= OggFLAC__seekable_stream_decoder_set_read_callback(decoder,
+								of_read_cb);
+	s &= OggFLAC__seekable_stream_decoder_set_seek_callback(decoder,
+								of_seek_cb);
+	s &= OggFLAC__seekable_stream_decoder_set_tell_callback(decoder,
+								of_tell_cb);
+	s &= OggFLAC__seekable_stream_decoder_set_length_callback(decoder,
+								  of_length_cb);
+	s &= OggFLAC__seekable_stream_decoder_set_eof_callback(decoder,
+							       of_EOF_cb);
+	s &= OggFLAC__seekable_stream_decoder_set_write_callback(decoder,
+								 oggflacWrite);
+	s &= OggFLAC__seekable_stream_decoder_set_metadata_respond(decoder,
+								   FLAC__METADATA_TYPE_VORBIS_COMMENT);
+	s &= OggFLAC__seekable_stream_decoder_set_error_callback(decoder,
+								 of_error_cb);
+	s &= OggFLAC__seekable_stream_decoder_set_client_data(decoder,
+							      (void *)data);
+
+	if (!s) {
+		ERROR("oggflac problem before init()\n");
+		goto fail;
+	}
+	if (OggFLAC__seekable_stream_decoder_init(decoder) !=
+	    OggFLAC__SEEKABLE_STREAM_DECODER_OK) {
+		ERROR("oggflac problem doing init()\n");
+		goto fail;
+	}
+	if (!OggFLAC__seekable_stream_decoder_process_until_end_of_metadata
+	    (decoder)) {
+		ERROR("oggflac problem reading metadata\n");
+		goto fail;
+	}
+
+	return decoder;
+
+fail:
+	oggflacPrintErroredState(OggFLAC__seekable_stream_decoder_get_state
+				 (decoder));
+	OggFLAC__seekable_stream_decoder_delete(decoder);
+	return NULL;
+}
+
+/* public functions: */
+static struct tag *oggflac_TagDup(char *file)
+{
+	InputStream inStream;
+	OggFLAC__SeekableStreamDecoder *decoder;
+	FlacData data;
+
+	if (openInputStream(&inStream, file) < 0)
+		return NULL;
+	if (ogg_stream_type_detect(&inStream) != FLAC) {
+		closeInputStream(&inStream);
+		return NULL;
+	}
+
+	init_FlacData(&data, NULL, &inStream);
+
+	/* errors here won't matter,
+	 * data.tag will be set or unset, that's all we care about */
+	decoder = full_decoder_init_and_read_metadata(&data, 1);
+
+	oggflac_cleanup(&data, decoder);
+	closeInputStream(&inStream);
+
+	return data.tag;
+}
+
+static bool oggflac_try_decode(InputStream * inStream)
+{
+	if (!inStream->seekable)
+		/* we cannot seek after the detection, so don't bother
+		   checking */
+		return true;
+
+	return ogg_stream_type_detect(inStream) == FLAC;
+}
+
+static int oggflac_decode(struct decoder * mpd_decoder, InputStream * inStream)
+{
+	OggFLAC__SeekableStreamDecoder *decoder = NULL;
+	FlacData data;
+	int ret = 0;
+
+	init_FlacData(&data, mpd_decoder, inStream);
+
+	if (!(decoder = full_decoder_init_and_read_metadata(&data, 0))) {
+		ret = -1;
+		goto fail;
+	}
+
+	decoder_initialized(mpd_decoder, &data.audio_format, data.total_time);
+
+	while (1) {
+		OggFLAC__seekable_stream_decoder_process_single(decoder);
+		if (OggFLAC__seekable_stream_decoder_get_state(decoder) !=
+		    OggFLAC__SEEKABLE_STREAM_DECODER_OK) {
+			break;
+		}
+		if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) {
+			FLAC__uint64 sampleToSeek = decoder_seek_where(mpd_decoder) *
+			    data.audio_format.sample_rate + 0.5;
+			if (OggFLAC__seekable_stream_decoder_seek_absolute
+			    (decoder, sampleToSeek)) {
+				decoder_clear(mpd_decoder);
+				data.time = ((float)sampleToSeek) /
+				    data.audio_format.sample_rate;
+				data.position = 0;
+				decoder_command_finished(mpd_decoder);
+			} else
+				decoder_seek_error(mpd_decoder);
+		}
+	}
+
+	if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_NONE) {
+		oggflacPrintErroredState
+		    (OggFLAC__seekable_stream_decoder_get_state(decoder));
+		OggFLAC__seekable_stream_decoder_finish(decoder);
+	}
+
+fail:
+	oggflac_cleanup(&data, decoder);
+
+	return ret;
+}
+
+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_TagDup,
+	.stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
+	.suffixes = oggflac_Suffixes,
+	.mime_types = oggflac_mime_types
+};