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, 387 insertions, 0 deletions

diff --git a/src/decoder/oggvorbis_plugin.c b/src/decoder/oggvorbis_plugin.c
new file mode 100644
index 000000000..0eecb783f
--- /dev/null
+++ b/src/decoder/oggvorbis_plugin.c
@@ -0,0 +1,387 @@
+/* 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
+ */
+
+/* TODO 'ogg' should probably be replaced with 'oggvorbis' in all instances */
+
+#include "_ogg_common.h"
+#include "../utils.h"
+#include "../log.h"
+
+#ifndef HAVE_TREMOR
+#include <vorbis/vorbisfile.h>
+#else
+#include <tremor/ivorbisfile.h>
+/* Macros to make Tremor's API look like libogg. Tremor always
+   returns host-byte-order 16-bit signed data, and uses integer
+   milliseconds where libogg uses double seconds. 
+*/
+#define ov_read(VF, BUFFER, LENGTH, BIGENDIANP, WORD, SGNED, BITSTREAM) \
+        ov_read(VF, BUFFER, LENGTH, BITSTREAM)
+#define ov_time_total(VF, I) ((double)ov_time_total(VF, I)/1000)
+#define ov_time_tell(VF) ((double)ov_time_tell(VF)/1000)
+#define ov_time_seek_page(VF, S) (ov_time_seek_page(VF, (S)*1000))
+#endif /* HAVE_TREMOR */
+
+#ifdef WORDS_BIGENDIAN
+#define OGG_DECODE_USE_BIGENDIAN	1
+#else
+#define OGG_DECODE_USE_BIGENDIAN	0
+#endif
+
+typedef struct _OggCallbackData {
+	InputStream *inStream;
+	struct decoder *decoder;
+} OggCallbackData;
+
+static size_t ogg_read_cb(void *ptr, size_t size, size_t nmemb, void *vdata)
+{
+	size_t ret;
+	OggCallbackData *data = (OggCallbackData *) vdata;
+
+	ret = decoder_read(data->decoder, data->inStream, ptr, size * nmemb);
+
+	errno = 0;
+	/*if(ret<0) errno = ((InputStream *)inStream)->error; */
+
+	return ret / size;
+}
+
+static int ogg_seek_cb(void *vdata, ogg_int64_t offset, int whence)
+{
+	const OggCallbackData *data = (const OggCallbackData *) vdata;
+	if(decoder_get_command(data->decoder) == DECODE_COMMAND_STOP)
+		return -1;
+	return seekInputStream(data->inStream, offset, whence);
+}
+
+/* TODO: check Ogg libraries API and see if we can just not have this func */
+static int ogg_close_cb(mpd_unused void *vdata)
+{
+	return 0;
+}
+
+static long ogg_tell_cb(void *vdata)
+{
+	const OggCallbackData *data = (const OggCallbackData *) vdata;
+
+	return (long)(data->inStream->offset);
+}
+
+static const char *ogg_parseComment(const char *comment, const char *needle)
+{
+	int len = strlen(needle);
+
+	if (strncasecmp(comment, needle, len) == 0 && *(comment + len) == '=') {
+		return comment + len + 1;
+	}
+
+	return NULL;
+}
+
+static void ogg_getReplayGainInfo(char **comments, ReplayGainInfo ** infoPtr)
+{
+	const char *temp;
+	int found = 0;
+
+	if (*infoPtr)
+		freeReplayGainInfo(*infoPtr);
+	*infoPtr = newReplayGainInfo();
+
+	while (*comments) {
+		if ((temp =
+		     ogg_parseComment(*comments, "replaygain_track_gain"))) {
+			(*infoPtr)->trackGain = atof(temp);
+			found = 1;
+		} else if ((temp = ogg_parseComment(*comments,
+						    "replaygain_album_gain"))) {
+			(*infoPtr)->albumGain = atof(temp);
+			found = 1;
+		} else if ((temp = ogg_parseComment(*comments,
+						    "replaygain_track_peak"))) {
+			(*infoPtr)->trackPeak = atof(temp);
+			found = 1;
+		} else if ((temp = ogg_parseComment(*comments,
+						    "replaygain_album_peak"))) {
+			(*infoPtr)->albumPeak = atof(temp);
+			found = 1;
+		}
+
+		comments++;
+	}
+
+	if (!found) {
+		freeReplayGainInfo(*infoPtr);
+		*infoPtr = NULL;
+	}
+}
+
+static const char *VORBIS_COMMENT_TRACK_KEY = "tracknumber";
+static const char *VORBIS_COMMENT_DISC_KEY = "discnumber";
+
+static unsigned int ogg_parseCommentAddToTag(char *comment,
+					     unsigned int itemType,
+					     struct tag ** tag)
+{
+	const char *needle;
+	unsigned int len;
+	switch (itemType) {
+	case TAG_ITEM_TRACK:
+		needle = VORBIS_COMMENT_TRACK_KEY;
+		break;
+	case TAG_ITEM_DISC:
+		needle = VORBIS_COMMENT_DISC_KEY;
+		break;
+	default:
+		needle = mpdTagItemKeys[itemType];
+	}
+	len = strlen(needle);
+
+	if (strncasecmp(comment, needle, len) == 0 && *(comment + len) == '=') {
+		if (!*tag)
+			*tag = tag_new();
+
+		tag_add_item(*tag, itemType, comment + len + 1);
+
+		return 1;
+	}
+
+	return 0;
+}
+
+static struct tag *oggCommentsParse(char **comments)
+{
+	struct tag *tag = NULL;
+
+	while (*comments) {
+		int j;
+		for (j = TAG_NUM_OF_ITEM_TYPES; --j >= 0;) {
+			if (ogg_parseCommentAddToTag(*comments, j, &tag))
+				break;
+		}
+		comments++;
+	}
+
+	return tag;
+}
+
+static void putOggCommentsIntoOutputBuffer(char *streamName,
+					   char **comments)
+{
+	struct tag *tag;
+
+	tag = oggCommentsParse(comments);
+	if (!tag && streamName) {
+		tag = tag_new();
+	}
+	if (!tag)
+		return;
+
+	if (streamName) {
+		tag_clear_items_by_type(tag, TAG_ITEM_NAME);
+		tag_add_item(tag, TAG_ITEM_NAME, streamName);
+	}
+
+	tag_free(tag);
+}
+
+/* public */
+static int oggvorbis_decode(struct decoder * decoder, InputStream * inStream)
+{
+	OggVorbis_File vf;
+	ov_callbacks callbacks;
+	OggCallbackData data;
+	struct audio_format audio_format;
+	int current_section;
+	int prev_section = -1;
+	long ret;
+#define OGG_CHUNK_SIZE 4096
+	char chunk[OGG_CHUNK_SIZE];
+	int chunkpos = 0;
+	long bitRate = 0;
+	long test;
+	ReplayGainInfo *replayGainInfo = NULL;
+	char **comments;
+	const char *errorStr;
+	int initialized = 0;
+
+	data.inStream = inStream;
+	data.decoder = decoder;
+
+	callbacks.read_func = ogg_read_cb;
+	callbacks.seek_func = ogg_seek_cb;
+	callbacks.close_func = ogg_close_cb;
+	callbacks.tell_func = ogg_tell_cb;
+	if ((ret = ov_open_callbacks(&data, &vf, NULL, 0, callbacks)) < 0) {
+		if (decoder_get_command(decoder) != DECODE_COMMAND_NONE)
+			return 0;
+
+		switch (ret) {
+		case OV_EREAD:
+			errorStr = "read error";
+			break;
+		case OV_ENOTVORBIS:
+			errorStr = "not vorbis stream";
+			break;
+		case OV_EVERSION:
+			errorStr = "vorbis version mismatch";
+			break;
+		case OV_EBADHEADER:
+			errorStr = "invalid vorbis header";
+			break;
+		case OV_EFAULT:
+			errorStr = "internal logic error";
+			break;
+		default:
+			errorStr = "unknown error";
+			break;
+		}
+		ERROR("Error decoding Ogg Vorbis stream: %s\n",
+		      errorStr);
+		return -1;
+	}
+	audio_format.bits = 16;
+
+	while (1) {
+		if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
+			double seek_where = decoder_seek_where(decoder);
+			if (0 == ov_time_seek_page(&vf, seek_where)) {
+				decoder_clear(decoder);
+				chunkpos = 0;
+				decoder_command_finished(decoder);
+			} else
+				decoder_seek_error(decoder);
+		}
+		ret = ov_read(&vf, chunk + chunkpos,
+			      OGG_CHUNK_SIZE - chunkpos,
+			      OGG_DECODE_USE_BIGENDIAN, 2, 1, &current_section);
+		if (current_section != prev_section) {
+			/*printf("new song!\n"); */
+			vorbis_info *vi = ov_info(&vf, -1);
+			audio_format.channels = vi->channels;
+			audio_format.sample_rate = vi->rate;
+			if (!initialized) {
+				float total_time = ov_time_total(&vf, -1);
+				if (total_time < 0)
+					total_time = 0;
+				decoder_initialized(decoder, &audio_format,
+						    total_time);
+				initialized = 1;
+			}
+			comments = ov_comment(&vf, -1)->user_comments;
+			putOggCommentsIntoOutputBuffer(inStream->metaName,
+						       comments);
+			ogg_getReplayGainInfo(comments, &replayGainInfo);
+		}
+
+		prev_section = current_section;
+
+		if (ret <= 0) {
+			if (ret == OV_HOLE) /* bad packet */
+				ret = 0;
+			else /* break on EOF or other error */
+				break;
+		}
+
+		chunkpos += ret;
+
+		if (chunkpos >= OGG_CHUNK_SIZE) {
+			if ((test = ov_bitrate_instant(&vf)) > 0) {
+				bitRate = test / 1000;
+			}
+			decoder_data(decoder, inStream,
+				     inStream->seekable,
+				     chunk, chunkpos,
+				     ov_pcm_tell(&vf) / audio_format.sample_rate,
+				     bitRate, replayGainInfo);
+			chunkpos = 0;
+			if (decoder_get_command(decoder) == DECODE_COMMAND_STOP)
+				break;
+		}
+	}
+
+	if (decoder_get_command(decoder) == DECODE_COMMAND_NONE &&
+	    chunkpos > 0) {
+		decoder_data(decoder, NULL, inStream->seekable,
+			     chunk, chunkpos,
+			     ov_time_tell(&vf), bitRate,
+			     replayGainInfo);
+	}
+
+	if (replayGainInfo)
+		freeReplayGainInfo(replayGainInfo);
+
+	ov_clear(&vf);
+
+	decoder_flush(decoder);
+
+	return 0;
+}
+
+static struct tag *oggvorbis_TagDup(char *file)
+{
+	struct tag *ret;
+	FILE *fp;
+	OggVorbis_File vf;
+
+	fp = fopen(file, "r");
+	if (!fp) {
+		DEBUG("oggvorbis_TagDup: Failed to open file: '%s', %s\n",
+		      file, strerror(errno));
+		return NULL;
+	}
+	if (ov_open(fp, &vf, NULL, 0) < 0) {
+		fclose(fp);
+		return NULL;
+	}
+
+	ret = oggCommentsParse(ov_comment(&vf, -1)->user_comments);
+
+	if (!ret)
+		ret = tag_new();
+	ret->time = (int)(ov_time_total(&vf, -1) + 0.5);
+
+	ov_clear(&vf);
+
+	return ret;
+}
+
+static bool oggvorbis_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) == VORBIS;
+}
+
+static const char *oggvorbis_Suffixes[] = { "ogg","oga", NULL };
+static const char *oggvorbis_MimeTypes[] = { "application/ogg",
+					     "audio/x-vorbis+ogg",
+					     "application/x-ogg",
+					     NULL };
+
+struct decoder_plugin oggvorbisPlugin = {
+	.name = "oggvorbis",
+	.try_decode = oggvorbis_try_decode,
+	.stream_decode = oggvorbis_decode,
+	.tag_dup = oggvorbis_TagDup,
+	.stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
+	.suffixes = oggvorbis_Suffixes,
+	.mime_types = oggvorbis_MimeTypes
+};