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, 423 insertions, 0 deletions

diff --git a/src/decoder/mp4_plugin.c b/src/decoder/mp4_plugin.c
new file mode 100644
index 000000000..4a613744e
--- /dev/null
+++ b/src/decoder/mp4_plugin.c
@@ -0,0 +1,423 @@
+/* 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 "../decoder_api.h"
+#include "../utils.h"
+#include "../log.h"
+
+#include "mp4ff.h"
+
+#include <limits.h>
+#include <faad.h>
+/* all code here is either based on or copied from FAAD2's frontend code */
+
+static int mp4_getAACTrack(mp4ff_t * infile)
+{
+	/* find AAC track */
+	int i, rc;
+	int numTracks = mp4ff_total_tracks(infile);
+
+	for (i = 0; i < numTracks; i++) {
+		unsigned char *buff = NULL;
+		unsigned int buff_size = 0;
+#ifdef HAVE_MP4AUDIOSPECIFICCONFIG
+		mp4AudioSpecificConfig mp4ASC;
+#else
+		unsigned long dummy1_32;
+		unsigned char dummy2_8, dummy3_8, dummy4_8, dummy5_8, dummy6_8,
+		    dummy7_8, dummy8_8;
+#endif
+
+		mp4ff_get_decoder_config(infile, i, &buff, &buff_size);
+
+		if (buff) {
+#ifdef HAVE_MP4AUDIOSPECIFICCONFIG
+			rc = AudioSpecificConfig(buff, buff_size, &mp4ASC);
+#else
+			rc = AudioSpecificConfig(buff, &dummy1_32, &dummy2_8,
+						 &dummy3_8, &dummy4_8,
+						 &dummy5_8, &dummy6_8,
+						 &dummy7_8, &dummy8_8);
+#endif
+			free(buff);
+			if (rc < 0)
+				continue;
+			return i;
+		}
+	}
+
+	/* can't decode this */
+	return -1;
+}
+
+static uint32_t mp4_inputStreamReadCallback(void *inStream, void *buffer,
+					    uint32_t length)
+{
+	return readFromInputStream((InputStream *) inStream, buffer, length);
+}
+
+static uint32_t mp4_inputStreamSeekCallback(void *inStream, uint64_t position)
+{
+	return seekInputStream((InputStream *) inStream, position, SEEK_SET);
+}
+
+static int mp4_decode(struct decoder * mpd_decoder, InputStream * inStream)
+{
+	mp4ff_t *mp4fh;
+	mp4ff_callback_t *mp4cb;
+	int32_t track;
+	float file_time, total_time;
+	int32_t scale;
+	faacDecHandle decoder;
+	faacDecFrameInfo frameInfo;
+	faacDecConfigurationPtr config;
+	struct audio_format audio_format;
+	unsigned char *mp4Buffer;
+	unsigned int mp4BufferSize;
+	uint32_t sample_rate;
+	unsigned char channels;
+	long sampleId;
+	long numSamples;
+	long dur;
+	unsigned int sampleCount;
+	char *sampleBuffer;
+	size_t sampleBufferLen;
+	unsigned int initial = 1;
+	float *seekTable;
+	long seekTableEnd = -1;
+	bool seekPositionFound = false;
+	long offset;
+	uint16_t bitRate = 0;
+	bool seeking = false;
+	double seek_where = 0;
+	bool initialized = false;
+
+	mp4cb = xmalloc(sizeof(mp4ff_callback_t));
+	mp4cb->read = mp4_inputStreamReadCallback;
+	mp4cb->seek = mp4_inputStreamSeekCallback;
+	mp4cb->user_data = inStream;
+
+	mp4fh = mp4ff_open_read(mp4cb);
+	if (!mp4fh) {
+		ERROR("Input does not appear to be a mp4 stream.\n");
+		free(mp4cb);
+		return -1;
+	}
+
+	track = mp4_getAACTrack(mp4fh);
+	if (track < 0) {
+		ERROR("No AAC track found in mp4 stream.\n");
+		mp4ff_close(mp4fh);
+		free(mp4cb);
+		return -1;
+	}
+
+	decoder = faacDecOpen();
+
+	config = faacDecGetCurrentConfiguration(decoder);
+	config->outputFormat = FAAD_FMT_16BIT;
+#ifdef HAVE_FAACDECCONFIGURATION_DOWNMATRIX
+	config->downMatrix = 1;
+#endif
+#ifdef HAVE_FAACDECCONFIGURATION_DONTUPSAMPLEIMPLICITSBR
+	config->dontUpSampleImplicitSBR = 0;
+#endif
+	faacDecSetConfiguration(decoder, config);
+
+	audio_format.bits = 16;
+
+	mp4Buffer = NULL;
+	mp4BufferSize = 0;
+	mp4ff_get_decoder_config(mp4fh, track, &mp4Buffer, &mp4BufferSize);
+
+	if (faacDecInit2
+	    (decoder, mp4Buffer, mp4BufferSize, &sample_rate, &channels) < 0) {
+		ERROR("Error not a AAC stream.\n");
+		faacDecClose(decoder);
+		mp4ff_close(mp4fh);
+		free(mp4cb);
+		return -1;
+	}
+
+	audio_format.sample_rate = sample_rate;
+	audio_format.channels = channels;
+	file_time = mp4ff_get_track_duration_use_offsets(mp4fh, track);
+	scale = mp4ff_time_scale(mp4fh, track);
+
+	if (mp4Buffer)
+		free(mp4Buffer);
+
+	if (scale < 0) {
+		ERROR("Error getting audio format of mp4 AAC track.\n");
+		faacDecClose(decoder);
+		mp4ff_close(mp4fh);
+		free(mp4cb);
+		return -1;
+	}
+	total_time = ((float)file_time) / scale;
+
+	numSamples = mp4ff_num_samples(mp4fh, track);
+	if (numSamples > (long)(INT_MAX / sizeof(float))) {
+		 ERROR("Integer overflow.\n");
+		 faacDecClose(decoder);
+		 mp4ff_close(mp4fh);
+		 free(mp4cb);
+		 return -1;
+	}
+
+	file_time = 0.0;
+
+	seekTable = xmalloc(sizeof(float) * numSamples);
+
+	for (sampleId = 0; sampleId < numSamples; sampleId++) {
+		if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) {
+			seeking = true;
+			seek_where = decoder_seek_where(mpd_decoder);
+		}
+
+		if (seeking && seekTableEnd > 1 &&
+		    seekTable[seekTableEnd] >= seek_where) {
+			int i = 2;
+			while (seekTable[i] < seek_where)
+				i++;
+			sampleId = i - 1;
+			file_time = seekTable[sampleId];
+		}
+
+		dur = mp4ff_get_sample_duration(mp4fh, track, sampleId);
+		offset = mp4ff_get_sample_offset(mp4fh, track, sampleId);
+
+		if (sampleId > seekTableEnd) {
+			seekTable[sampleId] = file_time;
+			seekTableEnd = sampleId;
+		}
+
+		if (sampleId == 0)
+			dur = 0;
+		if (offset > dur)
+			dur = 0;
+		else
+			dur -= offset;
+		file_time += ((float)dur) / scale;
+
+		if (seeking && file_time > seek_where)
+			seekPositionFound = true;
+
+		if (seeking && seekPositionFound) {
+			seekPositionFound = false;
+			decoder_clear(mpd_decoder);
+			seeking = 0;
+			decoder_command_finished(mpd_decoder);
+		}
+
+		if (seeking)
+			continue;
+
+		if (mp4ff_read_sample(mp4fh, track, sampleId, &mp4Buffer,
+				      &mp4BufferSize) == 0)
+			break;
+
+#ifdef HAVE_FAAD_BUFLEN_FUNCS
+		sampleBuffer = faacDecDecode(decoder, &frameInfo, mp4Buffer,
+					     mp4BufferSize);
+#else
+		sampleBuffer = faacDecDecode(decoder, &frameInfo, mp4Buffer);
+#endif
+
+		if (mp4Buffer)
+			free(mp4Buffer);
+		if (frameInfo.error > 0) {
+			ERROR("faad2 error: %s\n",
+			      faacDecGetErrorMessage(frameInfo.error));
+			break;
+		}
+
+		if (!initialized) {
+			channels = frameInfo.channels;
+#ifdef HAVE_FAACDECFRAMEINFO_SAMPLERATE
+			scale = frameInfo.samplerate;
+#endif
+			audio_format.sample_rate = scale;
+			audio_format.channels = frameInfo.channels;
+			decoder_initialized(mpd_decoder, &audio_format,
+					    total_time);
+			initialized = true;
+		}
+
+		if (channels * (unsigned long)(dur + offset) > frameInfo.samples) {
+			dur = frameInfo.samples / channels;
+			offset = 0;
+		}
+
+		sampleCount = (unsigned long)(dur * channels);
+
+		if (sampleCount > 0) {
+			initial = 0;
+			bitRate = frameInfo.bytesconsumed * 8.0 *
+			    frameInfo.channels * scale /
+			    frameInfo.samples / 1000 + 0.5;
+		}
+
+		sampleBufferLen = sampleCount * 2;
+
+		sampleBuffer += offset * channels * 2;
+
+		decoder_data(mpd_decoder, inStream, 1, sampleBuffer,
+			     sampleBufferLen, file_time,
+			     bitRate, NULL);
+		if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_STOP)
+			break;
+	}
+
+	free(seekTable);
+	faacDecClose(decoder);
+	mp4ff_close(mp4fh);
+	free(mp4cb);
+
+	if (!initialized)
+		return -1;
+
+	if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK && seeking) {
+		decoder_clear(mpd_decoder);
+		decoder_command_finished(mpd_decoder);
+	}
+	decoder_flush(mpd_decoder);
+
+	return 0;
+}
+
+static struct tag *mp4DataDup(char *file, int *mp4MetadataFound)
+{
+	struct tag *ret = NULL;
+	InputStream inStream;
+	mp4ff_t *mp4fh;
+	mp4ff_callback_t *callback;
+	int32_t track;
+	int32_t file_time;
+	int32_t scale;
+	int i;
+
+	*mp4MetadataFound = 0;
+
+	if (openInputStream(&inStream, file) < 0) {
+		DEBUG("mp4DataDup: Failed to open file: %s\n", file);
+		return NULL;
+	}
+
+	callback = xmalloc(sizeof(mp4ff_callback_t));
+	callback->read = mp4_inputStreamReadCallback;
+	callback->seek = mp4_inputStreamSeekCallback;
+	callback->user_data = &inStream;
+
+	mp4fh = mp4ff_open_read(callback);
+	if (!mp4fh) {
+		free(callback);
+		closeInputStream(&inStream);
+		return NULL;
+	}
+
+	track = mp4_getAACTrack(mp4fh);
+	if (track < 0) {
+		mp4ff_close(mp4fh);
+		closeInputStream(&inStream);
+		free(callback);
+		return NULL;
+	}
+
+	ret = tag_new();
+	file_time = mp4ff_get_track_duration_use_offsets(mp4fh, track);
+	scale = mp4ff_time_scale(mp4fh, track);
+	if (scale < 0) {
+		mp4ff_close(mp4fh);
+		closeInputStream(&inStream);
+		free(callback);
+		tag_free(ret);
+		return NULL;
+	}
+	ret->time = ((float)file_time) / scale + 0.5;
+
+	for (i = 0; i < mp4ff_meta_get_num_items(mp4fh); i++) {
+		char *item;
+		char *value;
+
+		mp4ff_meta_get_by_index(mp4fh, i, &item, &value);
+
+		if (0 == strcasecmp("artist", item)) {
+			tag_add_item(ret, TAG_ITEM_ARTIST, value);
+			*mp4MetadataFound = 1;
+		} else if (0 == strcasecmp("title", item)) {
+			tag_add_item(ret, TAG_ITEM_TITLE, value);
+			*mp4MetadataFound = 1;
+		} else if (0 == strcasecmp("album", item)) {
+			tag_add_item(ret, TAG_ITEM_ALBUM, value);
+			*mp4MetadataFound = 1;
+		} else if (0 == strcasecmp("track", item)) {
+			tag_add_item(ret, TAG_ITEM_TRACK, value);
+			*mp4MetadataFound = 1;
+		} else if (0 == strcasecmp("disc", item)) {	/* Is that the correct id? */
+			tag_add_item(ret, TAG_ITEM_DISC, value);
+			*mp4MetadataFound = 1;
+		} else if (0 == strcasecmp("genre", item)) {
+			tag_add_item(ret, TAG_ITEM_GENRE, value);
+			*mp4MetadataFound = 1;
+		} else if (0 == strcasecmp("date", item)) {
+			tag_add_item(ret, TAG_ITEM_DATE, value);
+			*mp4MetadataFound = 1;
+		}
+
+		free(item);
+		free(value);
+	}
+
+	mp4ff_close(mp4fh);
+	closeInputStream(&inStream);
+
+	return ret;
+}
+
+static struct tag *mp4TagDup(char *file)
+{
+	struct tag *ret = NULL;
+	int mp4MetadataFound = 0;
+
+	ret = mp4DataDup(file, &mp4MetadataFound);
+	if (!ret)
+		return NULL;
+	if (!mp4MetadataFound) {
+		struct tag *temp = tag_id3_load(file);
+		if (temp) {
+			temp->time = ret->time;
+			tag_free(ret);
+			ret = temp;
+		}
+	}
+
+	return ret;
+}
+
+static const char *mp4_suffixes[] = { "m4a", "mp4", NULL };
+static const char *mp4_mimeTypes[] = { "audio/mp4", "audio/m4a", NULL };
+
+struct decoder_plugin mp4Plugin = {
+	.name = "mp4",
+	.stream_decode = mp4_decode,
+	.tag_dup = mp4TagDup,
+	.stream_types = INPUT_PLUGIN_STREAM_FILE | INPUT_PLUGIN_STREAM_URL,
+	.suffixes = mp4_suffixes,
+	.mime_types = mp4_mimeTypes,
+};