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authorMax Kellermann <max@duempel.org>2008-10-26 11:29:25 +0100
committerMax Kellermann <max@duempel.org>2008-10-26 11:29:25 +0100
commite11355f47d545fe523b019481415b1347aecd4bd (patch)
treef178cd838be280d0517dc0e5910c36cb96a2a80e /src/decoder/mp4_plugin.c
parentcbc71191f0ed75c5fafad5c387f009c2139a7bed (diff)
downloadmpd-e11355f47d545fe523b019481415b1347aecd4bd.tar.gz
mpd-e11355f47d545fe523b019481415b1347aecd4bd.tar.xz
mpd-e11355f47d545fe523b019481415b1347aecd4bd.zip
renamed src/inputPlugins/ to src/decoder/
These plugins are not input plugins, they are decoder plugins. No CamelCase in the directory name.
Diffstat (limited to 'src/decoder/mp4_plugin.c')
-rw-r--r--src/decoder/mp4_plugin.c423
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,
+};