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-rw-r--r--trunk/src/inputPlugins/mpc_plugin.c359
1 files changed, 359 insertions, 0 deletions
diff --git a/trunk/src/inputPlugins/mpc_plugin.c b/trunk/src/inputPlugins/mpc_plugin.c
new file mode 100644
index 000000000..885f6cfc9
--- /dev/null
+++ b/trunk/src/inputPlugins/mpc_plugin.c
@@ -0,0 +1,359 @@
+/* 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 "../inputPlugin.h"
+
+#ifdef HAVE_MPCDEC
+
+#include "../utils.h"
+#include "../audio.h"
+#include "../log.h"
+#include "../pcm_utils.h"
+#include "../inputStream.h"
+#include "../outputBuffer.h"
+#include "../replayGain.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <mpcdec/mpcdec.h>
+#include <errno.h>
+#include <math.h>
+
+typedef struct _MpcCallbackData {
+ InputStream *inStream;
+ DecoderControl *dc;
+} MpcCallbackData;
+
+static mpc_int32_t mpc_read_cb(void *vdata, void *ptr, mpc_int32_t size)
+{
+ mpc_int32_t ret = 0;
+ MpcCallbackData *data = (MpcCallbackData *) vdata;
+
+ while (1) {
+ ret = readFromInputStream(data->inStream, ptr, 1, size);
+ if (ret == 0 && !inputStreamAtEOF(data->inStream) &&
+ (data->dc && !data->dc->stop)) {
+ my_usleep(10000);
+ } else
+ break;
+ }
+
+ return ret;
+}
+
+static mpc_bool_t mpc_seek_cb(void *vdata, mpc_int32_t offset)
+{
+ MpcCallbackData *data = (MpcCallbackData *) vdata;
+
+ return seekInputStream(data->inStream, offset, SEEK_SET) < 0 ? 0 : 1;
+}
+
+static mpc_int32_t mpc_tell_cb(void *vdata)
+{
+ MpcCallbackData *data = (MpcCallbackData *) vdata;
+
+ return (long)(data->inStream->offset);
+}
+
+static mpc_bool_t mpc_canseek_cb(void *vdata)
+{
+ MpcCallbackData *data = (MpcCallbackData *) vdata;
+
+ return data->inStream->seekable;
+}
+
+static mpc_int32_t mpc_getsize_cb(void *vdata)
+{
+ MpcCallbackData *data = (MpcCallbackData *) vdata;
+
+ return data->inStream->size;
+}
+
+/* this _looks_ performance-critical, don't de-inline -- eric */
+static inline mpd_sint16 convertSample(MPC_SAMPLE_FORMAT sample)
+{
+ /* only doing 16-bit audio for now */
+ mpd_sint32 val;
+
+ const int clip_min = -1 << (16 - 1);
+ const int clip_max = (1 << (16 - 1)) - 1;
+
+#ifdef MPC_FIXED_POINT
+ const int shift = 16 - MPC_FIXED_POINT_SCALE_SHIFT;
+
+ if (sample > 0) {
+ sample <<= shift;
+ } else if (shift < 0) {
+ sample >>= -shift;
+ }
+ val = sample;
+#else
+ const int float_scale = 1 << (16 - 1);
+
+ val = sample * float_scale;
+#endif
+
+ if (val < clip_min)
+ val = clip_min;
+ else if (val > clip_max)
+ val = clip_max;
+
+ return val;
+}
+
+static int mpc_decode(OutputBuffer * cb, DecoderControl * dc,
+ InputStream * inStream)
+{
+ mpc_decoder decoder;
+ mpc_reader reader;
+ mpc_streaminfo info;
+
+ MpcCallbackData data;
+
+ MPC_SAMPLE_FORMAT sample_buffer[MPC_DECODER_BUFFER_LENGTH];
+
+ int eof = 0;
+ long ret;
+#define MPC_CHUNK_SIZE 4096
+ char chunk[MPC_CHUNK_SIZE];
+ int chunkpos = 0;
+ long bitRate = 0;
+ mpd_sint16 *s16 = (mpd_sint16 *) chunk;
+ unsigned long samplePos = 0;
+ mpc_uint32_t vbrUpdateAcc;
+ mpc_uint32_t vbrUpdateBits;
+ float time;
+ int i;
+ ReplayGainInfo *replayGainInfo = NULL;
+
+ data.inStream = inStream;
+ data.dc = dc;
+
+ reader.read = mpc_read_cb;
+ reader.seek = mpc_seek_cb;
+ reader.tell = mpc_tell_cb;
+ reader.get_size = mpc_getsize_cb;
+ reader.canseek = mpc_canseek_cb;
+ reader.data = &data;
+
+ mpc_streaminfo_init(&info);
+
+ if ((ret = mpc_streaminfo_read(&info, &reader)) != ERROR_CODE_OK) {
+ closeInputStream(inStream);
+ if (!dc->stop) {
+ ERROR("Not a valid musepack stream");
+ return -1;
+ } else {
+ dc->state = DECODE_STATE_STOP;
+ dc->stop = 0;
+ }
+ return 0;
+ }
+
+ mpc_decoder_setup(&decoder, &reader);
+
+ if (!mpc_decoder_initialize(&decoder, &info)) {
+ closeInputStream(inStream);
+ if (!dc->stop) {
+ ERROR("Not a valid musepack stream");
+ } else {
+ dc->state = DECODE_STATE_STOP;
+ dc->stop = 0;
+ }
+ }
+
+ dc->totalTime = mpc_streaminfo_get_length(&info);
+
+ dc->audioFormat.bits = 16;
+ dc->audioFormat.channels = info.channels;
+ dc->audioFormat.sampleRate = info.sample_freq;
+
+ getOutputAudioFormat(&(dc->audioFormat), &(cb->audioFormat));
+
+ replayGainInfo = newReplayGainInfo();
+ replayGainInfo->albumGain = info.gain_album * 0.01;
+ replayGainInfo->albumPeak = info.peak_album / 32767.0;
+ replayGainInfo->trackGain = info.gain_title * 0.01;
+ replayGainInfo->trackPeak = info.peak_title / 32767.0;
+
+ dc->state = DECODE_STATE_DECODE;
+
+ while (!eof) {
+ if (dc->seek) {
+ samplePos = dc->seekWhere * dc->audioFormat.sampleRate;
+ if (mpc_decoder_seek_sample(&decoder, samplePos)) {
+ clearOutputBuffer(cb);
+ s16 = (mpd_sint16 *) chunk;
+ chunkpos = 0;
+ } else
+ dc->seekError = 1;
+ dc->seek = 0;
+ }
+
+ vbrUpdateAcc = 0;
+ vbrUpdateBits = 0;
+ ret = mpc_decoder_decode(&decoder, sample_buffer,
+ &vbrUpdateAcc, &vbrUpdateBits);
+
+ if (ret <= 0 || dc->stop) {
+ eof = 1;
+ break;
+ }
+
+ samplePos += ret;
+
+ /* ret is in samples, and we have stereo */
+ ret *= 2;
+
+ for (i = 0; i < ret; i++) {
+ /* 16 bit audio again */
+ *s16 = convertSample(sample_buffer[i]);
+ chunkpos += 2;
+ s16++;
+
+ if (chunkpos >= MPC_CHUNK_SIZE) {
+ time = ((float)samplePos) /
+ dc->audioFormat.sampleRate;
+
+ bitRate = vbrUpdateBits *
+ dc->audioFormat.sampleRate / 1152 / 1000;
+
+ sendDataToOutputBuffer(cb, inStream, dc,
+ inStream->seekable,
+ chunk, chunkpos,
+ time,
+ bitRate, replayGainInfo);
+
+ chunkpos = 0;
+ s16 = (mpd_sint16 *) chunk;
+ if (dc->stop) {
+ eof = 1;
+ break;
+ }
+ }
+ }
+ }
+
+ if (!dc->stop && chunkpos > 0) {
+ time = ((float)samplePos) / dc->audioFormat.sampleRate;
+
+ bitRate =
+ vbrUpdateBits * dc->audioFormat.sampleRate / 1152 / 1000;
+
+ sendDataToOutputBuffer(cb, NULL, dc, inStream->seekable,
+ chunk, chunkpos, time, bitRate,
+ replayGainInfo);
+ }
+
+ closeInputStream(inStream);
+
+ flushOutputBuffer(cb);
+
+ freeReplayGainInfo(replayGainInfo);
+
+ if (dc->stop) {
+ dc->state = DECODE_STATE_STOP;
+ dc->stop = 0;
+ } else {
+ dc->state = DECODE_STATE_STOP;
+ }
+
+ return 0;
+}
+
+static float mpcGetTime(char *file)
+{
+ InputStream inStream;
+ float time = -1;
+
+ mpc_reader reader;
+ mpc_streaminfo info;
+ MpcCallbackData data;
+
+ data.inStream = &inStream;
+ data.dc = NULL;
+
+ reader.read = mpc_read_cb;
+ reader.seek = mpc_seek_cb;
+ reader.tell = mpc_tell_cb;
+ reader.get_size = mpc_getsize_cb;
+ reader.canseek = mpc_canseek_cb;
+ reader.data = &data;
+
+ mpc_streaminfo_init(&info);
+
+ if (openInputStream(&inStream, file) < 0) {
+ DEBUG("mpcGetTime: Failed to open file: %s\n", file);
+ return -1;
+ }
+
+ if (mpc_streaminfo_read(&info, &reader) != ERROR_CODE_OK) {
+ closeInputStream(&inStream);
+ return -1;
+ }
+
+ time = mpc_streaminfo_get_length(&info);
+
+ closeInputStream(&inStream);
+
+ return time;
+}
+
+static MpdTag *mpcTagDup(char *file)
+{
+ MpdTag *ret = NULL;
+ float time = mpcGetTime(file);
+
+ if (time < 0) {
+ DEBUG("mpcTagDup: Failed to get Songlength of file: %s\n",
+ file);
+ return NULL;
+ }
+
+ ret = apeDup(file);
+ if (!ret)
+ ret = id3Dup(file);
+ if (!ret)
+ ret = newMpdTag();
+ ret->time = time;
+
+ return ret;
+}
+
+static char *mpcSuffixes[] = { "mpc", NULL };
+
+InputPlugin mpcPlugin = {
+ "mpc",
+ NULL,
+ NULL,
+ NULL,
+ mpc_decode,
+ NULL,
+ mpcTagDup,
+ INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
+ mpcSuffixes,
+ NULL
+};
+
+#else
+
+InputPlugin mpcPlugin;
+
+#endif /* HAVE_MPCDEC */
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