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-rw-r--r--src/inputPlugins/wavpack_plugin.c422
1 files changed, 422 insertions, 0 deletions
diff --git a/src/inputPlugins/wavpack_plugin.c b/src/inputPlugins/wavpack_plugin.c
new file mode 100644
index 000000000..e27fbde4f
--- /dev/null
+++ b/src/inputPlugins/wavpack_plugin.c
@@ -0,0 +1,422 @@
+/* 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
+ *
+ * WavPack support added by Kodest <kodest at gmail dot com>
+ *
+ * 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_WAVPACK
+
+#include "../utils.h"
+#include "../audio.h"
+#include "../log.h"
+#include "../pcm_utils.h"
+#include "../playerData.h"
+#include "../outputBuffer.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <wavpack/wavpack.h>
+#include <math.h>
+
+#define ERRORLEN 80
+
+static struct {
+ const char *name;
+ int type;
+} tagtypes[] = {
+ { "artist", TAG_ITEM_ARTIST },
+ { "album", TAG_ITEM_ALBUM },
+ { "title", TAG_ITEM_TITLE },
+ { "track", TAG_ITEM_TRACK },
+ { "name", TAG_ITEM_NAME },
+ { "genre", TAG_ITEM_GENRE },
+ { "date", TAG_ITEM_DATE },
+ { "composer", TAG_ITEM_COMPOSER },
+ { "performer", TAG_ITEM_PERFORMER },
+ { "comment", TAG_ITEM_COMMENT },
+ { "disc", TAG_ITEM_DISC },
+ { NULL, 0 }
+};
+
+/* workaround for at least the last push_back_byte */
+static int last_byte = EOF;
+
+/*
+ * This function has been borrowed from the tiny player found on
+ * wavpack.com. Modifications were required because mpd only handles
+ * max 16 bit samples.
+ */
+static void format_samples_int(int Bps, void *buffer, uint32_t samcnt)
+{
+ int32_t temp;
+ uchar *dst = (uchar *)buffer;
+ int32_t *src = (int32_t *)buffer;
+
+ switch (Bps) {
+ case 1:
+ while (samcnt--)
+ *dst++ = *src++;
+ break;
+ case 2:
+ while (samcnt--) {
+ *dst++ = (uchar)(temp = *src++);
+ *dst++ = (uchar)(temp >> 8);
+ }
+ break;
+ case 3:
+ /* downscale to 16 bits */
+ while (samcnt--) {
+ temp = *src++;
+ *dst++ = (uchar)(temp >> 8);
+ *dst++ = (uchar)(temp >> 16);
+ }
+ break;
+ case 4:
+ /* downscale to 16 bits */
+ while (samcnt--) {
+ temp = *src++;
+ *dst++ = (uchar)(temp >> 16);
+ *dst++ = (uchar)(temp >> 24);
+ }
+ break;
+ }
+}
+
+/*
+ * This function converts floating point sample data to 16 bit integer.
+ */
+static void format_samples_float(int Bps, void *buffer, uint32_t samcnt)
+{
+ int16_t *dst = (int16_t *)buffer;
+ float *src = (float *)buffer;
+
+ while (samcnt--) {
+ *dst++ = (int16_t)(*src++);
+ }
+}
+
+/*
+ * This does the main decoding thing.
+ * Requires an already opened WavpackContext.
+ */
+static void wavpack_decode(OutputBuffer *cb, DecoderControl *dc,
+ WavpackContext *wpc, int canseek)
+{
+ void (*format_samples)(int Bps, void *buffer, uint32_t samcnt);
+ char chunk[CHUNK_SIZE];
+ float time;
+ int samplesreq, samplesgot;
+ int allsamples;
+ int position, outsamplesize;
+ int Bps;
+
+ dc->audioFormat.sampleRate = WavpackGetSampleRate(wpc);
+ dc->audioFormat.channels = WavpackGetReducedChannels(wpc);
+ dc->audioFormat.bits = WavpackGetBitsPerSample(wpc);
+
+ if (dc->audioFormat.bits > 16)
+ dc->audioFormat.bits = 16;
+
+ if ((WavpackGetMode(wpc) & MODE_FLOAT) == MODE_FLOAT)
+ format_samples = format_samples_float;
+ else
+ format_samples = format_samples_int;
+
+ allsamples = WavpackGetNumSamples(wpc);
+ Bps = WavpackGetBytesPerSample(wpc);
+
+ outsamplesize = Bps;
+ if (outsamplesize > 2)
+ outsamplesize = 2;
+ outsamplesize *= dc->audioFormat.channels;
+
+ samplesreq = sizeof(chunk) / (4 * dc->audioFormat.channels);
+
+ getOutputAudioFormat(&(dc->audioFormat), &(cb->audioFormat));
+
+ dc->totalTime = (float)allsamples / dc->audioFormat.sampleRate;
+ dc->state = DECODE_STATE_DECODE;
+
+ position = 0;
+
+ do {
+ if (dc->seek) {
+ if (canseek) {
+ int where;
+
+ clearOutputBuffer(cb);
+
+ where = dc->seekWhere *
+ dc->audioFormat.sampleRate;
+ if (WavpackSeekSample(wpc, where))
+ position = where;
+ else
+ dc->seekError = 1;
+ } else {
+ dc->seekError = 1;
+ }
+
+ dc->seek = 0;
+ }
+
+ if (dc->stop)
+ break;
+
+ samplesgot = WavpackUnpackSamples(wpc,
+ (int32_t *)chunk, samplesreq);
+ if (samplesgot > 0) {
+ int bitrate = (int)(WavpackGetInstantBitrate(wpc) /
+ 1000 + 0.5);
+ position += samplesgot;
+ time = (float)position / dc->audioFormat.sampleRate;
+
+ format_samples(Bps, chunk,
+ samplesgot * dc->audioFormat.channels);
+
+ sendDataToOutputBuffer(cb, NULL, dc, 0, chunk,
+ samplesgot * outsamplesize,
+ time, bitrate, NULL);
+ }
+ } while (samplesgot == samplesreq);
+
+ flushOutputBuffer(cb);
+
+ dc->state = DECODE_STATE_STOP;
+ dc->stop = 0;
+}
+
+/*
+ * Reads metainfo from the specified file.
+ */
+static MpdTag *wavpack_tagdup(char *fname)
+{
+ WavpackContext *wpc;
+ MpdTag *tag;
+ char error[ERRORLEN];
+ char *s;
+ int ssize;
+ int i, j;
+
+ wpc = WavpackOpenFileInput(fname, error, OPEN_TAGS, 0);
+ if (wpc == NULL) {
+ ERROR("failed to open WavPack file \"%s\": %s\n", fname, error);
+ return NULL;
+ }
+
+ tag = newMpdTag();
+ if (tag == NULL) {
+ ERROR("failed to newMpdTag()\n");
+ return NULL;
+ }
+
+ tag->time =
+ (float)WavpackGetNumSamples(wpc) / WavpackGetSampleRate(wpc);
+
+ ssize = 0;
+ s = NULL;
+
+ for (i = 0; tagtypes[i].name != NULL; ++i) {
+ j = WavpackGetTagItem(wpc, tagtypes[i].name, NULL, 0);
+ if (j > 0) {
+ ++j;
+
+ if (s == NULL) {
+ s = xmalloc(j);
+ if (s == NULL) break;
+ ssize = j;
+ } else if (j > ssize) {
+ char *t = (char *)xrealloc(s, j);
+ if (t == NULL) break;
+ ssize = j;
+ s = t;
+ }
+
+ WavpackGetTagItem(wpc, tagtypes[i].name, s, j);
+ addItemToMpdTag(tag, tagtypes[i].type, s);
+ }
+ }
+
+ if (s != NULL)
+ free(s);
+
+ WavpackCloseFile(wpc);
+
+ return tag;
+}
+
+/*
+ * mpd InputStream <=> WavpackStreamReader wrapper callbacks
+ */
+
+static int32_t read_bytes(void *id, void *data, int32_t bcount)
+{
+ uint8_t *buf = (uint8_t *)data;
+ int32_t i = 0;
+
+ if (last_byte != EOF) {
+ *buf++ = last_byte;
+ last_byte = EOF;
+ --bcount;
+ ++i;
+ }
+ return i + readFromInputStream((InputStream *)id, buf, 1, bcount);
+}
+
+static uint32_t get_pos(void *id)
+{
+ return ((InputStream *)id)->offset;
+}
+
+static int set_pos_abs(void *id, uint32_t pos)
+{
+ return seekInputStream((InputStream *)id, pos, SEEK_SET);
+}
+
+static int set_pos_rel(void *id, int32_t delta, int mode)
+{
+ return seekInputStream((InputStream *)id, delta, mode);
+}
+
+static int push_back_byte(void *id, int c)
+{
+ last_byte = c;
+ return 1;
+}
+
+static uint32_t get_length(void *id)
+{
+ return ((InputStream *)id)->size;
+}
+
+static int can_seek(void *id)
+{
+ return (seekInputStream((InputStream *)id, 0, SEEK_SET) != -1);
+}
+
+static WavpackStreamReader mpd_is_reader = {
+ .read_bytes = read_bytes,
+ .get_pos = get_pos,
+ .set_pos_abs = set_pos_abs,
+ .set_pos_rel = set_pos_rel,
+ .push_back_byte = push_back_byte,
+ .get_length = get_length,
+ .can_seek = can_seek,
+ .write_bytes = NULL /* no need to write edited tags */
+};
+
+/*
+ * Tries to decode the specified stream, and gives true if managed to do it.
+ */
+static unsigned int wavpack_trydecode(InputStream *is)
+{
+ char error[ERRORLEN];
+ WavpackContext *wpc;
+
+ wpc = WavpackOpenFileInputEx(&mpd_is_reader, (void *)is, NULL, error,
+ OPEN_STREAMING, 0);
+ if (wpc == NULL)
+ return 0;
+
+ WavpackCloseFile(wpc);
+ /* Seek it back in order to play from the first byte. */
+ seekInputStream(is, 0, SEEK_SET);
+
+ return 1;
+}
+
+/*
+ * Decodes a stream.
+ * We cannot handle wvc files this way, use the wavpack_filedecode for that.
+ */
+static int wavpack_streamdecode(OutputBuffer *cb, DecoderControl *dc,
+ InputStream *is)
+{
+ char error[ERRORLEN];
+ WavpackContext *wpc;
+
+ /*
+ * wavpack_streamdecode is unable to use wvc :-(
+ * If we know the original stream url, we would find out the wvc url...
+ * This would require InputStream to store that.
+ */
+
+ wpc = WavpackOpenFileInputEx(&mpd_is_reader, (void *)is, NULL, error,
+ OPEN_2CH_MAX | OPEN_NORMALIZE, 15);
+ if (wpc == NULL) {
+ ERROR("failed to open WavPack stream: %s\n", error);
+ return -1;
+ }
+
+ wavpack_decode(cb, dc, wpc, can_seek(is));
+
+ WavpackCloseFile(wpc);
+ closeInputStream(is); /* calling side doesn't do this in mpd 0.13.0 */
+
+ return 0;
+}
+
+/*
+ * Decodes a file. This has the goods on wavpack_streamdecode that this
+ * can handle wvc files.
+ */
+static int wavpack_filedecode(OutputBuffer *cb, DecoderControl *dc, char *fname)
+{
+ char error[ERRORLEN];
+ WavpackContext *wpc;
+
+ wpc = WavpackOpenFileInput(fname, error,
+ OPEN_WVC | OPEN_2CH_MAX | OPEN_NORMALIZE,
+ 15);
+ if (wpc == NULL) {
+ ERROR("failed to open WavPack file \"%s\": %s\n", fname, error);
+ return -1;
+ }
+
+ wavpack_decode(cb, dc, wpc, 1);
+
+ WavpackCloseFile(wpc);
+
+ return 0;
+}
+
+static char *wavpackSuffixes[] = { "wv", NULL };
+static char *wavpackMimeTypes[] = { "audio/x-wavpack", NULL };
+
+InputPlugin wavpackPlugin = {
+ "wavpack",
+ NULL,
+ NULL,
+ wavpack_trydecode,
+ wavpack_streamdecode,
+ wavpack_filedecode, /* provides more functionality! (wvc) */
+ wavpack_tagdup,
+ INPUT_PLUGIN_STREAM_FILE | INPUT_PLUGIN_STREAM_URL,
+ wavpackSuffixes,
+ wavpackMimeTypes
+};
+
+#else /* !HAVE_WAVPACK */
+
+InputPlugin wavpackPlugin;
+
+#endif /* !HAVE_WAVPACK */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 09:18:25 +0000