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-rw-r--r--src/decoder/wavpack_plugin.c574
1 files changed, 574 insertions, 0 deletions
diff --git a/src/decoder/wavpack_plugin.c b/src/decoder/wavpack_plugin.c
new file mode 100644
index 000000000..14b7e5f69
--- /dev/null
+++ b/src/decoder/wavpack_plugin.c
@@ -0,0 +1,574 @@
+/* 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 Laszlo Ashin <kodest@gmail.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 "../decoder_api.h"
+#include "../utils.h"
+#include "../log.h"
+#include "../path.h"
+
+#include <wavpack/wavpack.h>
+
+/* pick 1020 since its devisible for 8,16,24, and 32-bit audio */
+#define CHUNK_SIZE 1020
+
+#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 }
+};
+
+/*
+ * 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--) {
+ temp = *src++;
+#ifdef WORDS_BIGENDIAN
+ *dst++ = (uchar)(temp >> 8);
+ *dst++ = (uchar)(temp);
+#else
+ *dst++ = (uchar)(temp);
+ *dst++ = (uchar)(temp >> 8);
+#endif
+ }
+ break;
+ case 3:
+ /* downscale to 16 bits */
+ while (samcnt--) {
+ temp = *src++;
+#ifdef WORDS_BIGENDIAN
+ *dst++ = (uchar)(temp >> 16);
+ *dst++ = (uchar)(temp >> 8);
+#else
+ *dst++ = (uchar)(temp >> 8);
+ *dst++ = (uchar)(temp >> 16);
+#endif
+ }
+ break;
+ case 4:
+ /* downscale to 16 bits */
+ while (samcnt--) {
+ temp = *src++;
+#ifdef WORDS_BIGENDIAN
+ *dst++ = (uchar)(temp >> 24);
+ *dst++ = (uchar)(temp >> 16);
+
+#else
+ *dst++ = (uchar)(temp >> 16);
+ *dst++ = (uchar)(temp >> 24);
+#endif
+ }
+ break;
+ }
+}
+
+/*
+ * This function converts floating point sample data to 16 bit integer.
+ */
+static void format_samples_float(mpd_unused 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(struct decoder * decoder,
+ WavpackContext *wpc, int canseek,
+ ReplayGainInfo *replayGainInfo)
+{
+ struct audio_format audio_format;
+ void (*format_samples)(int Bps, void *buffer, uint32_t samcnt);
+ char chunk[CHUNK_SIZE];
+ float file_time;
+ int samplesreq, samplesgot;
+ int allsamples;
+ int position, outsamplesize;
+ int Bps;
+
+ audio_format.sample_rate = WavpackGetSampleRate(wpc);
+ audio_format.channels = WavpackGetReducedChannels(wpc);
+ audio_format.bits = WavpackGetBitsPerSample(wpc);
+
+ if (audio_format.bits > 16)
+ audio_format.bits = 16;
+
+ if ((WavpackGetMode(wpc) & MODE_FLOAT) == MODE_FLOAT)
+ format_samples = format_samples_float;
+ else
+ format_samples = format_samples_int;
+/*
+ if ((WavpackGetMode(wpc) & MODE_WVC) == MODE_WVC)
+ ERROR("decoding WITH wvc!!!\n");
+ else
+ ERROR("decoding without wvc\n");
+*/
+ allsamples = WavpackGetNumSamples(wpc);
+ Bps = WavpackGetBytesPerSample(wpc);
+
+ outsamplesize = Bps;
+ if (outsamplesize > 2)
+ outsamplesize = 2;
+ outsamplesize *= audio_format.channels;
+
+ samplesreq = sizeof(chunk) / (4 * audio_format.channels);
+
+ decoder_initialized(decoder, &audio_format,
+ (float)allsamples / audio_format.sample_rate);
+
+ position = 0;
+
+ do {
+ if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
+ if (canseek) {
+ int where;
+
+ decoder_clear(decoder);
+
+ where = decoder_seek_where(decoder) *
+ audio_format.sample_rate;
+ if (WavpackSeekSample(wpc, where)) {
+ position = where;
+ decoder_command_finished(decoder);
+ } else
+ decoder_seek_error(decoder);
+ } else {
+ decoder_seek_error(decoder);
+ }
+ }
+
+ if (decoder_get_command(decoder) == DECODE_COMMAND_STOP)
+ break;
+
+ samplesgot = WavpackUnpackSamples(wpc,
+ (int32_t *)chunk, samplesreq);
+ if (samplesgot > 0) {
+ int bitrate = (int)(WavpackGetInstantBitrate(wpc) /
+ 1000 + 0.5);
+ position += samplesgot;
+ file_time = (float)position / audio_format.sample_rate;
+
+ format_samples(Bps, chunk,
+ samplesgot * audio_format.channels);
+
+ decoder_data(decoder, NULL, 0, chunk,
+ samplesgot * outsamplesize,
+ file_time, bitrate,
+ replayGainInfo);
+ }
+ } while (samplesgot == samplesreq);
+
+ decoder_flush(decoder);
+}
+
+static char *wavpack_tag(WavpackContext *wpc, char *key)
+{
+ char *value = NULL;
+ int size;
+
+ size = WavpackGetTagItem(wpc, key, NULL, 0);
+ if (size > 0) {
+ size++;
+ value = xmalloc(size);
+ if (!value)
+ return NULL;
+ WavpackGetTagItem(wpc, key, value, size);
+ }
+
+ return value;
+}
+
+static ReplayGainInfo *wavpack_replaygain(WavpackContext *wpc)
+{
+ static char replaygain_track_gain[] = "replaygain_track_gain";
+ static char replaygain_album_gain[] = "replaygain_album_gain";
+ static char replaygain_track_peak[] = "replaygain_track_peak";
+ static char replaygain_album_peak[] = "replaygain_album_peak";
+ ReplayGainInfo *replayGainInfo;
+ int found = 0;
+ char *value;
+
+ replayGainInfo = newReplayGainInfo();
+
+ value = wavpack_tag(wpc, replaygain_track_gain);
+ if (value) {
+ replayGainInfo->trackGain = atof(value);
+ free(value);
+ found = 1;
+ }
+
+ value = wavpack_tag(wpc, replaygain_album_gain);
+ if (value) {
+ replayGainInfo->albumGain = atof(value);
+ free(value);
+ found = 1;
+ }
+
+ value = wavpack_tag(wpc, replaygain_track_peak);
+ if (value) {
+ replayGainInfo->trackPeak = atof(value);
+ free(value);
+ found = 1;
+ }
+
+ value = wavpack_tag(wpc, replaygain_album_peak);
+ if (value) {
+ replayGainInfo->albumPeak = atof(value);
+ free(value);
+ found = 1;
+ }
+
+
+ if (found)
+ return replayGainInfo;
+
+ freeReplayGainInfo(replayGainInfo);
+
+ return NULL;
+}
+
+/*
+ * Reads metainfo from the specified file.
+ */
+static struct tag *wavpack_tagdup(char *fname)
+{
+ WavpackContext *wpc;
+ struct tag *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 = tag_new();
+ 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);
+ tag_add_item(tag, tagtypes[i].type, s);
+ }
+ }
+
+ if (s != NULL)
+ free(s);
+
+ WavpackCloseFile(wpc);
+
+ return tag;
+}
+
+/*
+ * mpd InputStream <=> WavpackStreamReader wrapper callbacks
+ */
+
+/* This struct is needed for per-stream last_byte storage. */
+typedef struct {
+ struct decoder *decoder;
+ InputStream *is;
+ /* Needed for push_back_byte() */
+ int last_byte;
+} InputStreamPlus;
+
+static int32_t read_bytes(void *id, void *data, int32_t bcount)
+{
+ InputStreamPlus *isp = (InputStreamPlus *)id;
+ uint8_t *buf = (uint8_t *)data;
+ int32_t i = 0;
+
+ if (isp->last_byte != EOF) {
+ *buf++ = isp->last_byte;
+ isp->last_byte = EOF;
+ --bcount;
+ ++i;
+ }
+ return i + decoder_read(isp->decoder, isp->is, buf, bcount);
+}
+
+static uint32_t get_pos(void *id)
+{
+ return ((InputStreamPlus *)id)->is->offset;
+}
+
+static int set_pos_abs(void *id, uint32_t pos)
+{
+ return seekInputStream(((InputStreamPlus *)id)->is, pos, SEEK_SET);
+}
+
+static int set_pos_rel(void *id, int32_t delta, int mode)
+{
+ return seekInputStream(((InputStreamPlus *)id)->is, delta, mode);
+}
+
+static int push_back_byte(void *id, int c)
+{
+ ((InputStreamPlus *)id)->last_byte = c;
+ return 1;
+}
+
+static uint32_t get_length(void *id)
+{
+ return ((InputStreamPlus *)id)->is->size;
+}
+
+static int can_seek(void *id)
+{
+ return ((InputStreamPlus *)id)->is->seekable;
+}
+
+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 */
+};
+
+static void
+initInputStreamPlus(InputStreamPlus *isp, struct decoder *decoder,
+ InputStream *is)
+{
+ isp->decoder = decoder;
+ isp->is = is;
+ isp->last_byte = EOF;
+}
+
+/*
+ * Tries to decode the specified stream, and gives true if managed to do it.
+ */
+static bool wavpack_trydecode(InputStream *is)
+{
+ char error[ERRORLEN];
+ WavpackContext *wpc;
+ InputStreamPlus isp;
+
+ initInputStreamPlus(&isp, NULL, is);
+ wpc = WavpackOpenFileInputEx(&mpd_is_reader, &isp, NULL, error,
+ OPEN_STREAMING, 0);
+ if (wpc == NULL)
+ return false;
+
+ WavpackCloseFile(wpc);
+ /* Seek it back in order to play from the first byte. */
+ seekInputStream(is, 0, SEEK_SET);
+
+ return true;
+}
+
+static int wavpack_open_wvc(struct decoder *decoder,
+ InputStream *is_wvc)
+{
+ char tmp[MPD_PATH_MAX];
+ const char *utf8url;
+ size_t len;
+ char *wvc_url = NULL;
+ int ret;
+
+ /*
+ * As we use dc->utf8url, this function will be bad for
+ * single files. utf8url is not absolute file path :/
+ */
+ utf8url = decoder_get_url(decoder, tmp);
+ if (utf8url == NULL)
+ return 0;
+
+ len = strlen(utf8url);
+ if (!len)
+ return 0;
+
+ wvc_url = (char *)xmalloc(len + 2); /* +2: 'c' and EOS */
+ if (wvc_url == NULL)
+ return 0;
+
+ memcpy(wvc_url, utf8url, len);
+ wvc_url[len] = 'c';
+ wvc_url[len + 1] = '\0';
+
+ ret = openInputStream(is_wvc, wvc_url);
+ free(wvc_url);
+
+ if (ret)
+ return 0;
+
+ /*
+ * And we try to buffer in order to get know
+ * about a possible 404 error.
+ */
+ for (;;) {
+ if (inputStreamAtEOF(is_wvc)) {
+ /*
+ * EOF is reached even without
+ * a single byte is read...
+ * So, this is not good :/
+ */
+ closeInputStream(is_wvc);
+ return 0;
+ }
+
+ if (bufferInputStream(is_wvc) >= 0)
+ return 1;
+
+ if (decoder_get_command(decoder) != DECODE_COMMAND_NONE) {
+ closeInputStream(is_wvc);
+ return 0;
+ }
+
+ /* Save some CPU */
+ my_usleep(1000);
+ }
+}
+
+/*
+ * Decodes a stream.
+ */
+static int wavpack_streamdecode(struct decoder * decoder, InputStream *is)
+{
+ char error[ERRORLEN];
+ WavpackContext *wpc;
+ InputStream is_wvc;
+ int open_flags = OPEN_2CH_MAX | OPEN_NORMALIZE /*| OPEN_STREAMING*/;
+ InputStreamPlus isp, isp_wvc;
+
+ if (wavpack_open_wvc(decoder, &is_wvc)) {
+ initInputStreamPlus(&isp_wvc, decoder, &is_wvc);
+ open_flags |= OPEN_WVC;
+ }
+
+ initInputStreamPlus(&isp, decoder, is);
+ wpc = WavpackOpenFileInputEx(&mpd_is_reader, &isp, &isp_wvc, error,
+ open_flags, 15);
+
+ if (wpc == NULL) {
+ ERROR("failed to open WavPack stream: %s\n", error);
+ return -1;
+ }
+
+ wavpack_decode(decoder, wpc, can_seek(&isp), NULL);
+
+ WavpackCloseFile(wpc);
+ if (open_flags & OPEN_WVC)
+ closeInputStream(&is_wvc);
+ closeInputStream(is);
+
+ return 0;
+}
+
+/*
+ * Decodes a file.
+ */
+static int wavpack_filedecode(struct decoder * decoder, char *fname)
+{
+ char error[ERRORLEN];
+ WavpackContext *wpc;
+ ReplayGainInfo *replayGainInfo;
+
+ wpc = WavpackOpenFileInput(fname, error,
+ OPEN_TAGS | OPEN_WVC |
+ OPEN_2CH_MAX | OPEN_NORMALIZE, 15);
+ if (wpc == NULL) {
+ ERROR("failed to open WavPack file \"%s\": %s\n", fname, error);
+ return -1;
+ }
+
+ replayGainInfo = wavpack_replaygain(wpc);
+
+ wavpack_decode(decoder, wpc, 1, replayGainInfo);
+
+ if (replayGainInfo)
+ freeReplayGainInfo(replayGainInfo);
+
+ WavpackCloseFile(wpc);
+
+ return 0;
+}
+
+static char const *wavpackSuffixes[] = { "wv", NULL };
+static char const *wavpackMimeTypes[] = { "audio/x-wavpack", NULL };
+
+struct decoder_plugin wavpackPlugin = {
+ .name = "wavpack",
+ .try_decode = wavpack_trydecode,
+ .stream_decode = wavpack_streamdecode,
+ .file_decode = wavpack_filedecode,
+ .tag_dup = wavpack_tagdup,
+ .stream_types = INPUT_PLUGIN_STREAM_FILE | INPUT_PLUGIN_STREAM_URL,
+ .suffixes = wavpackSuffixes,
+ .mime_types = wavpackMimeTypes
+};
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