initial wavpack support

2 files changed, 194 insertions, 0 deletions

diff --git a/plugins/wavpack/Makefile.am b/plugins/wavpack/Makefile.am
new file mode 100644
index 00000000..9a86351f
--- /dev/null
+++ b/plugins/wavpack/Makefile.am
@@ -0,0 +1,7 @@
+wavpackdir = $(libdir)/$(PACKAGE)
+pkglib_LTLIBRARIES = wavpack.la
+wavpack_la_SOURCES = wavpack.c
+wavpack_la_LDFLAGS = -module
+
+wavpack_la_LIBADD = $(LDADD) $(WAVPACK_LIBS)
+AM_CFLAGS = $(CFLAGS) -std=c99
diff --git a/plugins/wavpack/wavpack.c b/plugins/wavpack/wavpack.c
new file mode 100644
index 00000000..717bf2e5
--- /dev/null
+++ b/plugins/wavpack/wavpack.c
@@ -0,0 +1,187 @@
+/*
+    DeaDBeeF - ultimate music player for GNU/Linux systems with X11
+    Copyright (C) 2009  Alexey Yakovenko
+
+    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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+*/
+
+#include <string.h>
+#include <wavpack/wavpack.h>
+#include "../../deadbeef.h"
+
+#define min(x,y) ((x)<(y)?(x):(y))
+#define max(x,y) ((x)>(y)?(x):(y))
+
+#define trace(...) { fprintf(stderr, __VA_ARGS__); }
+//#define trace(fmt,...)
+
+static DB_decoder_t plugin;
+static DB_functions_t *deadbeef;
+
+typedef struct {
+    WavpackContext *ctx;
+    int startsample;
+    int endsample;
+} wvctx_t;
+
+static wvctx_t wvctx;
+
+static int
+wv_init (DB_playItem_t *it) {
+    memset (&wvctx, 0, sizeof (wvctx));
+    wvctx.ctx = WavpackOpenFileInput (it->fname, NULL, 0, 0);
+    if (!wvctx.ctx) {
+        return -1;
+    }
+    plugin.info.bps = WavpackGetBitsPerSample (wvctx.ctx);
+    plugin.info.channels = WavpackGetNumChannels (wvctx.ctx);
+    plugin.info.samplerate = WavpackGetSampleRate (wvctx.ctx);
+    plugin.info.readpos = 0;
+    if (it->endsample > 0) {
+        wvctx.startsample = it->startsample;
+        wvctx.endsample = it->endsample;
+        if (plugin.seek_sample (0) < 0) {
+            plugin.free ();
+            return -1;
+        }
+    }
+    else {
+        wvctx.startsample = 0;
+        wvctx.endsample = WavpackGetNumSamples (wvctx.ctx)-1;
+    }
+    return 0;
+}
+
+static void
+wv_free (void) {
+    if (wvctx.ctx) {
+        WavpackCloseFile (wvctx.ctx);
+    }
+    memset (&wvctx, 0, sizeof (wvctx));
+}
+
+
+static int
+wv_read_int16 (char *bytes, int size) {
+    int currentsample = WavpackGetSampleIndex (wvctx.ctx);
+    if (size / (2 * plugin.info.channels) + currentsample > wvctx.endsample) {
+        size = (wvctx.endsample - currentsample + 1) * 2 * plugin.info.channels;
+        trace ("wv: size truncated to %d bytes, cursample=%d, endsample=%d\n", size, currentsample, wvctx.endsample);
+        if (size <= 0) {
+            return 0;
+        }
+    }
+    int32_t buffer[size/2];
+    int nchannels = WavpackGetNumChannels (wvctx.ctx);
+    int n = WavpackUnpackSamples (wvctx.ctx, buffer, size/(2*nchannels));
+    size = n * 2 * nchannels;
+    // convert to int16
+    int32_t *p = buffer;
+    n *= nchannels;
+    while (n > 0) {
+        *((int16_t *)bytes) = (int16_t)(*p);
+        bytes += sizeof (int16_t);
+        p++;
+        n--;
+    }
+    plugin.info.readpos = (float)(WavpackGetSampleIndex (wvctx.ctx)-wvctx.startsample)/WavpackGetSampleRate (wvctx.ctx);
+    return size;
+}
+
+static int
+wv_seek_sample (int sample) {
+    WavpackSeekSample (wvctx.ctx, sample + wvctx.startsample);
+    plugin.info.readpos = (float)(WavpackGetSampleIndex (wvctx.ctx) - wvctx.startsample) / WavpackGetSampleRate (wvctx.ctx);
+    return 0;
+}
+
+static int
+wv_seek (float sec) {
+    return wv_seek_sample (sec * WavpackGetSampleRate (wvctx.ctx));
+}
+
+static DB_playItem_t *
+wv_insert (DB_playItem_t *after, const char *fname) {
+    WavpackContext *ctx = WavpackOpenFileInput (fname, NULL, 0, 0);
+    if (!ctx) {
+        trace ("WavpackOpenFileInput failed");
+        return NULL;
+    }
+    int totalsamples = WavpackGetNumSamples (ctx);
+    int samplerate = WavpackGetSampleRate (ctx);
+    float duration = (float)totalsamples / samplerate;
+    DB_playItem_t *cue_after = deadbeef->pl_insert_cue (after, fname, &plugin, "wv", totalsamples, samplerate);
+    if (cue_after) {
+        WavpackCloseFile (ctx);
+        return cue_after;
+    }
+
+    DB_playItem_t *it = deadbeef->pl_item_alloc ();
+    it->decoder = &plugin;
+    it->fname = strdup (fname);
+    it->filetype = "wv";
+    it->duration = duration;
+    WavpackCloseFile (ctx);
+
+    trace ("wv: totalsamples=%d, samplerate=%d, duration=%f\n", totalsamples, samplerate, duration);
+
+    FILE *fp = fopen (fname, "rb");
+    if (fp) {
+        int apeerr = deadbeef->junk_read_ape (it, fp);
+        if (!apeerr) {
+            trace ("wv: ape tag found\n");
+        }
+        int v1err = deadbeef->junk_read_id3v1 (it, fp);
+        if (!v1err) {
+            trace ("wv: id3v1 tag found\n");
+        }
+        fclose (fp);
+    }
+    deadbeef->pl_add_meta (it, "title", NULL);
+    after = deadbeef->pl_insert_item (after, it);
+
+    return after;
+}
+
+static const char * exts[] = { "wv", NULL };
+static const char *filetypes[] = { "wv", NULL };
+
+// define plugin interface
+static DB_decoder_t plugin = {
+    DB_PLUGIN_SET_API_VERSION
+    .plugin.version_major = 0,
+    .plugin.version_minor = 1,
+    .plugin.type = DB_PLUGIN_DECODER,
+    .plugin.name = "WavPack decoder",
+    .plugin.author = "Alexey Yakovenko",
+    .plugin.email = "waker@users.sourceforge.net",
+    .plugin.website = "http://deadbeef.sf.net",
+    .init = wv_init,
+    .free = wv_free,
+    .read_int16 = wv_read_int16,
+//    .read_float32 = wv_read_float32,
+    .seek = wv_seek,
+    .seek_sample = wv_seek_sample,
+    .insert = wv_insert,
+    .exts = exts,
+    .id = "wv",
+    .filetypes = filetypes
+};
+
+DB_plugin_t *
+wavpack_load (DB_functions_t *api) {
+    deadbeef = api;
+    return DB_PLUGIN (&plugin);
+}