added libsndfile decoder

1 files changed, 180 insertions, 0 deletions

diff --git a/plugins/sndfile/sndfile.c b/plugins/sndfile/sndfile.c
new file mode 100644
index 00000000..9281890a
--- /dev/null
+++ b/plugins/sndfile/sndfile.c
@@ -0,0 +1,180 @@
+/*
+    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 <sndfile.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 {
+    SNDFILE *ctx;
+    int startsample;
+    int endsample;
+    int currentsample;
+} sndfilectx_t;
+
+static sndfilectx_t sfctx;
+
+static int
+sndfile_init (DB_playItem_t *it) {
+    memset (&sfctx, 0, sizeof (sfctx));
+    SF_INFO inf;
+    sfctx.ctx = sf_open (it->fname, SFM_READ, &inf);
+    if (!sfctx.ctx) {
+        return -1;
+    }
+    plugin.info.bps = 16;
+    plugin.info.channels = inf.channels;
+    plugin.info.samplerate = inf.samplerate;
+    plugin.info.readpos = 0;
+    if (it->endsample > 0) {
+        sfctx.startsample = it->startsample;
+        sfctx.endsample = it->endsample;
+        if (plugin.seek_sample (0) < 0) {
+            plugin.free ();
+            return -1;
+        }
+    }
+    else {
+        sfctx.startsample = 0;
+        sfctx.endsample = inf.frames-1;
+    }
+    return 0;
+}
+
+static void
+sndfile_free (void) {
+    if (sfctx.ctx) {
+        sf_close (sfctx.ctx);
+    }
+    memset (&sfctx, 0, sizeof (sfctx));
+}
+
+static int
+sndfile_read_int16 (char *bytes, int size) {
+    if (size / (2 * plugin.info.channels) + sfctx.currentsample > sfctx.endsample) {
+        size = (sfctx.endsample - sfctx.currentsample + 1) * 2 * plugin.info.channels;
+        trace ("wv: size truncated to %d bytes, cursample=%d, endsample=%d\n", size, sfctx.currentsample, sfctx.endsample);
+        if (size <= 0) {
+            return 0;
+        }
+    }
+    int n = sf_readf_short (sfctx.ctx, (short *)bytes, size/(2*plugin.info.channels));
+    sfctx.currentsample += n;
+    size = n * 2 * plugin.info.channels;
+    plugin.info.readpos = (float)(sfctx.currentsample-sfctx.startsample)/plugin.info.samplerate;
+    return size;
+}
+
+static int
+sndfile_read_float32 (char *bytes, int size) {
+    if (size / (4 * plugin.info.channels) + sfctx.currentsample > sfctx.endsample) {
+        size = (sfctx.endsample - sfctx.currentsample + 1) * 4 * plugin.info.channels;
+        trace ("wv: size truncated to %d bytes, cursample=%d, endsample=%d\n", size, sfctx.currentsample, sfctx.endsample);
+        if (size <= 0) {
+            return 0;
+        }
+    }
+    int n = sf_readf_float (sfctx.ctx, (float *)bytes, size/(4*plugin.info.channels));
+    sfctx.currentsample += n;
+    size = n * 4 * plugin.info.channels;
+    plugin.info.readpos = (float)(sfctx.currentsample-sfctx.startsample)/plugin.info.samplerate;
+    return size;
+}
+
+static int
+sndfile_seek_sample (int sample) {
+    sfctx.currentsample = sf_seek (sfctx.ctx, sample + sfctx.startsample, SEEK_SET);
+    plugin.info.readpos = (float)(sfctx.currentsample - sfctx.startsample) / plugin.info.samplerate;
+    return 0;
+}
+
+static int
+sndfile_seek (float sec) {
+    return sndfile_seek_sample (sec * plugin.info.samplerate);
+}
+
+static DB_playItem_t *
+sndfile_insert (DB_playItem_t *after, const char *fname) {
+    SF_INFO inf;
+    SNDFILE *sf = sf_open (fname, SFM_READ, &inf);
+    if (!sf) {
+        trace ("sndfile: sf_open failed");
+        return NULL;
+    }
+    int totalsamples = inf.frames;
+    int samplerate = inf.samplerate;
+    sf_close (sf);
+    float duration = (float)totalsamples / samplerate;
+    DB_playItem_t *cue_after = deadbeef->pl_insert_cue (after, fname, &plugin, "sndfile", totalsamples, samplerate);
+    if (cue_after) {
+        return cue_after;
+    }
+
+    DB_playItem_t *it = deadbeef->pl_item_alloc ();
+    it->decoder = &plugin;
+    it->fname = strdup (fname);
+    it->filetype = "wav";
+    it->duration = duration;
+
+    trace ("sndfile: totalsamples=%d, samplerate=%d, duration=%f\n", totalsamples, samplerate, duration);
+
+    deadbeef->pl_add_meta (it, "title", NULL);
+    after = deadbeef->pl_insert_item (after, it);
+
+    return after;
+}
+
+static const char * exts[] = { "wav", NULL };
+static const char *filetypes[] = { "wav", 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 = "SNDFILE decoder",
+    .plugin.author = "Alexey Yakovenko",
+    .plugin.email = "waker@users.sourceforge.net",
+    .plugin.website = "http://deadbeef.sf.net",
+    .init = sndfile_init,
+    .free = sndfile_free,
+    .read_int16 = sndfile_read_int16,
+    .read_float32 = sndfile_read_float32,
+    .seek = sndfile_seek,
+    .seek_sample = sndfile_seek_sample,
+    .insert = sndfile_insert,
+    .exts = exts,
+    .id = "sndfile",
+    .filetypes = filetypes
+};
+
+DB_plugin_t *
+sndfile_load (DB_functions_t *api) {
+    deadbeef = api;
+    return DB_PLUGIN (&plugin);
+}