From d7fd6a45e50475cddf0b8bad8baab01b33cf3c1f Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 26 May 2008 22:00:19 +0000
Subject: move sources to src/ subdir

git-svn-id: file:///home/lennart/svn/public/libcanberra/trunk@12 01b60673-d06a-42c0-afdd-89cb8e0f78ac
---
 src/read-vorbis.c | 148 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 src/read-vorbis.c

(limited to 'src/read-vorbis.c')

diff --git a/src/read-vorbis.c b/src/read-vorbis.c
new file mode 100644
index 0000000..717f851
--- /dev/null
+++ b/src/read-vorbis.c
@@ -0,0 +1,148 @@
+/* $Id$ */
+
+/***
+  This file is part of libcanberra.
+
+  Copyright 2008 Lennart Poettering
+
+  libcanberra is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation, either version 2.1 of the
+  License, or (at your option) any later version.
+
+  libcanberra 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with libcanberra. If not, If not, see
+  <http://www.gnu.org/licenses/>.
+***/
+
+#include "read-vorbis.h"
+
+#define FILE_SIZE_MAX (64U*1024U*1024U)
+
+struct ca_vorbis {
+    OggVorbis_File ovf;
+};
+
+static int convert_error(int or) {
+    switch (or) {
+        case OV_NOSEEK:
+        case OV_BADPACKET:
+        case OV_BADLINK:
+        case OV_FAULT:
+        case OV_EREAD:
+        case OV_HOLE:
+            return CA_ERROR_IO;
+
+        case OV_EIMPL:
+        case OV_EVERSION:
+        case OV_ENOTAUDIO
+            return CA_ERROR_NOT_SUPPORTED;
+
+        case OV_ENOTVORBIS:
+        case OV_EBADHEADER:
+        case OV_EOF:
+            return CA_ERROR_CORRUPT;
+
+        case OV_EINVAL:
+            return CA_ERROR_INVALID;
+
+        default:
+            return CA_ERROR_INTERNAL;
+    }
+}
+
+int ca_vorbis_open(ca_vorbis **_v, FILE *f)  {
+    int ret, or;
+    ca_vorbis *v;
+    int64_t n;
+
+    ca_return_val_if_fail(_v, CA_ERROR_INVALID);
+    ca_return_val_if_fail(f, CA_ERROR_INVALID);
+
+    if (!(v = ca_new(ca_vorbis, 1)))
+        return CA_ERROR_OOM;
+
+    if ((or = ov_open(f, &v->ovf, NULL, 0)) < 0) {
+        ret = convert_error(or);
+        goto fail;
+    }
+
+    if ((n = ov_pcm_total(&ovf, -1)) < 0) {
+        ret = convert_error(or);
+        ov_clear(&v->ovf);
+        goto fail;
+    }
+
+    if (n * sizeof(int16_t) > FILE_SIZE_MAX) {
+        ret = CA_ERROR_TOOBIG;
+        ov_clear(&v->ovf);
+        goto fail;
+    }
+
+    *_v = v;
+
+    return CA_SUCCESS;
+
+fail:
+
+    ca_free(v);
+    return ret;
+}
+
+void ca_vorbis_close(ca_vorbis *v) {
+    ca_assert(v);
+
+    ov_clear(&v->ovf);
+    ca_free(v);
+}
+
+unsigned ca_vorbis_get_nchannels(ca_vorbis *v) {
+    vorbis_info *vi;
+    ca_assert(v);
+
+    ca_assert_se(vi = ov_info(&vf, -1));
+
+    return vi->channels;
+}
+
+unsigned ca_vorbis_get_rate(ca_vorbis *v) {
+    vorbis_info *vi;
+    ca_assert(v);
+
+    ca_assert_se(vi = ov_info(&vf, -1));
+
+    return (unsigned) vi->rate;
+}
+
+int ca_vorbis_read_int16ne(ca_vorbis *v, int16_t *d, unsigned *n){
+    long r;
+    int section;
+
+    ca_return_val_if_fail(w, CA_ERROR_INVALID);
+    ca_return_val_if_fail(d, CA_ERROR_INVALID);
+    ca_return_val_if_fail(n, CA_ERROR_INVALID);
+    ca_return_val_if_fail(*n > 0, CA_ERROR_INVALID);
+
+    r = ov_read(&v->ovf, d, *n * sizeof(float),
+#ifdef WORDS_BIGENDIAN
+                1,
+#else
+                0,
+#endif
+                2, 1, &section);
+
+    if (r < 0)
+        return convert_error(or);
+
+    /* We only read the first section */
+    if (section != 0)
+        return 0;
+
+    *n = (unsigned) r;
+    return CA_SUCCESS;
+}
-- 
cgit