From e205b25d65ccb380fa158711e24d55b6de5d9bc1 Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Thu, 16 Feb 2006 19:19:58 +0000
Subject: Reorganised the source tree. We now have src/ with a couple of
 subdirs:

 * daemon/ - Contains the files specific to the polypaudio daemon.
 * modules/ - All loadable modules.
 * polyp/ - Files that are part of the public, application interface or
   are only used in libpolyp.
 * polypcore/ - All other shared files.
 * tests/ - Test programs.
 * utils/ - Utility programs.


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f
---
 src/polypcore/sound-file.c | 139 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/polypcore/sound-file.c

(limited to 'src/polypcore/sound-file.c')

diff --git a/src/polypcore/sound-file.c b/src/polypcore/sound-file.c
new file mode 100644
index 00000000..a81c283a
--- /dev/null
+++ b/src/polypcore/sound-file.c
@@ -0,0 +1,139 @@
+/* $Id$ */
+
+/***
+  This file is part of polypaudio.
+ 
+  polypaudio 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 of the License,
+  or (at your option) any later version.
+ 
+  polypaudio 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 Lesser General Public License
+  along with polypaudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <assert.h>
+
+#include <sndfile.h>
+
+#include "sound-file.h"
+#include <polyp/sample.h>
+#include "log.h"
+
+#define MAX_FILE_SIZE (1024*1024)
+
+int pa_sound_file_load(const char *fname, pa_sample_spec *ss, pa_memchunk *chunk, pa_memblock_stat *s) {
+    SNDFILE*sf = NULL;
+    SF_INFO sfinfo;
+    int ret = -1;
+    size_t l;
+    sf_count_t (*readf_function)(SNDFILE *sndfile, void *ptr, sf_count_t frames);
+    assert(fname && ss && chunk);
+
+    chunk->memblock = NULL;
+    chunk->index = chunk->length = 0;
+
+    memset(&sfinfo, 0, sizeof(sfinfo));
+
+    if (!(sf = sf_open(fname, SFM_READ, &sfinfo))) {
+        pa_log(__FILE__": Failed to open file %s\n", fname);
+        goto finish;
+    }
+
+    switch (sfinfo.format & SF_FORMAT_SUBMASK) {
+        case SF_FORMAT_FLOAT:
+        case SF_FORMAT_DOUBLE:
+            /* Only float and double need a special case. */
+            ss->format = PA_SAMPLE_FLOAT32NE;
+            readf_function = (sf_count_t (*)(SNDFILE *sndfile, void *ptr, sf_count_t frames)) sf_readf_float;
+            break;
+        default:
+            /* Everything else is cleanly converted to signed 16 bit. */
+            ss->format = PA_SAMPLE_S16NE;
+            readf_function = (sf_count_t (*)(SNDFILE *sndfile, void *ptr, sf_count_t frames)) sf_readf_short;
+            break;
+    }
+
+    ss->rate = sfinfo.samplerate;
+    ss->channels = sfinfo.channels;
+
+    if (!pa_sample_spec_valid(ss)) {
+        pa_log(__FILE__": Unsupported sample format in file %s\n", fname);
+        goto finish;
+    }
+    
+    if ((l = pa_frame_size(ss)*sfinfo.frames) > MAX_FILE_SIZE) {
+        pa_log(__FILE__": File too large\n");
+        goto finish;
+    }
+
+    chunk->memblock = pa_memblock_new(l, s);
+    assert(chunk->memblock);
+    chunk->index = 0;
+    chunk->length = l;
+
+    if (readf_function(sf, chunk->memblock->data, sfinfo.frames) != sfinfo.frames) {
+        pa_log(__FILE__": Premature file end\n");
+        goto finish;
+    }
+
+    ret = 0;
+
+finish:
+
+    if (sf)
+        sf_close(sf);
+
+    if (ret != 0 && chunk->memblock)
+        pa_memblock_unref(chunk->memblock);
+    
+    return ret;
+    
+}
+
+int pa_sound_file_too_big_to_cache(const char *fname) {
+    SNDFILE*sf = NULL;
+    SF_INFO sfinfo;
+    pa_sample_spec ss;
+
+    if (!(sf = sf_open(fname, SFM_READ, &sfinfo))) {
+        pa_log(__FILE__": Failed to open file %s\n", fname);
+        return 0;
+    }
+
+    sf_close(sf);
+
+    switch (sfinfo.format & SF_FORMAT_SUBMASK) {
+        case SF_FORMAT_FLOAT:
+        case SF_FORMAT_DOUBLE:
+            /* Only float and double need a special case. */
+            ss.format = PA_SAMPLE_FLOAT32NE;
+            break;
+        default:
+            /* Everything else is cleanly converted to signed 16 bit. */
+            ss.format = PA_SAMPLE_S16NE;
+            break;
+    }
+
+    ss.rate = sfinfo.samplerate;
+    ss.channels = sfinfo.channels;
+
+    if ((pa_frame_size(&ss) * sfinfo.frames) > MAX_FILE_SIZE) {
+        pa_log(__FILE__": File too large %s\n", fname);
+        return 1;
+    }
+
+    return 0;
+}
-- 
cgit