moved and renamed the codecs, gave the codecs a new extension (.codec),

unified to a single codec-only API, made a new codeclib, disabled the building
of the *2wav plugins


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6812 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 168 insertions, 0 deletions

diff --git a/apps/codecs/vorbis.c b/apps/codecs/vorbis.c
new file mode 100644
index 0000000000..969fdf365b
--- /dev/null
+++ b/apps/codecs/vorbis.c
@@ -0,0 +1,168 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Björn Stenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "kernel.h"
+#include "codecs.h"
+
+#include "Tremor/ivorbisfile.h"
+#include "playback.h"
+#include "lib/codeclib.h"
+
+static struct codec_api* rb;
+
+/* Some standard functions and variables needed by Tremor */
+
+int errno;
+
+size_t strlen(const char *s)
+{
+    return(rb->strlen(s));
+}
+
+char *strcpy(char *dest, const char *src)
+{
+    return(rb->strcpy(dest,src));
+}
+
+char *strcat(char *dest, const char *src)
+{
+    return(rb->strcat(dest,src));
+}
+
+size_t read_handler(void *ptr, size_t size, size_t nmemb, void *datasource)
+{
+    return rb->read_filebuf(ptr, nmemb*size);
+}
+
+int seek_handler(void *datasource, ogg_int64_t offset, int whence)
+{
+    /* We are not seekable at the moment */
+    (void)datasource;
+    (void)offset;
+    (void)whence;
+    return -1;
+}
+
+int close_handler(void *datasource)
+{
+    (void)datasource;
+    return 0;
+}
+
+long tell_handler(void *datasource)
+{
+    return rb->curpos;
+}
+
+#ifdef USE_IRAM
+extern char iramcopy[];
+extern char iramstart[];
+extern char iramend[];
+#endif
+
+
+/* reserve the PCM buffer in the IRAM area */
+static char pcmbuf[4096] IDATA_ATTR;
+
+/* this is the codec entry point */
+enum codec_status codec_start(struct codec_api* api, void* parm)
+{
+    ov_callbacks callbacks;
+    OggVorbis_File vf;
+    vorbis_info* vi;
+
+    int error;
+    long n;
+    int current_section;
+    int eof;
+#if BYTE_ORDER == BIG_ENDIAN
+    int i;
+    char x;
+#endif
+
+    TEST_CODEC_API(api);
+
+    /* if you are using a global api pointer, don't forget to copy it!
+       otherwise you will get lovely "I04: IllInstr" errors... :-) */
+    rb = api;
+
+#ifdef USE_IRAM
+    rb->memcpy(iramstart, iramcopy, iramend-iramstart);
+#endif
+    
+    rb->configure(CODEC_SET_FILEBUF_LIMIT, (int *)(1024*1024*2));
+    rb->configure(CODEC_SET_FILEBUF_CHUNKSIZE, (int *)(1024*64));
+    
+    /* We need to flush reserver memory every track load. */
+  next_track:
+    if (codec_init(rb)) {
+        return CODEC_ERROR;
+    }
+
+
+    /* Create a decoder instance */
+
+    callbacks.read_func=read_handler;
+    callbacks.seek_func=seek_handler;
+    callbacks.tell_func=tell_handler;
+    callbacks.close_func=close_handler;
+
+    error=ov_open_callbacks(rb,&vf,NULL,0,callbacks);
+    
+    vi=ov_info(&vf,-1);
+
+    if (vi==NULL) {
+        // rb->splash(HZ*2, true, "Vorbis Error");
+        return CODEC_ERROR;
+    }
+  
+    eof=0;
+    while (!eof) {
+        /* Read host-endian signed 16 bit PCM samples */
+        n=ov_read(&vf,pcmbuf,sizeof(pcmbuf),&current_section);
+
+        if (n==0) {
+            eof=1;
+        }
+        else if (n < 0) {
+            DEBUGF("Error decoding frame\n");
+        } else {
+            rb->yield();
+            if (rb->stop_codec || rb->reload_codec)
+                break ;
+        
+            rb->yield();
+            while (!rb->audiobuffer_insert(pcmbuf, n))
+                rb->yield();
+
+            rb->set_elapsed(ov_time_tell(&vf));
+
+#if BYTE_ORDER == BIG_ENDIAN
+            for (i=0;i<n;i+=2) { 
+                x=pcmbuf[i]; pcmbuf[i]=pcmbuf[i+1]; pcmbuf[i+1]=x;
+            }
+#endif
+        }
+    }
+  
+    if (rb->request_next_track())
+        goto next_track;
+    
+    return CODEC_OK;
+}
+