Add codecs to librbcodec.

Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/libffmpegFLAC/decoder.h b/lib/rbcodec/codecs/libffmpegFLAC/decoder.h
new file mode 100644
index 0000000000..677a21ac98
--- /dev/null
+++ b/lib/rbcodec/codecs/libffmpegFLAC/decoder.h
@@ -0,0 +1,49 @@
+#ifndef _FLAC_DECODER_H
+#define _FLAC_DECODER_H
+ 
+#include "bitstream.h"
+
+#define MAX_CHANNELS 6       /* Maximum supported channels, only left/right will be played back */
+#define MAX_BLOCKSIZE 4608   /* Maxsize in samples of one uncompressed frame */
+#define MAX_FRAMESIZE 65536  /* Maxsize in bytes of one compressed frame */
+
+#define FLAC_OUTPUT_DEPTH 29 /* Provide samples left-shifted to 28 bits+sign */
+
+enum decorrelation_type {
+    INDEPENDENT,
+    LEFT_SIDE,
+    RIGHT_SIDE,
+    MID_SIDE,
+};
+
+typedef struct FLACContext {
+    GetBitContext gb;
+
+    int min_blocksize, max_blocksize;
+    int min_framesize, max_framesize;
+    int samplerate, channels;
+    int blocksize/*, last_blocksize*/;
+    int bps, curr_bps;
+    unsigned long samplenumber;
+    unsigned long totalsamples;
+    enum decorrelation_type decorrelation;
+
+    int filesize;
+    int length;
+    int bitrate;
+    int metadatalength;
+    
+    int bitstream_size;
+    int bitstream_index;
+
+    int sample_skip;
+    int framesize;
+    
+    int32_t *decoded[MAX_CHANNELS];
+} FLACContext;
+
+int flac_decode_frame(FLACContext *s,
+                      uint8_t *buf, int buf_size,
+                      void (*yield)(void)) ICODE_ATTR_FLAC;
+
+#endif