From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001
From: Sean Bartell <wingedtachikoma@gmail.com>
Date: Sat, 25 Jun 2011 21:32:25 -0400
Subject: Add codecs to librbcodec.
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Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
---
 lib/rbcodec/codecs/librm/rm.h | 102 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 lib/rbcodec/codecs/librm/rm.h

(limited to 'lib/rbcodec/codecs/librm/rm.h')

diff --git a/lib/rbcodec/codecs/librm/rm.h b/lib/rbcodec/codecs/librm/rm.h
new file mode 100644
index 0000000000..c4a4e3a77e
--- /dev/null
+++ b/lib/rbcodec/codecs/librm/rm.h
@@ -0,0 +1,102 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Mohamed Tarek
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef _RM_H
+#define _RM_H
+
+#include <stdio.h>
+#include <inttypes.h>
+#include "bytestream.h"
+
+#define MAX_EXTRADATA_SIZE 16
+#define DATA_HEADER_SIZE 18
+#define PACKET_HEADER_SIZE 12
+
+enum codecs {
+    CODEC_COOK, 
+    CODEC_AAC,
+    CODEC_AC3,
+    CODEC_ATRAC
+};
+
+typedef struct rm_packet
+{
+    uint8_t *frames[100]; /* Pointers to ordered audio frames in buffer */
+    uint16_t version;
+    uint16_t length;
+    uint32_t timestamp;
+    uint16_t stream_number;
+    uint8_t  flags;
+
+#ifdef TEST
+    uint8_t  data[30000]; /* Reordered data. No malloc, hence the size */
+#endif
+}RMPacket;
+    
+typedef struct rm_context 
+{
+    /* Demux Context */
+    int old_format;
+    int current_stream;
+    int remaining_len;
+    int audio_stream_num; /*< Stream number for audio packets*/
+    int audio_pkt_cnt; /* Output packet counter*/
+
+    /* Stream Variables */
+    uint32_t data_offset;
+    uint32_t duration;
+    uint32_t audiotimestamp; /* Audio packet timestamp*/
+    uint16_t sub_packet_cnt; /* Subpacket counter, used while reading */
+    uint16_t sub_packet_size, sub_packet_h, coded_framesize; /* Descrambling parameters from container */
+    uint16_t audio_framesize; /* Audio frame size from container */
+    uint16_t sub_packet_lengths[16]; /* Length of each subpacket */
+
+    /* Codec Context */
+    enum codecs codec_type; 
+    uint16_t block_align;
+    uint32_t nb_packets;
+    int frame_number;
+    uint16_t sample_rate;
+    uint16_t nb_channels;
+    uint32_t bit_rate;
+    uint16_t flags;
+
+    /*codec extradata*/
+    uint32_t extradata_size;
+    uint8_t  codec_extradata[MAX_EXTRADATA_SIZE];    
+
+} RMContext;
+
+int real_parse_header(int fd, RMContext *rmctx);
+
+/* Get a (sub_packet_h*frames_per_packet) number of audio frames from a memory buffer */
+int rm_get_packet(uint8_t **src,RMContext *rmctx, RMPacket *pkt);
+
+#ifdef TEST
+
+int filesize(int fd);
+void advance_buffer(uint8_t **buf, int val);
+
+/* Get a (sub_packet_h*frames_per_packet) number of audio frames from a file descriptor */
+void rm_get_packet_fd(int fd,RMContext *rmctx, RMPacket *pkt);
+
+#endif /* TEST */
+
+#endif /* _RM_H */
-- 
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