- Factor out container specific code from apps/codecs/wma.c.

- Create an independent asf packet-parsing library in apps/codecs/libasf.
- Modify wma.c to use the newly created libasf.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25780 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 42 insertions, 0 deletions

diff --git a/apps/codecs/libasf/asf.h b/apps/codecs/libasf/asf.h
new file mode 100644
index 0000000..03af2b0
--- /dev/null
+++ b/apps/codecs/libasf/asf.h
@@ -0,0 +1,42 @@
+#ifndef _ASF_H
+#define _ASF_H
+
+#include <inttypes.h>
+
+/* ASF codec IDs */
+#define ASF_CODEC_ID_WMAV1 0x160
+#define ASF_CODEC_ID_WMAV2 0x161
+
+enum asf_error_e {
+    ASF_ERROR_INTERNAL       = -1,  /* incorrect input to API calls */
+    ASF_ERROR_OUTOFMEM       = -2,  /* some malloc inside program failed */
+    ASF_ERROR_EOF            = -3,  /* unexpected end of file */
+    ASF_ERROR_IO             = -4,  /* error reading or writing to file */
+    ASF_ERROR_INVALID_LENGTH = -5,  /* length value conflict in input data */
+    ASF_ERROR_INVALID_VALUE  = -6,  /* other value conflict in input data */
+    ASF_ERROR_INVALID_OBJECT = -7,  /* ASF object missing or in wrong place */
+    ASF_ERROR_OBJECT_SIZE    = -8,  /* invalid ASF object size (too small) */
+    ASF_ERROR_SEEKABLE       = -9,  /* file not seekable */
+    ASF_ERROR_SEEK           = -10  /* file is seekable but seeking failed */
+};
+
+struct asf_waveformatex_s {
+    uint32_t packet_size;
+    int audiostream;
+    uint16_t codec_id;
+    uint16_t channels;
+    uint32_t rate;
+    uint32_t bitrate;
+    uint16_t blockalign;
+    uint16_t bitspersample;
+    uint16_t datalen;
+    uint8_t data[6];
+};
+typedef struct asf_waveformatex_s asf_waveformatex_t;
+
+int asf_read_packet(uint8_t** audiobuf, int* audiobufsize, int* packetlength, 
+                    asf_waveformatex_t* wfx, struct codec_api* ci);
+                    
+int asf_get_timestamp(int *duration, struct codec_api* ci);
+
+#endif