tweak BT + first AirPlay commit

components/raop/alac.h

@@ -0,0 +1,55 @@
+#ifndef __ALAC__DECOMP_H
+#define __ALAC__DECOMP_H
+
+typedef struct alac_file alac_file;
+
+alac_file *create_alac(int samplesize, int numchannels);
+void delete_alac(alac_file *alac);
+void decode_frame(alac_file *alac,
+                  unsigned char *inbuffer,
+                  void *outbuffer, int *outputsize);
+void alac_set_info(alac_file *alac, char *inputbuffer);
+void allocate_buffers(alac_file *alac);
+
+struct alac_file
+{
+    unsigned char *input_buffer;
+    int input_buffer_bitaccumulator; /* used so we can do arbitary
+                                        bit reads */
+
+    int samplesize;
+    int numchannels;
+    int bytespersample;
+
+
+    /* buffers */
+    int32_t *predicterror_buffer_a;
+    int32_t *predicterror_buffer_b;
+
+    int32_t *outputsamples_buffer_a;
+    int32_t *outputsamples_buffer_b;
+
+    int32_t *uncompressed_bytes_buffer_a;
+    int32_t *uncompressed_bytes_buffer_b;
+
+
+
+  /* stuff from setinfo */
+  uint32_t setinfo_max_samples_per_frame; /* 0x1000 = 4096 */    /* max samples per frame? */
+  uint8_t setinfo_7a; /* 0x00 */
+  uint8_t setinfo_sample_size; /* 0x10 */
+  uint8_t setinfo_rice_historymult; /* 0x28 */
+  uint8_t setinfo_rice_initialhistory; /* 0x0a */
+  uint8_t setinfo_rice_kmodifier; /* 0x0e */
+  uint8_t setinfo_7f; /* 0x02 */
+  uint16_t setinfo_80; /* 0x00ff */
+  uint32_t setinfo_82; /* 0x000020e7 */ /* max sample size?? */
+  uint32_t setinfo_86; /* 0x00069fe4 */ /* bit rate (avarge)?? */
+  uint32_t setinfo_8a_rate; /* 0x0000ac44 */
+  /* end setinfo stuff */
+
+};
+
+
+#endif /* __ALAC__DECOMP_H */
+