X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=wma.h;h=18748dad9be2bdbf6faf1c7a1a49cba6d78e8fac;hp=c4703c25a5e9b7751b94e39c61e12c30053a7038;hb=84c3f9183674c561772dc4064e1b32a1e76ea8a3;hpb=226ce82aaccff7e74a6fadd028743b731a3744d2

diff --git a/wma.h b/wma.h
index c4703c25..18748dad 100644
--- a/wma.h
+++ b/wma.h
@@ -3,15 +3,24 @@
  *
  * Both para_filter and para_afh need to read the header.
  */
+
+/** Information stored in the asf header. */
 struct asf_header_info {
 	/** The size of the audio file header. */
 	int header_len;
+	/** Offset of the audio stream info header. */
 	int audio_stream_info_start;
+	/** Number of channels. */
 	uint8_t channels;
+	/** One of the 5 possible sample rates. */
 	uint16_t sample_rate;
+	/** Size of one data block. */
 	uint16_t block_align;
+	/** Bits per second. */
 	uint32_t bit_rate;
+	/** Further decoding information (ignored). */
 	uint32_t flags1;
+	/** Whether to use exp_vlc, bit reservoir, variable block len. */
 	uint16_t flags2;
 };
 
@@ -19,6 +28,8 @@ struct asf_header_info {
 int wma_log2(unsigned int v);
 const char *search_pattern(const char *pattern, int pattern_len,
 		const char *buf, int buf_size);
-int read_asf_header(char *buf, int loaded, struct asf_header_info *ahi);
-#define M_PI           3.14159265358979323846	/* pi */
+int read_asf_header(const char *buf, int loaded, struct asf_header_info *ahi);
+
 #define WMA_FRAME_SKIP 31
+#define DECLARE_ALIGNED(n,t,v)      t v __attribute__ ((aligned (n)))
+#define DECLARE_ALIGNED_16(t, v) DECLARE_ALIGNED(16, t, v)