X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=wma.h;h=15b9c5d492560f2c6532935460cc7ca4f38ca571;hp=c4703c25a5e9b7751b94e39c61e12c30053a7038;hb=f2940b2fbde865256bc35c74e3bd624d2ff48d2e;hpb=226ce82aaccff7e74a6fadd028743b731a3744d2

diff --git a/wma.h b/wma.h
index c4703c25..15b9c5d4 100644
--- a/wma.h
+++ b/wma.h
@@ -1,3 +1,5 @@
+/** \file wma.h The asf_header structure and public wma function declarations. */
+
 /**
  * Information contained in an asf audio file header.
  *
@@ -6,19 +8,32 @@
 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;
+	/** Encodes exp_vlc, bit reservoir, vbl, number of block sizes. */
 	uint16_t flags2;
+ 	/** Whether exponents are coded with VLC codes. */
+	bool use_exp_vlc;
+ 	/** If false, a frame is equal to a superframe. */
+	bool use_bit_reservoir;
+	/** Whether blocks are of variable or of constant size. */
+	bool use_variable_block_len;
 };
 
 /* wma_common.c */
-int wma_log2(unsigned int v);
+__a_const 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