X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=wmadec_filter.c;h=220dc40c22a0810d6ff7ac4484b7ea09e3346a67;hp=5106724d90778097c80fa3a1e6a44578a3770ac6;hb=e55d09a5899d5948fe5c4fec42ab53d1c1f924b4;hpb=97dbfe66e1697640edcb987f17faed84536528e4

diff --git a/wmadec_filter.c b/wmadec_filter.c
index 5106724d..220dc40c 100644
--- a/wmadec_filter.c
+++ b/wmadec_filter.c
@@ -71,9 +71,10 @@ struct private_wmadec_data {
 	int use_exp_vlc;
 	/** Whether perceptual noise is added. */
 	int use_noise_coding;
+	/** Depends on number of the bits per second and the frame length. */
 	int byte_offset_bits;
+	/** Only used if use_exp_vlc is true. */
 	struct vlc exp_vlc;
-	int exponent_sizes[BLOCK_NB_SIZES];
 	uint16_t exponent_bands[BLOCK_NB_SIZES][25];
 	/** The index of the first coef in high band. */
 	int high_band_start[BLOCK_NB_SIZES];
@@ -227,8 +228,9 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd,
 	const uint8_t *table;
 
 	for (k = 0; k < pwd->nb_block_sizes; k++) {
-		block_len = pwd->frame_len >> k;
+		int exponent_size;
 
+		block_len = pwd->frame_len >> k;
 		table = NULL;
 		a = pwd->frame_len_bits - BLOCK_MIN_BITS - k;
 		if (a < 3) {
@@ -243,7 +245,7 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd,
 			n = *table++;
 			for (i = 0; i < n; i++)
 				pwd->exponent_bands[k][i] = table[i];
-			pwd->exponent_sizes[k] = n;
+			exponent_size = n;
 		} else {
 			j = 0;
 			lpos = 0;
@@ -260,7 +262,7 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd,
 					break;
 				lpos = pos;
 			}
-			pwd->exponent_sizes[k] = j;
+			exponent_size = j;
 		}
 
 		/* max number of coefs */
@@ -268,7 +270,7 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd,
 		/* high freq computation */
 		pwd->high_band_start[k] = (int) ((block_len * 2 * high_freq)
 			/ ahi->sample_rate + 0.5);
-		n = pwd->exponent_sizes[k];
+		n = exponent_size;
 		j = 0;
 		pos = 0;
 		for (i = 0; i < n; i++) {
@@ -502,9 +504,8 @@ static int wma_decode_init(char *initial_buf, int len, struct private_wmadec_dat
 
 	if (pwd->use_exp_vlc) {
 		PARA_INFO_LOG("using exp_vlc\n");
-		init_vlc(&pwd->exp_vlc, EXPVLCBITS,
-		sizeof(wma_scale_huffbits), wma_scale_huffbits,
-		wma_scale_huffcodes, 4);
+		init_vlc(&pwd->exp_vlc, EXPVLCBITS, sizeof(wma_scale_huffbits),
+			wma_scale_huffbits, wma_scale_huffcodes, 4);
 	} else {
 		PARA_INFO_LOG("using curve\n");
 		wma_lsp_to_curve_init(pwd, pwd->frame_len);