wma: Remove pointless/incorrect sanity checks.

[paraslash.git] / wmadec_filter.c

diff --git a/wmadec_filter.c b/wmadec_filter.c
index 18997aec47ea67ba0740e7d7dd844c48f9e5db22..a76f77df0dbe18b018a3cdb64d1703bb1673b975 100644 (file)
--- a/wmadec_filter.c
+++ b/wmadec_filter.c
@@ -28,6 +28,7 @@
 #include "sched.h"
 #include "buffer_tree.h"
 #include "filter.h"
+#include "portable_io.h"
 #include "bitstream.h"
 #include "imdct.h"
 #include "wma.h"
@@ -158,23 +159,6 @@ static void sine_window_init(float *window, int n)
                window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n)));
 }
 
-static void wmadec_cleanup(struct private_wmadec_data *pwd)
-{
-       int i;
-
-       for (i = 0; i < pwd->nb_block_sizes; i++)
-               imdct_end(pwd->mdct_ctx[i]);
-       if (pwd->ahi.use_exp_vlc)
-               free_vlc(&pwd->exp_vlc);
-       if (pwd->use_noise_coding)
-               free_vlc(&pwd->hgain_vlc);
-       for (i = 0; i < 2; i++) {
-               free_vlc(&pwd->coef_vlc[i]);
-               free(pwd->run_table[i]);
-               free(pwd->level_table[i]);
-       }
-}
-
 static void init_coef_vlc(struct vlc *vlc, uint16_t **prun_table,
                uint16_t **plevel_table, const struct coef_vlc_table *vlc_table)
 {
@@ -580,7 +564,7 @@ static int decode_exp_vlc(struct private_wmadec_data *pwd, int ch)
        last_exp = 36;
 
        while (q < q_end) {
-               code = get_vlc(&pwd->gb, pwd->exp_vlc.table, EXPVLCBITS);
+               code = get_vlc(&pwd->gb, &pwd->exp_vlc);
                if (code < 0)
                        return code;
                /* NOTE: this offset is the same as MPEG4 AAC ! */
@@ -707,8 +691,7 @@ static int compute_high_band_values(struct private_wmadec_data *pwd,
                        if (val == (int)0x80000000)
                                val = get_bits(&pwd->gb, 7) - 19;
                        else {
-                               int code = get_vlc(&pwd->gb,
-                                       pwd->hgain_vlc.table, HGAINVLCBITS);
+                               int code = get_vlc(&pwd->gb, &pwd->hgain_vlc);
                                if (code < 0)
                                        return code;
                                val += code - 18;
@@ -939,7 +922,7 @@ static int wma_decode_block(struct private_wmadec_data *pwd)
                eptr = ptr + nb_coefs[ch];
                memset(ptr, 0, pwd->block_len * sizeof(int16_t));
                for (;;) {
-                       code = get_vlc(&pwd->gb, coef_vlc->table, VLCBITS);
+                       code = get_vlc(&pwd->gb, coef_vlc);
                        if (code < 0)
                                return code;
                        if (code == 1) /* EOB */
@@ -1063,16 +1046,7 @@ static int wma_decode_superframe(struct private_wmadec_data *pwd, void *data,
        int ret;
        int16_t *samples;
 
-       if (buf_size == 0) {
-               pwd->last_superframe_len = 0;
-               *data_size = 0;
-               return 0;
-       }
-       if (buf_size < pwd->ahi.block_align) {
-               *data_size = 0;
-               return 0;
-       }
-       buf_size = pwd->ahi.block_align;
+       buf_size = pwd->ahi.packet_size - WMA_FRAME_SKIP;
        samples = data;
        init_get_bits(&pwd->gb, buf, buf_size);
        if (pwd->ahi.use_bit_reservoir) {
@@ -1173,10 +1147,21 @@ fail:
 static void wmadec_close(struct filter_node *fn)
 {
        struct private_wmadec_data *pwd = fn->private_data;
+       int i;
 
        if (!pwd)
                return;
-       wmadec_cleanup(pwd);
+       for (i = 0; i < pwd->nb_block_sizes; i++)
+               imdct_end(pwd->mdct_ctx[i]);
+       if (pwd->ahi.use_exp_vlc)
+               free_vlc(&pwd->exp_vlc);
+       if (pwd->use_noise_coding)
+               free_vlc(&pwd->hgain_vlc);
+       for (i = 0; i < 2; i++) {
+               free_vlc(&pwd->coef_vlc[i]);
+               free(pwd->run_table[i]);
+               free(pwd->level_table[i]);
+       }
        free(fn->private_data);
        fn->private_data = NULL;
 }