afq: update remaining samples variable.

[ffmpeg] / libavcodec / mpegaudiodec.c

diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index 85079761df3ae7a7298d566afabecdf1cff0c9ad..6ef1f6b427499a38300014cc34490af772c5088d 100644 (file)
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -26,6 +26,7 @@
 
 #include "libavutil/audioconvert.h"
 #include "libavutil/avassert.h"
+#include "libavutil/libm.h"
 #include "avcodec.h"
 #include "get_bits.h"
 #include "mathops.h"
@@ -204,6 +205,8 @@ static void ff_compute_band_indexes(MPADecodeContext *s, GranuleDef *g)
 {
     if (g->block_type == 2) {
         if (g->switch_point) {
+            if(s->sample_rate_index == 8)
+                av_log_ask_for_sample(s->avctx, "switch point in 8khz\n");
             /* if switched mode, we handle the 36 first samples as
                 long blocks.  For 8000Hz, we handle the 72 first
                 exponents as long blocks */
@@ -212,7 +215,7 @@ static void ff_compute_band_indexes(MPADecodeContext *s, GranuleDef *g)
             else
                 g->long_end = 6;
 
-            g->short_start = 2 + (s->sample_rate_index != 8);
+            g->short_start = 3;
         } else {
             g->long_end    = 0;
             g->short_start = 0;
@@ -394,7 +397,7 @@ static av_cold void decode_init_static(void)
 
         for (j = 0; j < 2; j++) {
             e = -(j + 1) * ((i + 1) >> 1);
-            f = pow(2.0, e / 4.0);
+            f = exp2(e / 4.0);
             k = i & 1;
             is_table_lsf[j][k ^ 1][i] = FIXR(f);
             is_table_lsf[j][k    ][i] = FIXR(1.0);
@@ -889,9 +892,7 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g,
             int pos = get_bits_count(&s->gb);
 
             if (pos >= end_pos){
-//                av_log(NULL, AV_LOG_ERROR, "pos: %d %d %d %d\n", pos, end_pos, end_pos2, s_index);
                 switch_buffer(s, &pos, &end_pos, &end_pos2);
-//                av_log(NULL, AV_LOG_ERROR, "new pos: %d %d\n", pos, end_pos);
                 if (pos >= end_pos)
                     break;
             }
@@ -965,9 +966,7 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g,
                     s_index=0;
                 break;
             }
-//                av_log(NULL, AV_LOG_ERROR, "pos2: %d %d %d %d\n", pos, end_pos, end_pos2, s_index);
             switch_buffer(s, &pos, &end_pos, &end_pos2);
-//                av_log(NULL, AV_LOG_ERROR, "new pos2: %d %d %d\n", pos, end_pos, s_index);
             if (pos >= end_pos)
                 break;
         }
@@ -990,7 +989,6 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g,
     }
     /* skip extension bits */
     bits_left = end_pos2 - get_bits_count(&s->gb);
-//av_log(NULL, AV_LOG_ERROR, "left:%d buf:%p\n", bits_left, s->in_gb.buffer);
     if (bits_left < 0 && (s->err_recognition & (AV_EF_BUFFER|AV_EF_COMPLIANT))) {
         av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left);
         s_index=0;
@@ -1403,8 +1401,8 @@ static int mp_decode_layer3(MPADecodeContext *s)
         int extrasize = av_clip(get_bits_left(&s->gb) >> 3, 0, EXTRABYTES);
         av_assert1((get_bits_count(&s->gb) & 7) == 0);
         /* now we get bits from the main_data_begin offset */
-        av_dlog(s->avctx, "seekback: %d\n", main_data_begin);
-    //av_log(NULL, AV_LOG_ERROR, "backstep:%d, lastbuf:%d\n", main_data_begin, s->last_buf_size);
+        av_dlog(s->avctx, "seekback:%d, lastbuf:%d\n",
+                main_data_begin, s->last_buf_size);
 
         memcpy(s->last_buf + s->last_buf_size, ptr, extrasize);
         s->in_gb = s->gb;