diff options
Diffstat (limited to 'libavcodec/mpegaudiodec.c')
| -rw-r--r-- | libavcodec/mpegaudiodec.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c index 64cbba8e44..553398acb7 100644 --- a/libavcodec/mpegaudiodec.c +++ b/libavcodec/mpegaudiodec.c @@ -174,9 +174,12 @@ static void ff_region_offset2size(GranuleDef *g) static void ff_init_short_region(MPADecodeContext *s, GranuleDef *g) { - if (g->block_type == 2) - g->region_size[0] = (36 / 2); - else { + if (g->block_type == 2) { + if (s->sample_rate_index != 8) + g->region_size[0] = (36 / 2); + else + g->region_size[0] = (72 / 2); + } else { if (s->sample_rate_index <= 2) g->region_size[0] = (36 / 2); else if (s->sample_rate_index != 8) @@ -201,14 +204,12 @@ static void ff_compute_band_indexes(MPADecodeContext *s, GranuleDef *g) if (g->block_type == 2) { if (g->switch_point) { /* if switched mode, we handle the 36 first samples as - long blocks. For 8000Hz, we handle the 48 first - exponents as long blocks (XXX: check this!) */ + long blocks. For 8000Hz, we handle the 72 first + exponents as long blocks */ if (s->sample_rate_index <= 2) g->long_end = 8; - else if (s->sample_rate_index != 8) - g->long_end = 6; else - g->long_end = 4; /* 8000 Hz */ + g->long_end = 6; g->short_start = 2 + (s->sample_rate_index != 8); } else { @@ -1018,7 +1019,7 @@ static void reorder_block(MPADecodeContext *s, GranuleDef *g) if (s->sample_rate_index != 8) ptr = g->sb_hybrid + 36; else - ptr = g->sb_hybrid + 48; + ptr = g->sb_hybrid + 72; } else { ptr = g->sb_hybrid; } |