Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
libavcodec/mpc7.c | 12 ++++++------
libavcodec/mpc7data.h | 4 ++--
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/libavcodec/mpc7.c b/libavcodec/mpc7.c
index 532ea113c2..3c1a8578dd 100644
--- a/libavcodec/mpc7.c
+++ b/libavcodec/mpc7.c
@@ -98,10 +98,10 @@ static av_cold int mpc7_decode_init(AVCodecContext * avctx)
&mpc7_scfi[0], 2, 1, 0, 0, 1 <<
MPC7_SCFI_BITS);
INIT_VLC_STATIC_FROM_LENGTHS(&dscf_vlc, MPC7_DSCF_BITS, MPC7_DSCF_SIZE,
&mpc7_dscf[1], 2,
- &mpc7_dscf[0], 2, 1, 0, 0, 1 <<
MPC7_DSCF_BITS);
+ &mpc7_dscf[0], 2, 1, -7, 0, 1 <<
MPC7_DSCF_BITS);
INIT_VLC_STATIC_FROM_LENGTHS(&hdr_vlc, MPC7_HDR_BITS, MPC7_HDR_SIZE,
&mpc7_hdr[1], 2,
- &mpc7_hdr[0], 2, 1, 0, 0, 1 << MPC7_HDR_BITS);
+ &mpc7_hdr[0], 2, 1, -5, 0, 1 <<
MPC7_HDR_BITS);
for(i = 0; i < MPC7_QUANT_VLC_TABLES; i++){
for(j = 0; j < 2; j++){
quant_vlc[i][j].table = quant_table;
@@ -110,7 +110,7 @@ static av_cold int mpc7_decode_init(AVCodecContext * avctx)
ff_init_vlc_from_lengths(&quant_vlc[i][j], 9,
mpc7_quant_vlc_sizes[i],
&raw_quant_table[1], 2,
&raw_quant_table[0], 2, 1,
- 0, INIT_VLC_USE_NEW_STATIC);
+ mpc7_quant_vlc_off[i],
INIT_VLC_USE_NEW_STATIC);
raw_quant_table += 2 * mpc7_quant_vlc_sizes[i];
}
}
@@ -151,7 +151,7 @@ static inline void idx_to_quant(MPCContext *c,
GetBitContext *gb, int idx, int *
case 3: case 4: case 5: case 6: case 7:
i1 = get_bits1(gb);
for(i = 0; i < SAMPLES_PER_BAND; i++)
- *dst++ = get_vlc2(gb, quant_vlc[idx-1][i1].table, 9, 2) -
mpc7_quant_vlc_off[idx-1];
+ *dst++ = get_vlc2(gb, quant_vlc[idx-1][i1].table, 9, 2);
break;
case 8: case 9: case 10: case 11: case 12:
case 13: case 14: case 15: case 16: case 17:
@@ -166,7 +166,7 @@ static inline void idx_to_quant(MPCContext *c,
GetBitContext *gb, int idx, int *
static int get_scale_idx(GetBitContext *gb, int ref)
{
- int t = get_vlc2(gb, dscf_vlc.table, MPC7_DSCF_BITS, 1) - 7;
+ int t = get_vlc2(gb, dscf_vlc.table, MPC7_DSCF_BITS, 1);
if (t == 8)
return get_bits(gb, 6);
return ref + t;
@@ -222,7 +222,7 @@ static int mpc7_decode_frame(AVCodecContext * avctx, void
*data,
for(i = 0; i <= c->maxbands; i++){
for(ch = 0; ch < 2; ch++){
int t = 4;
- if(i) t = get_vlc2(&gb, hdr_vlc.table, MPC7_HDR_BITS, 1) - 5;
+ if(i) t = get_vlc2(&gb, hdr_vlc.table, MPC7_HDR_BITS, 1);
if(t == 4) bands[i].res[ch] = get_bits(&gb, 4);
else bands[i].res[ch] = bands[i-1].res[ch] + t;
if (bands[i].res[ch] < -1 || bands[i].res[ch] > 17) {
diff --git a/libavcodec/mpc7data.h b/libavcodec/mpc7data.h
index b578cbdb27..ee77393fce 100644
--- a/libavcodec/mpc7data.h
+++ b/libavcodec/mpc7data.h
@@ -55,8 +55,8 @@ static const uint8_t
mpc7_quant_vlc_sizes[MPC7_QUANT_VLC_TABLES] = {
27, 25, 7, 9, 15, 31, 63
};
-static const uint8_t mpc7_quant_vlc_off[MPC7_QUANT_VLC_TABLES] = {
- 0, 0, 3, 4, 7, 15, 31
+static const int8_t mpc7_quant_vlc_off[MPC7_QUANT_VLC_TABLES] = {
+ 0, 0, -3, -4, -7, -15, -31
};
static const uint8_t mpc7_quant_vlcs[177 * 2 * 2] = {
--
2.25.1
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