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| author | Mans Rullgard <mans@mansr.com> | 2012-02-01 22:25:10 +0000 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2012-02-02 18:50:42 +0000 |
| commit | cd2f98f365dfd83f0debac030413e57a73c7ecd5 (patch) | |
| tree | c7064943197aa018801aff51fc1c47174590b50d /libavcodec | |
| parent | 148bc235b0dbf5e3dcd12fc4480475008a719576 (diff) | |
| download | ffmpeg-cd2f98f365dfd83f0debac030413e57a73c7ecd5.tar.gz | |
ARM: ac3: fix ac3_bit_alloc_calc_bap_armv6
This function was broken when the start bin was not at the start
of a band.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/arm/ac3dsp_armv6.S | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/libavcodec/arm/ac3dsp_armv6.S b/libavcodec/arm/ac3dsp_armv6.S index b6aee867b3..df8bfbaa03 100644 --- a/libavcodec/arm/ac3dsp_armv6.S +++ b/libavcodec/arm/ac3dsp_armv6.S @@ -34,24 +34,23 @@ function ff_ac3_bit_alloc_calc_bap_armv6, export=1 add r0, r0, r4, lsl #1 @ mask + band add r4, lr, r4 add r7, r7, r2 @ bap + start - ldrb r10, [r4], #1 1: ldrsh r9, [r0], #2 @ mask[band] mov r8, #0xff0 sub r9, r9, r12 @ - snr_offset - mov r11, r10 - ldrb r10, [r4], #1 @ band_start_tab[band++] + ldrb r10, [r4, #1]! @ band_start_tab[++band] subs r9, r9, r5 @ - floor it lt movlt r9, #0 cmp r10, r3 @ - end and r9, r9, r8, lsl #1 @ & 0x1fe0 ite gt - subgt r8, r3, r11 - suble r8, r10, r11 + subgt r8, r3, r2 + suble r8, r10, r2 + mov r2, r10 add r9, r9, r5 @ + floor => m tst r8, #1 - add r2, r7, r8 + add r11, r7, r8 bne 3f b 5f 2: @@ -65,9 +64,9 @@ function ff_ac3_bit_alloc_calc_bap_armv6, export=1 ldrb lr, [r6, lr] strb r8, [r7], #1 @ bap[bin] strb lr, [r7], #1 -5: cmp r7, r2 +5: cmp r7, r11 blo 2b - cmp r3, r11 + cmp r3, r10 bgt 1b pop {r4-r11,pc} 3: |