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evrcdec: use memmove() instead of memcpy() when regions can overlap.

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This occurs also with valid files.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-04-18 16:19:10 +02:00
parent 90a56ebbe5
commit 5ae484e350
1 changed files with 4 additions and 4 deletions
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8
libavcodec/evrcdec.c
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@ -640,7 +640,7 @@ static void postfilter(EVRCContext *e, float *in, const float *coeff,
/* Short term postfilter */
synthesis_filter(temp, wcoef2, e->postfilter_iir, length, out);
memcpy(e->postfilter_residual,
memmove(e->postfilter_residual,
e->postfilter_residual + length, ACB_SIZE * sizeof(float));
}
@ -714,7 +714,7 @@ static void frame_erasure(EVRCContext *e, float *samples)
e->pitch[ACB_SIZE + j] = e->energy_vector[i];
}
memcpy(e->pitch, e->pitch + subframe_size, ACB_SIZE * sizeof(float));
memmove(e->pitch, e->pitch + subframe_size, ACB_SIZE * sizeof(float));
if (e->bitrate != RATE_QUANT && e->avg_acb_gain < 0.4) {
f = 0.1 * e->avg_fcb_gain;
@ -814,7 +814,7 @@ static int evrc_decode_frame(AVCodecContext *avctx, void *data,
interpolate_delay(idelay, delay, e->prev_pitch_delay, i);
acb_excitation(e, e->pitch + ACB_SIZE, e->avg_acb_gain, idelay, subframe_size);
memcpy(e->pitch, e->pitch + subframe_size, ACB_SIZE * sizeof(float));
memmove(e->pitch, e->pitch + subframe_size, ACB_SIZE * sizeof(float));
}
}
@ -872,7 +872,7 @@ static int evrc_decode_frame(AVCodecContext *avctx, void *data,
e->pitch[ACB_SIZE + j] = e->energy_vector[i];
}
memcpy(e->pitch, e->pitch + subframe_size, ACB_SIZE * sizeof(float));
memmove(e->pitch, e->pitch + subframe_size, ACB_SIZE * sizeof(float));
synthesis_filter(e->pitch + ACB_SIZE, ilpc,
e->synthesis, subframe_size, tmp);