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vp3: Embed idct_permutation array directly in VP3DecoderContext

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This makes the vp3 decoder less dependent on dsputil, and will aid
in making it (eventually) dsputil-independent.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Ronald S. Bultje 2013-03-09 09:08:36 -08:00 committed by Martin Storsjö
parent 610b18e2e3
commit 18df366a18
1 changed files with 5 additions and 3 deletions
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8
libavcodec/vp3.c
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@ -135,6 +135,7 @@ typedef struct Vp3DecodeContext {
ThreadFrame last_frame;
ThreadFrame current_frame;
int keyframe;
uint8_t idct_permutation[64];
DSPContext dsp;
VideoDSPContext vdsp;
VP3DSPContext vp3dsp;
@ -374,7 +375,8 @@ static void init_dequantizer(Vp3DecodeContext *s, int qpi)
int qmin= 8<<(inter + !i);
int qscale= i ? ac_scale_factor : dc_scale_factor;
s->qmat[qpi][inter][plane][s->dsp.idct_permutation[i]]= av_clip((qscale * coeff)/100 * 4, qmin, 4096);
s->qmat[qpi][inter][plane][s->idct_permutation[i]] =
av_clip((qscale * coeff) / 100 * 4, qmin, 4096);
}
// all DC coefficients use the same quant so as not to interfere with DC prediction
s->qmat[qpi][inter][plane][0] = s->qmat[0][inter][plane][0];
@ -1698,8 +1700,8 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
ff_videodsp_init(&s->vdsp, 8);
ff_vp3dsp_init(&s->vp3dsp, avctx->flags);
ff_init_scantable_permutation(s->dsp.idct_permutation, s->vp3dsp.idct_perm);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
ff_init_scantable_permutation(s->idct_permutation, s->vp3dsp.idct_perm);
ff_init_scantable(s->idct_permutation, &s->scantable, ff_zigzag_direct);
/* initialize to an impossible value which will force a recalculation
* in the first frame decode */