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diractab: expose the maximum quantization index as a macro

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Prevents having to have random magic values in the decoder and a
separate macro in the encoder.

Signed-off-by: Rostislav Pehlivanov <rpehlivanov@obe.tv>
This commit is contained in:
Rostislav Pehlivanov
2016-06-23 18:06:59 +01:00
committed by Rostislav Pehlivanov
parent b9c6c5f453
commit 09d89d9406
3 changed files with 9 additions and 10 deletions
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9
libavcodec/vc2enc.c
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@ -29,11 +29,8 @@
#include "vc2enc_dwt.h"
#include "diractab.h"
/* Quantizations above this usually zero coefficients and lower the quality */
#define MAX_QUANT_INDEX FF_ARRAY_ELEMS(ff_dirac_qscale_tab)
/* Total range is -COEF_LUT_TAB to +COEFF_LUT_TAB, but total tab size is half
* (COEF_LUT_TAB*MAX_QUANT_INDEX) since the sign is appended during encoding */
* (COEF_LUT_TAB*DIRAC_MAX_QUANT_INDEX), as the sign is appended during encoding */
#define COEF_LUT_TAB 2048
/* The limited size resolution of each slice forces us to do this */
@ -109,7 +106,7 @@ typedef struct Plane {
typedef struct SliceArgs {
PutBitContext pb;
int cache[MAX_QUANT_INDEX];
int cache[DIRAC_MAX_QUANT_INDEX];
void *ctx;
int x;
int y;
@ -1074,7 +1071,7 @@ static av_cold int vc2_encode_init(AVCodecContext *avctx)
s->picture_number = 0;
/* Total allowed quantization range */
s->q_ceil = MAX_QUANT_INDEX;
s->q_ceil = DIRAC_MAX_QUANT_INDEX;
s->ver.major = 2;
s->ver.minor = 0;