xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-26 13:00:33 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

bink: simplify how quantization matrices are passed to read_dct_coeffs()

Browse Source 
Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Peter Ross 2011-02-13 03:33:49 +00:00 committed by Mans Rullgard
parent f344903ca5
commit cb62510cab
1 changed files with 8 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
libavcodec/bink.c
View File

@ -571,24 +571,17 @@ static inline int binkb_get_value(BinkContext *c, int bundle_num)
return ret;
}
typedef const uint32_t quant_matrices[16][64];
static const quant_matrices * bink_quant_matrices[2][2] = {
{ &bink_inter_quant, &bink_intra_quant },
{ &binkb_inter_quant, &binkb_intra_quant },
};
/**
* Read 8x8 block of DCT coefficients.
*
* @param gb context for reading bits
* @param block place for storing coefficients
* @param scan scan order table
* @param is_binkb use version 'b' quantizer matrices
* @param is_intra tells what set of quantizer matrices to use
* @param quant_matrices quantization matrices
* @return 0 for success, negative value in other cases
*/
static int read_dct_coeffs(GetBitContext *gb, DCTELEM block[64], const uint8_t *scan,
int is_binkb, int is_intra, int q)
const uint32_t quant_matrices[16][64], int q)
{
int coef_list[128];
int mode_list[128];
@ -674,7 +667,7 @@ static int read_dct_coeffs(GetBitContext *gb, DCTELEM block[64], const uint8_t *
quant_idx = q;
}
quant = (*bink_quant_matrices[is_binkb][is_intra])[quant_idx];
quant = quant_matrices[quant_idx];
block[0] = (block[0] * quant[0]) >> 11;
for (i = 0; i < coef_count; i++) {
@ -855,7 +848,7 @@ static int binkb_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
c->dsp.clear_block(block);
block[0] = binkb_get_value(c, BINKB_SRC_INTRA_DC);
qp = binkb_get_value(c, BINKB_SRC_INTRA_Q);
read_dct_coeffs(gb, block, c->scantable.permutated, 1, 1, qp);
read_dct_coeffs(gb, block, c->scantable.permutated, binkb_intra_quant, qp);
c->dsp.idct_put(dst, stride, block);
break;
case 3:
@ -888,7 +881,7 @@ static int binkb_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
c->dsp.clear_block(block);
block[0] = binkb_get_value(c, BINKB_SRC_INTER_DC);
qp = binkb_get_value(c, BINKB_SRC_INTER_Q);
read_dct_coeffs(gb, block, c->scantable.permutated, 1, 0, qp);
read_dct_coeffs(gb, block, c->scantable.permutated, binkb_inter_quant, qp);
c->dsp.idct_add(dst, stride, block);
break;
case 5:
@ -1028,7 +1021,7 @@ static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
case INTRA_BLOCK:
c->dsp.clear_block(block);
block[0] = get_value(c, BINK_SRC_INTRA_DC);
read_dct_coeffs(gb, block, c->scantable.permutated, 0, 1, -1);
read_dct_coeffs(gb, block, c->scantable.permutated, bink_intra_quant, -1);
c->dsp.idct(block);
c->dsp.put_pixels_nonclamped(block, ublock, 8);
break;
@ -1112,7 +1105,7 @@ static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
case INTRA_BLOCK:
c->dsp.clear_block(block);
block[0] = get_value(c, BINK_SRC_INTRA_DC);
read_dct_coeffs(gb, block, c->scantable.permutated, 0, 1, -1);
read_dct_coeffs(gb, block, c->scantable.permutated, bink_intra_quant, -1);
c->dsp.idct_put(dst, stride, block);
break;
case FILL_BLOCK:
@ -1126,7 +1119,7 @@ static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
c->dsp.clear_block(block);
block[0] = get_value(c, BINK_SRC_INTER_DC);
read_dct_coeffs(gb, block, c->scantable.permutated, 0, 0, -1);
read_dct_coeffs(gb, block, c->scantable.permutated, bink_inter_quant, -1);
c->dsp.idct_add(dst, stride, block);
break;
case PATTERN_BLOCK: