RepoMirrors/mpv
1
0
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2024-12-24 15:52:25 +00:00
Code Issues Releases Wiki Activity

libavcodec sync; zigzag_direct and block_permute_op replaced by non-globals in MpegEncContext

Browse Source 
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7568 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rik 2002-09-30 21:46:54 +00:00
parent 88ab61eaab
commit c0091278d8
1 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
libvo/jpeg_enc.c
View File

@ -83,7 +83,7 @@ static void convert_matrix(MpegEncContext *s, int (*qmat)[64],
int i;
if (s->fdct == ff_jpeg_fdct_islow) {
for (i = 0; i < 64; i++) {
const int j = block_permute_op(i);
const int j = s->idct_permutation[i];
/* 16 <= qscale * quant_matrix[i] <= 7905
* 19952 <= aanscales[i] * \
* qscale * quant_matrix[i] <= 205026
@ -96,7 +96,7 @@ static void convert_matrix(MpegEncContext *s, int (*qmat)[64],
}
} else if (s->fdct == fdct_ifast) {
for(i=0;i<64;i++) {
const int j= block_permute_op(i);
const int j = s->idct_permutation[i];
/* 16 <= qscale * quant_matrix[i] <= 7905 */
/* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
/* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
@ -107,13 +107,14 @@ static void convert_matrix(MpegEncContext *s, int (*qmat)[64],
}
} else {
for(i=0;i<64;i++) {
const int j = s->idct_permutation[i];
/* We can safely suppose that 16 <= quant_matrix[i] <= 255
So 16 <= qscale * quant_matrix[i] <= 7905
so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
so 32768 >= (1<<19) / (qscale * quant_matrix[i]) >= 67
*/
qmat [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
qmat16[qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[block_permute_op(i)]);
qmat16[qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[j]);
if(qmat16[qscale][i]==0 || qmat16[qscale][i]==128*256) qmat16[qscale][i]=128*256-1;
@ -178,7 +179,7 @@ static void encode_block(MpegEncContext *s, DCTELEM *block, int n)
run = 0;
last_index = s->block_last_index[n];
for(i=1;i<=last_index;i++) {
j = zigzag_direct[i];
j = s->intra_scantable.permutated[i];
val = block[j];
if (val == 0) {
run++;
@ -220,7 +221,7 @@ static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index
const int minlevel= s->min_qcoeff;
for(i=0; i<=last_index; i++){
const int j = zigzag_direct[i];
const int j = s->intra_scantable.permutated[i];
int level = block[j];
if (level>maxlevel) level=maxlevel;
@ -362,8 +363,8 @@ jpeg_enc_t *jpeg_enc_init(int w, int h, int y_psize, int y_rsize,
j->s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
for (i = 1; i < 64; i++)
j->s->intra_matrix[i] =
(ff_mpeg1_default_intra_matrix[i]*j->s->qscale) >> 3;
j->s->intra_matrix[i] = CLAMP_TO_8BIT(
(ff_mpeg1_default_intra_matrix[i]*j->s->qscale) >> 3);
convert_matrix(j->s, j->s->q_intra_matrix, j->s->q_intra_matrix16,
j->s->q_intra_matrix16_bias,
j->s->intra_matrix, j->s->intra_quant_bias);