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ffmpeg.wasm-core
Commit 8257bf05 authored by Zdenek Kabelac's avatar Zdenek Kabelac
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* eliminating duplicated code from MPV_common_end 

* simplified indexing

Originally committed as revision 305 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 3232bc88
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Showing with 40 additions and 66 deletions
libavcodec/mpegvideo.c
View file @ 8257bf05
......@@ -228,34 +228,7 @@ int MPV_common_init(MpegEncContext *s)
s->context_initialized = 1;
return 0;
fail:
if (s->mb_type)
free(s->mb_type);
if (s->mb_var)
free(s->mb_var);
if (s->mv_table[0])
free(s->mv_table[0]);
if (s->mv_table[1])
free(s->mv_table[1]);
if (s->motion_val)
free(s->motion_val);
if (s->dc_val[0])
free(s->dc_val[0]);
if (s->ac_val[0])
free(s->ac_val[0]);
if (s->coded_block)
free(s->coded_block);
if (s->mbintra_table)
free(s->mbintra_table);
if (s->mbskip_table)
free(s->mbskip_table);
for(i=0;i<3;i++) {
if (s->last_picture_base[i])
free(s->last_picture_base[i]);
if (s->next_picture_base[i])
free(s->next_picture_base[i]);
if (s->aux_picture_base[i])
free(s->aux_picture_base[i]);
}
MPV_common_end(s);
return -1;
}
......@@ -274,17 +247,22 @@ void MPV_common_end(MpegEncContext *s)
free(s->mv_table[1]);
if (s->motion_val)
free(s->motion_val);
if (s->h263_pred) {
if (s->dc_val[0])
free(s->dc_val[0]);
if (s->ac_val[0])
free(s->ac_val[0]);
if (s->coded_block)
free(s->coded_block);
if (s->mbintra_table)
free(s->mbintra_table);
}
if (s->mbskip_table)
free(s->mbskip_table);
for(i=0;i<3;i++) {
free(s->last_picture_base[i]);
free(s->next_picture_base[i]);
if (s->last_picture_base[i])
free(s->last_picture_base[i]);
if (s->next_picture_base[i])
free(s->next_picture_base[i]);
if (s->has_b_frames)
free(s->aux_picture_base[i]);
}
......@@ -753,7 +731,7 @@ static inline void add_dct(MpegEncContext *s,
*/
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
{
int mb_x, mb_y, motion_x, motion_y;
int mb_x, mb_y;
int dct_linesize, dct_offset;
op_pixels_func *op_pix;
......@@ -770,38 +748,35 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
if (s->h263_pred) {
if(s->mbintra_table[mb_x + mb_y*s->mb_width])
{
int wrap, x, y, v;
int wrap, xy, v;
s->mbintra_table[mb_x + mb_y*s->mb_width]=0;
wrap = 2 * s->mb_width + 2;
xy = 2 * mb_x + 1 + (2 * mb_y + 1) * wrap;
v = 1024;
x = 2 * mb_x + 1;
y = 2 * mb_y + 1;
s->dc_val[0][(x) + (y) * wrap] = v;
s->dc_val[0][(x + 1) + (y) * wrap] = v;
s->dc_val[0][(x) + (y + 1) * wrap] = v;
s->dc_val[0][(x + 1) + (y + 1) * wrap] = v;
s->dc_val[0][xy] = v;
s->dc_val[0][xy + 1] = v;
s->dc_val[0][xy + wrap] = v;
s->dc_val[0][xy + 1 + wrap] = v;
/* ac pred */
memset(s->ac_val[0][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
memset(s->ac_val[0][(x + 1) + (y) * wrap], 0, 16 * sizeof(INT16));
memset(s->ac_val[0][(x) + (y + 1) * wrap], 0, 16 * sizeof(INT16));
memset(s->ac_val[0][(x + 1) + (y + 1) * wrap], 0, 16 * sizeof(INT16));
memset(s->ac_val[0][xy], 0, 16 * sizeof(INT16));
memset(s->ac_val[0][xy + 1], 0, 16 * sizeof(INT16));
memset(s->ac_val[0][xy + wrap], 0, 16 * sizeof(INT16));
memset(s->ac_val[0][xy + 1 + wrap], 0, 16 * sizeof(INT16));
if (s->h263_msmpeg4) {
s->coded_block[(x) + (y) * wrap] = 0;
s->coded_block[(x + 1) + (y) * wrap] = 0;
s->coded_block[(x) + (y + 1) * wrap] = 0;
s->coded_block[(x + 1) + (y + 1) * wrap] = 0;
s->coded_block[xy] = 0;
s->coded_block[xy + 1] = 0;
s->coded_block[xy + wrap] = 0;
s->coded_block[xy + 1 + wrap] = 0;
}
/* chroma */
wrap = s->mb_width + 2;
x = mb_x + 1;
y = mb_y + 1;
s->dc_val[1][(x) + (y) * wrap] = v;
s->dc_val[2][(x) + (y) * wrap] = v;
xy = mb_x + 1 + (mb_y + 1) * wrap;
s->dc_val[1][xy] = v;
s->dc_val[2][xy] = v;
/* ac pred */
memset(s->ac_val[1][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
memset(s->ac_val[2][(x) + (y) * wrap], 0, 16 * sizeof(INT16));
memset(s->ac_val[1][xy], 0, 16 * sizeof(INT16));
memset(s->ac_val[2][xy], 0, 16 * sizeof(INT16));
}
} else {
s->last_dc[0] = 128 << s->intra_dc_precision;
......@@ -814,11 +789,10 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
/* update motion predictor */
if (s->out_format == FMT_H263) {
int x, y, wrap;
int xy, wrap, motion_x, motion_y;
x = 2 * mb_x + 1;
y = 2 * mb_y + 1;
wrap = 2 * s->mb_width + 2;
xy = 2 * mb_x + 1 + (2 * mb_y + 1) * wrap;
if (s->mb_intra) {
motion_x = 0;
motion_y = 0;
......@@ -828,14 +802,14 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
motion_y = s->mv[0][0][1];
motion_init:
/* no update if 8X8 because it has been done during parsing */
s->motion_val[(x) + (y) * wrap][0] = motion_x;
s->motion_val[(x) + (y) * wrap][1] = motion_y;
s->motion_val[(x + 1) + (y) * wrap][0] = motion_x;
s->motion_val[(x + 1) + (y) * wrap][1] = motion_y;
s->motion_val[(x) + (y + 1) * wrap][0] = motion_x;
s->motion_val[(x) + (y + 1) * wrap][1] = motion_y;
s->motion_val[(x + 1) + (y + 1) * wrap][0] = motion_x;
s->motion_val[(x + 1) + (y + 1) * wrap][1] = motion_y;
s->motion_val[xy][0] = motion_x;
s->motion_val[xy][1] = motion_y;
s->motion_val[xy + 1][0] = motion_x;
s->motion_val[xy + 1][1] = motion_y;
s->motion_val[xy + wrap][0] = motion_x;
s->motion_val[xy + wrap][1] = motion_y;
s->motion_val[xy + 1 + wrap][0] = motion_x;
s->motion_val[xy + 1 + wrap][1] = motion_y;
}
}
......
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