Revision dcfb0cad libavcodec/interplayvideo.c
| libavcodec/interplayvideo.c | ||
|---|---|---|
| 70 | 70 |
int is_16bpp; |
| 71 | 71 |
const unsigned char *stream_ptr; |
| 72 | 72 |
const unsigned char *stream_end; |
| 73 |
const uint8_t *mv_ptr; |
|
| 74 |
const uint8_t *mv_end; |
|
| 73 | 75 |
unsigned char *pixel_ptr; |
| 74 | 76 |
int line_inc; |
| 75 | 77 |
int stride; |
| ... | ... | |
| 118 | 120 |
int x, y; |
| 119 | 121 |
|
| 120 | 122 |
/* copy block from 2 frames ago using a motion vector; need 1 more byte */ |
| 121 |
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
| 122 |
B = *s->stream_ptr++; |
|
| 123 |
if (!s->is_16bpp) {
|
|
| 124 |
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
| 125 |
B = *s->stream_ptr++; |
|
| 126 |
} else {
|
|
| 127 |
CHECK_STREAM_PTR(s->mv_ptr, s->mv_end, 1); |
|
| 128 |
B = *s->mv_ptr++; |
|
| 129 |
} |
|
| 123 | 130 |
|
| 124 | 131 |
if (B < 56) {
|
| 125 | 132 |
x = 8 + (B % 7); |
| ... | ... | |
| 141 | 148 |
/* copy 8x8 block from current frame from an up/left block */ |
| 142 | 149 |
|
| 143 | 150 |
/* need 1 more byte for motion */ |
| 144 |
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
| 145 |
B = *s->stream_ptr++; |
|
| 151 |
if (!s->is_16bpp) {
|
|
| 152 |
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
| 153 |
B = *s->stream_ptr++; |
|
| 154 |
} else {
|
|
| 155 |
CHECK_STREAM_PTR(s->mv_ptr, s->mv_end, 1); |
|
| 156 |
B = *s->mv_ptr++; |
|
| 157 |
} |
|
| 146 | 158 |
|
| 147 | 159 |
if (B < 56) {
|
| 148 | 160 |
x = -(8 + (B % 7)); |
| ... | ... | |
| 162 | 174 |
unsigned char B, BL, BH; |
| 163 | 175 |
|
| 164 | 176 |
/* copy a block from the previous frame; need 1 more byte */ |
| 165 |
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
| 177 |
if (!s->is_16bpp) {
|
|
| 178 |
CHECK_STREAM_PTR(s->stream_ptr, s->stream_end, 1); |
|
| 179 |
B = *s->stream_ptr++; |
|
| 180 |
} else {
|
|
| 181 |
CHECK_STREAM_PTR(s->mv_ptr, s->mv_end, 1); |
|
| 182 |
B = *s->mv_ptr++; |
|
| 183 |
} |
|
| 166 | 184 |
|
| 167 |
B = *s->stream_ptr++; |
|
| 168 | 185 |
BL = B & 0x0F; |
| 169 | 186 |
BH = (B >> 4) & 0x0F; |
| 170 | 187 |
x = -8 + BL; |
| ... | ... | |
| 587 | 604 |
s->stream_end = s->buf + s->size; |
| 588 | 605 |
} else {
|
| 589 | 606 |
s->stride = s->current_frame.linesize[0] >> 1; |
| 607 |
s->stream_ptr = s->buf + 16; |
|
| 608 |
s->stream_end = |
|
| 609 |
s->mv_ptr = s->buf + 14 + AV_RL16(s->buf+14); |
|
| 610 |
s->mv_end = s->buf + s->size; |
|
| 590 | 611 |
} |
| 591 | 612 |
s->line_inc = s->stride - 8; |
| 592 | 613 |
s->upper_motion_limit_offset = (s->avctx->height - 8) * s->current_frame.linesize[0] |
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