35 #define ZMBV_KEYFRAME 1
36 #define ZMBV_DELTAPAL 2
65 int bw,
int bh,
int *xored)
69 uint8_t histogram[256] = {0};
72 for(j = 0; j < bh; j++){
73 for(i = 0; i < bw; i++){
74 int t = src[i] ^ src2[i];
82 for(i = 1; i < 256; i++)
92 int pstride,
int x,
int y,
int *mx,
int *my,
int *xored)
94 int dx, dy, tx, ty, tv, bv, bw, bh;
99 bv =
block_cmp(src, sstride, prev, pstride, bw, bh, xored);
103 if(tx == x && ty == y)
continue;
106 tv =
block_cmp(src, sstride, prev + dx + dy*pstride, pstride, bw, bh, xored);
139 chpal = !keyframe && memcmp(p->
data[1], c->
pal2, 1024);
152 palptr = (uint32_t*)p->
data[1];
157 for(i = 0; i < 256; i++){
159 c->
work_buf[work_size++] = tpal[0] ^ c->
pal[i * 3 + 0];
160 c->
work_buf[work_size++] = tpal[1] ^ c->
pal[i * 3 + 1];
161 c->
work_buf[work_size++] = tpal[2] ^ c->
pal[i * 3 + 2];
162 c->
pal[i * 3 + 0] = tpal[0];
163 c->
pal[i * 3 + 1] = tpal[1];
164 c->
pal[i * 3 + 2] = tpal[2];
169 for(i = 0; i < 256; i++){
175 for(i = 0; i < avctx->
height; i++){
178 work_size += avctx->
width;
181 int x, y, bh2, bw2, xored;
182 uint8_t *tsrc, *tprev;
189 memset(c->
work_buf + work_size, 0, (bw * bh * 2 + 3) & ~3);
190 work_size += (bw * bh * 2 + 3) & ~3;
201 mv[0] = (mx << 1) | !!xored;
205 for(j = 0; j < bh2; j++){
206 for(i = 0; i < bw2; i++)
207 c->
work_buf[work_size++] = tsrc[i] ^ tprev[i];
220 for(i = 0; i < avctx->
height; i++){
221 memcpy(prev, src, avctx->
width);
227 c->
zstream.avail_in = work_size;
233 if(deflate(&c->
zstream, Z_SYNC_FLUSH) != Z_OK){
239 return len + c->
zstream.total_out;
266 if(lvl < 0 || lvl > 9){
272 memset(&c->
zstream, 0,
sizeof(z_stream));
274 ((avctx->
width + ZMBV_BLOCK - 1) / ZMBV_BLOCK) * ((avctx->
height + ZMBV_BLOCK - 1) / ZMBV_BLOCK) * 2 + 4;
297 zret = deflateInit(&c->
zstream, lvl);