31 #define GCE_DISPOSAL_NONE 0
32 #define GCE_DISPOSAL_INPLACE 1
33 #define GCE_DISPOSAL_BACKGROUND 2
34 #define GCE_DISPOSAL_RESTORE 3
69 int is_interleaved, has_local_palette, y,
pass, y1, linesize, n, i;
70 uint8_t *ptr, *spal, *palette, *ptr1;
77 is_interleaved = flags & 0x40;
78 has_local_palette = flags & 0x80;
79 bits_per_pixel = (flags & 0x07) + 1;
81 av_dlog(s->
avctx,
"gif: image x=%d y=%d w=%d h=%d\n", left, top, width, height);
83 if (has_local_palette) {
97 n = (1 << bits_per_pixel);
99 for(i = 0; i < n; i++) {
110 code_size = bytestream_get_byte(&s->
bytestream);
120 for (y = 0; y <
height; y++) {
122 if (is_interleaved) {
131 ptr = ptr1 + linesize * y1;
140 ptr = ptr1 + linesize;
161 int ext_code, ext_len, i, gce_flags, gce_transparent_index;
164 ext_code = bytestream_get_byte(&s->
bytestream);
165 ext_len = bytestream_get_byte(&s->
bytestream);
167 av_dlog(s->
avctx,
"gif: ext_code=0x%x len=%d\n", ext_code, ext_len);
174 gce_flags = bytestream_get_byte(&s->
bytestream);
176 gce_transparent_index = bytestream_get_byte(&s->
bytestream);
177 if (gce_flags & 0x01)
183 av_dlog(s->
avctx,
"gif: gce_flags=%x delay=%d tcolor=%d disposal=%d\n",
187 ext_len = bytestream_get_byte(&s->
bytestream);
193 while (ext_len != 0) {
194 for (i = 0; i < ext_len; i++)
196 ext_len = bytestream_get_byte(&s->
bytestream);
207 int has_global_palette;
230 has_global_palette = (v & 0x80);
235 av_dlog(s->
avctx,
"gif: screen_w=%d screen_h=%d bpp=%d global_palette=%d\n",
239 if (has_global_palette) {
251 int code = bytestream_get_byte(&s->
bytestream);
289 int buf_size = avpkt->
size;