30 #define GCE_DISPOSAL_NONE 0
31 #define GCE_DISPOSAL_INPLACE 1
32 #define GCE_DISPOSAL_BACKGROUND 2
33 #define GCE_DISPOSAL_RESTORE 3
68 int is_interleaved, has_local_palette, y,
pass, y1, linesize, n, i;
69 uint8_t *ptr, *spal, *
palette, *ptr1;
76 is_interleaved = flags & 0x40;
77 has_local_palette = flags & 0x80;
78 bits_per_pixel = (flags & 0x07) + 1;
80 av_dlog(s->
avctx,
"gif: image x=%d y=%d w=%d h=%d\n", left, top, width, height);
82 if (has_local_palette) {
96 n = (1 << bits_per_pixel);
98 for(i = 0; i < n; i++) {
109 code_size = bytestream_get_byte(&s->
bytestream);
119 for (y = 0; y <
height; y++) {
121 if (is_interleaved) {
138 while (y1 >= height) {
140 ptr = ptr1 + linesize * y1;
155 int ext_code, ext_len, i, gce_flags, gce_transparent_index;
158 ext_code = bytestream_get_byte(&s->
bytestream);
159 ext_len = bytestream_get_byte(&s->
bytestream);
161 av_dlog(s->
avctx,
"gif: ext_code=0x%x len=%d\n", ext_code, ext_len);
168 gce_flags = bytestream_get_byte(&s->
bytestream);
170 gce_transparent_index = bytestream_get_byte(&s->
bytestream);
171 if (gce_flags & 0x01)
177 av_dlog(s->
avctx,
"gif: gce_flags=%x delay=%d tcolor=%d disposal=%d\n",
181 ext_len = bytestream_get_byte(&s->
bytestream);
187 while (ext_len != 0) {
188 for (i = 0; i < ext_len; i++)
190 ext_len = bytestream_get_byte(&s->
bytestream);
201 int has_global_palette;
224 has_global_palette = (v & 0x80);
229 av_dlog(s->
avctx,
"gif: screen_w=%d screen_h=%d bpp=%d global_palette=%d\n",
233 if (has_global_palette) {
245 int code = bytestream_get_byte(&s->
bytestream);
281 const uint8_t *buf = avpkt->
data;
282 int buf_size = avpkt->
size;