25 #define BITSTREAM_READER_LE
68 ((unsigned)avctx->
height / 8);
78 for (i = 0; i < 3; i++)
104 for (i = 0; i <
size; i++) {
105 unsigned mask_bits =
get_bits(gb, 4);
109 for (j = 0; j < 4; j++) {
110 if (mask_bits & (1 << j))
131 if (value != (1 + ((1 << 3) - 1)))
135 if (value != (1 + ((1 << 3) - 1)) + ((1 << 7) - 1))
142 int* codebook_index,
int superblock_index)
146 unsigned block_index, depth;
149 static const char transitions[3][2] = { {2, 1}, {0, 2}, {1, 0} };
150 *codebook_index = transitions[*codebook_index][
get_bits1(gb)];
158 block_index = depth ?
get_bits(gb, depth) : 0;
160 if (*codebook_index == 1) {
174 uint32_t *dst = sb->
pixels32 + index + (index & -4);
182 uint16_t* src,
unsigned src_stride)
186 for (y = 0; y < 8; y++)
187 memcpy(dest + y * dest_stride, src + y * src_stride,
188 sizeof(uint16_t) * 8);
190 for (y = 0; y < 8; y++)
191 memset(dest + y * dest_stride, 0,
sizeof(uint16_t) * 8);
195 0x4, 0x8, 0x40, 0x80,
196 0x100, 0x200, 0x1000, 0x2000,
197 0x400, 0x800, 0x4000, 0x8000};
200 void *
data,
int *got_frame,
204 int buf_size = avpkt->
size;
211 unsigned superblock_index, cb_index = 1,
212 superblock_col_index = 0,
213 superblocks_per_row = avctx->
width / 8, skip = -1;
215 uint16_t* old_frame_data, *new_frame_data;
216 unsigned old_stride, new_stride;
232 if (!(frame_flags & 0x114) || !(frame_flags & 0x7800000)) {
241 for (i = 0; i < 3; i++) {
242 if (frame_flags & (1 << (17 + i))) {
243 unsigned cb_depth, cb_size;
248 cb_depth =
av_log2(cb_size - 1) + 1;
254 cb_size = 1 << cb_depth;
275 new_frame_data = (uint16_t*)new_frame.
data[0];
276 new_stride = new_frame.
linesize[0] / 2;
277 old_frame_data = (uint16_t*)s->
frame.
data[0];
281 superblock_index++) {
284 unsigned multi_mask = 0;
294 old_frame_data, old_stride);
297 old_frame_data, old_stride);
304 for (i = 0; i < 16; i++) {
312 unsigned inv_mask =
get_bits(&gb, 4);
313 for (i = 0; i < 4; i++) {
314 if (inv_mask & (1 << i)) {
315 multi_mask ^= 0xF << i*4;
317 multi_mask ^=
get_bits(&gb, 4) << i*4;
321 for (i = 0; i < 16; i++) {
330 }
else if (frame_flags & (1 << 16)) {
340 superblock_col_index++;
344 if (superblock_col_index == superblocks_per_row) {
345 new_frame_data += new_stride * 8 - superblocks_per_row * 8;
347 old_frame_data += old_stride * 8 - superblocks_per_row * 8;
348 superblock_col_index = 0;
354 "Escape sizes: %i, %i, %i\n",