52 8, 6, 5, 8, 12, 20, 26, 31,
53 6, 6, 7, 10, 13, 29, 30, 28,
54 7, 7, 8, 12, 20, 29, 35, 28,
55 7, 9, 11, 15, 26, 44, 40, 31,
56 9, 11, 19, 28, 34, 55, 52, 39,
57 12, 18, 28, 32, 41, 52, 57, 46,
58 25, 32, 39, 44, 52, 61, 60, 51,
59 36, 46, 48, 49, 56, 50, 52, 50
63 9, 9, 12, 24, 50, 50, 50, 50,
64 9, 11, 13, 33, 50, 50, 50, 50,
65 12, 13, 28, 50, 50, 50, 50, 50,
66 24, 33, 50, 50, 50, 50, 50, 50,
67 50, 50, 50, 50, 50, 50, 50, 50,
68 50, 50, 50, 50, 50, 50, 50, 50,
69 50, 50, 50, 50, 50, 50, 50, 50,
70 50, 50, 50, 50, 50, 50, 50, 50,
111 const uint8_t *val_table,
int nb_codes,
114 uint8_t huff_size[256] = { 0 };
115 uint16_t huff_code[256];
116 uint16_t huff_sym[256];
121 for (i = 0; i < 256; i++)
122 huff_sym[i] = i + 16 * is_ac;
125 huff_sym[0] = 16 * 256;
128 huff_code, 2, 2, huff_sym, 2, 2, 0);
163 for (i = 0; i < 2; i++) {
174 const uint8_t *src_end = src + src_size;
177 while (src < src_end) {
182 if (x == 0xFF && !*src)
185 *dst_size = dst - dst_start;
189 int plane, int16_t *
block)
192 const int is_chroma = !!plane;
201 dc = dc * qmat[0] + c->
prev_dc[plane];
227 out[0] = av_clip_uint8(Y + ( 91881 * V + 32768 >> 16));
228 out[1] = av_clip_uint8(Y + (-22554 * U - 46802 * V + 32768 >> 16));
229 out[2] = av_clip_uint8(Y + (116130 * U + 32768 >> 16));
240 int mb_w, mb_h, mb_x, mb_y, i, j;
255 mb_h = (height + 15) >> 4;
258 num_mbs = mb_w * mb_h;
260 for (i = 0; i < 3; i++)
263 for (mb_y = 0; mb_y < mb_h; mb_y++) {
264 for (mb_x = 0; mb_x < mb_w; mb_x++) {
265 if (mask && !mask[mb_x]) {
269 for (j = 0; j < 2; j++) {
270 for (i = 0; i < 2; i++) {
272 c->
block[i + j * 2])) != 0)
277 for (i = 1; i < 3; i++) {
283 for (j = 0; j < 16; j++) {
284 uint8_t *
out = dst + bx * 3 + (by + j) * dst_stride;
285 for (i = 0; i < 16; i++) {
288 Y = c->
block[(j >> 3) * 2 + (i >> 3)][(i & 7) + (j & 7) * 8];
289 U = c->
block[4 ^ swapuv][(i >> 1) + (j >> 1) * 8] - 128;
290 V = c->
block[5 ^ swapuv][(i >> 1) + (j >> 1) * 8] - 128;
310 const uint8_t *jpeg_tile,
int tile_stride,
312 const uint8_t *pal,
int npal,
int tidx)
319 if (npal <= 2) nb = 1;
320 else if (npal <= 4) nb = 2;
321 else if (npal <= 16) nb = 4;
324 for (j = 0; j <
height; j++, dst +=
stride, jpeg_tile += tile_stride) {
327 for (i = 0; i <
width; i++) {
330 memcpy(dst + i * 3, pal + col * 3, 3);
332 memcpy(dst + i * 3, jpeg_tile + i * 3, 3);
341 int hdr, zsize, npal, tidx = -1,
ret;
343 const uint8_t *src_end = src + src_size;
347 int nblocks, cblocks, bstride;
348 int bits, bitbuf, coded;
362 memcpy(transp, src, 3);
365 for (i = 0; i <
width; i++)
366 memcpy(dst + i * 3, transp, 3);
368 }
else if (sub_type == 1) {
374 memcpy(transp, src, 3);
378 memcpy(pal, src, npal * 3); src += npal * 3;
380 for (i = 0; i < npal; i++) {
381 if (!memcmp(pal + i * 3, transp, 3)) {
388 if (src_end - src < 2)
390 zsize = (src[0] << 8) | src[1]; src += 2;
392 if (src_end - src < zsize)
402 NULL, 0, width, height, pal, npal, tidx);
406 nblocks = *src++ + 1;
408 bstride =
FFALIGN(width, 16) >> 4;
411 for (i = 0; i < (FFALIGN(height, 16) >> 4); i++) {
412 for (j = 0; j < (FFALIGN(width, 16) >> 4); j++) {
421 if (cblocks > nblocks)
434 width, height, pal, npal, tidx);
479 uint32_t cur_size, cursor_w, cursor_h, cursor_stride;
480 uint32_t cursor_hot_x, cursor_hot_y;
484 cur_size = bytestream2_get_be32(gb);
485 cursor_w = bytestream2_get_byte(gb);
486 cursor_h = bytestream2_get_byte(gb);
487 cursor_hot_x = bytestream2_get_byte(gb);
488 cursor_hot_y = bytestream2_get_byte(gb);
489 cursor_fmt = bytestream2_get_byte(gb);
491 cursor_stride = cursor_w * 4;
493 if (cursor_w < 1 || cursor_w > 256 ||
494 cursor_h < 1 || cursor_h > 256) {
499 if (cursor_hot_x > cursor_w || cursor_hot_y > cursor_h) {
501 cursor_hot_x, cursor_hot_y);
502 cursor_hot_x =
FFMIN(cursor_hot_x, cursor_w - 1);
503 cursor_hot_y =
FFMIN(cursor_hot_y, cursor_h - 1);
511 if (cursor_fmt != 1 && cursor_fmt != 32) {
517 if (cursor_fmt == 1 && cursor_w % 32) {
540 for (i = 0; i < c->
cursor_w; i += 32) {
541 bits = bytestream2_get_be32(gb);
542 for (k = 0; k < 32; k++) {
543 dst[0] = !!(bits & 0x80000000);
552 for (i = 0; i < c->
cursor_w; i += 32) {
553 bits = bytestream2_get_be32(gb);
554 for (k = 0; k < 32; k++) {
555 int mask_bit = !!(bits & 0x80000000);
556 switch (dst[0] * 2 + mask_bit) {
558 dst[0] = 0xFF; dst[1] = 0x00;
559 dst[2] = 0x00; dst[3] = 0x00;
562 dst[0] = 0xFF; dst[1] = 0xFF;
563 dst[2] = 0xFF; dst[3] = 0xFF;
566 dst[0] = 0x00; dst[1] = 0x00;
567 dst[2] = 0x00; dst[3] = 0x00;
580 int val = bytestream2_get_be32(gb);
594 #define APPLY_ALPHA(src, new, alpha) \
595 src = (src * (256 - alpha) + new * alpha) >> 8
613 if (x + w > c->
width)
632 for (j = 0; j < h; j++) {
633 for (i = 0; i < w; i++) {
635 APPLY_ALPHA(dst[i * 3 + 0], cursor[i * 4 + 1], alpha);
636 APPLY_ALPHA(dst[i * 3 + 1], cursor[i * 4 + 2], alpha);
637 APPLY_ALPHA(dst[i * 3 + 2], cursor[i * 4 + 3], alpha);
645 int *got_picture_ptr,
AVPacket *avpkt)
648 int buf_size = avpkt->
size;
661 "Frame should have at least 12 bytes, got %d instead\n",
668 magic = bytestream2_get_be32(&bc);
669 if ((magic & ~0xF) !=
MKBETAG(
'G',
'2',
'M',
'0') ||
670 (magic & 0xF) < 2 || (magic & 0xF) > 4) {
675 if ((magic & 0xF) != 4) {
681 chunk_size = bytestream2_get_le32(&bc) - 1;
682 chunk_type = bytestream2_get_byte(&bc);
685 chunk_size, chunk_type);
688 switch (chunk_type) {
691 if (chunk_size < 21) {
696 c->
width = bytestream2_get_be32(&bc);
697 c->
height = bytestream2_get_be32(&bc);
701 "Invalid frame dimensions %dx%d\n",
711 "Unknown compression method %d\n",
719 "Invalid tile dimensions %dx%d\n",
726 c->
bpp = bytestream2_get_byte(&bc);
738 "No frame header - skipping tile\n");
742 if (chunk_size < 2) {
747 c->
tile_x = bytestream2_get_byte(&bc);
748 c->
tile_y = bytestream2_get_byte(&bc);
751 "Invalid tile pos %d,%d (in %dx%d grid)\n",
760 "ePIC j-b compression is not implemented yet\n");
774 if (chunk_size < 5) {
779 c->
cursor_x = bytestream2_get_be16(&bc);
780 c->
cursor_y = bytestream2_get_be16(&bc);
784 if (chunk_size < 8) {
816 for (i = 0; i < avctx->
height; i++)
822 *got_picture_ptr = 1;