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));
233 const uint8_t *src,
int src_size,
239 int mb_w, mb_h, mb_x, mb_y, i, j;
253 mb_h = (height + 15) >> 4;
256 num_mbs = mb_w * mb_h * 4;
258 for (i = 0; i < 3; i++)
262 for (mb_y = 0; mb_y < mb_h; mb_y++) {
263 for (mb_x = 0; mb_x < mb_w; mb_x++) {
264 if (mask && !mask[mb_x * 2] && !mask[mb_x * 2 + 1] &&
265 !mask[mb_x * 2 + mask_stride] &&
266 !mask[mb_x * 2 + 1 + mask_stride]) {
270 for (j = 0; j < 2; j++) {
271 for (i = 0; i < 2; i++) {
272 if (mask && !mask[mb_x * 2 + i + j * mask_stride])
276 c->
block[i + j * 2])) != 0)
281 for (i = 1; i < 3; i++) {
287 for (j = 0; j < 16; j++) {
288 uint8_t *
out = dst + bx * 3 + (by + j) * dst_stride;
289 for (i = 0; i < 16; i++) {
292 Y = c->
block[(j >> 3) * 2 + (i >> 3)][(i & 7) + (j & 7) * 8];
293 U = c->
block[4 ^ swapuv][(i >> 1) + (j >> 1) * 8] - 128;
294 V = c->
block[5 ^ swapuv][(i >> 1) + (j >> 1) * 8] - 128;
306 mask += mask_stride * 2;
314 const uint8_t *jpeg_tile,
int tile_stride,
316 const uint8_t *pal,
int npal,
int tidx)
323 if (npal <= 2) nb = 1;
324 else if (npal <= 4) nb = 2;
325 else if (npal <= 16) nb = 4;
328 for (j = 0; j <
height; j++, dst +=
stride, jpeg_tile += tile_stride) {
331 for (i = 0; i <
width; i++) {
334 memcpy(dst + i * 3, pal + col * 3, 3);
336 memcpy(dst + i * 3, jpeg_tile + i * 3, 3);
342 const uint8_t *src,
int src_size)
345 int hdr, zsize, npal, tidx = -1, ret;
347 const uint8_t *src_end = src + src_size;
351 int nblocks, cblocks, bstride;
352 int bits, bitbuf, coded;
366 memcpy(transp, src, 3);
369 for (i = 0; i <
width; i++)
370 memcpy(dst + i * 3, transp, 3);
372 }
else if (sub_type == 1) {
378 memcpy(transp, src, 3);
382 memcpy(pal, src, npal * 3); src += npal * 3;
384 for (i = 0; i < npal; i++) {
385 if (!memcmp(pal + i * 3, transp, 3)) {
392 if (src_end - src < 2)
394 zsize = (src[0] << 8) | src[1]; src += 2;
396 if (src_end - src < zsize)
399 ret = uncompress(c->
kempf_buf, &dlen, src, zsize);
406 NULL, 0, width, height, pal, npal, tidx);
410 nblocks = *src++ + 1;
412 bstride =
FFALIGN(width, 16) >> 3;
415 for (i = 0; i < (FFALIGN(height, 16) >> 4); i++) {
416 for (j = 0; j < (FFALIGN(width, 16) >> 4); j++) {
425 if (cblocks > nblocks)
430 c->
kempf_flags[j * 2 + 1 + (i * 2 + 1) * bstride] = coded;
441 width, height, pal, npal, tidx);
486 uint32_t cur_size, cursor_w, cursor_h, cursor_stride;
487 uint32_t cursor_hot_x, cursor_hot_y;
490 cur_size = bytestream2_get_be32(gb);
491 cursor_w = bytestream2_get_byte(gb);
492 cursor_h = bytestream2_get_byte(gb);
493 cursor_hot_x = bytestream2_get_byte(gb);
494 cursor_hot_y = bytestream2_get_byte(gb);
495 cursor_fmt = bytestream2_get_byte(gb);
497 cursor_stride =
FFALIGN(cursor_w, 32) * 4;
499 if (cursor_w < 1 || cursor_w > 256 ||
500 cursor_h < 1 || cursor_h > 256) {
505 if (cursor_hot_x > cursor_w || cursor_hot_y > cursor_h) {
507 cursor_hot_x, cursor_hot_y);
508 cursor_hot_x =
FFMIN(cursor_hot_x, cursor_w - 1);
509 cursor_hot_y =
FFMIN(cursor_hot_y, cursor_h - 1);
517 if (cursor_fmt != 1 && cursor_fmt != 32) {
539 for (i = 0; i < c->
cursor_w; i += 32) {
540 bits = bytestream2_get_be32(gb);
541 for (k = 0; k < 32; k++) {
542 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;
581 int val = bytestream2_get_be32(gb);
596 #define APPLY_ALPHA(src, new, alpha) \
597 src = (src * (256 - alpha) + new * alpha) >> 8
615 if (x + w > c->
width)
634 for (j = 0; j < h; j++) {
635 for (i = 0; i < w; i++) {
637 APPLY_ALPHA(dst[i * 3 + 0], cursor[i * 4 + 1], alpha);
638 APPLY_ALPHA(dst[i * 3 + 1], cursor[i * 4 + 2], alpha);
639 APPLY_ALPHA(dst[i * 3 + 2], cursor[i * 4 + 3], alpha);
647 int *got_picture_ptr,
AVPacket *avpkt)
650 int buf_size = avpkt->
size;
656 uint32_t chunk_size, r_mask, g_mask, b_mask;
657 int chunk_type, chunk_start;
663 "Frame should have at least 12 bytes, got %d instead\n",
670 magic = bytestream2_get_be32(&bc);
671 if ((magic & ~0xF) !=
MKBETAG(
'G',
'2',
'M',
'0') ||
672 (magic & 0xF) < 2 || (magic & 0xF) > 4) {
677 if ((magic & 0xF) != 4) {
683 chunk_size = bytestream2_get_le32(&bc) - 1;
684 chunk_type = bytestream2_get_byte(&bc);
688 chunk_size, chunk_type);
691 switch (chunk_type) {
694 if (chunk_size < 21) {
699 c->
width = bytestream2_get_be32(&bc);
700 c->
height = bytestream2_get_be32(&bc);
704 "Invalid frame dimensions %dx%d\n",
714 "Unknown compression method %d\n",
723 "Invalid tile dimensions %dx%d\n",
730 c->
bpp = bytestream2_get_byte(&bc);
733 (chunk_size - 21) < 16 ) {
735 "Display info: missing bitmasks!\n");
738 r_mask = bytestream2_get_be32(&bc);
739 g_mask = bytestream2_get_be32(&bc);
740 b_mask = bytestream2_get_be32(&bc);
741 if (r_mask != 0xFF0000 || g_mask != 0xFF00 || b_mask != 0xFF) {
743 "Invalid or unsupported bitmasks: R=%X, G=%X, B=%X\n",
744 r_mask, g_mask, b_mask);
760 "No display info - skipping tile\n");
763 if (chunk_size < 2) {
768 c->
tile_x = bytestream2_get_byte(&bc);
769 c->
tile_y = bytestream2_get_byte(&bc);
772 "Invalid tile pos %d,%d (in %dx%d grid)\n",
780 "ePIC j-b compression is not implemented yet\n");
793 if (chunk_size < 5) {
798 c->
cursor_x = bytestream2_get_be16(&bc);
799 c->
cursor_y = bytestream2_get_be16(&bc);
802 if (chunk_size < 8) {
834 for (i = 0; i < avctx->
height; i++)
840 *got_picture_ptr = 1;