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,
112 const uint8_t *val_table,
int nb_codes,
115 uint8_t huff_size[256] = { 0 };
116 uint16_t huff_code[256];
117 uint16_t huff_sym[256];
122 for (i = 0; i < 256; i++)
123 huff_sym[i] = i + 16 * is_ac;
126 huff_sym[0] = 16 * 256;
129 huff_code, 2, 2, huff_sym, 2, 2, 0);
164 for (i = 0; i < 2; i++) {
175 const uint8_t *src_end = src + src_size;
178 while (src < src_end) {
183 if (x == 0xFF && !*src)
186 *dst_size = dst - dst_start;
190 int plane, int16_t *
block)
193 const int is_chroma = !!plane;
202 dc = dc * qmat[0] + c->
prev_dc[plane];
228 out[0] = av_clip_uint8(Y + ( 91881 * V + 32768 >> 16));
229 out[1] = av_clip_uint8(Y + (-22554 * U - 46802 * V + 32768 >> 16));
230 out[2] = av_clip_uint8(Y + (116130 * U + 32768 >> 16));
234 const uint8_t *src,
int src_size,
240 int mb_w, mb_h, mb_x, mb_y, i, j;
254 mb_h = (height + 15) >> 4;
257 num_mbs = mb_w * mb_h * 4;
259 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 * 2] && !mask[mb_x * 2 + 1] &&
266 !mask[mb_x * 2 + mask_stride] &&
267 !mask[mb_x * 2 + 1 + mask_stride]) {
271 for (j = 0; j < 2; j++) {
272 for (i = 0; i < 2; i++) {
273 if (mask && !mask[mb_x * 2 + i + j * mask_stride])
277 c->
block[i + j * 2])) != 0)
282 for (i = 1; i < 3; i++) {
288 for (j = 0; j < 16; j++) {
289 uint8_t *
out = dst + bx * 3 + (by + j) * dst_stride;
290 for (i = 0; i < 16; i++) {
293 Y = c->
block[(j >> 3) * 2 + (i >> 3)][(i & 7) + (j & 7) * 8];
294 U = c->
block[4 ^ swapuv][(i >> 1) + (j >> 1) * 8] - 128;
295 V = c->
block[5 ^ swapuv][(i >> 1) + (j >> 1) * 8] - 128;
307 mask += mask_stride * 2;
315 const uint8_t *jpeg_tile,
int tile_stride,
317 const uint8_t *pal,
int npal,
int tidx)
324 if (npal <= 2) nb = 1;
325 else if (npal <= 4) nb = 2;
326 else if (npal <= 16) nb = 4;
329 for (j = 0; j <
height; j++, dst +=
stride, jpeg_tile += tile_stride) {
332 for (i = 0; i <
width; i++) {
335 memcpy(dst + i * 3, pal + col * 3, 3);
337 memcpy(dst + i * 3, jpeg_tile + i * 3, 3);
343 const uint8_t *src,
int src_size)
346 int hdr, zsize, npal, tidx = -1, ret;
348 const uint8_t *src_end = src + src_size;
352 int nblocks, cblocks, bstride;
353 int bits, bitbuf, coded;
367 memcpy(transp, src, 3);
370 for (i = 0; i <
width; i++)
371 memcpy(dst + i * 3, transp, 3);
373 }
else if (sub_type == 1) {
379 memcpy(transp, src, 3);
383 memcpy(pal, src, npal * 3); src += npal * 3;
385 for (i = 0; i < npal; i++) {
386 if (!memcmp(pal + i * 3, transp, 3)) {
393 if (src_end - src < 2)
395 zsize = (src[0] << 8) | src[1]; src += 2;
397 if (src_end - src < zsize)
400 ret = uncompress(c->
kempf_buf, &dlen, src, zsize);
407 NULL, 0, width, height, pal, npal, tidx);
411 nblocks = *src++ + 1;
413 bstride =
FFALIGN(width, 16) >> 3;
416 for (i = 0; i < (FFALIGN(height, 16) >> 4); i++) {
417 for (j = 0; j < (FFALIGN(width, 16) >> 4); j++) {
426 if (cblocks > nblocks)
431 c->
kempf_flags[j * 2 + 1 + (i * 2 + 1) * bstride] = coded;
442 width, height, pal, npal, tidx);
487 uint32_t cur_size, cursor_w, cursor_h, cursor_stride;
488 uint32_t cursor_hot_x, cursor_hot_y;
491 cur_size = bytestream2_get_be32(gb);
492 cursor_w = bytestream2_get_byte(gb);
493 cursor_h = bytestream2_get_byte(gb);
494 cursor_hot_x = bytestream2_get_byte(gb);
495 cursor_hot_y = bytestream2_get_byte(gb);
496 cursor_fmt = bytestream2_get_byte(gb);
498 cursor_stride =
FFALIGN(cursor_w, 32) * 4;
500 if (cursor_w < 1 || cursor_w > 256 ||
501 cursor_h < 1 || cursor_h > 256) {
506 if (cursor_hot_x > cursor_w || cursor_hot_y > cursor_h) {
508 cursor_hot_x, cursor_hot_y);
509 cursor_hot_x =
FFMIN(cursor_hot_x, cursor_w - 1);
510 cursor_hot_y =
FFMIN(cursor_hot_y, cursor_h - 1);
518 if (cursor_fmt != 1 && cursor_fmt != 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);
553 for (i = 0; i < c->
cursor_w; i += 32) {
554 bits = bytestream2_get_be32(gb);
555 for (k = 0; k < 32; k++) {
556 int mask_bit = !!(bits & 0x80000000);
557 switch (dst[0] * 2 + mask_bit) {
559 dst[0] = 0xFF; dst[1] = 0x00;
560 dst[2] = 0x00; dst[3] = 0x00;
563 dst[0] = 0xFF; dst[1] = 0xFF;
564 dst[2] = 0xFF; dst[3] = 0xFF;
567 dst[0] = 0x00; dst[1] = 0x00;
568 dst[2] = 0x00; dst[3] = 0x00;
582 int val = bytestream2_get_be32(gb);
597 #define APPLY_ALPHA(src, new, alpha) \
598 src = (src * (256 - alpha) + new * alpha) >> 8
616 if (x + w > c->
width)
635 for (j = 0; j < h; j++) {
636 for (i = 0; i < w; i++) {
638 APPLY_ALPHA(dst[i * 3 + 0], cursor[i * 4 + 1], alpha);
639 APPLY_ALPHA(dst[i * 3 + 1], cursor[i * 4 + 2], alpha);
640 APPLY_ALPHA(dst[i * 3 + 2], cursor[i * 4 + 3], alpha);
648 int *got_picture_ptr,
AVPacket *avpkt)
651 int buf_size = avpkt->
size;
657 uint32_t chunk_size, r_mask, g_mask, b_mask;
658 int chunk_type, chunk_start;
664 "Frame should have at least 12 bytes, got %d instead\n",
671 magic = bytestream2_get_be32(&bc);
672 if ((magic & ~0xF) !=
MKBETAG(
'G',
'2',
'M',
'0') ||
673 (magic & 0xF) < 2 || (magic & 0xF) > 4) {
678 if ((magic & 0xF) != 4) {
684 chunk_size = bytestream2_get_le32(&bc) - 1;
685 chunk_type = bytestream2_get_byte(&bc);
689 chunk_size, chunk_type);
692 switch (chunk_type) {
695 if (chunk_size < 21) {
700 c->
width = bytestream2_get_be32(&bc);
701 c->
height = bytestream2_get_be32(&bc);
705 "Invalid frame dimensions %dx%d\n",
715 "Unknown compression method %d\n",
724 "Invalid tile dimensions %dx%d\n",
731 c->
bpp = bytestream2_get_byte(&bc);
734 (chunk_size - 21) < 16 ) {
736 "Display info: missing bitmasks!\n");
739 r_mask = bytestream2_get_be32(&bc);
740 g_mask = bytestream2_get_be32(&bc);
741 b_mask = bytestream2_get_be32(&bc);
742 if (r_mask != 0xFF0000 || g_mask != 0xFF00 || b_mask != 0xFF) {
744 "Invalid or unsupported bitmasks: R=%X, G=%X, B=%X\n",
745 r_mask, g_mask, b_mask);
761 "No display info - skipping tile\n");
764 if (chunk_size < 2) {
769 c->
tile_x = bytestream2_get_byte(&bc);
770 c->
tile_y = bytestream2_get_byte(&bc);
773 "Invalid tile pos %d,%d (in %dx%d grid)\n",
781 "ePIC j-b compression is not implemented yet\n");
794 if (chunk_size < 5) {
799 c->
cursor_x = bytestream2_get_be16(&bc);
800 c->
cursor_y = bytestream2_get_be16(&bc);
803 if (chunk_size < 8) {
835 for (i = 0; i < avctx->
height; i++)
841 *got_picture_ptr = 1;