#include "mjpeg.h"
enum ChunkType {
- FRAME_INFO = 0xC8,
+ DISPLAY_INFO = 0xC8,
TILE_DATA,
CURSOR_POS,
CURSOR_SHAPE,
mb_h = (height + 15) >> 4;
if (!num_mbs)
- num_mbs = mb_w * mb_h;
+ num_mbs = mb_w * mb_h * 4;
for (i = 0; i < 3; i++)
c->prev_dc[i] = 1024;
bx = by = 0;
+ c->dsp.clear_blocks(c->block[0]);
for (mb_y = 0; mb_y < mb_h; mb_y++) {
for (mb_x = 0; mb_x < mb_w; mb_x++) {
- if (mask && !mask[mb_x]) {
+ if (mask && !mask[mb_x * 2] && !mask[mb_x * 2 + 1] &&
+ !mask[mb_x * 2 + mask_stride] &&
+ !mask[mb_x * 2 + 1 + mask_stride]) {
bx += 16;
continue;
}
for (j = 0; j < 2; j++) {
for (i = 0; i < 2; i++) {
+ if (mask && !mask[mb_x * 2 + i + j * mask_stride])
+ continue;
+ num_mbs--;
if ((ret = jpg_decode_block(c, &gb, 0,
c->block[i + j * 2])) != 0)
return ret;
}
}
- if (!--num_mbs)
+ if (!num_mbs)
return 0;
bx += 16;
}
bx = 0;
by += 16;
if (mask)
- mask += mask_stride;
+ mask += mask_stride * 2;
}
return 0;
nblocks = *src++ + 1;
cblocks = 0;
- bstride = FFALIGN(width, 16) >> 4;
+ bstride = FFALIGN(width, 16) >> 3;
// blocks are coded LSB and we need normal bitreader for JPEG data
bits = 0;
for (i = 0; i < (FFALIGN(height, 16) >> 4); i++) {
cblocks += coded;
if (cblocks > nblocks)
return AVERROR_INVALIDDATA;
- c->kempf_flags[j + i * bstride] = coded;
+ c->kempf_flags[j * 2 + i * 2 * bstride] =
+ c->kempf_flags[j * 2 + 1 + i * 2 * bstride] =
+ c->kempf_flags[j * 2 + (i * 2 + 1) * bstride] =
+ c->kempf_flags[j * 2 + 1 + (i * 2 + 1) * bstride] = coded;
}
}
memset(c->jpeg_tile, 0, c->tile_stride * height);
jpg_decode_data(&c->jc, width, height, src, src_end - src,
c->jpeg_tile, c->tile_stride,
- c->kempf_flags, bstride, nblocks, 0);
+ c->kempf_flags, bstride, nblocks * 4, 0);
kempf_restore_buf(c->kempf_buf, dlen, dst, c->framebuf_stride,
c->jpeg_tile, c->tile_stride,
GetByteContext bc, tbc;
int magic;
int got_header = 0;
- uint32_t chunk_size;
- int chunk_type;
+ uint32_t chunk_size, r_mask, g_mask, b_mask;
+ int chunk_type, chunk_start;
int i;
int ret;
}
while (bytestream2_get_bytes_left(&bc) > 5) {
- chunk_size = bytestream2_get_le32(&bc) - 1;
- chunk_type = bytestream2_get_byte(&bc);
+ chunk_size = bytestream2_get_le32(&bc) - 1;
+ chunk_type = bytestream2_get_byte(&bc);
+ chunk_start = bytestream2_tell(&bc);
if (chunk_size > bytestream2_get_bytes_left(&bc)) {
av_log(avctx, AV_LOG_ERROR, "Invalid chunk size %d type %02X\n",
chunk_size, chunk_type);
break;
}
switch (chunk_type) {
- case FRAME_INFO:
+ case DISPLAY_INFO:
c->got_header = 0;
if (chunk_size < 21) {
- av_log(avctx, AV_LOG_ERROR, "Invalid frame info size %d\n",
+ av_log(avctx, AV_LOG_ERROR, "Invalid display info size %d\n",
chunk_size);
break;
}
c->tiles_x = (c->width + c->tile_width - 1) / c->tile_width;
c->tiles_y = (c->height + c->tile_height - 1) / c->tile_height;
c->bpp = bytestream2_get_byte(&bc);
- chunk_size -= 21;
- bytestream2_skip(&bc, chunk_size);
+ if (c->bpp == 32) {
+ if (bytestream2_get_bytes_left(&bc) < 16 || (chunk_size - 21) < 16 ) {
+ av_log(avctx, AV_LOG_ERROR, "Display info: missing bitmasks!\n");
+ return AVERROR_INVALIDDATA;
+ }
+ r_mask = bytestream2_get_be32(&bc);
+ g_mask = bytestream2_get_be32(&bc);
+ b_mask = bytestream2_get_be32(&bc);
+ if (r_mask != 0xFF0000 || g_mask != 0xFF00 || b_mask != 0xFF) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Invalid or unsupported bitmasks: R=%X, G=%X, B=%X\n",
+ r_mask, g_mask, b_mask);
+ return AVERROR_PATCHWELCOME;
+ }
+ } else {
+ av_log(avctx, AV_LOG_ERROR,
+ "Unsupported bpp=%d in the display info!\n", c->bpp);
+ return AVERROR_PATCHWELCOME;
+ }
if (g2m_init_buffers(c)) {
ret = AVERROR(ENOMEM);
goto header_fail;
case TILE_DATA:
if (!c->tiles_x || !c->tiles_y) {
av_log(avctx, AV_LOG_WARNING,
- "No frame header - skipping tile\n");
- bytestream2_skip(&bc, bytestream2_get_bytes_left(&bc));
+ "No display info - skipping tile\n");
break;
}
if (chunk_size < 2) {
c->tile_x, c->tile_y, c->tiles_x, c->tiles_y);
break;
}
- chunk_size -= 2;
ret = 0;
switch (c->compression) {
case COMPR_EPIC_J_B:
case COMPR_KEMPF_J_B:
ret = kempf_decode_tile(c, c->tile_x, c->tile_y,
buf + bytestream2_tell(&bc),
- chunk_size);
+ chunk_size - 2);
break;
}
if (ret && c->framebuf)
av_log(avctx, AV_LOG_ERROR, "Error decoding tile %d,%d\n",
c->tile_x, c->tile_y);
- bytestream2_skip(&bc, chunk_size);
break;
case CURSOR_POS:
if (chunk_size < 5) {
}
c->cursor_x = bytestream2_get_be16(&bc);
c->cursor_y = bytestream2_get_be16(&bc);
- bytestream2_skip(&bc, chunk_size - 4);
break;
case CURSOR_SHAPE:
if (chunk_size < 8) {
bytestream2_init(&tbc, buf + bytestream2_tell(&bc),
chunk_size - 4);
g2m_load_cursor(avctx, c, &tbc);
- bytestream2_skip(&bc, chunk_size);
break;
case CHUNK_CC:
case CHUNK_CD:
- bytestream2_skip(&bc, chunk_size);
break;
default:
av_log(avctx, AV_LOG_WARNING, "Skipping chunk type %02X\n",
chunk_type);
- bytestream2_skip(&bc, chunk_size);
}
+
+ /* navigate to next chunk */
+ bytestream2_skip(&bc, chunk_start + chunk_size - bytestream2_tell(&bc));
}
if (got_header)
c->got_header = 1;
projects / ffmpeg / blobdiff