/* set buffer pointers = buf_ptr + pitch and thus skip the INTRA prediction line */
ctx->planes[p].pixels[0] = ctx->planes[p].buffers[0] + ctx->planes[p].pitch;
ctx->planes[p].pixels[1] = ctx->planes[p].buffers[1] + ctx->planes[p].pitch;
+ memset(ctx->planes[p].pixels[0], 0, ctx->planes[p].pitch * ctx->planes[p].height);
+ memset(ctx->planes[p].pixels[1], 0, ctx->planes[p].pitch * ctx->planes[p].height);
}
return 0;
for (p = 0; p < 3; p++) {
av_freep(&ctx->planes[p].buffers[0]);
av_freep(&ctx->planes[p].buffers[1]);
+ ctx->planes[p].pixels[0] = ctx->planes[p].pixels[1] = 0;
}
}
fill_64(dst, pix64, num_lines << 1, row_offset)
#define APPLY_DELTA_4 \
- AV_WN16A(dst + line_offset , AV_RN16A(ref ) + delta_tab->deltas[dyad1]);\
- AV_WN16A(dst + line_offset + 2, AV_RN16A(ref + 2) + delta_tab->deltas[dyad2]);\
+ AV_WN16A(dst + line_offset ,\
+ (AV_RN16A(ref ) + delta_tab->deltas[dyad1]) & 0x7F7F);\
+ AV_WN16A(dst + line_offset + 2,\
+ (AV_RN16A(ref + 2) + delta_tab->deltas[dyad2]) & 0x7F7F);\
if (mode >= 3) {\
if (is_top_of_cell && !cell->ypos) {\
AV_COPY32(dst, dst + row_offset);\
/* apply two 32-bit VQ deltas to next even line */\
if (is_top_of_cell) { \
AV_WN32A(dst + row_offset , \
- replicate32(AV_RN32A(ref )) + delta_tab->deltas_m10[dyad1]);\
+ (replicate32(AV_RN32A(ref )) + delta_tab->deltas_m10[dyad1]) & 0x7F7F7F7F);\
AV_WN32A(dst + row_offset + 4, \
- replicate32(AV_RN32A(ref + 4)) + delta_tab->deltas_m10[dyad2]);\
+ (replicate32(AV_RN32A(ref + 4)) + delta_tab->deltas_m10[dyad2]) & 0x7F7F7F7F);\
} else { \
AV_WN32A(dst + row_offset , \
- AV_RN32A(ref ) + delta_tab->deltas_m10[dyad1]);\
+ (AV_RN32A(ref ) + delta_tab->deltas_m10[dyad1]) & 0x7F7F7F7F);\
AV_WN32A(dst + row_offset + 4, \
- AV_RN32A(ref + 4) + delta_tab->deltas_m10[dyad2]);\
+ (AV_RN32A(ref + 4) + delta_tab->deltas_m10[dyad2]) & 0x7F7F7F7F);\
} \
/* odd lines are not coded but rather interpolated/replicated */\
/* first line of the cell on the top of image? - replicate */\
#define APPLY_DELTA_1011_INTER \
if (mode == 10) { \
AV_WN32A(dst , \
- AV_RN32A(dst ) + delta_tab->deltas_m10[dyad1]);\
+ (AV_RN32A(dst ) + delta_tab->deltas_m10[dyad1]) & 0x7F7F7F7F);\
AV_WN32A(dst + 4 , \
- AV_RN32A(dst + 4 ) + delta_tab->deltas_m10[dyad2]);\
+ (AV_RN32A(dst + 4 ) + delta_tab->deltas_m10[dyad2]) & 0x7F7F7F7F);\
AV_WN32A(dst + row_offset , \
- AV_RN32A(dst + row_offset ) + delta_tab->deltas_m10[dyad1]);\
+ (AV_RN32A(dst + row_offset ) + delta_tab->deltas_m10[dyad1]) & 0x7F7F7F7F);\
AV_WN32A(dst + row_offset + 4, \
- AV_RN32A(dst + row_offset + 4) + delta_tab->deltas_m10[dyad2]);\
+ (AV_RN32A(dst + row_offset + 4) + delta_tab->deltas_m10[dyad2]) & 0x7F7F7F7F);\
} else { \
AV_WN16A(dst , \
- AV_RN16A(dst ) + delta_tab->deltas[dyad1]);\
+ (AV_RN16A(dst ) + delta_tab->deltas[dyad1]) & 0x7F7F);\
AV_WN16A(dst + 2 , \
- AV_RN16A(dst + 2 ) + delta_tab->deltas[dyad2]);\
+ (AV_RN16A(dst + 2 ) + delta_tab->deltas[dyad2]) & 0x7F7F);\
AV_WN16A(dst + row_offset , \
- AV_RN16A(dst + row_offset ) + delta_tab->deltas[dyad1]);\
+ (AV_RN16A(dst + row_offset ) + delta_tab->deltas[dyad1]) & 0x7F7F);\
AV_WN16A(dst + row_offset + 2, \
- AV_RN16A(dst + row_offset + 2) + delta_tab->deltas[dyad2]);\
+ (AV_RN16A(dst + row_offset + 2) + delta_tab->deltas[dyad2]) & 0x7F7F);\
}
av_dlog(avctx, "Frame dimensions changed!\n");
+ if (width < 16 || width > 640 ||
+ height < 16 || height > 480 ||
+ width & 3 || height & 3) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Invalid picture dimensions: %d x %d!\n", width, height);
+ return AVERROR_INVALIDDATA;
+ }
free_frame_buffers(ctx);
if ((res = allocate_frame_buffers(ctx, avctx, width, height)) < 0)
return res;