diff options
Diffstat (limited to 'src/3rdparty/libtiff/libtiff/tif_jpeg.c')
| -rw-r--r-- | src/3rdparty/libtiff/libtiff/tif_jpeg.c | 65 |
1 files changed, 36 insertions, 29 deletions
diff --git a/src/3rdparty/libtiff/libtiff/tif_jpeg.c b/src/3rdparty/libtiff/libtiff/tif_jpeg.c index 93ae2ea..6711137 100644 --- a/src/3rdparty/libtiff/libtiff/tif_jpeg.c +++ b/src/3rdparty/libtiff/libtiff/tif_jpeg.c @@ -466,7 +466,8 @@ std_empty_output_buffer(j_compress_ptr cinfo) } #endif - TIFFFlushData1(tif); + if( !TIFFFlushData1(tif) ) + return FALSE; sp->dest.next_output_byte = (JOCTET*) tif->tif_rawdata; sp->dest.free_in_buffer = (size_t) tif->tif_rawdatasize; @@ -937,7 +938,10 @@ JPEGFixupTagsSubsamplingReadByte(struct JPEGFixupTagsSubsamplingData* data, uint return(0); if (!data->filepositioned) { - TIFFSeekFile(data->tif,data->fileoffset,SEEK_SET); + if (TIFFSeekFile(data->tif,data->fileoffset,SEEK_SET) == (toff_t)-1) + { + return 0; + } data->filepositioned=1; } m=data->buffersize; @@ -1206,35 +1210,37 @@ JPEGPreDecode(TIFF* tif, uint16 s) /* store for all coefficients */ /* See call to jinit_d_coef_controller() from master_selection() */ /* in libjpeg */ - toff_t nRequiredMemory = (toff_t)sp->cinfo.d.image_width * - sp->cinfo.d.image_height * - sp->cinfo.d.num_components * - ((td->td_bitspersample+7)/8); - /* BLOCK_SMOOTHING_SUPPORTED is generally defined, so we need */ - /* to replicate the logic of jinit_d_coef_controller() */ - if( sp->cinfo.d.progressive_mode ) - nRequiredMemory *= 3; - -#ifndef TIFF_LIBJPEG_LARGEST_MEM_ALLOC -#define TIFF_LIBJPEG_LARGEST_MEM_ALLOC (100 * 1024 * 1024) -#endif - if( nRequiredMemory > TIFF_LIBJPEG_LARGEST_MEM_ALLOC && + /* 1 MB for regular libjpeg usage */ + toff_t nRequiredMemory = 1024 * 1024; + + for (ci = 0; ci < sp->cinfo.d.num_components; ci++) { + const jpeg_component_info *compptr = &(sp->cinfo.d.comp_info[ci]); + if( compptr->h_samp_factor > 0 && compptr->v_samp_factor > 0 ) + { + nRequiredMemory += (toff_t)( + ((compptr->width_in_blocks + compptr->h_samp_factor - 1) / compptr->h_samp_factor)) * + ((compptr->height_in_blocks + compptr->v_samp_factor - 1) / compptr->v_samp_factor) * + sizeof(JBLOCK); + } + } + + if( sp->cinfo.d.mem->max_memory_to_use > 0 && + nRequiredMemory > (toff_t)(sp->cinfo.d.mem->max_memory_to_use) && getenv("LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC") == NULL ) { - TIFFErrorExt(tif->tif_clientdata, module, - "Reading this strip would require libjpeg to allocate " - "at least %u bytes. " - "This is disabled since above the %u threshold. " - "You may override this restriction by defining the " - "LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC environment variable, " - "or recompile libtiff by defining the " - "TIFF_LIBJPEG_LARGEST_MEM_ALLOC macro to a value greater " - "than %u", - (unsigned)nRequiredMemory, - (unsigned)TIFF_LIBJPEG_LARGEST_MEM_ALLOC, - (unsigned)TIFF_LIBJPEG_LARGEST_MEM_ALLOC); - return (0); + TIFFErrorExt(tif->tif_clientdata, module, + "Reading this image would require libjpeg to allocate " + "at least %u bytes. " + "This is disabled since above the %u threshold. " + "You may override this restriction by defining the " + "LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC environment variable, " + "or setting the JPEGMEM environment variable to a value greater " + "or equal to '%uM'", + (unsigned)(nRequiredMemory), + (unsigned)(sp->cinfo.d.mem->max_memory_to_use), + (unsigned)((nRequiredMemory + 1000000 - 1) / 1000000)); + return 0; } } @@ -2344,7 +2350,7 @@ JPEGVGetField(TIFF* tif, uint32 tag, va_list ap) switch (tag) { case TIFFTAG_JPEGTABLES: *va_arg(ap, uint32*) = sp->jpegtables_length; - *va_arg(ap, void**) = sp->jpegtables; + *va_arg(ap, const void**) = sp->jpegtables; break; case TIFFTAG_JPEGQUALITY: *va_arg(ap, int*) = sp->jpegquality; @@ -2479,6 +2485,7 @@ TIFFInitJPEG(TIFF* tif, int scheme) { JPEGState* sp; + (void)scheme; assert(scheme == COMPRESSION_JPEG); /* |