diff options
Diffstat (limited to 'pngpread.c')
| -rw-r--r-- | pngpread.c | 100 |
1 files changed, 51 insertions, 49 deletions
diff --git a/pngpread.c b/pngpread.c index 7adb7b854..239c04d8a 100644 --- a/pngpread.c +++ b/pngpread.c @@ -70,7 +70,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr) break; } -#if defined(PNG_READ_tEXt_SUPPORTED) +#ifdef PNG_READ_tEXt_SUPPORTED case PNG_READ_tEXt_MODE: { png_push_read_tEXt(png_ptr, info_ptr); @@ -78,7 +78,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_zTXt_SUPPORTED) +#ifdef PNG_READ_zTXt_SUPPORTED case PNG_READ_zTXt_MODE: { png_push_read_zTXt(png_ptr, info_ptr); @@ -86,7 +86,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_iTXt_SUPPORTED) +#ifdef PNG_READ_iTXt_SUPPORTED case PNG_READ_iTXt_MODE: { png_push_read_iTXt(png_ptr, info_ptr); @@ -154,58 +154,59 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) PNG_CONST PNG_IDAT; PNG_CONST PNG_IEND; PNG_CONST PNG_PLTE; -#if defined(PNG_READ_bKGD_SUPPORTED) +#ifdef PNG_READ_bKGD_SUPPORTED PNG_CONST PNG_bKGD; #endif -#if defined(PNG_READ_cHRM_SUPPORTED) +#ifdef PNG_READ_cHRM_SUPPORTED PNG_CONST PNG_cHRM; #endif -#if defined(PNG_READ_gAMA_SUPPORTED) +#ifdef PNG_READ_gAMA_SUPPORTED PNG_CONST PNG_gAMA; #endif -#if defined(PNG_READ_hIST_SUPPORTED) +#ifdef PNG_READ_hIST_SUPPORTED PNG_CONST PNG_hIST; #endif -#if defined(PNG_READ_iCCP_SUPPORTED) +#ifdef PNG_READ_iCCP_SUPPORTED PNG_CONST PNG_iCCP; #endif -#if defined(PNG_READ_iTXt_SUPPORTED) +#ifdef PNG_READ_iTXt_SUPPORTED PNG_CONST PNG_iTXt; #endif -#if defined(PNG_READ_oFFs_SUPPORTED) +#ifdef PNG_READ_oFFs_SUPPORTED PNG_CONST PNG_oFFs; #endif -#if defined(PNG_READ_pCAL_SUPPORTED) +#ifdef PNG_READ_pCAL_SUPPORTED PNG_CONST PNG_pCAL; #endif -#if defined(PNG_READ_pHYs_SUPPORTED) +#ifdef PNG_READ_pHYs_SUPPORTED PNG_CONST PNG_pHYs; #endif -#if defined(PNG_READ_sBIT_SUPPORTED) +#ifdef PNG_READ_sBIT_SUPPORTED PNG_CONST PNG_sBIT; #endif -#if defined(PNG_READ_sCAL_SUPPORTED) +#ifdef PNG_READ_sCAL_SUPPORTED PNG_CONST PNG_sCAL; #endif -#if defined(PNG_READ_sRGB_SUPPORTED) +#ifdef PNG_READ_sRGB_SUPPORTED PNG_CONST PNG_sRGB; #endif -#if defined(PNG_READ_sPLT_SUPPORTED) +#ifdef PNG_READ_sPLT_SUPPORTED PNG_CONST PNG_sPLT; #endif -#if defined(PNG_READ_tEXt_SUPPORTED) +#ifdef PNG_READ_tEXt_SUPPORTED PNG_CONST PNG_tEXt; #endif -#if defined(PNG_READ_tIME_SUPPORTED) +#ifdef PNG_READ_tIME_SUPPORTED PNG_CONST PNG_tIME; #endif -#if defined(PNG_READ_tRNS_SUPPORTED) +#ifdef PNG_READ_tRNS_SUPPORTED PNG_CONST PNG_tRNS; #endif -#if defined(PNG_READ_zTXt_SUPPORTED) +#ifdef PNG_READ_zTXt_SUPPORTED PNG_CONST PNG_zTXt; #endif #endif /* PNG_USE_LOCAL_ARRAYS */ + /* First we make sure we have enough data for the 4 byte chunk name * and the 4 byte chunk length before proceeding with decoding the * chunk data. To fully decode each of these chunks, we also make @@ -334,7 +335,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) return; } -#if defined(PNG_READ_gAMA_SUPPORTED) +#ifdef PNG_READ_gAMA_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -347,7 +348,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_sBIT_SUPPORTED) +#ifdef PNG_READ_sBIT_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -360,7 +361,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_cHRM_SUPPORTED) +#ifdef PNG_READ_cHRM_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -373,7 +374,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_sRGB_SUPPORTED) +#ifdef PNG_READ_sRGB_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -386,7 +387,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_iCCP_SUPPORTED) +#ifdef PNG_READ_iCCP_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -399,7 +400,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_sPLT_SUPPORTED) +#ifdef PNG_READ_sPLT_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -412,7 +413,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_tRNS_SUPPORTED) +#ifdef PNG_READ_tRNS_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -425,7 +426,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_bKGD_SUPPORTED) +#ifdef PNG_READ_bKGD_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -438,7 +439,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_hIST_SUPPORTED) +#ifdef PNG_READ_hIST_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -451,7 +452,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_pHYs_SUPPORTED) +#ifdef PNG_READ_pHYs_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -464,7 +465,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_oFFs_SUPPORTED) +#ifdef PNG_READ_oFFs_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -477,7 +478,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_pCAL_SUPPORTED) +#ifdef PNG_READ_pCAL_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -490,7 +491,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_sCAL_SUPPORTED) +#ifdef PNG_READ_sCAL_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -503,7 +504,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_tIME_SUPPORTED) +#ifdef PNG_READ_tIME_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -516,7 +517,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_tEXt_SUPPORTED) +#ifdef PNG_READ_tEXt_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -529,7 +530,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_zTXt_SUPPORTED) +#ifdef PNG_READ_zTXt_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -542,7 +543,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_iTXt_SUPPORTED) +#ifdef PNG_READ_iTXt_SUPPORTED else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -859,7 +860,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer, if (!(png_ptr->zstream.avail_out)) { if (( -#if defined(PNG_READ_INTERLACING_SUPPORTED) +#ifdef PNG_READ_INTERLACING_SUPPORTED png_ptr->interlaced && png_ptr->pass > 6) || (!png_ptr->interlaced && #endif @@ -902,7 +903,7 @@ png_push_process_row(png_structp png_ptr) if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA)) png_do_read_transformations(png_ptr); -#if defined(PNG_READ_INTERLACING_SUPPORTED) +#ifdef PNG_READ_INTERLACING_SUPPORTED /* Blow up interlaced rows to full size */ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) { @@ -1114,7 +1115,7 @@ png_read_push_finish_row(png_structp png_ptr) if (png_ptr->row_number < png_ptr->num_rows) return; -#if defined(PNG_READ_INTERLACING_SUPPORTED) +#ifdef PNG_READ_INTERLACING_SUPPORTED if (png_ptr->interlaced) { png_ptr->row_number = 0; @@ -1155,7 +1156,7 @@ png_read_push_finish_row(png_structp png_ptr) #endif /* PNG_READ_INTERLACING_SUPPORTED */ } -#if defined(PNG_READ_tEXt_SUPPORTED) +#ifdef PNG_READ_tEXt_SUPPORTED void /* PRIVATE */ png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) @@ -1218,7 +1219,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr) png_push_crc_finish(png_ptr); -#if defined(PNG_MAX_MALLOC_64K) +#ifdef PNG_MAX_MALLOC_64K if (png_ptr->skip_length) return; #endif @@ -1253,7 +1254,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_zTXt_SUPPORTED) +#ifdef PNG_READ_zTXt_SUPPORTED void /* PRIVATE */ png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) @@ -1454,7 +1455,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr) } #endif -#if defined(PNG_READ_iTXt_SUPPORTED) +#ifdef PNG_READ_iTXt_SUPPORTED void /* PRIVATE */ png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) @@ -1521,7 +1522,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr) png_push_crc_finish(png_ptr); -#if defined(PNG_MAX_MALLOC_64K) +#ifdef PNG_MAX_MALLOC_64K if (png_ptr->skip_length) return; #endif @@ -1587,10 +1588,10 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 if (!(png_ptr->chunk_name[0] & 0x20)) { -#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) +#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) != PNG_HANDLE_CHUNK_ALWAYS -#if defined(PNG_READ_USER_CHUNKS_SUPPORTED) +#ifdef PNG_READ_USER_CHUNKS_SUPPORTED && png_ptr->read_user_chunk_fn == NULL #endif ) @@ -1600,7 +1601,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 info_ptr = info_ptr; /* To quiet some compiler warnings */ } -#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) +#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS) { #ifdef PNG_MAX_MALLOC_64K @@ -1629,7 +1630,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length); } -#if defined(PNG_READ_USER_CHUNKS_SUPPORTED) +#ifdef PNG_READ_USER_CHUNKS_SUPPORTED if (png_ptr->read_user_chunk_fn != NULL) { /* Callback to user unknown chunk handler */ @@ -1694,6 +1695,7 @@ png_progressive_combine_row (png_structp png_ptr, PNG_CONST int FARDATA png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff}; #endif + if (png_ptr == NULL) return; |