diff options
Diffstat (limited to 'thirdparty/libpng/pngwrite.c')
| -rw-r--r-- | thirdparty/libpng/pngwrite.c | 58 |
1 files changed, 11 insertions, 47 deletions
diff --git a/thirdparty/libpng/pngwrite.c b/thirdparty/libpng/pngwrite.c index 5e68032378..06c45d16ab 100644 --- a/thirdparty/libpng/pngwrite.c +++ b/thirdparty/libpng/pngwrite.c @@ -1,7 +1,7 @@ /* pngwrite.c - general routines to write a PNG file * - * Copyright (c) 2018-2019 Cosmin Truta + * Copyright (c) 2018-2022 Cosmin Truta * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson * Copyright (c) 1996-1997 Andreas Dilger * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. @@ -128,10 +128,6 @@ png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr) * the application continues writing the PNG. So check the 'invalid' * flag here too. */ -#ifdef PNG_WRITE_APNG_SUPPORTED - if (info_ptr->valid & PNG_INFO_acTL) - png_write_acTL(png_ptr, info_ptr->num_frames, info_ptr->num_plays); -#endif #ifdef PNG_GAMMA_SUPPORTED # ifdef PNG_WRITE_gAMA_SUPPORTED if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 && @@ -374,11 +370,6 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr) png_benign_error(png_ptr, "Wrote palette index exceeding num_palette"); #endif -#ifdef PNG_WRITE_APNG_SUPPORTED - if (png_ptr->num_frames_written != png_ptr->num_frames_to_write) - png_error(png_ptr, "Not enough frames written"); -#endif - /* See if user wants us to write information chunks */ if (info_ptr != NULL) { @@ -498,6 +489,16 @@ png_convert_from_time_t(png_timep ptime, time_t ttime) png_debug(1, "in png_convert_from_time_t"); tbuf = gmtime(&ttime); + if (tbuf == NULL) + { + /* TODO: add a safe function which takes a png_ptr argument and raises + * a png_error if the ttime argument is invalid and the call to gmtime + * fails as a consequence. + */ + memset(ptime, 0, sizeof(*ptime)); + return; + } + png_convert_from_struct_tm(ptime, tbuf); } #endif @@ -1470,43 +1471,6 @@ png_write_png(png_structrp png_ptr, png_inforp info_ptr, } #endif -#ifdef PNG_WRITE_APNG_SUPPORTED -void PNGAPI -png_write_frame_head(png_structp png_ptr, png_infop info_ptr, - png_bytepp row_pointers, png_uint_32 width, png_uint_32 height, - png_uint_32 x_offset, png_uint_32 y_offset, - png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op, - png_byte blend_op) -{ - png_debug(1, "in png_write_frame_head"); - - /* there is a chance this has been set after png_write_info was called, - * so it would be set but not written. is there a way to be sure? */ - if (!(info_ptr->valid & PNG_INFO_acTL)) - png_error(png_ptr, "png_write_frame_head(): acTL not set"); - - png_write_reset(png_ptr); - - png_write_reinit(png_ptr, info_ptr, width, height); - - if ( !(png_ptr->num_frames_written == 0 && - (png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN) ) ) - png_write_fcTL(png_ptr, width, height, x_offset, y_offset, - delay_num, delay_den, dispose_op, blend_op); - - PNG_UNUSED(row_pointers) -} - -void PNGAPI -png_write_frame_tail(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_write_frame_tail"); - - png_ptr->num_frames_written++; - - PNG_UNUSED(info_ptr) -} -#endif /* PNG_WRITE_APNG_SUPPORTED */ #ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED /* Initialize the write structure - general purpose utility. */ |