Index: pngread.c
===================================================================
---- pngread.c (révision 144)
+--- pngread.c (révision 149)
+++ pngread.c (copie de travail)
-@@ -399,6 +399,11 @@
+@@ -405,6 +405,11 @@
#if defined(PNG_READ_zTXt_SUPPORTED)
PNG_CONST PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
png_byte chunk_length[4];
png_uint_32 length;
-@@ -452,6 +457,9 @@
+@@ -458,6 +463,9 @@
!(png_ptr->mode & PNG_HAVE_PLTE))
png_error(png_ptr, "Missing PLTE before IDAT");
png_ptr->idat_size = length;
png_ptr->mode |= PNG_HAVE_IDAT;
break;
-@@ -524,12 +532,97 @@
+@@ -530,12 +538,97 @@
else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
/* optional call to update the users info_ptr structure */
void PNGAPI
png_read_update_info(png_structp png_ptr, png_infop info_ptr)
-@@ -566,6 +659,10 @@
+@@ -572,6 +665,10 @@
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IDAT;
PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55,
0xff};
PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
-@@ -695,19 +792,46 @@
+@@ -701,19 +798,46 @@
{
if (!(png_ptr->zstream.avail_in))
{
}
png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size;
png_ptr->zstream.next_in = png_ptr->zbuf;
-@@ -725,6 +849,9 @@
+@@ -731,6 +855,9 @@
png_error(png_ptr, "Extra compressed data");
png_ptr->mode |= PNG_AFTER_IDAT;
png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
break;
}
if (ret != Z_OK)
-@@ -979,6 +1106,11 @@
+@@ -985,6 +1112,11 @@
#if defined(PNG_READ_zTXt_SUPPORTED)
PNG_CONST PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
png_read_data(png_ptr, chunk_length, 4);
-@@ -1085,6 +1217,14 @@
+@@ -1091,6 +1223,14 @@
else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
else
png_handle_unknown(png_ptr, info_ptr, length);
} while (!(png_ptr->mode & PNG_HAVE_IEND));
-Index: png.c
-===================================================================
---- png.c (révision 144)
-+++ png.c (copie de travail)
-@@ -51,6 +51,9 @@
- PNG_tIME;
- PNG_tRNS;
- PNG_zTXt;
-+PNG_acTL;
-+PNG_fcTL;
-+PNG_fdAT;
-
- #ifdef PNG_READ_SUPPORTED
- /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
Index: pngget.c
===================================================================
---- pngget.c (révision 144)
+--- pngget.c (révision 149)
+++ pngget.c (copie de travail)
@@ -797,6 +797,167 @@
}
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
png_uint_32 PNGAPI
png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
+Index: png.c
+===================================================================
+--- png.c (révision 149)
++++ png.c (copie de travail)
+@@ -51,6 +51,9 @@
+ PNG_tIME;
+ PNG_tRNS;
+ PNG_zTXt;
++PNG_acTL;
++PNG_fcTL;
++PNG_fdAT;
+
+ #ifdef PNG_READ_SUPPORTED
+ /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
Index: png.h
===================================================================
---- png.h (révision 144)
+--- png.h (révision 149)
+++ png.h (copie de travail)
-@@ -947,6 +947,19 @@
+@@ -949,6 +949,19 @@
png_fixed_point int_y_blue;
#endif
} png_info;
typedef png_info FAR * png_infop;
-@@ -1048,6 +1061,8 @@
+@@ -1050,6 +1063,8 @@
#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
#define PNG_INFO_IDAT 0x8000L /* ESR, 1.0.6 */
/* This is used for the transformation routines, as some of them
* change these values for the row. It also should enable using
-@@ -1088,7 +1103,11 @@
+@@ -1090,7 +1105,11 @@
typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop));
typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
png_uint_32, int));
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
-@@ -1419,6 +1438,39 @@
+@@ -1421,6 +1440,39 @@
png_uint_32 user_height_max;
#endif
/* New member added in libpng-1.0.25 and 1.2.17 */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* storage for unknown chunk that the library doesn't recognize. */
-@@ -1745,6 +1797,18 @@
+@@ -1747,6 +1799,18 @@
extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr,
png_bytepp image));
/* writes the end of the PNG file. */
extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr,
png_infop info_ptr));
-@@ -1993,6 +2057,11 @@
+@@ -1995,6 +2059,11 @@
png_voidp progressive_ptr,
png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
png_progressive_end_ptr end_fn));
/* returns the user pointer associated with the push read functions */
extern PNG_EXPORT(png_voidp,png_get_progressive_ptr)
-@@ -2430,6 +2499,59 @@
+@@ -2432,6 +2501,59 @@
#endif
#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* provide a list of chunks and how they are to be handled, if the built-in
handling or default unknown chunk handling is not desired. Any chunks not
-@@ -2736,6 +2858,8 @@
+@@ -2738,6 +2860,8 @@
#define PNG_BACKGROUND_IS_GRAY 0x800
#define PNG_HAVE_PNG_SIGNATURE 0x1000
#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
/* flags for the transformations the PNG library does on the image data */
#define PNG_BGR 0x0001
-@@ -2876,6 +3000,9 @@
+@@ -2878,6 +3002,9 @@
#define PNG_tIME png_byte png_tIME[5] = {116, 73, 77, 69, '\0'}
#define PNG_tRNS png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'}
#define PNG_zTXt png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'}
#ifdef PNG_USE_GLOBAL_ARRAYS
PNG_EXPORT_VAR (png_byte FARDATA) png_IHDR[5];
-@@ -2899,6 +3026,9 @@
+@@ -2901,6 +3028,9 @@
PNG_EXPORT_VAR (png_byte FARDATA) png_tIME[5];
PNG_EXPORT_VAR (png_byte FARDATA) png_tRNS[5];
PNG_EXPORT_VAR (png_byte FARDATA) png_zTXt[5];
#endif /* PNG_USE_GLOBAL_ARRAYS */
#if defined(PNG_1_0_X) || defined (PNG_1_2_X)
-@@ -3173,6 +3303,17 @@
+@@ -3175,6 +3305,17 @@
#endif
#endif
/* Called when finished processing a row of data */
PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
-@@ -3224,6 +3365,20 @@
+@@ -3226,6 +3367,20 @@
PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
png_infop info_ptr));
/* these are the functions that do the transformations */
#if defined(PNG_READ_FILLER_SUPPORTED)
PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
-@@ -3439,6 +3594,18 @@
+@@ -3441,6 +3596,18 @@
png_uint_32 length));
#endif
Index: pngtrans.c
===================================================================
---- pngtrans.c (révision 144)
+--- pngtrans.c (révision 149)
+++ pngtrans.c (copie de travail)
@@ -652,11 +652,10 @@
png_voidp PNGAPI
+ return (NULL);
}
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
-Index: pngconf.h
-===================================================================
---- pngconf.h (révision 144)
-+++ pngconf.h (copie de travail)
-@@ -925,6 +925,10 @@
- # define PNG_READ_zTXt_SUPPORTED
- # define PNG_zTXt_SUPPORTED
- #endif
-+#ifndef PNG_NO_READ_APNG
-+# define PNG_READ_APNG_SUPPORTED
-+# define PNG_APNG_SUPPORTED
-+#endif
- #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
- # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
- # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
-@@ -1067,6 +1071,12 @@
- # define PNG_zTXt_SUPPORTED
- # endif
- #endif
-+#ifndef PNG_NO_WRITE_APNG
-+# define PNG_WRITE_APNG_SUPPORTED
-+# ifndef PNG_APNG_SUPPORTED
-+# define PNG_APNG_SUPPORTED
-+# endif
-+#endif
- #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
- # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
Index: pngwrite.c
===================================================================
---- pngwrite.c (révision 144)
+--- pngwrite.c (révision 149)
+++ pngwrite.c (copie de travail)
@@ -261,6 +261,10 @@
}
/* see if user wants us to write information chunks */
if (info_ptr != NULL)
-@@ -1513,4 +1521,39 @@
+@@ -1527,4 +1535,39 @@
params = params;
}
#endif
+#endif /* PNG_WRITE_APNG_SUPPORTED */
+
#endif /* PNG_WRITE_SUPPORTED */
-Index: pngset.c
+Index: pngconf.h
===================================================================
---- pngset.c (révision 144)
-+++ pngset.c (copie de travail)
-@@ -364,6 +364,11 @@
- info_ptr->rowbytes = (png_size_t)0;
- else
- info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,width);
-+
-+#if defined(PNG_APNG_SUPPORTED)
-+ /* for non-animated png. this may be overritten from an acTL chunk later */
-+ info_ptr->num_frames = 1;
+--- pngconf.h (révision 149)
++++ pngconf.h (copie de travail)
+@@ -925,6 +925,10 @@
+ # define PNG_READ_zTXt_SUPPORTED
+ # define PNG_zTXt_SUPPORTED
+ #endif
++#ifndef PNG_NO_READ_APNG
++# define PNG_READ_APNG_SUPPORTED
++# define PNG_APNG_SUPPORTED
+#endif
- }
-
- #if defined(PNG_oFFs_SUPPORTED)
-@@ -1009,6 +1014,141 @@
- }
- #endif /* PNG_sPLT_SUPPORTED */
-
-+#if defined(PNG_APNG_SUPPORTED)
-+png_uint_32 PNGAPI
-+png_set_acTL(png_structp png_ptr, png_infop info_ptr,
-+ png_uint_32 num_frames, png_uint_32 num_plays)
-+{
-+ png_debug1(1, "in %s storage function\n", "acTL");
-+
-+ if (png_ptr == NULL || info_ptr == NULL)
-+ {
-+ png_warning(png_ptr,
-+ "Call to png_set_acTL() with NULL png_ptr "
-+ "or info_ptr ignored");
-+ return (0);
-+ }
-+ if (num_frames == 0)
-+ {
-+ png_warning(png_ptr,
-+ "Ignoring attempt to set acTL with num_frames zero");
-+ return (0);
-+ }
-+ if (num_frames > PNG_UINT_31_MAX)
-+ {
-+ png_warning(png_ptr,
-+ "Ignoring attempt to set acTL with num_frames > 2^31-1");
-+ return (0);
-+ }
-+ if (num_plays > PNG_UINT_31_MAX)
-+ {
-+ png_warning(png_ptr,
-+ "Ignoring attempt to set acTL with num_plays "
-+ "> 2^31-1");
-+ return (0);
-+ }
-+
-+ info_ptr->num_frames = num_frames;
-+ info_ptr->num_plays = num_plays;
-+
-+ info_ptr->valid |= PNG_INFO_acTL;
-+
-+ return (1);
-+}
-+
-+/* delay_num and delay_den can hold any 16-bit values including zero */
-+png_uint_32 PNGAPI
-+png_set_next_frame_fcTL(png_structp png_ptr, png_infop info_ptr,
-+ 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_debug1(1, "in %s storage function\n", "fcTL");
-+
-+ if (png_ptr == NULL || info_ptr == NULL)
-+ {
-+ png_warning(png_ptr,
-+ "Call to png_set_fcTL() with NULL png_ptr or info_ptr "
-+ "ignored");
-+ return (0);
-+ }
-+
-+ png_ensure_fcTL_is_valid(png_ptr, width, height, x_offset, y_offset,
-+ delay_num, delay_den, dispose_op, blend_op);
-+
-+ info_ptr->next_frame_width = width;
-+ info_ptr->next_frame_height = height;
-+ info_ptr->next_frame_x_offset = x_offset;
-+ info_ptr->next_frame_y_offset = y_offset;
-+ info_ptr->next_frame_delay_num = delay_num;
-+ info_ptr->next_frame_delay_den = delay_den;
-+ info_ptr->next_frame_dispose_op = dispose_op;
-+ info_ptr->next_frame_blend_op = blend_op;
-+
-+ info_ptr->valid |= PNG_INFO_fcTL;
-+
-+ return (1);
-+}
-+
-+void /* PRIVATE */
-+png_ensure_fcTL_is_valid(png_structp png_ptr,
-+ 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)
-+{
-+ if (width + x_offset > png_ptr->first_frame_width ||
-+ height + y_offset > png_ptr->first_frame_height)
-+ png_error(png_ptr, "dimensions of a frame are greater than"
-+ "the ones in IHDR");
-+ if (width > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid width in fcTL (> 2^31-1)");
-+ if (height > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid height in fcTL (> 2^31-1)");
-+ if (x_offset > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid x_offset in fcTL (> 2^31-1)");
-+ if (y_offset > PNG_UINT_31_MAX)
-+ png_error(png_ptr, "invalid y_offset in fcTL (> 2^31-1)");
-+
-+ if (dispose_op != PNG_DISPOSE_OP_NONE &&
-+ dispose_op != PNG_DISPOSE_OP_BACKGROUND &&
-+ dispose_op != PNG_DISPOSE_OP_PREVIOUS)
-+ png_error(png_ptr, "invalid dispose_op in fcTL");
-+
-+ if (blend_op != PNG_BLEND_OP_SOURCE &&
-+ blend_op != PNG_BLEND_OP_OVER)
-+ png_error(png_ptr, "invalid blend_op in fcTL");
-+
-+ if (blend_op == PNG_BLEND_OP_OVER) {
-+ if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
-+ png_error(png_ptr, "PNG_BLEND_OP_OVER is not valid for "
-+ "color type 'greyscale without alpha'");
-+ else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) &&
-+ !(png_ptr->color_type & PNG_COLOR_MASK_ALPHA))
-+ png_error(png_ptr, "PNG_BLEND_OP_OVER is not valid for "
-+ "color type 'truecolor without alpha'");
-+ }
-+}
-+
-+png_uint_32 PNGAPI
-+png_set_first_frame_is_hidden(png_structp png_ptr, png_infop info_ptr,
-+ png_byte is_hidden)
-+{
-+ png_debug(1, "in png_first_frame_is_hidden()\n");
-+
-+ if (png_ptr == NULL)
-+ return 0;
-+
-+ if(is_hidden)
-+ png_ptr->apng_flags |= PNG_FIRST_FRAME_HIDDEN;
-+ else
-+ png_ptr->apng_flags &= ~PNG_FIRST_FRAME_HIDDEN;
-+
-+ return 1;
-+}
-+#endif /* PNG_APNG_SUPPORTED */
-+
- #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- void PNGAPI
- png_set_unknown_chunks(png_structp png_ptr,
+ #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
+ # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+@@ -1067,6 +1071,12 @@
+ # define PNG_zTXt_SUPPORTED
+ # endif
+ #endif
++#ifndef PNG_NO_WRITE_APNG
++# define PNG_WRITE_APNG_SUPPORTED
++# ifndef PNG_APNG_SUPPORTED
++# define PNG_APNG_SUPPORTED
++# endif
++#endif
+ #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
+ # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
Index: pngpread.c
===================================================================
---- pngpread.c (révision 144)
+--- pngpread.c (révision 149)
+++ pngpread.c (copie de travail)
@@ -192,6 +192,11 @@
#if defined(PNG_READ_zTXt_SUPPORTED)
}
if (png_ptr->idat_size && png_ptr->save_buffer_size)
{
-@@ -1577,6 +1759,17 @@
+@@ -1582,6 +1764,17 @@
png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer);
}
png_voidp PNGAPI
png_get_progressive_ptr(png_structp png_ptr)
{
+Index: pngset.c
+===================================================================
+--- pngset.c (révision 149)
++++ pngset.c (copie de travail)
+@@ -364,6 +364,11 @@
+ info_ptr->rowbytes = (png_size_t)0;
+ else
+ info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,width);
++
++#if defined(PNG_APNG_SUPPORTED)
++ /* for non-animated png. this may be overritten from an acTL chunk later */
++ info_ptr->num_frames = 1;
++#endif
+ }
+
+ #if defined(PNG_oFFs_SUPPORTED)
+@@ -1012,6 +1017,141 @@
+ }
+ #endif /* PNG_sPLT_SUPPORTED */
+
++#if defined(PNG_APNG_SUPPORTED)
++png_uint_32 PNGAPI
++png_set_acTL(png_structp png_ptr, png_infop info_ptr,
++ png_uint_32 num_frames, png_uint_32 num_plays)
++{
++ png_debug1(1, "in %s storage function\n", "acTL");
++
++ if (png_ptr == NULL || info_ptr == NULL)
++ {
++ png_warning(png_ptr,
++ "Call to png_set_acTL() with NULL png_ptr "
++ "or info_ptr ignored");
++ return (0);
++ }
++ if (num_frames == 0)
++ {
++ png_warning(png_ptr,
++ "Ignoring attempt to set acTL with num_frames zero");
++ return (0);
++ }
++ if (num_frames > PNG_UINT_31_MAX)
++ {
++ png_warning(png_ptr,
++ "Ignoring attempt to set acTL with num_frames > 2^31-1");
++ return (0);
++ }
++ if (num_plays > PNG_UINT_31_MAX)
++ {
++ png_warning(png_ptr,
++ "Ignoring attempt to set acTL with num_plays "
++ "> 2^31-1");
++ return (0);
++ }
++
++ info_ptr->num_frames = num_frames;
++ info_ptr->num_plays = num_plays;
++
++ info_ptr->valid |= PNG_INFO_acTL;
++
++ return (1);
++}
++
++/* delay_num and delay_den can hold any 16-bit values including zero */
++png_uint_32 PNGAPI
++png_set_next_frame_fcTL(png_structp png_ptr, png_infop info_ptr,
++ 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_debug1(1, "in %s storage function\n", "fcTL");
++
++ if (png_ptr == NULL || info_ptr == NULL)
++ {
++ png_warning(png_ptr,
++ "Call to png_set_fcTL() with NULL png_ptr or info_ptr "
++ "ignored");
++ return (0);
++ }
++
++ png_ensure_fcTL_is_valid(png_ptr, width, height, x_offset, y_offset,
++ delay_num, delay_den, dispose_op, blend_op);
++
++ info_ptr->next_frame_width = width;
++ info_ptr->next_frame_height = height;
++ info_ptr->next_frame_x_offset = x_offset;
++ info_ptr->next_frame_y_offset = y_offset;
++ info_ptr->next_frame_delay_num = delay_num;
++ info_ptr->next_frame_delay_den = delay_den;
++ info_ptr->next_frame_dispose_op = dispose_op;
++ info_ptr->next_frame_blend_op = blend_op;
++
++ info_ptr->valid |= PNG_INFO_fcTL;
++
++ return (1);
++}
++
++void /* PRIVATE */
++png_ensure_fcTL_is_valid(png_structp png_ptr,
++ 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)
++{
++ if (width + x_offset > png_ptr->first_frame_width ||
++ height + y_offset > png_ptr->first_frame_height)
++ png_error(png_ptr, "dimensions of a frame are greater than"
++ "the ones in IHDR");
++ if (width > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid width in fcTL (> 2^31-1)");
++ if (height > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid height in fcTL (> 2^31-1)");
++ if (x_offset > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid x_offset in fcTL (> 2^31-1)");
++ if (y_offset > PNG_UINT_31_MAX)
++ png_error(png_ptr, "invalid y_offset in fcTL (> 2^31-1)");
++
++ if (dispose_op != PNG_DISPOSE_OP_NONE &&
++ dispose_op != PNG_DISPOSE_OP_BACKGROUND &&
++ dispose_op != PNG_DISPOSE_OP_PREVIOUS)
++ png_error(png_ptr, "invalid dispose_op in fcTL");
++
++ if (blend_op != PNG_BLEND_OP_SOURCE &&
++ blend_op != PNG_BLEND_OP_OVER)
++ png_error(png_ptr, "invalid blend_op in fcTL");
++
++ if (blend_op == PNG_BLEND_OP_OVER) {
++ if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
++ png_error(png_ptr, "PNG_BLEND_OP_OVER is not valid for "
++ "color type 'greyscale without alpha'");
++ else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) &&
++ !(png_ptr->color_type & PNG_COLOR_MASK_ALPHA))
++ png_error(png_ptr, "PNG_BLEND_OP_OVER is not valid for "
++ "color type 'truecolor without alpha'");
++ }
++}
++
++png_uint_32 PNGAPI
++png_set_first_frame_is_hidden(png_structp png_ptr, png_infop info_ptr,
++ png_byte is_hidden)
++{
++ png_debug(1, "in png_first_frame_is_hidden()\n");
++
++ if (png_ptr == NULL)
++ return 0;
++
++ if(is_hidden)
++ png_ptr->apng_flags |= PNG_FIRST_FRAME_HIDDEN;
++ else
++ png_ptr->apng_flags &= ~PNG_FIRST_FRAME_HIDDEN;
++
++ return 1;
++}
++#endif /* PNG_APNG_SUPPORTED */
++
+ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+ void PNGAPI
+ png_set_unknown_chunks(png_structp png_ptr,
Index: pngrutil.c
===================================================================
---- pngrutil.c (révision 144)
+--- pngrutil.c (révision 149)
+++ pngrutil.c (copie de travail)
@@ -374,6 +374,11 @@
filter_type = buf[11];
#endif /* PNG_READ_SUPPORTED */
Index: pngwutil.c
===================================================================
---- pngwutil.c (révision 144)
+--- pngwutil.c (révision 149)
+++ pngwutil.c (copie de travail)
@@ -496,6 +496,11 @@
/* write the chunk */
#endif /* PNG_WRITE_SUPPORTED */
Index: pngrtran.c
===================================================================
---- pngrtran.c (révision 144)
+--- pngrtran.c (révision 149)
+++ pngrtran.c (copie de travail)
-@@ -1278,7 +1278,7 @@
+@@ -1293,7 +1293,7 @@
* or png_read_update_info() after setting transforms that expand
* pixels. This check added to libpng-1.2.19 */
#if (PNG_WARN_UNINITIALIZED_ROW==1)