本文整理汇总了C++中png_warning函数的典型用法代码示例。如果您正苦于以下问题:C++ png_warning函数的具体用法?C++ png_warning怎么用?C++ png_warning使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了png_warning函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: pngx_read_tiff
//.........这里部分代码省略.........
width = (unsigned int)tiff_info.width;
height = (unsigned int)tiff_info.height;
pixel_size = tiff_info.samples_per_pixel;
sample_depth = tiff_info.bits_per_sample;
switch (pixel_size)
{
case 1:
color_type = PNG_COLOR_TYPE_GRAY;
break;
case 2:
color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
break;
case 3:
color_type = PNG_COLOR_TYPE_RGB;
break;
case 4:
color_type = PNG_COLOR_TYPE_RGB_ALPHA;
break;
default:
png_error(png_ptr, "Unsupported TIFF color space");
return 0; /* avoid "uninitialized color_type" warning */
}
if (sample_depth > 16)
png_error(png_ptr, "Unsupported TIFF sample depth");
sample_max = (1 << sample_depth) - 1;
sample_overflow = 0;
png_set_IHDR(png_ptr, info_ptr, width, height,
(sample_depth <= 8) ? 8 : 16,
color_type,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
row_pointers = pngx_malloc_rows(png_ptr, info_ptr, 0);
if (sample_depth <= 8)
{
for (i = 0; i < height; ++i)
{
row = row_pointers[i];
minitiff_read_row(&tiff_info, row, i, stream);
if (sample_depth < 8)
{
for (j = 0; j < pixel_size * width; ++j)
{
unsigned int b = row[j];
if (b > sample_max)
{
b = sample_max;
sample_overflow = 1;
}
row[j] = (png_byte)((b * 255 + sample_max / 2) / sample_max);
}
}
if (tiff_info.photometric == 0)
{
for (j = 0; j < pixel_size * width; ++j)
row[j] = (png_byte)(255 - row[j]);
}
}
}
else
{
for (i = 0; i < height; ++i)
{
row = row_pointers[i];
minitiff_read_row(&tiff_info, row, i, stream);
if (tiff_info.byte_order == 'I')
{
/* "Intel" byte order => swap row bytes */
for (j = k = 0; j < pixel_size * width; ++j, k+=2)
{
png_byte b = row[k];
row[k] = row[k + 1];
row[k + 1] = b;
}
}
if (sample_depth < 16)
{
for (j = k = 0; k < pixel_size * width; ++j, k+=2)
{
unsigned int b = (row[k] << 8) + row[k + 1];
if (b > sample_max)
{
b = sample_max;
sample_overflow = 1;
}
b = (b * 65535U + sample_max / 2) / sample_max;
row[k] = (png_byte)(b >> 8);
row[k + 1] = (png_byte)(b & 255);
}
}
}
}
if (sample_overflow)
png_warning(png_ptr, "Overflow in TIFF samples");
minitiff_destroy_info(&tiff_info);
return 1 + num_extra_images;
}
开发者ID:juntalis,项目名称:PyOptiPng,代码行数:101,代码来源:pngxrtif.c
示例2: png_push_read_zTXt
//.........这里部分代码省略.........
(text - key));
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
key_size = text - key;
text_size = 0;
text = NULL;
ret = Z_STREAM_END;
while (png_ptr->zstream.avail_in)
{
ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
if (ret != Z_OK && ret != Z_STREAM_END)
{
inflateReset(&png_ptr->zstream);
png_ptr->zstream.avail_in = 0;
png_ptr->current_text = NULL;
png_free(png_ptr, key);
png_free(png_ptr, text);
return;
}
if (!(png_ptr->zstream.avail_out) || ret == Z_STREAM_END)
{
if (text == NULL)
{
text = (png_charp)png_malloc(png_ptr,
(png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out
+ key_size + 1));
png_memcpy(text + key_size, png_ptr->zbuf,
png_ptr->zbuf_size - png_ptr->zstream.avail_out);
png_memcpy(text, key, key_size);
text_size = key_size + png_ptr->zbuf_size -
png_ptr->zstream.avail_out;
*(text + text_size) = '\0';
}
else
{
png_charp tmp;
tmp = text;
text = (png_charp)png_malloc(png_ptr, text_size +
(png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out
+ 1));
png_memcpy(text, tmp, text_size);
png_free(png_ptr, tmp);
png_memcpy(text + text_size, png_ptr->zbuf,
png_ptr->zbuf_size - png_ptr->zstream.avail_out);
text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out;
*(text + text_size) = '\0';
}
if (ret != Z_STREAM_END)
{
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}
}
else
{
break;
}
if (ret == Z_STREAM_END)
break;
}
inflateReset(&png_ptr->zstream);
png_ptr->zstream.avail_in = 0;
if (ret != Z_STREAM_END)
{
png_ptr->current_text = NULL;
png_free(png_ptr, key);
png_free(png_ptr, text);
return;
}
png_ptr->current_text = NULL;
png_free(png_ptr, key);
key = text;
text += key_size;
text_ptr = (png_textp)png_malloc(png_ptr,
(png_uint_32)png_sizeof(png_text));
text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt;
text_ptr->key = key;
#ifdef PNG_iTXt_SUPPORTED
text_ptr->lang = NULL;
text_ptr->lang_key = NULL;
#endif
text_ptr->text = text;
ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
png_free(png_ptr, key);
png_free(png_ptr, text_ptr);
if (ret)
png_warning(png_ptr, "Insufficient memory to store text chunk.");
}
}
开发者ID:520lly,项目名称:-android-source-code,代码行数:101,代码来源:pngpread.c
示例3: png_push_handle_unknown
/* This function is called when we haven't found a handler for this
* chunk. If there isn't a problem with the chunk itself (ie a bad chunk
* name or a critical chunk), the chunk is (currently) silently ignored.
*/
void /* PRIVATE */
png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
{
png_uint_32 skip=0;
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
if (!(png_ptr->chunk_name[0] & 0x20))
{
#if defined(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)
&& png_ptr->read_user_chunk_fn == NULL
#endif
)
#endif
png_chunk_error(png_ptr, "unknown critical chunk");
/* to quiet compiler warnings about unused info_ptr */
if (info_ptr == NULL)
return;
}
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
{
#ifdef PNG_MAX_MALLOC_64K
if (length > (png_uint_32)65535L)
{
png_warning(png_ptr, "unknown chunk too large to fit in memory");
skip = length - (png_uint_32)65535L;
length = (png_uint_32)65535L;
}
#endif
png_strcpy((png_charp)png_ptr->unknown_chunk.name,
(png_charp)png_ptr->chunk_name);
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
png_ptr->unknown_chunk.size = (png_size_t)length;
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
if(png_ptr->read_user_chunk_fn != NULL)
{
/* callback to user unknown chunk handler */
int ret;
ret = (*(png_ptr->read_user_chunk_fn))
(png_ptr, &png_ptr->unknown_chunk);
if (ret < 0)
png_chunk_error(png_ptr, "error in user chunk");
if (ret == 0)
{
if (!(png_ptr->chunk_name[0] & 0x20))
if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS)
png_chunk_error(png_ptr, "unknown critical chunk");
png_set_unknown_chunks(png_ptr, info_ptr,
&png_ptr->unknown_chunk, 1);
}
}
#else
png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
#endif
png_free(png_ptr, png_ptr->unknown_chunk.data);
png_ptr->unknown_chunk.data = NULL;
}
else
#endif
skip=length;
png_push_crc_skip(png_ptr, skip);
}
开发者ID:520lly,项目名称:-android-source-code,代码行数:74,代码来源:pngpread.c
示例4: png_read_init_3
void PNGAPI
png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size)
{
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf tmp_jmp; /* to save current jump buffer */
#endif
int i = 0;
png_structp png_ptr = *ptr_ptr;
do {
if (user_png_ver[i] != png_libpng_ver[i]) {
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn = NULL;
png_warning(png_ptr,
"Application uses deprecated png_read_init() and should be recompiled.");
break;
#endif
}
} while (png_libpng_ver[i++]);
png_debug(1, "in png_read_init_3\n");
#ifdef PNG_SETJMP_SUPPORTED
/* save jump buffer and error functions */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
#endif
if (png_sizeof(png_struct) > png_struct_size) {
png_destroy_struct(png_ptr);
*ptr_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
png_ptr = *ptr_ptr;
}
/* reset all variables to 0 */
png_memset(png_ptr, 0, png_sizeof(png_struct));
#ifdef PNG_SETJMP_SUPPORTED
/* restore jump buffer */
png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
#endif
/* added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
#endif
/* initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zstream.zfree = png_zfree;
png_ptr->zstream.opaque = (voidpf)png_ptr;
switch (inflateInit(&png_ptr->zstream)) {
case Z_OK: /* Do nothing */
break;
case Z_MEM_ERROR:
case Z_STREAM_ERROR:
png_error(png_ptr, "zlib memory");
break;
case Z_VERSION_ERROR:
png_error(png_ptr, "zlib version");
break;
default:
png_error(png_ptr, "Unknown zlib error");
}
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
png_set_read_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL);
}
开发者ID:cafeinecake,项目名称:hge2,代码行数:82,代码来源:pngread.c
示例5: png_read_row
void PNGAPI
png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IDAT;
const int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
const int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
#endif
int ret;
png_debug2(1, "in png_read_row (row %lu, pass %d)\n",
png_ptr->row_number, png_ptr->pass);
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) {
png_read_start_row(png_ptr);
}
if (png_ptr->row_number == 0 && png_ptr->pass == 0) {
/* check for transforms that have been set but were defined out */
#if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED)
if (png_ptr->transformations & PNG_INVERT_MONO) {
png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined.");
}
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED)
if (png_ptr->transformations & PNG_FILLER) {
png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined.");
}
#endif
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && !defined(PNG_READ_PACKSWAP_SUPPORTED)
if (png_ptr->transformations & PNG_PACKSWAP) {
png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined.");
}
#endif
#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED)
if (png_ptr->transformations & PNG_PACK) {
png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined.");
}
#endif
#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED)
if (png_ptr->transformations & PNG_SHIFT) {
png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined.");
}
#endif
#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED)
if (png_ptr->transformations & PNG_BGR) {
png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined.");
}
#endif
#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED)
if (png_ptr->transformations & PNG_SWAP_BYTES) {
png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined.");
}
#endif
}
#if defined(PNG_READ_INTERLACING_SUPPORTED)
/* if interlaced and we do not need a new row, combine row and return */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) {
switch (png_ptr->pass) {
case 0:
if (png_ptr->row_number & 0x07) {
if (dsp_row != NULL)
png_combine_row(png_ptr, dsp_row,
png_pass_dsp_mask[png_ptr->pass]);
png_read_finish_row(png_ptr);
return;
}
break;
case 1:
if ((png_ptr->row_number & 0x07) || png_ptr->width < 5) {
if (dsp_row != NULL)
png_combine_row(png_ptr, dsp_row,
png_pass_dsp_mask[png_ptr->pass]);
png_read_finish_row(png_ptr);
return;
}
break;
case 2:
if ((png_ptr->row_number & 0x07) != 4) {
if (dsp_row != NULL && (png_ptr->row_number & 4))
//.........这里部分代码省略.........
开发者ID:cafeinecake,项目名称:hge2,代码行数:101,代码来源:pngread.c
示例6: defined
/* This allows us to influence the way in which libpng chooses the "best"
* filter for the current scanline. While the "minimum-sum-of-absolute-
* differences metric is relatively fast and effective, there is some
* question as to whether it can be improved upon by trying to keep the
* filtered data going to zlib more consistent, hopefully resulting in
* better compression.
*/
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) /* GRR 970116 */
void
png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
int num_weights, png_doublep filter_weights,
png_doublep filter_costs)
{
int i;
png_debug(1, "in png_set_filter_heuristics\n");
if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)
{
png_warning(png_ptr, "Unknown filter heuristic method");
return;
}
if (heuristic_method == PNG_FILTER_HEURISTIC_DEFAULT)
{
heuristic_method = PNG_FILTER_HEURISTIC_UNWEIGHTED;
}
if (num_weights < 0 || filter_weights == NULL ||
heuristic_method == PNG_FILTER_HEURISTIC_UNWEIGHTED)
{
num_weights = 0;
}
png_ptr->num_prev_filters = num_weights;
png_ptr->heuristic_method = heuristic_method;
if (num_weights > 0)
{
if (png_ptr->prev_filters == NULL)
{
png_ptr->prev_filters = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(sizeof(png_byte) * num_weights));
/* To make sure that the weighting starts out fairly */
for (i = 0; i < num_weights; i++)
{
png_ptr->prev_filters[i] = 255;
}
}
if (png_ptr->filter_weights == NULL)
{
png_ptr->filter_weights = (png_uint_16p) png_malloc(png_ptr,
(png_uint_32)(sizeof(png_uint_16) * num_weights));
png_ptr->inv_filter_weights = (png_uint_16p) png_malloc(png_ptr,
(png_uint_32)(sizeof(png_uint_16) * num_weights));
for (i = 0; i < num_weights; i++)
{
png_ptr->inv_filter_weights[i] =
png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
}
}
for (i = 0; i < num_weights; i++)
{
if (filter_weights[i] < 0.0)
{
png_ptr->inv_filter_weights[i] =
png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
}
else
{
png_ptr->inv_filter_weights[i] =
(png_uint_16)((double)PNG_WEIGHT_FACTOR*filter_weights[i]+0.5);
png_ptr->filter_weights[i] =
(png_uint_16)((double)PNG_WEIGHT_FACTOR/filter_weights[i]+0.5);
}
}
}
/* If, in the future, there are other filter methods, this would
* need to be based on png_ptr->filter.
*/
if (png_ptr->filter_costs == NULL)
{
png_ptr->filter_costs = (png_uint_16p) png_malloc(png_ptr,
(png_uint_32)(sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
png_ptr->inv_filter_costs = (png_uint_16p) png_malloc(png_ptr,
(png_uint_32)(sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));
for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
{
png_ptr->inv_filter_costs[i] =
png_ptr->filter_costs[i] = PNG_COST_FACTOR;
}
}
//.........这里部分代码省略.........
开发者ID:RaisingTheDerp,项目名称:raisingthebar,代码行数:101,代码来源:pngwrite.c
示例7: png_write_info
//.........这里部分代码省略.........
#ifdef PNG_WRITE_tIME_SUPPORTED
if (info_ptr->valid & PNG_INFO_tIME)
{
png_write_tIME(png_ptr, &(info_ptr->mod_time));
png_ptr->mode |= PNG_WROTE_tIME;
}
#endif /* tIME */
#ifdef PNG_WRITE_sPLT_SUPPORTED
if (info_ptr->valid & PNG_INFO_sPLT)
for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
#endif /* sPLT */
#ifdef PNG_WRITE_TEXT_SUPPORTED
/* Check to see if we need to write text chunks */
for (i = 0; i < info_ptr->num_text; i++)
{
png_debug2(2, "Writing header text chunk %d, type %d", i,
info_ptr->text[i].compression);
/* An internationalized chunk? */
if (info_ptr->text[i].compression > 0)
{
#ifdef PNG_WRITE_iTXt_SUPPORTED
/* Write international chunk */
png_write_iTXt(png_ptr,
info_ptr->text[i].compression,
info_ptr->text[i].key,
info_ptr->text[i].lang,
info_ptr->text[i].lang_key,
info_ptr->text[i].text);
/* Mark this chunk as written */
if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
else
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
#else
png_warning(png_ptr, "Unable to write international text");
#endif
}
/* If we want a compressed text chunk */
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
{
#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write compressed chunk */
png_write_zTXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text, 0,
info_ptr->text[i].compression);
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
#else
png_warning(png_ptr, "Unable to write compressed text");
#endif
}
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
{
#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write uncompressed chunk */
png_write_tEXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text,
0);
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
#else
/* Can't get here */
png_warning(png_ptr, "Unable to write uncompressed text");
#endif
}
}
#endif /* tEXt */
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
if (info_ptr->unknown_chunks_num)
{
png_unknown_chunk *up;
png_debug(5, "writing extra chunks");
for (up = info_ptr->unknown_chunks;
up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
up++)
{
int keep = png_handle_as_unknown(png_ptr, up->name);
if (keep != PNG_HANDLE_CHUNK_NEVER &&
up->location &&
(up->location & PNG_HAVE_PLTE) &&
!(up->location & PNG_HAVE_IDAT) &&
!(up->location & PNG_AFTER_IDAT) &&
((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
(png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
{
png_write_chunk(png_ptr, up->name, up->data, up->size);
}
}
}
#endif
}
开发者ID:261117370,项目名称:godot,代码行数:101,代码来源:pngwrite.c
示例8: png_set_pCAL
void PNGAPI
png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
int nparams, png_const_charp units, png_charpp params)
{
png_size_t length;
int i;
png_debug1(1, "in %s storage function", "pCAL");
if (png_ptr == NULL || info_ptr == NULL || purpose == NULL || units == NULL
|| (nparams > 0 && params == NULL))
return;
length = strlen(purpose) + 1;
png_debug1(3, "allocating purpose for info (%lu bytes)",
(unsigned long)length);
/* TODO: validate format of calibration name and unit name */
/* Check that the type matches the specification. */
if (type < 0 || type > 3)
png_error(png_ptr, "Invalid pCAL equation type");
if (nparams < 0 || nparams > 255)
png_error(png_ptr, "Invalid pCAL parameter count");
/* Validate params[nparams] */
for (i=0; i<nparams; ++i)
{
if (params[i] == NULL ||
!png_check_fp_string(params[i], strlen(params[i])))
png_error(png_ptr, "Invalid format for pCAL parameter");
}
info_ptr->pcal_purpose = png_voidcast(png_charp,
png_malloc_warn(png_ptr, length));
if (info_ptr->pcal_purpose == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL purpose");
return;
}
memcpy(info_ptr->pcal_purpose, purpose, length);
png_debug(3, "storing X0, X1, type, and nparams in info");
info_ptr->pcal_X0 = X0;
info_ptr->pcal_X1 = X1;
info_ptr->pcal_type = (png_byte)type;
info_ptr->pcal_nparams = (png_byte)nparams;
length = strlen(units) + 1;
png_debug1(3, "allocating units for info (%lu bytes)",
(unsigned long)length);
info_ptr->pcal_units = png_voidcast(png_charp,
png_malloc_warn(png_ptr, length));
if (info_ptr->pcal_units == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL units");
return;
}
memcpy(info_ptr->pcal_units, units, length);
info_ptr->pcal_params = png_voidcast(png_charpp, png_malloc_warn(png_ptr,
(png_size_t)((nparams + 1) * (sizeof (png_charp)))));
if (info_ptr->pcal_params == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL params");
return;
}
memset(info_ptr->pcal_params, 0, (nparams + 1) * (sizeof (png_charp)));
for (i = 0; i < nparams; i++)
{
length = strlen(params[i]) + 1;
png_debug2(3, "allocating parameter %d for info (%lu bytes)", i,
(unsigned long)length);
info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
if (info_ptr->pcal_params[i] == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL parameter");
return;
}
memcpy(info_ptr->pcal_params[i], params[i], length);
}
info_ptr->valid |= PNG_INFO_pCAL;
//.........这里部分代码省略.........
开发者ID:Artogn,项目名称:licecap,代码行数:101,代码来源:pngset.c
示例9: png_set_sCAL_s
void PNGAPI
png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
int unit, png_const_charp swidth, png_const_charp sheight)
{
png_size_t lengthw = 0, lengthh = 0;
png_debug1(1, "in %s storage function", "sCAL");
if (png_ptr == NULL || info_ptr == NULL)
return;
/* Double check the unit (should never get here with an invalid
* unit unless this is an API call.)
*/
if (unit != 1 && unit != 2)
png_error(png_ptr, "Invalid sCAL unit");
if (swidth == NULL || (lengthw = strlen(swidth)) == 0 ||
swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw))
png_error(png_ptr, "Invalid sCAL width");
if (sheight == NULL || (lengthh = strlen(sheight)) == 0 ||
sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh))
png_error(png_ptr, "Invalid sCAL height");
info_ptr->scal_unit = (png_byte)unit;
++lengthw;
png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw);
info_ptr->scal_s_width = png_voidcast(png_charp,
png_malloc_warn(png_ptr, lengthw));
if (info_ptr->scal_s_width == NULL)
{
png_warning(png_ptr, "Memory allocation failed while processing sCAL");
return;
}
memcpy(info_ptr->scal_s_width, swidth, lengthw);
++lengthh;
png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh);
info_ptr->scal_s_height = png_voidcast(png_charp,
png_malloc_warn(png_ptr, lengthh));
if (info_ptr->scal_s_height == NULL)
{
png_free (png_ptr, info_ptr->scal_s_width);
info_ptr->scal_s_width = NULL;
png_warning(png_ptr, "Memory allocation failed while processing sCAL");
return;
}
memcpy(info_ptr->scal_s_height, sheight, lengthh);
info_ptr->valid |= PNG_INFO_sCAL;
info_ptr->free_me |= PNG_FREE_SCAL;
}
开发者ID:Artogn,项目名称:licecap,代码行数:65,代码来源:pngset.c
示例10: png_set_text
void PNGAPI
png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
int num_text)
{
int i;
png_debug1(1, "in %s storage function\n", (png_ptr->chunk_name[0] == '\0' ?
"text" : (png_const_charp)png_ptr->chunk_name));
if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
return;
/* Make sure we have enough space in the "text" array in info_struct
* to hold all of the incoming text_ptr objects.
*/
if (info_ptr->num_text + num_text > info_ptr->max_text)
{
if (info_ptr->text != NULL)
{
png_textp old_text;
int old_max;
old_max = info_ptr->max_text;
info_ptr->max_text = info_ptr->num_text + num_text + 8;
old_text = info_ptr->text;
info_ptr->text = (png_textp)png_malloc(png_ptr,
(png_uint_32)(info_ptr->max_text * sizeof (png_text)));
png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max *
sizeof(png_text)));
png_free(png_ptr, old_text);
}
else
{
info_ptr->max_text = num_text + 8;
info_ptr->num_text = 0;
info_ptr->text = (png_textp)png_malloc(png_ptr,
(png_uint_32)(info_ptr->max_text * sizeof (png_text)));
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_TEXT;
#endif
}
png_debug1(3, "allocated %d entries for info_ptr->text\n",
info_ptr->max_text);
}
for (i = 0; i < num_text; i++)
{
png_size_t text_length,key_len;
png_size_t lang_len,lang_key_len;
png_textp textp = &(info_ptr->text[info_ptr->num_text]);
if (text_ptr[i].key == (png_charp)NULL)
continue;
key_len = png_strlen(text_ptr[i].key);
if(text_ptr[i].compression <= 0)
{
lang_len = 0;
lang_key_len = 0;
}
else
#ifdef PNG_iTXt_SUPPORTED
{
/* set iTXt data */
if (text_ptr[i].key != (png_charp)NULL)
lang_len = png_strlen(text_ptr[i].lang);
else
lang_len = 0;
if (text_ptr[i].lang_key != (png_charp)NULL)
lang_key_len = png_strlen(text_ptr[i].lang_key);
else
lang_key_len = 0;
}
#else
{
png_warning(png_ptr, "iTXt chunk not supported.");
continue;
}
#endif
if (text_ptr[i].text == (png_charp)NULL || text_ptr[i].text[0] == '\0')
{
text_length = 0;
#ifdef PNG_iTXt_SUPPORTED
if(text_ptr[i].compression > 0)
textp->compression = PNG_ITXT_COMPRESSION_NONE;
else
#endif
textp->compression = PNG_TEXT_COMPRESSION_NONE;
}
else
{
text_length = png_strlen(text_ptr[i].text);
textp->compression = text_ptr[i].compression;
}
textp->key = (png_charp)png_malloc(png_ptr,
(png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4));
png_debug2(2, "Allocated %d bytes at %x in png_set_text\n",
key_len + lang_len + lang_key_len + text_length + 4, (int)textp->key);
//.........这里部分代码省略.........
开发者ID:blair,项目名称:orca,代码行数:101,代码来源:pngset.c
示例11: pngx_gif_warning
static void
pngx_gif_warning(const char *msg)
{
png_warning(pngx_err_ptr, msg);
}
开发者ID:juntalis,项目名称:PyOptiPng,代码行数:5,代码来源:pngxrgif.c
示例12: png_formatted_warning
void
png_formatted_warning(png_structp png_ptr, png_warning_parameters p,
png_const_charp message)
{
/* The internal buffer is just 128 bytes - enough for all our messages,
* overflow doesn't happen because this code checks!
*/
size_t i;
char msg[128];
for (i=0; i<(sizeof msg)-1 && *message != '\0'; ++i)
{
if (*message == '@')
{
int parameter = -1;
switch (*++message)
{
case '1':
parameter = 0;
break;
case '2':
parameter = 1;
break;
case '\0':
continue; /* To break out of the for loop above. */
default:
break;
}
if (parameter >= 0 && parameter < PNG_WARNING_PARAMETER_COUNT)
{
/* Append this parameter */
png_const_charp parm = p[parameter];
png_const_charp pend = p[parameter] + (sizeof p[parameter]);
/* No need to copy the trailing '\0' here, but there is no guarantee
* that parm[] has been initialized, so there is no guarantee of a
* trailing '\0':
*/
for (; i<(sizeof msg)-1 && parm != '\0' && parm < pend; ++i)
msg[i] = *parm++;
++message;
continue;
}
/* else not a parameter and there is a character after the @ sign; just
* copy that.
*/
}
/* At this point *message can't be '\0', even in the bad parameter case
* above where there is a lone '@' at the end of the message string.
*/
msg[i] = *message++;
}
/* i is always less than (sizeof msg), so: */
msg[i] = '\0';
/* And this is the formatted message: */
png_warning(png_ptr, msg);
}
开发者ID:Carpe-Hora,项目名称:phantomjs,代码行数:66,代码来源:pngerror.c
示例13: png_set_PLTE
void PNGAPI
png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
png_const_colorp palette, int num_palette)
{
png_uint_32 max_palette_length;
png_debug1(1, "in %s storage function", "PLTE");
if (png_ptr == NULL || info_ptr == NULL)
return;
max_palette_length = (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
(1 << info_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
if (num_palette < 0 || num_palette > (int) max_palette_length)
{
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_error(png_ptr, "Invalid palette length");
else
{
png_warning(png_ptr, "Invalid palette length");
return;
}
}
if ((num_palette > 0 && palette == NULL) ||
(num_palette == 0
# ifdef PNG_MNG_FEATURES_SUPPORTED
&& (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0
# endif
))
{
png_error(png_ptr, "Invalid palette");
}
/* It may not actually be necessary to set png_ptr->palette here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*
* 1.6.0: the above statement appears to be incorrect; something has to set
* the palette inside png_struct on read.
*/
png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
/* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
* of num_palette entries, in case of an invalid PNG file or incorrect
* call to png_set_PLTE() with too-large sample values.
*/
png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr,
PNG_MAX_PALETTE_LENGTH * (sizeof (png_color))));
if (num_palette > 0)
memcpy(png_ptr->palette, palette, num_palette * (sizeof (png_color)));
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
info_ptr->free_me |= PNG_FREE_PLTE;
info_ptr->valid |= PNG_INFO_PLTE;
}
开发者ID:MIPS,项目名称:external-pdfium,代码行数:63,代码来源:pngset.c
示例14: png_check_keyword
/* Check that the tEXt or zTXt keyword is valid per PNG 1.0 specification,
* and if invalid, correct the keyword rather than discarding the entire
* chunk. The PNG 1.0 specification requires keywords 1-79 characters in
* length, forbids leading or trailing whitespace, multiple internal spaces,
* and the non-break space (0x80) from ISO 8859-1. Returns keyword length.
*
* The 'new_key' buffer must be 80 characters in size (for the keyword plus a
* trailing '\0'). If this routine returns 0 then there was no keyword, or a
* valid one could not be generated, and the caller must png_error.
*/
png_uint_32 /* PRIVATE */
png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
{
png_const_charp orig_key = key;
png_uint_32 key_len = 0;
int bad_character = 0;
int space = 1;
png_debug(1, "in png_check_keyword");
if (key == NULL)
{
*new_key = 0;
return 0;
}
while (*key && key_len < 79)
{
png_byte ch = (png_byte)*key++;
if ((ch > 32 && ch <= 126) || (ch >= 161 /*&& ch <= 255*/))
*new_key++ = ch, ++key_len, space = 0;
else if (space == 0)
{
/* A space or an invalid character when one wasn't seen immediately
* before; output just a space.
*/
*new_key++ = 32, ++key_len, space = 1;
/* If the character was not a space then it is invalid. */
if (ch != 32)
bad_character = ch;
}
else if (bad_character == 0)
bad_character = ch; /* just skip it, record the first error */
}
if (key_len > 0 && space != 0) /* trailing space */
{
--key_len, --new_key;
if (bad_character == 0)
bad_character = 32;
}
/* Terminate the keyword */
*new_key = 0;
if (key_len == 0)
return 0;
#ifdef PNG_WARNINGS_SUPPORTED
/* Try to only output one warning per keyword: */
if (*key != 0) /* keyword too long */
png_warning(png_ptr, "keyword truncated");
else if (bad_character != 0)
{
PNG_WARNING_PARAMETERS(p)
png_warning_parameter(p, 1, orig_key);
png_warning_parameter_signed(p, 2, PNG_NUMBER_FORMAT_02x, bad_character);
png_formatted_warning(png_ptr, p, "keyword \"@1\": bad character '[email protected]'");
}
#endif /* WARNINGS */
return key_len;
}
开发者ID:MIPS,项目名称:external-pdfium,代码行数:80,代码来源:pngset.c
示例15: png_write_row
/* called by user to write a row of image data */
void
png_write_row(png_structp png_ptr, png_bytep row)
{
png_debug2(1, "in png_write_row (row %ld, pass %d)\n",
png_ptr->row_number, png_ptr->pass);
/* initialize transformations and other stuff if first time */
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
{
/* check for transforms that have been set but were defined out */
#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
if (png_ptr->transformations & PNG_INVERT_MONO)
png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined.");
#endif
#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
if (png_ptr->transformations & PNG_FILLER)
png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined.");
#endif
#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && defined(PNG_READ_PACKSWAP_SUPPORTED)
if (png_ptr->transformations & PNG_PACKSWAP)
png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined.");
#endif
#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
if (png_ptr->transformations & PNG_PACK)
png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined.");
#endif
#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED)
if (png_ptr->transformations & PNG_SHIFT)
png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined.");
#endif
#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED)
if (png_ptr->transformations & PNG_BGR)
png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined.");
#endif
#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED)
if (png_ptr->transformations & PNG_SWAP_BYTES)
png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined.");
#endif
png_write_start_row(png_ptr);
}
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
/* if interlaced and not interested in row, return */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
switch (png_ptr->pass)
{
case 0:
if (png_ptr->row_number & 7)
{
png_write_finish_row(png_ptr);
return;
}
break;
case 1:
if ((png_ptr->row_number & 7) || png_ptr->width < 5)
{
png_write_finish_row(png_ptr);
return;
}
break;
case 2:
if ((png_ptr->row_number & 7) != 4)
{
png_write_finish_row(png_ptr);
return;
}
break;
case 3:
if ((png_ptr->row_number & 3) || png_ptr->width < 3)
{
png_write_finish_row(png_ptr);
return;
}
break;
case 4:
if ((png_ptr->row_number & 3) != 2)
{
png_write_finish_row(png_ptr);
return;
}
break;
case 5:
if ((png_ptr->row_number & 1) || png_ptr->width < 2)
{
png_write_finish_row(png_ptr);
return;
}
break;
case 6:
if (!(png_ptr->row_number & 1))
{
png_write_finish_row(png_ptr);
return;
}
break;
}
}
#endif
//.........这里部分代码省略.........
开发者ID:RaisingTheDerp,项目名称:raisingthebar,代码行数:101,代码来源:pngwrite.c
示例16: png_set_tRNS
void PNGAPI
png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color)
{
png_debug1(1, "in %s storage function", "tRNS");
if (png_ptr == NULL || info_ptr == NULL)
return;
if (trans_alpha != NULL)
{
/* It may not actually be necessary to set png_ptr->trans_alpha here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*
* 1.6.0: The above statement is incorrect; png_handle_tRNS effectively
* relies on png_set_tRNS storing the information in png_struct
* (otherwise it won't be there for the code in pngrtran.c).
*/
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
/* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
png_ptr->trans_alpha = info_ptr->trans_alpha = png_voidcast(png_bytep,
png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
}
if (trans_color != NULL)
{
#ifdef PNG_WARNINGS_SUPPORTED
if (info_ptr->bit_depth < 16)
{
int sample_max = (1 << info_ptr->bit_depth) - 1;
if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
trans_color->gray > sample_max) ||
(info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
(trans_color->red > sample_max ||
trans_color->green > sample_max ||
trans_color->blue > sample_max)))
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