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[libpng17] Ported cosmetic changes from libpng-1.6.15beta02.

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This commit is contained in:
Glenn Randers-Pehrson
2014-11-01 13:57:38 -05:00
parent 859254054a
commit 7a4bfbdec1
18 changed files with 778 additions and 679 deletions
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47
pngpread.c
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@@ -202,7 +202,7 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
* sure we have enough data in the buffer for the 4-byte CRC at the
* end of every chunk (except IDAT, which is handled separately).
*/
if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
if ((png_ptr->mode & PNG_HAVE_CHUNK_HEADER) == 0)
{
png_byte chunk_length[4];
png_byte chunk_tag[4];
@@ -221,28 +221,28 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
if (chunk_name == png_IDAT)
{
if (png_ptr->mode & PNG_AFTER_IDAT)
if ((png_ptr->mode & PNG_AFTER_IDAT) != 0)
png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
/* If we reach an IDAT chunk, this means we have read all of the
* header chunks, and we can start reading the image (or if this
* is called after the image has been read - we have an error).
*/
if (!(png_ptr->mode & PNG_HAVE_IHDR))
if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
png_error(png_ptr, "Missing IHDR before IDAT");
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
!(png_ptr->mode & PNG_HAVE_PLTE))
(png_ptr->mode & PNG_HAVE_PLTE) == 0)
png_error(png_ptr, "Missing PLTE before IDAT");
png_ptr->mode |= PNG_HAVE_IDAT;
png_ptr->process_mode = PNG_READ_IDAT_MODE;
if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
if ((png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) == 0)
if (png_ptr->push_length == 0)
return;
if (png_ptr->mode & PNG_AFTER_IDAT)
if ((png_ptr->mode & PNG_AFTER_IDAT) != 0)
png_benign_error(png_ptr, "Too many IDATs found[p]");
}
@@ -449,7 +449,7 @@ png_push_crc_skip(png_structrp png_ptr, png_uint_32 skip)
void /* PRIVATE */
png_push_crc_finish(png_structrp png_ptr)
{
if (png_ptr->skip_length && png_ptr->save_buffer_size)
if (png_ptr->skip_length != 0 && png_ptr->save_buffer_size != 0)
{
png_size_t save_size = png_ptr->save_buffer_size;
png_uint_32 skip_length = png_ptr->skip_length;
@@ -473,7 +473,7 @@ png_push_crc_finish(png_structrp png_ptr)
png_ptr->save_buffer_size -= save_size;
png_ptr->save_buffer_ptr += save_size;
}
if (png_ptr->skip_length && png_ptr->current_buffer_size)
if (png_ptr->skip_length != 0 && png_ptr->current_buffer_size != 0)
{
png_size_t save_size = png_ptr->current_buffer_size;
png_uint_32 skip_length = png_ptr->skip_length;
@@ -494,7 +494,7 @@ png_push_crc_finish(png_structrp png_ptr)
png_ptr->current_buffer_size -= save_size;
png_ptr->current_buffer_ptr += save_size;
}
if (!png_ptr->skip_length)
if (png_ptr->skip_length == 0)
{
PNG_PUSH_SAVE_BUFFER_IF_LT(4)
png_crc_finish(png_ptr, 0);
@@ -511,7 +511,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
return;
ptr = buffer;
if (png_ptr->save_buffer_size)
if (png_ptr->save_buffer_size != 0)
{
png_size_t save_size;
@@ -528,7 +528,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
png_ptr->save_buffer_size -= save_size;
png_ptr->save_buffer_ptr += save_size;
}
if (length && png_ptr->current_buffer_size)
if (length != 0 && png_ptr->current_buffer_size != 0)
{
png_size_t save_size;
@@ -548,7 +548,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
void /* PRIVATE */
png_push_save_buffer(png_structrp png_ptr)
{
if (png_ptr->save_buffer_size)
if (png_ptr->save_buffer_size != 0)
{
if (png_ptr->save_buffer_ptr != png_ptr->save_buffer)
{
@@ -584,11 +584,13 @@ png_push_save_buffer(png_structrp png_ptr)
if (png_ptr->save_buffer == NULL)
{
png_free(png_ptr, old_buffer);
old_buffer = NULL;
png_error(png_ptr, "Insufficient memory for save_buffer");
}
memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
png_free(png_ptr, old_buffer);
old_buffer = NULL;
png_ptr->save_buffer_max = new_max;
}
if (png_ptr->current_buffer_size)
@@ -615,7 +617,7 @@ png_push_restore_buffer(png_structrp png_ptr, png_bytep buffer,
void /* PRIVATE */
png_push_read_IDAT(png_structrp png_ptr)
{
if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
if ((png_ptr->mode & PNG_HAVE_CHUNK_HEADER) == 0)
{
png_byte chunk_length[4];
png_byte chunk_tag[4];
@@ -633,7 +635,7 @@ png_push_read_IDAT(png_structrp png_ptr)
{
png_ptr->process_mode = PNG_READ_CHUNK_MODE;
if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0)
png_error(png_ptr, "Not enough compressed data");
return;
@@ -642,7 +644,7 @@ png_push_read_IDAT(png_structrp png_ptr)
png_ptr->idat_size = png_ptr->push_length;
}
if (png_ptr->idat_size && png_ptr->save_buffer_size)
if (png_ptr->idat_size != 0 && png_ptr->save_buffer_size != 0)
{
png_size_t save_size = png_ptr->save_buffer_size;
png_uint_32 idat_size = png_ptr->idat_size;
@@ -669,7 +671,7 @@ png_push_read_IDAT(png_structrp png_ptr)
png_ptr->save_buffer_ptr += save_size;
}
if (png_ptr->idat_size && png_ptr->current_buffer_size)
if (png_ptr->idat_size != 0 && png_ptr->current_buffer_size != 0)
{
png_size_t save_size = png_ptr->current_buffer_size;
png_uint_32 idat_size = png_ptr->idat_size;
@@ -694,7 +696,7 @@ png_push_read_IDAT(png_structrp png_ptr)
png_ptr->current_buffer_size -= save_size;
png_ptr->current_buffer_ptr += save_size;
}
if (!png_ptr->idat_size)
if (png_ptr->idat_size == 0)
{
PNG_PUSH_SAVE_BUFFER_IF_LT(4)
png_crc_finish(png_ptr, 0);
@@ -724,7 +726,7 @@ png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
* or the stream marked as finished.
*/
while (png_ptr->zstream.avail_in > 0 &&
!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0)
{
int ret;
@@ -841,7 +843,7 @@ png_push_process_row(png_structrp png_ptr)
memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1);
#ifdef PNG_READ_TRANSFORMS_SUPPORTED
if (png_ptr->transformations)
if (png_ptr->transformations != 0)
png_do_read_transformations(png_ptr, &row_info);
#endif
@@ -859,7 +861,8 @@ png_push_process_row(png_structrp png_ptr)
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Expand interlaced rows to full size */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
if (png_ptr->interlaced != 0 &&
(png_ptr->transformations & PNG_INTERLACE) != 0)
{
if (png_ptr->pass < 6)
png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
@@ -1069,7 +1072,7 @@ png_read_push_finish_row(png_structrp png_ptr)
return;
#ifdef PNG_READ_INTERLACING_SUPPORTED
if (png_ptr->interlaced)
if (png_ptr->interlaced != 0)
{
png_ptr->row_number = 0;
memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
@@ -1093,7 +1096,7 @@ png_read_push_finish_row(png_structrp png_ptr)
png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass];
if (png_ptr->transformations & PNG_INTERLACE)
if ((png_ptr->transformations & PNG_INTERLACE) != 0)
break;
png_ptr->num_rows = (png_ptr->height +