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Bug 871671 - Only pause the PNG decoder when we really need a new frame. r=joe

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This commit is contained in:
Seth Fowler 2013-05-21 17:36:22 +08:00
parent 3d47306317
commit b858492ce7
1 changed files with 7 additions and 5 deletions
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12
image/decoders/nsPNGDecoder.cpp
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@ -663,7 +663,7 @@ nsPNGDecoder::info_callback(png_structp png_ptr, png_infop info_ptr)
}
}
if (!decoder->mFrameIsHidden && decoder->NeedsNewFrame()) {
if (decoder->NeedsNewFrame()) {
/* We know that we need a new frame, so pause input so the decoder
* infrastructure can give it to us.
*/
@ -829,10 +829,12 @@ nsPNGDecoder::frame_info_callback(png_structp png_ptr, png_uint_32 frame_num)
decoder->CreateFrame(x_offset, y_offset, width, height, decoder->format);
/* We know that we need a new frame, so pause input so the decoder
* infrastructure can give it to us.
*/
png_process_data_pause(png_ptr, /* save = */ 1);
if (decoder->NeedsNewFrame()) {
/* We know that we need a new frame, so pause input so the decoder
* infrastructure can give it to us.
*/
png_process_data_pause(png_ptr, /* save = */ 1);
}
#endif
}