float ImageSource::frameDurationAtIndex(size_t index)
{
if (!m_decoder)
return 0;
ImageFrame* buffer = m_decoder->frameBufferAtIndex(index);
if (!buffer || buffer->status() == ImageFrame::FrameEmpty)
return 0;
// Many annoying ads specify a 0 duration to make an image flash as quickly as possible.
// We follow Firefox's behavior and use a duration of 100 ms for any frames that specify
// a duration of <= 10 ms. See <rdar://problem/7689300> and <http://webkit.org/b/36082>
// for more information.
const float duration = buffer->duration() / 1000.0f;
if (duration < 0.011f)
return 0.100f;
return duration;
}
float ImageSource::frameDurationAtIndex(size_t index)
{
float duration = 0;
#ifdef ANDROID_ANIMATED_GIF
if (m_decoder.m_gifDecoder) {
ImageFrame* buffer
= m_decoder.m_gifDecoder->frameBufferAtIndex(index);
if (!buffer || buffer->status() == ImageFrame::FrameEmpty)
return 0;
duration = buffer->duration() / 1000.0f;
}
#else
SkASSERT(index == 0);
#endif
// Many annoying ads specify a 0 duration to make an image flash as quickly as possible.
// We follow Firefox's behavior and use a duration of 100 ms for any frames that specify
// a duration of <= 10 ms. See gfxImageFrame::GetTimeout in Gecko or Radar 4051389 for more.
if (duration <= 0.010f)
duration = 0.100f;
return duration;
}