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libobs: Use one copy for RGBA output when possible

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A minor optimization: in copy_rgbx_frame (used when libobs is set to
output RGBA frames instead of YUV frames), if the line sizes for the
source and destination match, just use a single memcpy call for all of
the data instead of multiple memcpy calls.
This commit is contained in:
Anthony Catel
2015-07-21 17:58:37 +02:00
committed by jp9000
parent b22bc8127e
commit ffb3ca4595
1 changed files with 9 additions and 4 deletions
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13
libobs/obs-video.c
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@@ -473,10 +473,15 @@ static inline void copy_rgbx_frame(
uint8_t *in_ptr = input->data[0];
uint8_t *out_ptr = output->data[0];
for (size_t y = 0; y < info->height; y++) {
memcpy(out_ptr, in_ptr, info->width * 4);
in_ptr += input->linesize[0];
out_ptr += output->linesize[0];
/* if the line sizes match, do a single copy */
if (input->linesize[0] == output->linesize[0]) {
memcpy(out_ptr, in_ptr, input->linesize[0] * info->height);
} else {
for (size_t y = 0; y < info->height; y++) {
memcpy(out_ptr, in_ptr, info->width * 4);
in_ptr += input->linesize[0];
out_ptr += output->linesize[0];
}
}
}