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Avoid OpenH264 encoder bug for #threads > 1 on Mac and Chromium+Sandbox.

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Until the bug has been further investigated, we're limiting the number
of threads to 1 to avoid problems. See crbug.com/583348.

BUG=chromium:500605, chromium:468365, chromium:583348

Review URL: https://codereview.webrtc.org/1677543002

Cr-Commit-Position: refs/heads/master@{#11536}
This commit is contained in:
hbos
2016-02-09 02:34:29 -08:00
committed by Commit bot
parent 097d54956d
commit 0715a83a07
1 changed files with 12 additions and 9 deletions
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21
webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
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@ -28,15 +28,18 @@ namespace {
const bool kOpenH264EncoderDetailedLogging = false;
int NumberOfThreads(int width, int height, int number_of_cores) {
if (width * height >= 1920 * 1080 && number_of_cores > 8) {
return 8; // 8 threads for 1080p on high perf machines.
} else if (width * height > 1280 * 960 && number_of_cores >= 6) {
return 3; // 3 threads for 1080p.
} else if (width * height > 640 * 480 && number_of_cores >= 3) {
return 2; // 2 threads for qHD/HD.
} else {
return 1; // 1 thread for VGA or less.
}
// TODO(hbos): In Chromium, multiple threads do not work with sandbox on Mac,
// see crbug.com/583348. Until further investigated, only use one thread.
// if (width * height >= 1920 * 1080 && number_of_cores > 8) {
// return 8; // 8 threads for 1080p on high perf machines.
// } else if (width * height > 1280 * 960 && number_of_cores >= 6) {
// return 3; // 3 threads for 1080p.
// } else if (width * height > 640 * 480 && number_of_cores >= 3) {
// return 2; // 2 threads for qHD/HD.
// } else {
// return 1; // 1 thread for VGA or less.
// }
return 1;
}
} // namespace