ref: 00e89b89f0d8e9665e22826ea2ae1770fdd3ea2b
parent: acab999b45dc97dc740dea43f286ad30c13674e7
author: Hank Peng <[email protected]>
date: Thu Jun 30 16:59:27 EDT 2016
Make sure the output resolution of encoder doesn't exceed the Openh264 capability
--- a/module/gmp-openh264.cpp
+++ b/module/gmp-openh264.cpp
@@ -34,6 +34,7 @@
#include <stdint.h>
#include <time.h>
+#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
@@ -115,6 +116,7 @@
"Debug"
};
+#define OPENH264_MAX_MB 36864
GMPPlatformAPI* g_platform_api = nullptr;
@@ -249,8 +251,27 @@
// Set up layers. Currently we have one layer.
SSpatialLayerConfig* layer = ¶m.sSpatialLayers[0];
- layer->iVideoWidth = codecSettings.mWidth;
- layer->iVideoHeight = codecSettings.mHeight;
+ // Make sure the output resolution doesn't exceed the Openh264 capability
+ double width_mb = std::ceil(codecSettings.mWidth/16.0);
+ double height_mb = std::ceil(codecSettings.mHeight/16.0);
+ double input_mb = width_mb * height_mb;
+ if (static_cast<uint32_t>(input_mb) > OPENH264_MAX_MB) {
+ double scale = std::sqrt(OPENH264_MAX_MB / input_mb);
+ layer->iVideoWidth = static_cast<uint32_t>(width_mb * 16 * scale);
+ layer->iVideoHeight = static_cast<uint32_t>(height_mb * 16 * scale);
+ GMPLOG (GL_INFO, "InitEncode: the output resolution overflows, w x h = " << codecSettings.mWidth << " x " << codecSettings.mHeight
+ << ", turned to be " << layer->iVideoWidth << " x " << layer->iVideoHeight);
+ } else {
+ layer->iVideoWidth = codecSettings.mWidth;
+ layer->iVideoHeight = codecSettings.mHeight;
+ }
+ if (layer->iVideoWidth < 16) {
+ layer->iVideoWidth = 16;
+ }
+ if (layer->iVideoHeight < 16) {
+ layer->iVideoHeight = 16;
+ }
+
layer->fFrameRate = param.fMaxFrameRate;
layer->iSpatialBitrate = param.iTargetBitrate;
layer->iMaxSpatialBitrate = param.iMaxBitrate;