Handle display dimension scaling event due to SAR embedded in AVC videos

bug - 3379293

Change-Id: I03cb548e61d31bc0a2fb40916d207aaf840fafce

2 files changed, 49 insertions, 3 deletions

diff --git a/media/libstagefright/AwesomePlayer.cpp b/media/libstagefright/AwesomePlayer.cpp
index 7a00d7ac7eda..35bc0b82cebe 100644
--- a/media/libstagefright/AwesomePlayer.cpp
+++ b/media/libstagefright/AwesomePlayer.cpp
@@ -876,6 +876,17 @@ void AwesomePlayer::notifyVideoSize_l() {
              cropLeft, cropTop, cropRight, cropBottom);
     }
 
+    int32_t displayWidth;
+    if (meta->findInt32(kKeyDisplayWidth, &displayWidth)) {
+        LOGV("Display width changed (%d=>%d)", mDisplayWidth, displayWidth);
+        mDisplayWidth = displayWidth;
+    }
+    int32_t displayHeight;
+    if (meta->findInt32(kKeyDisplayHeight, &displayHeight)) {
+        LOGV("Display height changed (%d=>%d)", mDisplayHeight, displayHeight);
+        mDisplayHeight = displayHeight;
+    }
+
     int32_t usableWidth = cropRight - cropLeft + 1;
     int32_t usableHeight = cropBottom - cropTop + 1;
     if (mDisplayWidth != 0) {
diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp
index 3e26a95bb37d..a6a34b363092 100644
--- a/media/libstagefright/OMXCodec.cpp
+++ b/media/libstagefright/OMXCodec.cpp
@@ -2215,13 +2215,15 @@ void OMXCodec::onEvent(OMX_EVENTTYPE event, OMX_U32 data1, OMX_U32 data2) {
 
             if (data2 == 0 || data2 == OMX_IndexParamPortDefinition) {
                 onPortSettingsChanged(data1);
-            } else if (data1 == kPortIndexOutput
-                    && data2 == OMX_IndexConfigCommonOutputCrop) {
+            } else if (data1 == kPortIndexOutput &&
+                        (data2 == OMX_IndexConfigCommonOutputCrop ||
+                         data2 == OMX_IndexConfigCommonScale)) {
 
                 sp<MetaData> oldOutputFormat = mOutputFormat;
                 initOutputFormat(mSource->getFormat());
 
-                if (formatHasNotablyChanged(oldOutputFormat, mOutputFormat)) {
+                if (data2 == OMX_IndexConfigCommonOutputCrop &&
+                    formatHasNotablyChanged(oldOutputFormat, mOutputFormat)) {
                     mOutputPortSettingsHaveChanged = true;
 
                     if (mNativeWindow != NULL) {
@@ -2240,6 +2242,39 @@ void OMXCodec::onEvent(OMX_EVENTTYPE event, OMX_U32 data1, OMX_U32 data2) {
                         // already invalid, we'll know soon enough.
                         native_window_set_crop(mNativeWindow.get(), &crop);
                     }
+                } else if (data2 == OMX_IndexConfigCommonScale) {
+                    OMX_CONFIG_SCALEFACTORTYPE scale;
+                    InitOMXParams(&scale);
+                    scale.nPortIndex = kPortIndexOutput;
+
+                    // Change display dimension only when necessary.
+                    if (OK == mOMX->getConfig(
+                                        mNode,
+                                        OMX_IndexConfigCommonScale,
+                                        &scale, sizeof(scale))) {
+                        int32_t left, top, right, bottom;
+                        CHECK(mOutputFormat->findRect(kKeyCropRect,
+                                                      &left, &top,
+                                                      &right, &bottom));
+
+                        // The scale is in 16.16 format.
+                        // scale 1.0 = 0x010000. When there is no
+                        // need to change the display, skip it.
+                        LOGV("Get OMX_IndexConfigScale: 0x%lx/0x%lx",
+                                scale.xWidth, scale.xHeight);
+
+                        if (scale.xWidth != 0x010000) {
+                            mOutputFormat->setInt32(kKeyDisplayWidth,
+                                    ((right - left +  1) * scale.xWidth)  >> 16);
+                            mOutputPortSettingsHaveChanged = true;
+                        }
+
+                        if (scale.xHeight != 0x010000) {
+                            mOutputFormat->setInt32(kKeyDisplayHeight,
+                                    ((bottom  - top + 1) * scale.xHeight) >> 16);
+                            mOutputPortSettingsHaveChanged = true;
+                        }
+                    }
                 }
             }
             break;