Reland: H264 HW encode using VideoToolbox

media/base/mac/videotoolbox_glue.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/mac/videotoolbox_glue.h"
 
 #include <dlfcn.h>
 #import <Foundation/Foundation.h>
 
 #include "base/lazy_instance.h"
@@ skipping 35 matching lines @@
   VTCompressionSessionEncodeFrameMethod VTCompressionSessionEncodeFrame;
   VTCompressionSessionGetPixelBufferPoolMethod
       VTCompressionSessionGetPixelBufferPool;
   VTCompressionSessionInvalidateMethod VTCompressionSessionInvalidate;
   VTCompressionSessionCompleteFramesMethod VTCompressionSessionCompleteFrames;
   VTSessionSetPropertyMethod VTSessionSetProperty;
 
   CFStringRef* kVTCompressionPropertyKey_AllowFrameReordering;
   CFStringRef* kVTCompressionPropertyKey_AverageBitRate;
   CFStringRef* kVTCompressionPropertyKey_ColorPrimaries;
+  CFStringRef* kVTCompressionPropertyKey_DataRateLimits;
   CFStringRef* kVTCompressionPropertyKey_ExpectedFrameRate;
   CFStringRef* kVTCompressionPropertyKey_MaxFrameDelayCount;
   CFStringRef* kVTCompressionPropertyKey_MaxKeyFrameInterval;
   CFStringRef* kVTCompressionPropertyKey_MaxKeyFrameIntervalDuration;
   CFStringRef* kVTCompressionPropertyKey_ProfileLevel;
   CFStringRef* kVTCompressionPropertyKey_RealTime;
   CFStringRef* kVTCompressionPropertyKey_TransferFunction;
   CFStringRef* kVTCompressionPropertyKey_YCbCrMatrix;
   CFStringRef* kVTEncodeFrameOptionKey_ForceKeyFrame;
   CFStringRef* kVTProfileLevel_H264_Baseline_AutoLevel;
   CFStringRef* kVTProfileLevel_H264_Main_AutoLevel;
   CFStringRef* kVTProfileLevel_H264_Extended_AutoLevel;
   CFStringRef* kVTProfileLevel_H264_High_AutoLevel;
   CFStringRef*
       kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder;
+  CFStringRef*
+      kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder;
 };
 
 // Lazy-instance responsible for loading VideoToolbox.
 class VideoToolboxGlue::Loader {
  public:
   Loader() {
     NSBundle* bundle = [NSBundle
         bundleWithPath:@"/System/Library/Frameworks/VideoToolbox.framework"];
     const char* path = [[bundle executablePath] fileSystemRepresentation];
     if (!path)
@@ skipping 10 matching lines @@
     LOAD_SYMBOL(VTCompressionSessionCreate)
     LOAD_SYMBOL(VTCompressionSessionEncodeFrame)
     LOAD_SYMBOL(VTCompressionSessionGetPixelBufferPool)
     LOAD_SYMBOL(VTCompressionSessionInvalidate)
     LOAD_SYMBOL(VTCompressionSessionCompleteFrames)
     LOAD_SYMBOL(VTSessionSetProperty)
 
     LOAD_SYMBOL(kVTCompressionPropertyKey_AllowFrameReordering)
     LOAD_SYMBOL(kVTCompressionPropertyKey_AverageBitRate)
     LOAD_SYMBOL(kVTCompressionPropertyKey_ColorPrimaries)
+    LOAD_SYMBOL(kVTCompressionPropertyKey_DataRateLimits)
     LOAD_SYMBOL(kVTCompressionPropertyKey_ExpectedFrameRate)
     LOAD_SYMBOL(kVTCompressionPropertyKey_MaxFrameDelayCount)
     LOAD_SYMBOL(kVTCompressionPropertyKey_MaxKeyFrameInterval)
     LOAD_SYMBOL(kVTCompressionPropertyKey_MaxKeyFrameIntervalDuration)
     LOAD_SYMBOL(kVTCompressionPropertyKey_ProfileLevel)
     LOAD_SYMBOL(kVTCompressionPropertyKey_RealTime)
     LOAD_SYMBOL(kVTCompressionPropertyKey_TransferFunction)
     LOAD_SYMBOL(kVTCompressionPropertyKey_YCbCrMatrix)
     LOAD_SYMBOL(kVTEncodeFrameOptionKey_ForceKeyFrame);
     LOAD_SYMBOL(kVTProfileLevel_H264_Baseline_AutoLevel)
     LOAD_SYMBOL(kVTProfileLevel_H264_Main_AutoLevel)
     LOAD_SYMBOL(kVTProfileLevel_H264_Extended_AutoLevel)
     LOAD_SYMBOL(kVTProfileLevel_H264_High_AutoLevel)
     LOAD_SYMBOL(
         kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder)
+    LOAD_SYMBOL(
+        kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder)
 
 #undef LOAD_SYMBOL
 
     glue_.library_ = &library_;
   }
 
   const VideoToolboxGlue* glue() const {
     return (glue_.library_) ? &glue_ : NULL;
   }
 
@@ skipping 83 matching lines @@
                                                 CFTypeRef propertyValue) const {
   return library_->VTSessionSetProperty(session, propertyKey, propertyValue);
 }
 
 #define KEY_ACCESSOR(KEY) \
   CFStringRef VideoToolboxGlue::KEY() const { return *library_->KEY; }
 
 KEY_ACCESSOR(kVTCompressionPropertyKey_AllowFrameReordering)
 KEY_ACCESSOR(kVTCompressionPropertyKey_AverageBitRate)
 KEY_ACCESSOR(kVTCompressionPropertyKey_ColorPrimaries)
+KEY_ACCESSOR(kVTCompressionPropertyKey_DataRateLimits)
 KEY_ACCESSOR(kVTCompressionPropertyKey_ExpectedFrameRate)
 KEY_ACCESSOR(kVTCompressionPropertyKey_MaxFrameDelayCount)
 KEY_ACCESSOR(kVTCompressionPropertyKey_MaxKeyFrameInterval)
 KEY_ACCESSOR(kVTCompressionPropertyKey_MaxKeyFrameIntervalDuration)
 KEY_ACCESSOR(kVTCompressionPropertyKey_ProfileLevel)
 KEY_ACCESSOR(kVTCompressionPropertyKey_RealTime)
 KEY_ACCESSOR(kVTCompressionPropertyKey_TransferFunction)
 KEY_ACCESSOR(kVTCompressionPropertyKey_YCbCrMatrix)
 KEY_ACCESSOR(kVTEncodeFrameOptionKey_ForceKeyFrame)
 KEY_ACCESSOR(kVTProfileLevel_H264_Baseline_AutoLevel)
 KEY_ACCESSOR(kVTProfileLevel_H264_Main_AutoLevel)
 KEY_ACCESSOR(kVTProfileLevel_H264_Extended_AutoLevel)
 KEY_ACCESSOR(kVTProfileLevel_H264_High_AutoLevel)
 KEY_ACCESSOR(kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder)
+KEY_ACCESSOR(
+    kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder)
 
 #undef KEY_ACCESSOR