Add JPEG decoder for VAAPI JPEG decode acceleration

content/common/gpu/media/vaapi_wrapper.cc

Index: content/common/gpu/media/vaapi_wrapper.cc
diff --git a/content/common/gpu/media/vaapi_wrapper.cc b/content/common/gpu/media/vaapi_wrapper.cc
index 63450b4a58001dba70505640f3b9197e7f75c896..f920c6178a837d6caee9c7a6095a1c8508b960cb 100644
--- a/content/common/gpu/media/vaapi_wrapper.cc
+++ b/content/common/gpu/media/vaapi_wrapper.cc
@@ -99,10 +99,7 @@ static std::vector<VAConfigAttrib> GetRequiredAttribs(
 }
 
 // Maps Profile enum values to VaProfile values.
-static VAProfile ProfileToVAProfile(
-    media::VideoCodecProfile profile,
-    const std::vector<VAProfile>& supported_profiles) {
-
+static VAProfile ProfileToVAProfile(media::VideoCodecProfile profile) {
   VAProfile va_profile = VAProfileNone;
   for (size_t i = 0; i < arraysize(kProfileMap); i++) {
     if (kProfileMap[i].profile == profile) {
@@ -110,17 +107,22 @@ static VAProfile ProfileToVAProfile(
       break;
     }
   }
+  return va_profile;
+}
 
+// crbug.com/345569: media::ProfileIDToVideoCodecProfile() currently strips
+// the information whether the profile is constrained or not, so we have no
+// way to know here. Try for baseline first, but if it is not supported,
+// try constrained baseline and hope this is what it actually is
+// (which in practice is true for a great majority of cases).
+static VAProfile FallbackVaProfileIfNecessary(
+    VAProfile va_profile,
+    const std::vector<VAProfile>& supported_profiles) {
   bool supported = std::find(supported_profiles.begin(),
                              supported_profiles.end(),
                              va_profile) != supported_profiles.end();
 
   if (!supported && va_profile == VAProfileH264Baseline) {
-    // crbug.com/345569: media::ProfileIDToVideoCodecProfile() currently strips
-    // the information whether the profile is constrained or not, so we have no
-    // way to know here. Try for baseline first, but if it is not supported,
-    // try constrained baseline and hope this is what it actually is
-    // (which in practice is true for a great majority of cases).
     if (std::find(supported_profiles.begin(),
                   supported_profiles.end(),
                   VAProfileH264ConstrainedBaseline) !=
@@ -164,12 +166,27 @@ VaapiWrapper::~VaapiWrapper() {
 
 scoped_ptr<VaapiWrapper> VaapiWrapper::Create(
     CodecMode mode,
+    VAProfile va_profile,
+    const base::Closure& report_error_to_uma_cb) {
+  scoped_ptr<VaapiWrapper> vaapi_wrapper(new VaapiWrapper());
+
+  if (!vaapi_wrapper->Initialize(mode, va_profile, false,
+                                 report_error_to_uma_cb))
+    return nullptr;
+
+  return vaapi_wrapper.Pass();
+}
+
+scoped_ptr<VaapiWrapper> VaapiWrapper::CreateForVideoCodec(
+    CodecMode mode,
     media::VideoCodecProfile profile,
     const base::Closure& report_error_to_uma_cb) {
   scoped_ptr<VaapiWrapper> vaapi_wrapper(new VaapiWrapper());
 
-  if (!vaapi_wrapper->Initialize(mode, profile, report_error_to_uma_cb))
-    vaapi_wrapper.reset();
+  VAProfile va_profile = ProfileToVAProfile(profile);
+  if (!vaapi_wrapper->Initialize(mode, va_profile, true,
+                                 report_error_to_uma_cb))
+    return nullptr;
 
   return vaapi_wrapper.Pass();
 }
@@ -189,8 +206,8 @@ std::vector<media::VideoCodecProfile> VaapiWrapper::GetSupportedEncodeProfiles(
 
   std::vector<VAConfigAttrib> required_attribs = GetRequiredAttribs(kEncode);
   for (size_t i = 0; i < arraysize(kProfileMap); i++) {
-    VAProfile va_profile =
-        ProfileToVAProfile(kProfileMap[i].profile, va_profiles);
+    VAProfile va_profile = ProfileToVAProfile(kProfileMap[i].profile);
+    va_profile = FallbackVaProfileIfNecessary(va_profile, va_profiles);
     if (va_profile != VAProfileNone &&
         wrapper->IsEntrypointSupported(va_profile, VAEntrypointEncSlice) &&
         wrapper->AreAttribsSupported(
@@ -339,14 +356,18 @@ bool VaapiWrapper::AreAttribsSupported(
 }
 
 bool VaapiWrapper::Initialize(CodecMode mode,
-                              media::VideoCodecProfile profile,
+                              VAProfile va_profile,
+                              bool va_profile_degraded,
                               const base::Closure& report_error_to_uma_cb) {
   if (!VaInitialize(report_error_to_uma_cb))
     return false;
-  std::vector<VAProfile> supported_va_profiles;
-  if (!GetSupportedVaProfiles(&supported_va_profiles))
-    return false;
-  VAProfile va_profile = ProfileToVAProfile(profile, supported_va_profiles);
+  if (va_profile_degraded) {
+    std::vector<VAProfile> supported_va_profiles;
+    if (!GetSupportedVaProfiles(&supported_va_profiles))
+      return false;
+    va_profile =
+        FallbackVaProfileIfNecessary(va_profile, supported_va_profiles);
+  }
   if (va_profile == VAProfileNone) {
     DVLOG(1) << "Unsupported profile";
     return false;
@@ -665,9 +686,9 @@ bool VaapiWrapper::PutSurfaceIntoPixmap(VASurfaceID va_surface_id,
 }
 #endif  // USE_X11
 
-bool VaapiWrapper::GetVaImageForTesting(VASurfaceID va_surface_id,
-                                        VAImage* image,
-                                        void** mem) {
+bool VaapiWrapper::GetDerivedVaImage(VASurfaceID va_surface_id,
+                                     VAImage* image,
+                                     void** mem) {
   base::AutoLock auto_lock(va_lock_);
 
   VAStatus va_res = vaSyncSurface(va_display_, va_surface_id);
@@ -691,7 +712,40 @@ bool VaapiWrapper::GetVaImageForTesting(VASurfaceID va_surface_id,
   return false;
 }
 
-void VaapiWrapper::ReturnVaImageForTesting(VAImage* image) {
+bool VaapiWrapper::GetVaImage(VASurfaceID va_surface_id,
+                              VAImageFormat* format,
+                              const gfx::Size& size,
+                              VAImage* image,
+                              void** mem) {
+  base::AutoLock auto_lock(va_lock_);
+
+  VAStatus va_res = vaSyncSurface(va_display_, va_surface_id);
+  VA_SUCCESS_OR_RETURN(va_res, "Failed syncing surface", false);
+
+  va_res =
+      vaCreateImage(va_display_, format, size.width(), size.height(), image);
+  VA_SUCCESS_OR_RETURN(va_res, "vaCreateImage failed", false);
+
+  va_res = vaGetImage(va_display_, va_surface_id, 0, 0, size.width(),
+                      size.height(), image->image_id);
+  VA_LOG_ON_ERROR(va_res, "vaGetImage failed");
+
+  if (va_res == VA_STATUS_SUCCESS) {
+    // Map the VAImage into memory
+    va_res = vaMapBuffer(va_display_, image->buf, mem);
+    VA_LOG_ON_ERROR(va_res, "vaMapBuffer failed");
+  }
+
+  if (va_res != VA_STATUS_SUCCESS) {
+    va_res = vaDestroyImage(va_display_, image->image_id);
+    VA_LOG_ON_ERROR(va_res, "vaDestroyImage failed");
+    return false;
+  }
+
+  return true;
+}
+
+void VaapiWrapper::ReturnVaImage(VAImage* image) {
   base::AutoLock auto_lock(va_lock_);
 
   VAStatus va_res = vaUnmapBuffer(va_display_, image->buf);