vaapi: detect supported profiles in runtime.

content/common/gpu/media/vaapi_wrapper.cc

 // Copyright 2013 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 "content/common/gpu/media/vaapi_wrapper.h"
 
 #include <dlfcn.h>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 39 matching lines @@
     {VAConfigAttribRTFormat, VA_RT_FORMAT_YUV420},
 };
 
 // Attributes required for encode.
 static const VAConfigAttrib kEncodeVAConfigAttribs[] = {
     {VAConfigAttribRateControl, VA_RC_CBR},
     {VAConfigAttribEncPackedHeaders,
      VA_ENC_PACKED_HEADER_SEQUENCE | VA_ENC_PACKED_HEADER_PICTURE},
 };
 
+struct ProfileMap {
+  media::VideoCodecProfile profile;
+  VAProfile va_profile;
+};
+
+// A map between VideoCodecProfile and VAProfile.
+static const ProfileMap kProfileMap[] = {
+    {media::H264PROFILE_BASELINE, VAProfileH264Baseline},
+    {media::H264PROFILE_MAIN, VAProfileH264Main},
+    // TODO(posciak): See if we can/want support other variants of
+    // media::H264PROFILE_HIGH*.
+    {media::H264PROFILE_HIGH, VAProfileH264High}};

[kcwu, 2014/09/26 10:06:14]

how about }; in next line

+
+static std::vector<VAConfigAttrib> GetRequiredAttribs(
+    VaapiWrapper::CodecMode mode) {
+  std::vector<VAConfigAttrib> required_attribs;
+  required_attribs.insert(
+      required_attribs.end(),
+      kCommonVAConfigAttribs,
+      kCommonVAConfigAttribs + arraysize(kCommonVAConfigAttribs));
+  if (mode == VaapiWrapper::kEncode) {
+    required_attribs.insert(
+        required_attribs.end(),
+        kEncodeVAConfigAttribs,
+        kEncodeVAConfigAttribs + arraysize(kEncodeVAConfigAttribs));
+  }
+  return required_attribs;
+}
+
 // Maps Profile enum values to VaProfile values.
 static VAProfile ProfileToVAProfile(
     media::VideoCodecProfile profile,
     const std::vector<VAProfile>& supported_profiles) {
 
   VAProfile va_profile = VAProfileNone;
-
-  switch (profile) {
-    case media::H264PROFILE_BASELINE:
-      va_profile = VAProfileH264Baseline;
+  for (size_t i = 0; i < arraysize(kProfileMap); i++) {
+    if (kProfileMap[i].profile == profile) {
+      va_profile = kProfileMap[i].va_profile;
       break;
-    case media::H264PROFILE_MAIN:
-      va_profile = VAProfileH264Main;
-      break;
-    // TODO(posciak): See if we can/want support other variants
-    // of media::H264PROFILE_HIGH*.
-    case media::H264PROFILE_HIGH:
-      va_profile = VAProfileH264High;
-      break;
-    default:
-      break;
+    }
   }
 
   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,
@@ skipping 41 matching lines @@
     const base::Closure& report_error_to_uma_cb) {
   scoped_ptr<VaapiWrapper> vaapi_wrapper(new VaapiWrapper());
 
   if (!vaapi_wrapper->Initialize(
           mode, profile, x_display, report_error_to_uma_cb))
     vaapi_wrapper.reset();
 
   return vaapi_wrapper.Pass();
 }
 
+std::vector<media::VideoCodecProfile> VaapiWrapper::GetSupportedEncodeProfiles(
+    Display* x_display,
+    const base::Closure& report_error_to_uma_cb) {
+  std::vector<media::VideoCodecProfile> supported_profiles;
+
+  scoped_ptr<VaapiWrapper> wrapper(new VaapiWrapper());
+  if (!wrapper->VaInitialize(x_display, report_error_to_uma_cb)) {
+    return supported_profiles;
+  }
+
+  std::vector<VAProfile> va_profiles;
+  if (!wrapper->GetSupportedVaProfiles(&va_profiles))
+    return supported_profiles;
+
+  std::vector<VAConfigAttrib> required_attribs = GetRequiredAttribs(kEncode);
+  for (size_t i = 0; i < arraysize(kProfileMap); i++) {
+    VAProfile va_profile = VAProfileNone;
+    if (wrapper->IsProfileSupported(kProfileMap[i].profile,
+                                    va_profiles,
+                                    VAEntrypointEncSlice,
+                                    required_attribs,
+                                    &va_profile)) {
+      supported_profiles.push_back(kProfileMap[i].profile);
+    }
+  }
+  return supported_profiles;
+}
+
 void VaapiWrapper::TryToSetVADisplayAttributeToLocalGPU() {
   VADisplayAttribute item = {VADisplayAttribRenderMode,
                              1,  // At least support '_LOCAL_OVERLAY'.
                              -1,  // The maximum possible support 'ALL'.
                              VA_RENDER_MODE_LOCAL_GPU,
                              VA_DISPLAY_ATTRIB_SETTABLE};
 
   VAStatus va_res = vaSetDisplayAttributes(va_display_, &item, 1);
   if (va_res != VA_STATUS_SUCCESS)
     DVLOG(2) << "vaSetDisplayAttributes unsupported, ignoring by default.";
 }
 
-bool VaapiWrapper::Initialize(CodecMode mode,
-                              media::VideoCodecProfile profile,
-                              Display* x_display,
-                              const base::Closure& report_error_to_uma_cb) {
+bool VaapiWrapper::VaInitialize(Display* x_display,
+                                const base::Closure& report_error_to_uma_cb) {
   static bool vaapi_functions_initialized = PostSandboxInitialization();
   if (!vaapi_functions_initialized) {
     DVLOG(1) << "Failed to initialize VAAPI libs";
     return false;
   }
 
   report_error_to_uma_cb_ = report_error_to_uma_cb;
 
   base::AutoLock auto_lock(va_lock_);
 
   va_display_ = vaGetDisplay(x_display);
   if (!vaDisplayIsValid(va_display_)) {
     DVLOG(1) << "Could not get a valid VA display";
     return false;
   }
 
   VAStatus va_res = vaInitialize(va_display_, &major_version_, &minor_version_);
   VA_SUCCESS_OR_RETURN(va_res, "vaInitialize failed", false);
   DVLOG(1) << "VAAPI version: " << major_version_ << "." << minor_version_;
 
   if (VAAPIVersionLessThan(0, 34)) {
     DVLOG(1) << "VAAPI version < 0.34 is not supported.";
     return false;
   }
+  return true;
+}
 
+bool VaapiWrapper::GetSupportedVaProfiles(std::vector<VAProfile>* profiles) {
+  base::AutoLock auto_lock(va_lock_);
   // Query the driver for supported profiles.
   int max_profiles = vaMaxNumProfiles(va_display_);
   std::vector<VAProfile> supported_profiles(
       base::checked_cast<size_t>(max_profiles));
 
   int num_supported_profiles;
-  va_res = vaQueryConfigProfiles(
+  VAStatus va_res = vaQueryConfigProfiles(
       va_display_, &supported_profiles[0], &num_supported_profiles);
   VA_SUCCESS_OR_RETURN(va_res, "vaQueryConfigProfiles failed", false);
   if (num_supported_profiles < 0 || num_supported_profiles > max_profiles) {
     DVLOG(1) << "vaQueryConfigProfiles returned: " << num_supported_profiles;
     return false;
   }
 
   supported_profiles.resize(base::checked_cast<size_t>(num_supported_profiles));
+  *profiles = supported_profiles;
+  return true;
+}
 
-  VAProfile va_profile = ProfileToVAProfile(profile, supported_profiles);
-  if (va_profile == VAProfileNone) {
+bool VaapiWrapper::IsProfileSupported(
+    media::VideoCodecProfile profile,
+    const std::vector<VAProfile>& supported_profiles,
+    VAEntrypoint entrypoint,
+    const std::vector<VAConfigAttrib>& required_attribs,
+    VAProfile* va_profile) {
+  *va_profile = ProfileToVAProfile(profile, supported_profiles);
+  if (*va_profile == VAProfileNone) {
     DVLOG(1) << "Unsupported profile";
     return false;
   }
 
+  base::AutoLock auto_lock(va_lock_);
   // Query the driver for supported entrypoints.
   int max_entrypoints = vaMaxNumEntrypoints(va_display_);
   std::vector<VAEntrypoint> supported_entrypoints(
       base::checked_cast<size_t>(max_entrypoints));
 
   int num_supported_entrypoints;
-  va_res = vaQueryConfigEntrypoints(va_display_,
-                                    va_profile,
-                                    &supported_entrypoints[0],
-                                    &num_supported_entrypoints);
+  VAStatus va_res = vaQueryConfigEntrypoints(va_display_,
+                                             *va_profile,
+                                             &supported_entrypoints[0],
+                                             &num_supported_entrypoints);
   VA_SUCCESS_OR_RETURN(va_res, "vaQueryConfigEntrypoints failed", false);
   if (num_supported_entrypoints < 0 ||
       num_supported_entrypoints > max_entrypoints) {
     DVLOG(1) << "vaQueryConfigEntrypoints returned: "
              << num_supported_entrypoints;
     return false;
   }
 
-  VAEntrypoint entrypoint =
-      (mode == kEncode ? VAEntrypointEncSlice : VAEntrypointVLD);
-
   if (std::find(supported_entrypoints.begin(),
                 supported_entrypoints.end(),
                 entrypoint) == supported_entrypoints.end()) {
     DVLOG(1) << "Unsupported entrypoint";
     return false;
   }
 
   // Query the driver for required attributes.
-  std::vector<VAConfigAttrib> required_attribs;
-  required_attribs.insert(
-      required_attribs.end(),
-      kCommonVAConfigAttribs,
-      kCommonVAConfigAttribs + arraysize(kCommonVAConfigAttribs));
-  if (mode == kEncode) {
-    required_attribs.insert(
-        required_attribs.end(),
-        kEncodeVAConfigAttribs,
-        kEncodeVAConfigAttribs + arraysize(kEncodeVAConfigAttribs));
-  }
-
   std::vector<VAConfigAttrib> attribs = required_attribs;
   for (size_t i = 0; i < required_attribs.size(); ++i)
     attribs[i].value = 0;
 
   va_res = vaGetConfigAttributes(
-      va_display_, va_profile, entrypoint, &attribs[0], attribs.size());
+      va_display_, *va_profile, entrypoint, &attribs[0], attribs.size());
   VA_SUCCESS_OR_RETURN(va_res, "vaGetConfigAttributes failed", false);
 
   for (size_t i = 0; i < required_attribs.size(); ++i) {
     if (attribs[i].type != required_attribs[i].type ||
         (attribs[i].value & required_attribs[i].value) !=
             required_attribs[i].value) {
       DVLOG(1) << "Unsupported value " << required_attribs[i].value
                << " for attribute type " << required_attribs[i].type;
       return false;
     }
   }
+  return true;
+}
 
+bool VaapiWrapper::Initialize(CodecMode mode,
+                              media::VideoCodecProfile profile,
+                              Display* x_display,
+                              const base::Closure& report_error_to_uma_cb) {
+  if (!VaInitialize(x_display, report_error_to_uma_cb))
+    return false;
+  std::vector<VAProfile> supported_va_profiles;
+  if (!GetSupportedVaProfiles(&supported_va_profiles))
+    return false;
+  VAEntrypoint entrypoint =
+      (mode == kEncode ? VAEntrypointEncSlice : VAEntrypointVLD);
+  std::vector<VAConfigAttrib> required_attribs = GetRequiredAttribs(mode);
+  VAProfile va_profile = VAProfileNone;
+  if (!IsProfileSupported(profile,
+                          supported_va_profiles,
+                          entrypoint,
+                          required_attribs,
+                          &va_profile)) {
+    return false;
+  }
+
+  base::AutoLock auto_lock(va_lock_);
   TryToSetVADisplayAttributeToLocalGPU();
 
-  va_res = vaCreateConfig(va_display_,
-                          va_profile,
-                          entrypoint,
-                          &required_attribs[0],
-                          required_attribs.size(),
-                          &va_config_id_);
+  VAStatus va_res = vaCreateConfig(va_display_,
+                                   va_profile,
+                                   entrypoint,
+                                   &required_attribs[0],
+                                   required_attribs.size(),
+                                   &va_config_id_);
   VA_SUCCESS_OR_RETURN(va_res, "vaCreateConfig failed", false);
 
   return true;
 }
 
 void VaapiWrapper::Deinitialize() {
   base::AutoLock auto_lock(va_lock_);
 
   if (va_config_id_ != VA_INVALID_ID) {
     VAStatus va_res = vaDestroyConfig(va_display_, va_config_id_);
@@ skipping 385 matching lines @@
 
 // static
 bool VaapiWrapper::PostSandboxInitialization() {
   StubPathMap paths;
   paths[kModuleVa].push_back(kVaLib);
 
   return InitializeStubs(paths);
 }
 
 }  // namespace content