1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // This file contains an implementation of VaapiWrapper, used by
6 // VaapiVideoDecodeAccelerator and VaapiH264Decoder for decode,
7 // and VaapiVideoEncodeAccelerator for encode, to interface
8 // with libva (VA-API library for hardware video codec).
10 #ifndef CONTENT_COMMON_GPU_MEDIA_VAAPI_WRAPPER_H_
11 #define CONTENT_COMMON_GPU_MEDIA_VAAPI_WRAPPER_H_
16 #include "base/callback.h"
17 #include "base/memory/ref_counted.h"
18 #include "base/synchronization/lock.h"
19 #include "content/common/content_export.h"
20 #include "content/common/gpu/media/va_surface.h"
21 #include "media/base/video_decoder_config.h"
22 #include "media/base/video_frame.h"
23 #include "third_party/libva/va/va_x11.h"
24 #include "ui/gfx/size.h"
28 // This class handles VA-API calls and ensures proper locking of VA-API calls
29 // to libva, the userspace shim to the HW codec driver. libva is not
30 // thread-safe, so we have to perform locking ourselves. This class is fully
31 // synchronous and its methods can be called from any thread and may wait on
32 // the va_lock_ while other, concurrent calls run.
34 // This class is responsible for managing VAAPI connection, contexts and state.
35 // It is also responsible for managing and freeing VABuffers (not VASurfaces),
36 // which are used to queue parameters and slice data to the HW codec,
37 // as well as underlying memory for VASurfaces themselves.
38 class CONTENT_EXPORT VaapiWrapper {
45 // |report_error_to_uma_cb| will be called independently from reporting
46 // errors to clients via method return values.
47 static scoped_ptr<VaapiWrapper> Create(
49 media::VideoCodecProfile profile,
51 const base::Closure& report_error_to_uma_cb);
53 // Return the supported encode profiles.
54 static std::vector<media::VideoCodecProfile> GetSupportedEncodeProfiles(
56 const base::Closure& report_error_to_uma_cb);
60 // Create |num_surfaces| backing surfaces in driver for VASurfaces, each
61 // of size |size|. Returns true when successful, with the created IDs in
62 // |va_surfaces| to be managed and later wrapped in VASurfaces.
63 // The client must DestroySurfaces() each time before calling this method
64 // again to free the allocated surfaces first, but is not required to do so
65 // at destruction time, as this will be done automatically from
67 bool CreateSurfaces(gfx::Size size,
69 std::vector<VASurfaceID>* va_surfaces);
71 // Free all memory allocated in CreateSurfaces.
72 void DestroySurfaces();
74 // Submit parameters or slice data of |va_buffer_type|, copying them from
75 // |buffer| of size |size|, into HW codec. The data in |buffer| is no
76 // longer needed and can be freed after this method returns.
77 // Data submitted via this method awaits in the HW codec until
78 // ExecuteAndDestroyPendingBuffers() is called to execute or
79 // DestroyPendingBuffers() is used to cancel a pending job.
80 bool SubmitBuffer(VABufferType va_buffer_type, size_t size, void* buffer);
82 // Submit a VAEncMiscParameterBuffer of given |misc_param_type|, copying its
83 // data from |buffer| of size |size|, into HW codec. The data in |buffer| is
84 // no longer needed and can be freed after this method returns.
85 // Data submitted via this method awaits in the HW codec until
86 // ExecuteAndDestroyPendingBuffers() is called to execute or
87 // DestroyPendingBuffers() is used to cancel a pending job.
88 bool SubmitVAEncMiscParamBuffer(VAEncMiscParameterType misc_param_type,
92 // Cancel and destroy all buffers queued to the HW codec via SubmitBuffer().
93 // Useful when a pending job is to be cancelled (on reset or error).
94 void DestroyPendingBuffers();
96 // Execute job in hardware on target |va_surface_id| and destroy pending
97 // buffers. Return false if Execute() fails.
98 bool ExecuteAndDestroyPendingBuffers(VASurfaceID va_surface_id);
100 // Put data from |va_surface_id| into |x_pixmap| of size |size|,
101 // converting/scaling to it.
102 bool PutSurfaceIntoPixmap(VASurfaceID va_surface_id,
104 gfx::Size dest_size);
106 // Returns true if the VAAPI version is less than the specified version.
107 bool VAAPIVersionLessThan(int major, int minor);
109 // Get a VAImage from a VASurface and map it into memory. The VAImage should
110 // be released using the ReturnVaImage function. Returns true when successful.
111 // This is intended for testing only.
112 bool GetVaImageForTesting(VASurfaceID va_surface_id,
116 // Release the VAImage (and the associated memory mapping) obtained from
117 // GetVaImage(). This is intended for testing only.
118 void ReturnVaImageForTesting(VAImage* image);
120 // Upload contents of |frame| into |va_surface_id| for encode.
121 bool UploadVideoFrameToSurface(const scoped_refptr<media::VideoFrame>& frame,
122 VASurfaceID va_surface_id);
124 // Create a buffer of |size| bytes to be used as encode output.
125 bool CreateCodedBuffer(size_t size, VABufferID* buffer_id);
127 // Download the contents of the buffer with given |buffer_id| into a buffer of
128 // size |target_size|, pointed to by |target_ptr|. The number of bytes
129 // downloaded will be returned in |coded_data_size|. |sync_surface_id| will
130 // be used as a sync point, i.e. it will have to become idle before starting
131 // the download. |sync_surface_id| should be the source surface passed
132 // to the encode job.
133 bool DownloadAndDestroyCodedBuffer(VABufferID buffer_id,
134 VASurfaceID sync_surface_id,
137 size_t* coded_data_size);
139 // Destroy all previously-allocated (and not yet destroyed) coded buffers.
140 void DestroyCodedBuffers();
145 bool Initialize(CodecMode mode,
146 media::VideoCodecProfile profile,
148 const base::Closure& report_error_to_uma_cb);
150 bool VaInitialize(Display* x_display,
151 const base::Closure& report_error_to_uma_cb);
152 bool GetSupportedVaProfiles(std::vector<VAProfile>* profiles);
153 bool IsEntrypointSupported(VAProfile va_profile, VAEntrypoint entrypoint);
154 bool AreAttribsSupported(VAProfile va_profile,
155 VAEntrypoint entrypoint,
156 const std::vector<VAConfigAttrib>& required_attribs);
158 // Execute pending job in hardware and destroy pending buffers. Return false
159 // if vaapi driver refuses to accept parameter or slice buffers submitted
160 // by client, or if execution fails in hardware.
161 bool Execute(VASurfaceID va_surface_id);
163 // Attempt to set render mode to "render to texture.". Failure is non-fatal.
164 void TryToSetVADisplayAttributeToLocalGPU();
166 // Lazily initialize static data after sandbox is enabled. Return false on
168 static bool PostSandboxInitialization();
170 // Libva is not thread safe, so we have to do locking for it ourselves.
171 // This lock is to be taken for the duration of all VA-API calls and for
172 // the entire job submission sequence in ExecuteAndDestroyPendingBuffers().
175 // Allocated ids for VASurfaces.
176 std::vector<VASurfaceID> va_surface_ids_;
178 // The VAAPI version.
179 int major_version_, minor_version_;
182 // Both valid after successful Initialize() and until Deinitialize().
183 VADisplay va_display_;
184 VAConfigID va_config_id_;
185 // Created for the current set of va_surface_ids_ in CreateSurfaces() and
186 // valid until DestroySurfaces().
187 VAContextID va_context_id_;
189 // Data queued up for HW codec, to be committed on next execution.
190 std::vector<VABufferID> pending_slice_bufs_;
191 std::vector<VABufferID> pending_va_bufs_;
193 // Bitstream buffers for encode.
194 std::set<VABufferID> coded_buffers_;
196 // Called to report codec errors to UMA. Errors to clients are reported via
197 // return values from public methods.
198 base::Closure report_error_to_uma_cb_;
200 DISALLOW_COPY_AND_ASSIGN(VaapiWrapper);
203 } // namespace content
205 #endif // CONTENT_COMMON_GPU_MEDIA_VAAPI_WRAPPER_H_