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Unified Diff: ppapi/proxy/video_decoder_resource.h

Issue 270213004: Implement Pepper PPB_VideoDecoder interface. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Disable some unit tests on Win 64 bit builds. Created 6 years, 7 months ago
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Index: ppapi/proxy/video_decoder_resource.h
diff --git a/ppapi/proxy/video_decoder_resource.h b/ppapi/proxy/video_decoder_resource.h
new file mode 100644
index 0000000000000000000000000000000000000000..19ccffb94ad41558f6ab29fa7237641a47d678ee
--- /dev/null
+++ b/ppapi/proxy/video_decoder_resource.h
@@ -0,0 +1,179 @@
+// Copyright (c) 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.
+
+#ifndef PPAPI_PROXY_VIDEO_DECODER_RESOURCE_H_
+#define PPAPI_PROXY_VIDEO_DECODER_RESOURCE_H_
+
+#include <queue>
+
+#include "base/containers/hash_tables.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "ppapi/proxy/connection.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/shared_impl/resource.h"
+#include "ppapi/shared_impl/scoped_pp_resource.h"
+#include "ppapi/thunk/ppb_video_decoder_api.h"
+
+namespace gpu {
+namespace gles2 {
+class GLES2Implementation;
+}
+}
+
+namespace ppapi {
+
+class PPB_Graphics3D_Shared;
+class TrackedCallback;
+
+namespace proxy {
+
+class PPAPI_PROXY_EXPORT VideoDecoderResource
+ : public PluginResource,
+ public thunk::PPB_VideoDecoder_API {
+ public:
+ VideoDecoderResource(Connection connection, PP_Instance instance);
+ virtual ~VideoDecoderResource();
+
+ // Resource overrides.
+ virtual thunk::PPB_VideoDecoder_API* AsPPB_VideoDecoder_API() OVERRIDE;
+
+ // PPB_VideoDecoder_API implementation.
+ virtual int32_t Initialize(PP_Resource graphics_context,
+ PP_VideoProfile profile,
+ PP_Bool allow_software_fallback,
+ scoped_refptr<TrackedCallback> callback) OVERRIDE;
+ virtual int32_t Decode(uint32_t decode_id,
+ uint32_t size,
+ const void* buffer,
+ scoped_refptr<TrackedCallback> callback) OVERRIDE;
+ virtual int32_t GetPicture(PP_VideoPicture* picture,
+ scoped_refptr<TrackedCallback> callback) OVERRIDE;
+ virtual void RecyclePicture(const PP_VideoPicture* picture) OVERRIDE;
+ virtual int32_t Flush(scoped_refptr<TrackedCallback> callback) OVERRIDE;
+ virtual int32_t Reset(scoped_refptr<TrackedCallback> callback) OVERRIDE;
+
+ // PluginResource implementation.
+ virtual void OnReplyReceived(const ResourceMessageReplyParams& params,
+ const IPC::Message& msg) OVERRIDE;
+
+ // Called only by unit tests. This bypasses Graphics3D setup, which doesn't
+ // work in ppapi::proxy::PluginProxyTest.
+ void SetForTest();
+
+ private:
+ // Struct to hold a shared memory buffer.
+ struct ShmBuffer {
+ ShmBuffer(scoped_ptr<base::SharedMemory> shm,
+ uint32_t size,
+ uint32_t shm_id);
+ ~ShmBuffer();
+
+ const scoped_ptr<base::SharedMemory> shm;
+ void* addr;
+ // Index into shm_buffers_ vector, used as an id. This should map 1:1 to
+ // the index on the host side of the proxy.
+ const uint32_t shm_id;
+ };
+
+ // Struct to hold texture information.
+ struct Texture {
+ Texture(uint32_t texture_target, const PP_Size& size);
+ ~Texture();
+
+ const uint32_t texture_target;
+ const PP_Size size;
+ };
+
+ // Struct to hold a picture received from the decoder.
+ struct Picture {
+ Picture(int32_t decode_id, uint32_t texture_id);
+ ~Picture();
+
+ int32_t decode_id;
+ uint32_t texture_id;
+ };
+
+ int32_t InitializeInternal(PP_Resource graphics_context,
+ PP_VideoProfile profile,
+ PP_Bool allow_software_fallback,
+ scoped_refptr<TrackedCallback> callback,
+ bool testing);
+
+ // Unsolicited reply message handlers.
+ void OnPluginMsgRequestTextures(const ResourceMessageReplyParams& params,
+ uint32_t num_textures,
+ const PP_Size& size,
+ uint32_t texture_target);
+ void OnPluginMsgPictureReady(const ResourceMessageReplyParams& params,
+ int32_t decode_id,
+ uint32_t texture_id);
+ void OnPluginMsgDismissPicture(const ResourceMessageReplyParams& params,
+ uint32_t texture_id);
+ void OnPluginMsgNotifyError(const ResourceMessageReplyParams& params,
+ int32_t error);
+
+ // Reply message handlers for operations that are done in the host.
+ void OnPluginMsgInitializeComplete(const ResourceMessageReplyParams& params);
+ void OnPluginMsgDecodeComplete(const ResourceMessageReplyParams& params,
+ uint32_t shm_id);
+ void OnPluginMsgFlushComplete(const ResourceMessageReplyParams& params);
+ void OnPluginMsgResetComplete(const ResourceMessageReplyParams& params);
+
+ void RunCallbackWithError(scoped_refptr<TrackedCallback>* callback);
+ void DeleteGLTexture(uint32_t texture_id);
+ void WriteNextPicture(PP_VideoPicture* picture);
+
+ // ScopedVector to own the shared memory buffers.
+ ScopedVector<ShmBuffer> shm_buffers_;
+
+ // List of available shared memory buffers.
+ typedef std::vector<ShmBuffer*> ShmBufferList;
+ ShmBufferList available_shm_buffers_;
+
+ // Map of GL texture id to texture info.
+ typedef base::hash_map<uint32_t, Texture> TextureMap;
+ TextureMap textures_;
+
+ // Queue of received pictures.
+ typedef std::queue<Picture> PictureQueue;
+ PictureQueue received_pictures_;
+
+ // Pending callbacks.
+ scoped_refptr<TrackedCallback> initialize_callback_;
+ scoped_refptr<TrackedCallback> decode_callback_;
+ scoped_refptr<TrackedCallback> get_picture_callback_;
+ scoped_refptr<TrackedCallback> flush_callback_;
+ scoped_refptr<TrackedCallback> reset_callback_;
+
+ // Number of Decode calls made, mod 2^31, to serve as a uid for each decode.
+ int32_t num_decodes_;
+ // The maximum delay (in Decode calls) before we receive a picture. If we
+ // haven't received a picture from a Decode call after this many successive
+ // calls to Decode, then we will never receive a picture from the call.
+ // Note that this isn't guaranteed by H264 or other codecs. In practice, this
+ // number is less than 16. Make it much larger just to be safe.
+ // NOTE: because we count decodes mod 2^31, this value must be a power of 2.
+ static const int kMaximumPictureDelay = 128;
+ uint32_t decode_ids_[kMaximumPictureDelay];
+
+ // State for pending get_picture_callback_.
+ PP_VideoPicture* get_picture_;
+
+ ScopedPPResource graphics3d_;
+ gpu::gles2::GLES2Implementation* gles2_impl_;
+
+ bool initialized_;
+ bool testing_;
+ int32_t decoder_last_error_;
+
+ DISALLOW_COPY_AND_ASSIGN(VideoDecoderResource);
+};
+
+} // namespace proxy
+} // namespace ppapi
+
+#endif // PPAPI_PROXY_VIDEO_DECODER_RESOURCE_H_
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