1 // Copyright (c) 2014 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. 4 5 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DECODER_HOST_H_ 6 #define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DECODER_HOST_H_ 7 8 #include <map> 9 #include <vector> 10 11 #include "base/basictypes.h" 12 #include "base/containers/hash_tables.h" 13 #include "base/memory/scoped_ptr.h" 14 #include "base/memory/scoped_vector.h" 15 #include "content/common/content_export.h" 16 #include "media/video/video_decode_accelerator.h" 17 #include "ppapi/c/pp_codecs.h" 18 #include "ppapi/host/host_message_context.h" 19 #include "ppapi/host/resource_host.h" 20 #include "ppapi/proxy/resource_message_params.h" 21 22 namespace base { 23 class SharedMemory; 24 } 25 26 namespace content { 27 28 class PPB_Graphics3D_Impl; 29 class RendererPpapiHost; 30 class RenderViewImpl; 31 class VideoDecoderShim; 32 33 class CONTENT_EXPORT PepperVideoDecoderHost 34 : public ppapi::host::ResourceHost, 35 public media::VideoDecodeAccelerator::Client { 36 public: 37 PepperVideoDecoderHost(RendererPpapiHost* host, 38 PP_Instance instance, 39 PP_Resource resource); 40 virtual ~PepperVideoDecoderHost(); 41 42 private: 43 struct PendingDecode { 44 PendingDecode(uint32_t shm_id, 45 const ppapi::host::ReplyMessageContext& reply_context); 46 ~PendingDecode(); 47 48 const uint32_t shm_id; 49 const ppapi::host::ReplyMessageContext reply_context; 50 }; 51 52 friend class VideoDecoderShim; 53 54 // ResourceHost implementation. 55 virtual int32_t OnResourceMessageReceived( 56 const IPC::Message& msg, 57 ppapi::host::HostMessageContext* context) OVERRIDE; 58 59 // media::VideoDecodeAccelerator::Client implementation. 60 virtual void ProvidePictureBuffers(uint32 requested_num_of_buffers, 61 const gfx::Size& dimensions, 62 uint32 texture_target) OVERRIDE; 63 virtual void DismissPictureBuffer(int32 picture_buffer_id) OVERRIDE; 64 virtual void PictureReady(const media::Picture& picture) OVERRIDE; 65 virtual void NotifyEndOfBitstreamBuffer(int32 bitstream_buffer_id) OVERRIDE; 66 virtual void NotifyFlushDone() OVERRIDE; 67 virtual void NotifyResetDone() OVERRIDE; 68 virtual void NotifyError(media::VideoDecodeAccelerator::Error error) OVERRIDE; 69 70 int32_t OnHostMsgInitialize(ppapi::host::HostMessageContext* context, 71 const ppapi::HostResource& graphics_context, 72 PP_VideoProfile profile, 73 bool allow_software_fallback); 74 int32_t OnHostMsgGetShm(ppapi::host::HostMessageContext* context, 75 uint32_t shm_id, 76 uint32_t shm_size); 77 int32_t OnHostMsgDecode(ppapi::host::HostMessageContext* context, 78 uint32_t shm_id, 79 uint32_t size, 80 int32_t decode_id); 81 int32_t OnHostMsgAssignTextures(ppapi::host::HostMessageContext* context, 82 const PP_Size& size, 83 const std::vector<uint32_t>& texture_ids); 84 int32_t OnHostMsgRecyclePicture(ppapi::host::HostMessageContext* context, 85 uint32_t picture_id); 86 int32_t OnHostMsgFlush(ppapi::host::HostMessageContext* context); 87 int32_t OnHostMsgReset(ppapi::host::HostMessageContext* context); 88 89 // These methods are needed by VideoDecodeShim, to look like a 90 // VideoDecodeAccelerator. 91 void OnInitializeComplete(int32_t result); 92 const uint8_t* DecodeIdToAddress(uint32_t decode_id); 93 void RequestTextures(uint32 requested_num_of_buffers, 94 const gfx::Size& dimensions, 95 uint32 texture_target, 96 const std::vector<gpu::Mailbox>& mailboxes); 97 98 // Non-owning pointer. 99 RendererPpapiHost* renderer_ppapi_host_; 100 101 scoped_ptr<media::VideoDecodeAccelerator> decoder_; 102 103 // A vector holding our shm buffers, in sync with a similar vector in the 104 // resource. We use a buffer's index in these vectors as its id on both sides 105 // of the proxy. Only add buffers or update them in place so as not to 106 // invalidate these ids. 107 ScopedVector<base::SharedMemory> shm_buffers_; 108 // A vector of true/false indicating if a shm buffer is in use by the decoder. 109 // This is parallel to |shm_buffers_|. 110 std::vector<uint8_t> shm_buffer_busy_; 111 112 // Maps decode uid to PendingDecode info. 113 typedef base::hash_map<int32_t, PendingDecode> PendingDecodeMap; 114 PendingDecodeMap pending_decodes_; 115 116 ppapi::host::ReplyMessageContext flush_reply_context_; 117 ppapi::host::ReplyMessageContext reset_reply_context_; 118 // Only used when in software fallback mode. 119 ppapi::host::ReplyMessageContext initialize_reply_context_; 120 121 bool initialized_; 122 123 DISALLOW_COPY_AND_ASSIGN(PepperVideoDecoderHost); 124 }; 125 126 } // namespace content 127 128 #endif // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DECODER_HOST_H_ 129