src/ppapi/thunk/ppb_video_decoder_thunk.cc

   1 // Copyright (c) 2012 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 #include "ppapi/c/pp_errors.h"
   6 #include "ppapi/shared_impl/tracked_callback.h"
   7 #include "ppapi/thunk/enter.h"
   8 #include "ppapi/thunk/thunk.h"
   9 #include "ppapi/thunk/ppb_video_decoder_api.h"
  10 #include "ppapi/thunk/resource_creation_api.h"
  11
  12 namespace ppapi {
  13 namespace thunk {
  14
  15 namespace {
  16
  17 typedef EnterResource<PPB_VideoDecoder_API> EnterVideoDecoder;
  18
  19 PP_Resource Create(PP_Instance instance,
  20                    PP_Resource graphics_3d,
  21                    PP_VideoDecoder_Profile profile) {
  22   EnterResourceCreation enter(instance);
  23   if (enter.failed())
  24     return 0;
  25   return enter.functions()->CreateVideoDecoder(instance, graphics_3d, profile);
  26 }
  27
  28 PP_Bool IsVideoDecoder(PP_Resource resource) {
  29   EnterVideoDecoder enter(resource, false);
  30   return PP_FromBool(enter.succeeded());
  31 }
  32
  33 int32_t Decode(PP_Resource video_decoder,
  34                const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
  35                PP_CompletionCallback callback) {
  36   EnterVideoDecoder enter(video_decoder, callback, true);
  37   if (enter.failed())
  38     return enter.retval();
  39   return enter.SetResult(enter.object()->Decode(bitstream_buffer,
  40                                                 enter.callback()));
  41 }
  42
  43 void AssignPictureBuffers(PP_Resource video_decoder,
  44                           uint32_t no_of_buffers,
  45                           const PP_PictureBuffer_Dev* buffers) {
  46   EnterVideoDecoder enter(video_decoder, true);
  47   if (enter.succeeded())
  48     enter.object()->AssignPictureBuffers(no_of_buffers, buffers);
  49 }
  50
  51 void ReusePictureBuffer(PP_Resource video_decoder, int32_t picture_buffer_id) {
  52   EnterVideoDecoder enter(video_decoder, true);
  53   if (enter.succeeded())
  54     enter.object()->ReusePictureBuffer(picture_buffer_id);
  55 }
  56
  57 int32_t Flush(PP_Resource video_decoder, PP_CompletionCallback callback) {
  58   EnterVideoDecoder enter(video_decoder, callback, true);
  59   if (enter.failed())
  60     return enter.retval();
  61   return enter.SetResult(enter.object()->Flush(enter.callback()));
  62 }
  63
  64 int32_t Reset(PP_Resource video_decoder,
  65               PP_CompletionCallback callback) {
  66   EnterVideoDecoder enter(video_decoder, callback, true);
  67   if (enter.failed())
  68     return enter.retval();
  69   return enter.SetResult(enter.object()->Reset(enter.callback()));
  70 }
  71
  72 void Destroy(PP_Resource video_decoder) {
  73   EnterVideoDecoder enter(video_decoder, true);
  74   if (enter.succeeded())
  75     enter.object()->Destroy();
  76 }
  77
  78 const PPB_VideoDecoder_Dev g_ppb_videodecoder_thunk = {
  79   &Create,
  80   &IsVideoDecoder,
  81   &Decode,
  82   &AssignPictureBuffers,
  83   &ReusePictureBuffer,
  84   &Flush,
  85   &Reset,
  86   &Destroy
  87 };
  88
  89 }  // namespace
  90
  91 const PPB_VideoDecoder_Dev_0_16* GetPPB_VideoDecoder_Dev_0_16_Thunk() {
  92   return &g_ppb_videodecoder_thunk;
  93 }
  94
  95 }  // namespace thunk
  96 }  // namespace ppapi