Implementation for Pepper C++ Video Decoder API (wrapper on top of C API).

ppapi/c/dev/ppb_video_decoder_dev.h

 /* Copyright (c) 2011 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_C_DEV_PPB_VIDEO_DECODER_DEV_H_
 #define PPAPI_C_DEV_PPB_VIDEO_DECODER_DEV_H_
 
 #include "ppapi/c/dev/pp_video_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_var.h"
@@ skipping 98 matching lines @@
   // with valid elements to the buffer pointed by |matching_configs|. No more
   // than |config_size| PP_VideoConfig_Devs will be returned even if more would
   // be available for the decoder device.
   //
   // When this function is called with |matching_configs| = NULL, then no
   // configurations are returned, but the total number of PP_VideoConfig_Devs
   // available will be returned in |num_of_matching_configs|.
   //
   // Returns PP_TRUE on success, PP_FALSE otherwise.
   PP_Bool (*GetConfigs)(PP_Instance instance,
-                        PP_VideoConfigElement* proto_config,
+                        const PP_VideoConfigElement* proto_config,
                         PP_VideoConfigElement* matching_configs,
                         uint32_t matching_configs_size,
                         uint32_t* num_of_matching_configs);
 
   // Creates a video decoder with requested |decoder_config|.
   // |input_format| in |decoder_config| specifies the format of input access
   // unit, with PP_VIDEOKEY_CODECID and PP_VIDEOKEY_PAYLOADFORMAT required.
   // Plugin has the option to specify codec profile/level and other
   // information such as PP_VIDEOKEY_ACCELERATION, to let browser choose
   // the most appropriate decoder.
   //
   // Parameters:
   //   |instance| pointer to the plugin instance.
   //   |dec_config| the configuration which to use to initialize the decoder.
   //   |callback| called after initialize is complete.
   //
   // The created decoder is returned as PP_Resource. NULL means failure.
   PP_Resource (*Create)(PP_Instance instance,
-                        PP_VideoConfigElement* dec_config,
+                        const PP_VideoConfigElement* dec_config,
                         struct PP_CompletionCallback callback);
 
   // Tests whether |resource| is a video decoder created through Create
   // function of this interface.
   //
   // Parameters:
   //   |resource| is handle to resource to test.
   //
   // Returns true if is a video decoder, false otherwise.
   PP_Bool (*IsVideoDecoder)(PP_Resource resource);
 
   // Dispatches bitstream buffer to the decoder. This is asynchronous and
   // non-blocking function.
   //
   // Parameters:
   //   |video_decoder| is the previously created handle to the decoder instance.
   //   |bitstream_buffer| is the bitstream buffer that contains the input data.
   //   |callback| will be called when |bitstream_buffer| has been processed by
   //   the decoder.
   //
   // Returns PP_TRUE on decoder successfully accepting buffer, PP_FALSE
   // otherwise.
   PP_Bool (*Decode)(PP_Resource video_decoder,
-                    struct PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
+                    const struct PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
                     struct PP_CompletionCallback callback);
 
   // Provides the decoder with picture buffers for video decoding.
   // AssignGLESBuffers provides texture-backed buffers, whereas
   // AssignSysmemBuffers provides system memory-backed buffers.
   //
   // This function should be called when decoder has issued the
   // ProvidePictureBuffers callback to the plugin with buffer requirements.
   //
   // It can also be called in advance or outside of ProvidePictureBuffers calls
@@ skipping 11 matching lines @@
   // callback parameters to ProvidePictureBuffers instead of being part of the
   // PPB API.
   //
   // Parameters:
   //   |video_decoder| is the previously created handle to the decoder instance.
   //   |no_of_buffers| how many buffers are behind picture buffer pointer.
   //   |buffers| contains the reference to the picture buffer that was
   //   allocated.
   void (*AssignGLESBuffers)(PP_Resource video_decoder,
                             uint32_t no_of_buffers,
-                            struct PP_GLESBuffer_Dev* buffers);
+                            const struct PP_GLESBuffer_Dev* buffers);
   void (*AssignSysmemBuffers)(PP_Resource video_decoder,
                               uint32_t no_of_buffers,
-                              struct PP_SysmemBuffer_Dev* buffers);
+                              const struct PP_SysmemBuffer_Dev* buffers);
 
   // Tells the decoder to reuse given picture buffer. Typical use of this
   // function is to call from PictureReady callback to recycle picture buffer
   // back to the decoder after blitting the image so that decoder can use the
   // image for output again.
   //
   // The decoder will ignore any picture buffer not previously provided via
   // AssignPictureBuffer.
   //
   // TODO(vmr): figure out how the sync will be handled with command buffer as
@@ skipping 35 matching lines @@
   //   |callback| is one-time callback that will be called once the abortion
   //   request has been completed.
   //
   // Returns PP_TRUE on acceptance of abort request and PP_FALSE if request to
   // abort is rejected by the decoder.
   PP_Bool (*Abort)(PP_Resource video_decoder,
                    struct PP_CompletionCallback callback);
 };
 
 #endif  /* PPAPI_C_DEV_PPB_VIDEO_DECODER_DEV_H_ */