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/* 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_PPP_VIDEO_DECODER_DEV_H_
#define PPAPI_C_DEV_PPP_VIDEO_DECODER_DEV_H_
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/dev/pp_video_dev.h"
#define PPP_VIDEODECODER_DEV_INTERFACE "PPP_VideoDecoder(Dev);0.6"
// PPP_VideoDecoder_Dev structure contains the function pointers that the
// plugin MUST implement to provide services needed by the video decoder
// implementation.
// See PPB_VideoDecoder_Dev for general usage tips.
struct PPP_VideoDecoder_Dev {
// Callback function to provide buffers for the decoded output pictures. If
// succeeds plugin must provide buffers through AssignPictureBuffers function
// to the API. If |req_num_of_bufs| matching exactly the specification
// given in the parameters cannot be allocated decoder should be destroyed.
//
// Decoding will not proceed until buffers have been provided.
//
// Parameters:
// |instance| the plugin instance to which the callback is responding.
// |req_num_of_bufs| tells how many buffers are needed by the decoder.
// |dimensions| tells the dimensions of the buffer to allocate.
// |type| specifies whether the buffer lives in system memory or GL texture.
void (*ProvidePictureBuffers)(
PP_Instance instance,
uint32_t req_num_of_bufs,
struct PP_Size dimensions);
// Callback function for decoder to deliver unneeded picture buffers back to
// the plugin.
//
// Parameters:
// |instance| the plugin instance to which the callback is responding.
// |picture_buffer| points to the picture buffer that is no longer needed.
void (*DismissPictureBuffer)(PP_Instance instance, int32_t picture_buffer_id);
// Callback function for decoder to deliver decoded pictures ready to be
// displayed. Decoder expects the plugin to return the buffer back to the
// decoder through ReusePictureBuffer function in PPB Video Decoder API.
//
// Parameters:
// |instance| the plugin instance to which the callback is responding.
// |picture| is the picture that is ready.
void (*PictureReady)(PP_Instance instance, struct PP_Picture_Dev picture);
// Callback function to tell the plugin that decoder has decoded end of stream
// marker and output all the pictures that should be displayed from the
// stream.
//
// Parameters:
// |instance| the plugin instance to which the callback is responding.
void (*EndOfStream)(PP_Instance instance);
// Error handler callback for decoder to deliver information about detected
// errors to the plugin.
//
// TODO(vmr): Fill out error result codes and corresponding actions.
//
// Parameters:
// |instance| the plugin instance to which the callback is responding.
// |error| error is the enumeration specifying the error.
void (*NotifyError)(PP_Instance instance, enum PP_VideoDecodeError_Dev error);
};
#endif /* PPAPI_C_DEV_PPP_VIDEO_DECODER_DEV_H_ */
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