/* Copyright 2012 The Chromium Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**
* This file defines the <code>PPP_VideoDecoder_Dev</code> interface.
*/
label Chrome {
M21 = 0.11
};
/**
* 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.
*/
interface 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.
* |decoder| the PPB_VideoDecoder_Dev resource.
* |req_num_of_bufs| tells how many buffers are needed by the decoder.
* |dimensions| tells the dimensions of the buffer to allocate.
* |texture_target| the type of texture used. Sample targets in use are
* TEXTURE_2D (most platforms) and TEXTURE_EXTERNAL_OES (on ARM).
*/
[version=0.11]
void ProvidePictureBuffers(
[in] PP_Instance instance,
[in] PP_Resource decoder,
[in] uint32_t req_num_of_bufs,
[in] PP_Size dimensions,
[in] uint32_t texture_target);
/**
* Callback function for decoder to deliver unneeded picture buffers back to
* the plugin.
*
* Parameters:
* |instance| the plugin instance to which the callback is responding.
* |decoder| the PPB_VideoDecoder_Dev resource.
* |picture_buffer| points to the picture buffer that is no longer needed.
*/
void DismissPictureBuffer(
[in] PP_Instance instance,
[in] PP_Resource decoder,
[in] 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.
* |decoder| the PPB_VideoDecoder_Dev resource.
* |picture| is the picture that is ready.
*/
void PictureReady(
[in] PP_Instance instance,
[in] PP_Resource decoder,
[in] PP_Picture_Dev picture);
/**
* Error handler callback for decoder to deliver information about detected
* errors to the plugin.
*
* Parameters:
* |instance| the plugin instance to which the callback is responding.
* |decoder| the PPB_VideoDecoder_Dev resource.
* |error| error is the enumeration specifying the error.
*/
void NotifyError(
[in] PP_Instance instance,
[in] PP_Resource decoder,
[in] PP_VideoDecodeError_Dev error);
};
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