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Diffstat (limited to 'chromium/media/video/video_encode_accelerator.h')
| -rw-r--r-- | chromium/media/video/video_encode_accelerator.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/chromium/media/video/video_encode_accelerator.h b/chromium/media/video/video_encode_accelerator.h deleted file mode 100644 index 8d4f56536bf..00000000000 --- a/chromium/media/video/video_encode_accelerator.h +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright 2013 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 MEDIA_VIDEO_VIDEO_ENCODE_ACCELERATOR_H_ -#define MEDIA_VIDEO_VIDEO_ENCODE_ACCELERATOR_H_ - -#include <vector> - -#include "base/basictypes.h" -#include "base/memory/ref_counted.h" -#include "media/base/bitstream_buffer.h" -#include "media/base/media_export.h" -#include "media/base/video_decoder_config.h" -#include "media/base/video_frame.h" - -namespace media { - -class BitstreamBuffer; -class VideoFrame; - -// Video encoder interface. -class MEDIA_EXPORT VideoEncodeAccelerator { - public: - virtual ~VideoEncodeAccelerator(); - - // Specification of an encoding profile supported by an encoder. - struct SupportedProfile { - VideoCodecProfile profile; - gfx::Size max_resolution; - struct { - uint32 numerator; - uint32 denominator; - } max_framerate; - }; - - // Enumeration of potential errors generated by the API. - enum Error { - // An operation was attempted during an incompatible encoder state. - kIllegalStateError, - // Invalid argument was passed to an API method. - kInvalidArgumentError, - // A failure occurred at the GPU process or one of its dependencies. - // Examples of such failures include GPU hardware failures, GPU driver - // failures, GPU library failures, GPU process programming errors, and so - // on. - kPlatformFailureError, - }; - - // Interface for clients that use VideoEncodeAccelerator. - class MEDIA_EXPORT Client { - public: - // Callback to notify client that encoder has been successfully initialized. - virtual void NotifyInitializeDone() = 0; - - // Callback to tell the client what size of frames and buffers to provide - // for input and output. The VEA disclaims use or ownership of all - // previously provided buffers once this callback is made. - // Parameters: - // |input_count| is the number of input VideoFrames required for encoding. - // The client should be prepared to feed at least this many frames into the - // encoder before being returned any input frames, since the encoder may - // need to hold onto some subset of inputs as reference pictures. - // |input_coded_size| is the logical size of the input frames (as reported - // by VideoFrame::coded_size()) to encode, in pixels. The encoder may have - // hardware alignment requirements that make this different from - // |input_visible_size|, as requested in Initialize(), in which case the - // input VideoFrame to Encode() should be padded appropriately. - // |output_buffer_size| is the required size of output buffers for this - // encoder in bytes. - virtual void RequireBitstreamBuffers(unsigned int input_count, - const gfx::Size& input_coded_size, - size_t output_buffer_size) = 0; - - // Callback to deliver encoded bitstream buffers. Ownership of the buffer - // is transferred back to the VEA::Client once this callback is made. - // Parameters: - // |bitstream_buffer_id| is the id of the buffer that is ready. - // |payload_size| is the byte size of the used portion of the buffer. - // |key_frame| is true if this delivered frame is a keyframe. - virtual void BitstreamBufferReady(int32 bitstream_buffer_id, - size_t payload_size, - bool key_frame) = 0; - - // Error notification callback. - virtual void NotifyError(Error error) = 0; - - protected: - // Clients are not owned by VEA instances and should not be deleted through - // these pointers. - virtual ~Client() {} - }; - - // Video encoder functions. - - // Initialize the video encoder with a specific configuration. Called once - // per encoder construction. - // Parameters: - // |input_format| is the frame format of the input stream (as would be - // reported by VideoFrame::format() for frames passed to Encode()). - // |input_visible_size| is the resolution of the input stream (as would be - // reported by VideoFrame::visible_rect().size() for frames passed to - // Encode()). - // |output_profile| is the codec profile of the encoded output stream. - // |initial_bitrate| is the initial bitrate of the encoded output stream, - // in bits per second. - // TODO(sheu): handle resolution changes. http://crbug.com/249944 - virtual void Initialize(media::VideoFrame::Format input_format, - const gfx::Size& input_visible_size, - VideoCodecProfile output_profile, - uint32 initial_bitrate) = 0; - - // Encodes the given frame. - // Parameters: - // |frame| is the VideoFrame that is to be encoded. - // |force_keyframe| forces the encoding of a keyframe for this frame. - virtual void Encode(const scoped_refptr<VideoFrame>& frame, - bool force_keyframe) = 0; - - // Send a bitstream buffer to the encoder to be used for storing future - // encoded output. Each call here with a given |buffer| will cause the buffer - // to be filled once, then returned with BitstreamBufferReady(). - // Parameters: - // |buffer| is the bitstream buffer to use for output. - virtual void UseOutputBitstreamBuffer(const BitstreamBuffer& buffer) = 0; - - // Request a change to the encoding parameters. This is only a request, - // fulfilled on a best-effort basis. - // Parameters: - // |bitrate| is the requested new bitrate, in bits per second. - // |framerate| is the requested new framerate, in frames per second. - virtual void RequestEncodingParametersChange(uint32 bitrate, - uint32 framerate) = 0; - - // Destroys the encoder: all pending inputs and outputs are dropped - // immediately and the component is freed. This call may asynchronously free - // system resources, but its client-visible effects are synchronous. After - // this method returns no more callbacks will be made on the client. Deletes - // |this| unconditionally, so make sure to drop all pointers to it! - virtual void Destroy() = 0; -}; - -} // namespace media - -#endif // MEDIA_VIDEO_VIDEO_ENCODE_ACCELERATOR_H_ |