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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_GPU_V4L2_V4L2_DECODE_SURFACE_HANDLER_H_
#define MEDIA_GPU_V4L2_V4L2_DECODE_SURFACE_HANDLER_H_
#include <linux/videodev2.h>
#include "media/gpu/v4l2/decode_surface_handler.h"
#include "media/gpu/v4l2/v4l2_decode_surface.h"
namespace media {
class V4L2DecodeSurfaceHandler
: public DecodeSurfaceHandler<V4L2DecodeSurface> {
public:
V4L2DecodeSurfaceHandler() = default;
V4L2DecodeSurfaceHandler(const V4L2DecodeSurfaceHandler&) = delete;
V4L2DecodeSurfaceHandler& operator=(const V4L2DecodeSurfaceHandler&) = delete;
~V4L2DecodeSurfaceHandler() override = default;
// Returns a V4L2DecodeSurface for decoding into, if available, or nullptr.
// This is used for secure playback on V4L2 only. The |secure_handle| should
// be from the corresponding input buffer that will be decoded.
virtual scoped_refptr<V4L2DecodeSurface> CreateSecureSurface(
uint64_t secure_handle) = 0;
// Append slice data in |data| of size |size| to pending hardware
// input buffer with |index|. This buffer will be submitted for decode
// on the next DecodeSurface(). Return true on success.
// It is allowed to pass null for |data| when doing secure playback, and in
// that case only the size is updated and nothing is copied in this call.
virtual bool SubmitSlice(V4L2DecodeSurface* dec_surface,
const uint8_t* data,
size_t size) = 0;
// Decode the surface |dec_surface|.
virtual void DecodeSurface(scoped_refptr<V4L2DecodeSurface> dec_surface) = 0;
// Resumes decoding if stalled due to a kTryAgain state, this only occurs
// with CENCV1 H264 and VP9 superframe encrypted content.
virtual void ResumeDecoding() = 0;
};
} // namespace media
#endif // MEDIA_GPU_V4L2_V4L2_DECODE_SURFACE_HANDLER_H_
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