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// Copyright (c) 2012 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_BASE_VIDEO_DECODER_CONFIG_H_
#define MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "media/base/media_export.h"
#include "media/base/video_frame.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/size.h"
namespace media {
enum VideoCodec {
// These values are histogrammed over time; do not change their ordinal
// values. When deleting a codec replace it with a dummy value; when adding a
// codec, do so at the bottom (and update kVideoCodecMax).
kUnknownVideoCodec = 0,
kCodecH264,
kCodecVC1,
kCodecMPEG2,
kCodecMPEG4,
kCodecTheora,
kCodecVP8,
kCodecVP9,
// DO NOT ADD RANDOM VIDEO CODECS!
//
// The only acceptable time to add a new codec is if there is production code
// that uses said codec in the same CL.
kVideoCodecMax = kCodecVP9 // Must equal the last "real" codec above.
};
// Video stream profile. This *must* match PP_VideoDecoder_Profile.
// (enforced in webkit/plugins/ppapi/ppb_video_decoder_impl.cc)
enum VideoCodecProfile {
// Keep the values in this enum unique, as they imply format (h.264 vs. VP8,
// for example), and keep the values for a particular format grouped
// together for clarity.
VIDEO_CODEC_PROFILE_UNKNOWN = -1,
H264PROFILE_MIN = 0,
H264PROFILE_BASELINE = H264PROFILE_MIN,
H264PROFILE_MAIN = 1,
H264PROFILE_EXTENDED = 2,
H264PROFILE_HIGH = 3,
H264PROFILE_HIGH10PROFILE = 4,
H264PROFILE_HIGH422PROFILE = 5,
H264PROFILE_HIGH444PREDICTIVEPROFILE = 6,
H264PROFILE_SCALABLEBASELINE = 7,
H264PROFILE_SCALABLEHIGH = 8,
H264PROFILE_STEREOHIGH = 9,
H264PROFILE_MULTIVIEWHIGH = 10,
H264PROFILE_MAX = H264PROFILE_MULTIVIEWHIGH,
VP8PROFILE_MIN = 11,
VP8PROFILE_MAIN = VP8PROFILE_MIN,
VP8PROFILE_MAX = VP8PROFILE_MAIN,
VP9PROFILE_MIN = 12,
VP9PROFILE_MAIN = VP9PROFILE_MIN,
VP9PROFILE_MAX = VP9PROFILE_MAIN,
VIDEO_CODEC_PROFILE_MAX = VP9PROFILE_MAX,
};
class MEDIA_EXPORT VideoDecoderConfig {
public:
// Constructs an uninitialized object. Clients should call Initialize() with
// appropriate values before using.
VideoDecoderConfig();
// Constructs an initialized object. It is acceptable to pass in NULL for
// |extra_data|, otherwise the memory is copied.
VideoDecoderConfig(VideoCodec codec,
VideoCodecProfile profile,
VideoFrame::Format format,
const gfx::Size& coded_size,
const gfx::Rect& visible_rect,
const gfx::Size& natural_size,
const uint8* extra_data, size_t extra_data_size,
bool is_encrypted);
~VideoDecoderConfig();
// Resets the internal state of this object.
void Initialize(VideoCodec codec,
VideoCodecProfile profile,
VideoFrame::Format format,
const gfx::Size& coded_size,
const gfx::Rect& visible_rect,
const gfx::Size& natural_size,
const uint8* extra_data, size_t extra_data_size,
bool is_encrypted,
bool record_stats);
// Returns true if this object has appropriate configuration values, false
// otherwise.
bool IsValidConfig() const;
// Returns true if all fields in |config| match this config.
// Note: The contents of |extra_data_| are compared not the raw pointers.
bool Matches(const VideoDecoderConfig& config) const;
// Returns a human-readable string describing |*this|. For debugging & test
// output only.
std::string AsHumanReadableString() const;
VideoCodec codec() const;
VideoCodecProfile profile() const;
// Video format used to determine YUV buffer sizes.
VideoFrame::Format format() const;
// Width and height of video frame immediately post-decode. Not all pixels
// in this region are valid.
gfx::Size coded_size() const;
// Region of |coded_size_| that is visible.
gfx::Rect visible_rect() const;
// Final visible width and height of a video frame with aspect ratio taken
// into account.
gfx::Size natural_size() const;
// Optional byte data required to initialize video decoders, such as H.264
// AAVC data.
const uint8* extra_data() const;
size_t extra_data_size() const;
// Whether the video stream is potentially encrypted.
// Note that in a potentially encrypted video stream, individual buffers
// can be encrypted or not encrypted.
bool is_encrypted() const;
private:
VideoCodec codec_;
VideoCodecProfile profile_;
VideoFrame::Format format_;
gfx::Size coded_size_;
gfx::Rect visible_rect_;
gfx::Size natural_size_;
std::vector<uint8> extra_data_;
bool is_encrypted_;
// Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler
// generated copy constructor and assignment operator. Since the extra data is
// typically small, the performance impact is minimal.
};
} // namespace media
#endif // MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
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