michael@0: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #ifndef MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
michael@0: #define MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
michael@0: 
michael@0: #include <string>
michael@0: #include <vector>
michael@0: 
michael@0: #include "mp4_demuxer/basictypes.h"
michael@0: 
michael@0: namespace mp4_demuxer {
michael@0: 
michael@0: enum VideoCodec {
michael@0:   // These values are histogrammed over time; do not change their ordinal
michael@0:   // values.  When deleting a codec replace it with a dummy value; when adding a
michael@0:   // codec, do so at the bottom (and update kVideoCodecMax).
michael@0:   kUnknownVideoCodec = 0,
michael@0:   kCodecH264,
michael@0:   kCodecVC1,
michael@0:   kCodecMPEG2,
michael@0:   kCodecMPEG4,
michael@0:   kCodecTheora,
michael@0:   kCodecVP8,
michael@0:   kCodecVP9,
michael@0:   // DO NOT ADD RANDOM VIDEO CODECS!
michael@0:   //
michael@0:   // The only acceptable time to add a new codec is if there is production code
michael@0:   // that uses said codec in the same CL.
michael@0: 
michael@0:   kVideoCodecMax = kCodecVP9  // Must equal the last "real" codec above.
michael@0: };
michael@0: 
michael@0: // Video stream profile.  This *must* match PP_VideoDecoder_Profile.
michael@0: // (enforced in webkit/plugins/ppapi/ppb_video_decoder_impl.cc)
michael@0: enum VideoCodecProfile {
michael@0:   // Keep the values in this enum unique, as they imply format (h.264 vs. VP8,
michael@0:   // for example), and keep the values for a particular format grouped
michael@0:   // together for clarity.
michael@0:   VIDEO_CODEC_PROFILE_UNKNOWN = -1,
michael@0:   H264PROFILE_MIN = 0,
michael@0:   H264PROFILE_BASELINE = H264PROFILE_MIN,
michael@0:   H264PROFILE_MAIN = 1,
michael@0:   H264PROFILE_EXTENDED = 2,
michael@0:   H264PROFILE_HIGH = 3,
michael@0:   H264PROFILE_HIGH10PROFILE = 4,
michael@0:   H264PROFILE_HIGH422PROFILE = 5,
michael@0:   H264PROFILE_HIGH444PREDICTIVEPROFILE = 6,
michael@0:   H264PROFILE_SCALABLEBASELINE = 7,
michael@0:   H264PROFILE_SCALABLEHIGH = 8,
michael@0:   H264PROFILE_STEREOHIGH = 9,
michael@0:   H264PROFILE_MULTIVIEWHIGH = 10,
michael@0:   H264PROFILE_MAX = H264PROFILE_MULTIVIEWHIGH,
michael@0:   VP8PROFILE_MIN = 11,
michael@0:   VP8PROFILE_MAIN = VP8PROFILE_MIN,
michael@0:   VP8PROFILE_MAX = VP8PROFILE_MAIN,
michael@0:   VP9PROFILE_MIN = 12,
michael@0:   VP9PROFILE_MAIN = VP9PROFILE_MIN,
michael@0:   VP9PROFILE_MAX = VP9PROFILE_MAIN,
michael@0:   VIDEO_CODEC_PROFILE_MAX = VP9PROFILE_MAX,
michael@0: };
michael@0: 
michael@0: // Surface formats roughly based on FOURCC labels, see:
michael@0: // http://www.fourcc.org/rgb.php
michael@0: // http://www.fourcc.org/yuv.php
michael@0: enum VideoFrameFormat { // VideoFrame::Format
michael@0:   INVALID = 0,  // Invalid format value.  Used for error reporting.
michael@0:   RGB32 = 4,  // 32bpp RGB packed with extra byte 8:8:8
michael@0:   YV12 = 6,  // 12bpp YVU planar 1x1 Y, 2x2 VU samples
michael@0:   YV16 = 7,  // 16bpp YVU planar 1x1 Y, 2x1 VU samples
michael@0:   EMPTY = 9,  // An empty frame.
michael@0:   I420 = 11,  // 12bpp YVU planar 1x1 Y, 2x2 UV samples.
michael@0:   NATIVE_TEXTURE = 12,  // Native texture.  Pixel-format agnostic.
michael@0: #if defined(GOOGLE_TV)
michael@0:   HOLE = 13,  // Hole frame.
michael@0: #endif
michael@0:   YV12A = 14,  // 20bpp YUVA planar 1x1 Y, 2x2 VU, 1x1 A samples.
michael@0: };
michael@0: 
michael@0: class VideoDecoderConfig {
michael@0:  public:
michael@0:   // Constructs an uninitialized object. Clients should call Initialize() with
michael@0:   // appropriate values before using.
michael@0:   VideoDecoderConfig();
michael@0: 
michael@0:   // Constructs an initialized object. It is acceptable to pass in NULL for
michael@0:   // |extra_data|, otherwise the memory is copied.
michael@0:   VideoDecoderConfig(VideoCodec codec,
michael@0:                      VideoCodecProfile profile,
michael@0:                      VideoFrameFormat format,
michael@0:                      const IntSize& coded_size,
michael@0:                      const IntRect& visible_rect,
michael@0:                      const IntSize& natural_size,
michael@0:                      const uint8_t* extra_data, size_t extra_data_size,
michael@0:                      bool is_encrypted);
michael@0: 
michael@0:   ~VideoDecoderConfig();
michael@0: 
michael@0:   // Resets the internal state of this object.
michael@0:   void Initialize(VideoCodec codec,
michael@0:                   VideoCodecProfile profile,
michael@0:                   VideoFrameFormat format,
michael@0:                   const IntSize& coded_size,
michael@0:                   const IntRect& visible_rect,
michael@0:                   const IntSize& natural_size,
michael@0:                   const uint8_t* extra_data, size_t extra_data_size,
michael@0:                   bool is_encrypted,
michael@0:                   bool record_stats);
michael@0: 
michael@0:   // Returns true if this object has appropriate configuration values, false
michael@0:   // otherwise.
michael@0:   bool IsValidConfig() const;
michael@0: 
michael@0:   // Returns true if all fields in |config| match this config.
michael@0:   // Note: The contents of |extra_data_| are compared not the raw pointers.
michael@0:   bool Matches(const VideoDecoderConfig& config) const;
michael@0: 
michael@0:   // Returns a human-readable string describing |*this|.  For debugging & test
michael@0:   // output only.
michael@0:   std::string AsHumanReadableString() const;
michael@0: 
michael@0:   VideoCodec codec() const;
michael@0:   VideoCodecProfile profile() const;
michael@0: 
michael@0:   // Video format used to determine YUV buffer sizes.
michael@0:   VideoFrameFormat format() const;
michael@0: 
michael@0:   // Width and height of video frame immediately post-decode. Not all pixels
michael@0:   // in this region are valid.
michael@0:   IntSize coded_size() const;
michael@0: 
michael@0:   // Region of |coded_size_| that is visible.
michael@0:   IntRect visible_rect() const;
michael@0: 
michael@0:   // Final visible width and height of a video frame with aspect ratio taken
michael@0:   // into account.
michael@0:   IntSize natural_size() const;
michael@0: 
michael@0:   // Optional byte data required to initialize video decoders, such as H.264
michael@0:   // AAVC data.
michael@0:   const uint8_t* extra_data() const;
michael@0:   size_t extra_data_size() const;
michael@0: 
michael@0:   // Whether the video stream is potentially encrypted.
michael@0:   // Note that in a potentially encrypted video stream, individual buffers
michael@0:   // can be encrypted or not encrypted.
michael@0:   bool is_encrypted() const;
michael@0: 
michael@0:  private:
michael@0:   VideoCodec codec_;
michael@0:   VideoCodecProfile profile_;
michael@0: 
michael@0:   VideoFrameFormat format_;
michael@0: 
michael@0:   IntSize coded_size_;
michael@0:   IntRect visible_rect_;
michael@0:   IntSize natural_size_;
michael@0: 
michael@0:   std::vector<uint8_t> extra_data_;
michael@0: 
michael@0:   bool is_encrypted_;
michael@0: 
michael@0:   // Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler
michael@0:   // generated copy constructor and assignment operator. Since the extra data is
michael@0:   // typically small, the performance impact is minimal.
michael@0: };
michael@0: 
michael@0: }  // namespace mp4_demuxer
michael@0: 
michael@0: #endif  // MEDIA_BASE_VIDEO_DECODER_CONFIG_H_