The Tor Browser: content/media/fmp4/demuxer/video_decoder

content/media/fmp4/demuxer/video_decoder_config.h@a63d609f5ebe (annotated)

content/media/fmp4/demuxer/video_decoder_config.h

Thu, 15 Jan 2015 15:55:04 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:55:04 +0100
branch: TOR_BUG_9701
changeset 9: a63d609f5ebe
permissions: -rw-r--r--

Back out 97036ab72558 which inappropriately compared turds to third parties.

 // 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 "mp4_demuxer/basictypes.h"
 namespace mp4_demuxer {
 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,
 };
 // Surface formats roughly based on FOURCC labels, see:
 // http://www.fourcc.org/rgb.php
 // http://www.fourcc.org/yuv.php
 enum VideoFrameFormat { // VideoFrame::Format
   INVALID = 0,  // Invalid format value.  Used for error reporting.
   RGB32 = 4,  // 32bpp RGB packed with extra byte 8:8:8
   YV12 = 6,  // 12bpp YVU planar 1x1 Y, 2x2 VU samples
   YV16 = 7,  // 16bpp YVU planar 1x1 Y, 2x1 VU samples
   EMPTY = 9,  // An empty frame.
   I420 = 11,  // 12bpp YVU planar 1x1 Y, 2x2 UV samples.
   NATIVE_TEXTURE = 12,  // Native texture.  Pixel-format agnostic.
 #if defined(GOOGLE_TV)
   HOLE = 13,  // Hole frame.
 #endif
   YV12A = 14,  // 20bpp YUVA planar 1x1 Y, 2x2 VU, 1x1 A samples.
 };
 class 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,
                      VideoFrameFormat format,
                      const IntSize& coded_size,
                      const IntRect& visible_rect,
                      const IntSize& natural_size,
                      const uint8_t* extra_data, size_t extra_data_size,
                      bool is_encrypted);
   ~VideoDecoderConfig();
   // Resets the internal state of this object.
   void Initialize(VideoCodec codec,
                   VideoCodecProfile profile,
                   VideoFrameFormat format,
                   const IntSize& coded_size,
                   const IntRect& visible_rect,
                   const IntSize& natural_size,
                   const uint8_t* 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.
   VideoFrameFormat format() const;
   // Width and height of video frame immediately post-decode. Not all pixels
   // in this region are valid.
   IntSize coded_size() const;
   // Region of |coded_size_| that is visible.
   IntRect visible_rect() const;
   // Final visible width and height of a video frame with aspect ratio taken
   // into account.
   IntSize natural_size() const;
   // Optional byte data required to initialize video decoders, such as H.264
   // AAVC data.
   const uint8_t* 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_;
   VideoFrameFormat format_;
   IntSize coded_size_;
   IntRect visible_rect_;
   IntSize natural_size_;
   std::vector<uint8_t> 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 mp4_demuxer
 #endif  // MEDIA_BASE_VIDEO_DECODER_CONFIG_H_

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content/media/fmp4/demuxer/video_decoder_config.h@a63d609f5ebe (annotated)

content/media/fmp4/demuxer/video_decoder_config.h