Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #include "webrtc/video_frame.h"
      12             : 
      13             : #include <string.h>
      14             : 
      15             : #include <algorithm>  // swap
      16             : 
      17             : #include "webrtc/base/bind.h"
      18             : #include "webrtc/base/checks.h"
      19             : 
      20             : namespace webrtc {
      21             : 
      22             : // FFmpeg's decoder, used by H264DecoderImpl, requires up to 8 bytes padding due
      23             : // to optimized bitstream readers. See avcodec_decode_video2.
      24             : const size_t EncodedImage::kBufferPaddingBytesH264 = 8;
      25             : 
      26           0 : size_t EncodedImage::GetBufferPaddingBytes(VideoCodecType codec_type) {
      27           0 :   switch (codec_type) {
      28             :     case kVideoCodecVP8:
      29             :     case kVideoCodecVP9:
      30           0 :       return 0;
      31             :     case kVideoCodecH264:
      32           0 :       return kBufferPaddingBytesH264;
      33             :     case kVideoCodecI420:
      34             :     case kVideoCodecRED:
      35             :     case kVideoCodecULPFEC:
      36             :     case kVideoCodecFlexfec:
      37             :     case kVideoCodecGeneric:
      38             :     case kVideoCodecUnknown:
      39           0 :       return 0;
      40             :   }
      41           0 :   RTC_NOTREACHED();
      42           0 :   return 0;
      43             : }
      44             : 
      45             : }  // namespace webrtc