xbmc/cores/FFmpeg.h

   1 /*
   2  *  Copyright (C) 2005-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #pragma once
  10
  11 #include "ServiceBroker.h"
  12 #include "utils/CPUInfo.h"
  13 #include "utils/StringUtils.h"
  14
  15 extern "C" {
  16 #include <libavcodec/avcodec.h>
  17 #include <libavformat/avformat.h>
  18 #include <libavutil/avutil.h>
  19 #include <libavutil/log.h>
  20 #include <libavutil/ffversion.h>
  21 #include <libavfilter/avfilter.h>
  22 #include <libpostproc/postprocess.h>
  23 }
  24
  25 #include <tuple>
  26
  27 namespace FFMPEG_HELP_TOOLS
  28 {
  29
  30 struct FFMpegException : public std::exception
  31 {
  32   std::string s;
  33   template<typename... Args>
  34   FFMpegException(const std::string& fmt, Args&&... args)
  35     : s(StringUtils::Format(fmt, std::forward<Args>(args)...))
  36   {
  37   }
  38   const char* what() const noexcept override { return s.c_str(); }
  39 };
  40
  41 std::string FFMpegErrorToString(int err);
  42
  43 } // namespace FFMPEG_HELP_TOOLS
  44
  45 inline int PPCPUFlags()
  46 {
  47   unsigned int cpuFeatures = CServiceBroker::GetCPUInfo()->GetCPUFeatures();
  48   int flags = 0;
  49
  50   if (cpuFeatures & CPU_FEATURE_MMX)
  51     flags |= PP_CPU_CAPS_MMX;
  52   if (cpuFeatures & CPU_FEATURE_MMX2)
  53     flags |= PP_CPU_CAPS_MMX2;
  54   if (cpuFeatures & CPU_FEATURE_3DNOW)
  55     flags |= PP_CPU_CAPS_3DNOW;
  56   if (cpuFeatures & CPU_FEATURE_ALTIVEC)
  57     flags |= PP_CPU_CAPS_ALTIVEC;
  58
  59   return flags;
  60 }
  61
  62 // callback used for logging
  63 void ff_avutil_log(void* ptr, int level, const char* format, va_list va);
  64 void ff_flush_avutil_log_buffers(void);
  65
  66 class CFFmpegLog
  67 {
  68 public:
  69   static void SetLogLevel(int level);
  70   static int GetLogLevel();
  71   static void ClearLogLevel();
  72   int level;
  73 };
  74
  75 class FFmpegExtraData
  76 {
  77 public:
  78   FFmpegExtraData() = default;
  79   explicit FFmpegExtraData(size_t size);
  80   FFmpegExtraData(const uint8_t* data, size_t size);
  81   FFmpegExtraData(const FFmpegExtraData& other);
  82   FFmpegExtraData(FFmpegExtraData&& other) noexcept;
  83
  84   ~FFmpegExtraData();
  85
  86   FFmpegExtraData& operator=(const FFmpegExtraData& other);
  87   FFmpegExtraData& operator=(FFmpegExtraData&& other) noexcept;
  88
  89   bool operator==(const FFmpegExtraData& other) const;
  90   bool operator!=(const FFmpegExtraData& other) const;
  91
  92   operator bool() const { return m_data != nullptr && m_size != 0; }
  93   uint8_t* GetData() { return m_data; }
  94   const uint8_t* GetData() const { return m_data; }
  95   size_t GetSize() const { return m_size; }
  96   /*!
  97    * \brief Take ownership over the extra data buffer
  98    *
  99    * It's in the responsibility of the caller to free the buffer with av_free. After the call
 100    * FFmpegExtraData is empty.
 101    *
 102    * \return The extra data buffer or nullptr if FFmpegExtraData is empty.
 103    */
 104   uint8_t* TakeData();
 105
 106 private:
 107   uint8_t* m_data{nullptr};
 108   size_t m_size{};
 109 };
 110
 111 FFmpegExtraData GetPacketExtradata(const AVPacket* pkt, const AVCodecParameters* codecPar);