pepper: add software vp9 encoder support to PPB_VideoEncoder

native_client_sdk/src/examples/api/video_encode/video_encode.cc

 // Copyright 2015 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.
 
 #include <math.h>
 #include <stdio.h>
 #include <string.h>
 
 #include <algorithm>
 #include <deque>
@@ skipping 33 matching lines @@
 #define fourcc(a, b, c, d)                                               \
   (((uint32_t)(a) << 0) | ((uint32_t)(b) << 8) | ((uint32_t)(c) << 16) | \
    ((uint32_t)(d) << 24))
 
 namespace {
 
 double clamp(double min, double max, double value) {
   return std::max(std::min(value, max), min);
 }
 
+std::string ToUpperString(const std::string& str) {
+  std::string ret;
+  for (uint32_t i = 0; i < str.size(); i++)
+    ret.push_back(static_cast<char>(toupper(str[i])));
+  return ret;
+}
+
 // IVF container writer. It is possible to parse H264 bitstream using
 // NAL units but for VP8 we need a container to at least find encoded
 // pictures as well as the picture sizes.
 class IVFWriter {
  public:
   IVFWriter() {}
   ~IVFWriter() {}
 
   uint32_t GetFileHeaderSize() const { return 32; }
   uint32_t GetFrameHeaderSize() const { return 12; }
-  uint32_t WriteFileHeader(uint8_t* mem, int32_t width, int32_t height);
+  uint32_t WriteFileHeader(uint8_t* mem,
+                           const std::string& codec,
+                           int32_t width,
+                           int32_t height);
   uint32_t WriteFrameHeader(uint8_t* mem, uint64_t pts, size_t frame_size);
 
  private:
   void PutLE16(uint8_t* mem, int val) const {
     mem[0] = (val >> 0) & 0xff;
     mem[1] = (val >> 8) & 0xff;
   }
   void PutLE32(uint8_t* mem, int val) const {
     mem[0] = (val >> 0) & 0xff;
     mem[1] = (val >> 8) & 0xff;
     mem[2] = (val >> 16) & 0xff;
     mem[3] = (val >> 24) & 0xff;
   }
 };
 
 uint32_t IVFWriter::WriteFileHeader(uint8_t* mem,
+                                    const std::string& codec,
                                     int32_t width,
                                     int32_t height) {
   mem[0] = 'D';
   mem[1] = 'K';
   mem[2] = 'I';
   mem[3] = 'F';
   PutLE16(mem + 4, 0);                               // version
   PutLE16(mem + 6, 32);                              // header size
-  PutLE32(mem + 8, fourcc('V', 'P', '8', '0'));      // fourcc
+  PutLE32(mem + 8, fourcc(codec[0], codec[1], codec[2], '0'));  // fourcc
   PutLE16(mem + 12, static_cast<uint16_t>(width));   // width
   PutLE16(mem + 14, static_cast<uint16_t>(height));  // height
   PutLE32(mem + 16, 1000);                           // rate
   PutLE32(mem + 20, 1);                              // scale
   PutLE32(mem + 24, 0xffffffff);                     // length
   PutLE32(mem + 28, 0);                              // unused
 
   return 32;
 }
 
@@ skipping 445 matching lines @@
   uint32_t data_offset = 0;
   if (video_profile_ == PP_VIDEOPROFILE_VP8_ANY ||
       video_profile_ == PP_VIDEOPROFILE_VP9_ANY) {
     uint32_t frame_offset = 0;
     if (encoded_frames_ == 1) {
       array_buffer = pp::VarArrayBuffer(
           size + ivf_writer_.GetFileHeaderSize() +
           ivf_writer_.GetFrameHeaderSize());
       data_ptr = static_cast<uint8_t*>(array_buffer.Map());
       frame_offset = ivf_writer_.WriteFileHeader(
-          data_ptr, frame_size_.width(), frame_size_.height());
+          data_ptr, ToUpperString(VideoProfileToString(video_profile_)),
+          frame_size_.width(), frame_size_.height());
     } else {
       array_buffer = pp::VarArrayBuffer(
           size + ivf_writer_.GetFrameHeaderSize());
       data_ptr = static_cast<uint8_t*>(array_buffer.Map());
     }
     uint64_t timestamp = frames_timestamps_.front();
     frames_timestamps_.pop_front();
     data_offset =
         frame_offset +
         ivf_writer_.WriteFrameHeader(data_ptr + frame_offset, timestamp, size);
@@ skipping 31 matching lines @@
 }
 
 }  // anonymous namespace
 
 namespace pp {
 // Factory function for your specialization of the Module object.
 Module* CreateModule() {
   return new VideoEncoderModule();
 }
 }  // namespace pp