1/* 2 * Copyright (c) 2012 The WebM 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#ifndef TEST_IVF_VIDEO_SOURCE_H_ 11#define TEST_IVF_VIDEO_SOURCE_H_ 12#include <cstdio> 13#include <cstdlib> 14#include <new> 15#include <string> 16#include "test/video_source.h" 17 18namespace libvpx_test { 19const unsigned int kCodeBufferSize = 256 * 1024; 20const unsigned int kIvfFileHdrSize = 32; 21const unsigned int kIvfFrameHdrSize = 12; 22 23static unsigned int MemGetLe32(const uint8_t *mem) { 24 return (mem[3] << 24) | (mem[2] << 16) | (mem[1] << 8) | (mem[0]); 25} 26 27// This class extends VideoSource to allow parsing of ivf files, 28// so that we can do actual file decodes. 29class IVFVideoSource : public CompressedVideoSource { 30 public: 31 explicit IVFVideoSource(const std::string &file_name) 32 : file_name_(file_name), 33 input_file_(NULL), 34 compressed_frame_buf_(NULL), 35 frame_sz_(0), 36 frame_(0), 37 end_of_file_(false) { 38 } 39 40 virtual ~IVFVideoSource() { 41 delete[] compressed_frame_buf_; 42 43 if (input_file_) 44 fclose(input_file_); 45 } 46 47 virtual void Init() { 48 // Allocate a buffer for read in the compressed video frame. 49 compressed_frame_buf_ = new uint8_t[libvpx_test::kCodeBufferSize]; 50 ASSERT_TRUE(compressed_frame_buf_ != NULL) 51 << "Allocate frame buffer failed"; 52 } 53 54 virtual void Begin() { 55 input_file_ = OpenTestDataFile(file_name_); 56 ASSERT_TRUE(input_file_ != NULL) << "Input file open failed. Filename: " 57 << file_name_; 58 59 // Read file header 60 uint8_t file_hdr[kIvfFileHdrSize]; 61 ASSERT_EQ(kIvfFileHdrSize, fread(file_hdr, 1, kIvfFileHdrSize, input_file_)) 62 << "File header read failed."; 63 // Check file header 64 ASSERT_TRUE(file_hdr[0] == 'D' && file_hdr[1] == 'K' && file_hdr[2] == 'I' 65 && file_hdr[3] == 'F') << "Input is not an IVF file."; 66 67 FillFrame(); 68 } 69 70 virtual void Next() { 71 ++frame_; 72 FillFrame(); 73 } 74 75 void FillFrame() { 76 ASSERT_TRUE(input_file_ != NULL); 77 uint8_t frame_hdr[kIvfFrameHdrSize]; 78 // Check frame header and read a frame from input_file. 79 if (fread(frame_hdr, 1, kIvfFrameHdrSize, input_file_) 80 != kIvfFrameHdrSize) { 81 end_of_file_ = true; 82 } else { 83 end_of_file_ = false; 84 85 frame_sz_ = MemGetLe32(frame_hdr); 86 ASSERT_LE(frame_sz_, kCodeBufferSize) 87 << "Frame is too big for allocated code buffer"; 88 ASSERT_EQ(frame_sz_, 89 fread(compressed_frame_buf_, 1, frame_sz_, input_file_)) 90 << "Failed to read complete frame"; 91 } 92 } 93 94 virtual const uint8_t *cxdata() const { 95 return end_of_file_ ? NULL : compressed_frame_buf_; 96 } 97 virtual size_t frame_size() const { return frame_sz_; } 98 virtual unsigned int frame_number() const { return frame_; } 99 100 protected: 101 std::string file_name_; 102 FILE *input_file_; 103 uint8_t *compressed_frame_buf_; 104 size_t frame_sz_; 105 unsigned int frame_; 106 bool end_of_file_; 107}; 108 109} // namespace libvpx_test 110 111#endif // TEST_IVF_VIDEO_SOURCE_H_ 112