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 VPX_TEST_WEBM_VIDEO_SOURCE_H_ 11 #define VPX_TEST_WEBM_VIDEO_SOURCE_H_ 12 #include <cstdarg> 13 #include <cstdio> 14 #include <cstdlib> 15 #include <new> 16 #include <string> 17 #include "../tools_common.h" 18 #include "../webmdec.h" 19 #include "test/video_source.h" 20 21 namespace libvpx_test { 22 23 // This class extends VideoSource to allow parsing of WebM files, 24 // so that we can do actual file decodes. 25 class WebMVideoSource : public CompressedVideoSource { 26 public: WebMVideoSource(const std::string & file_name)27 explicit WebMVideoSource(const std::string &file_name) 28 : file_name_(file_name), vpx_ctx_(new VpxInputContext()), 29 webm_ctx_(new WebmInputContext()), buf_(nullptr), buf_sz_(0), frame_(0), 30 end_of_file_(false) {} 31 ~WebMVideoSource()32 virtual ~WebMVideoSource() { 33 if (vpx_ctx_->file != nullptr) fclose(vpx_ctx_->file); 34 webm_free(webm_ctx_); 35 delete vpx_ctx_; 36 delete webm_ctx_; 37 } 38 Init()39 virtual void Init() {} 40 Begin()41 virtual void Begin() { 42 vpx_ctx_->file = OpenTestDataFile(file_name_); 43 ASSERT_NE(vpx_ctx_->file, nullptr) 44 << "Input file open failed. Filename: " << file_name_; 45 46 ASSERT_EQ(file_is_webm(webm_ctx_, vpx_ctx_), 1) << "file is not WebM"; 47 48 FillFrame(); 49 } 50 Next()51 virtual void Next() { 52 ++frame_; 53 FillFrame(); 54 } 55 FillFrame()56 void FillFrame() { 57 ASSERT_NE(vpx_ctx_->file, nullptr); 58 const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_); 59 ASSERT_GE(status, 0) << "webm_read_frame failed"; 60 if (status == 1) { 61 end_of_file_ = true; 62 } 63 } 64 SeekToNextKeyFrame()65 void SeekToNextKeyFrame() { 66 ASSERT_NE(vpx_ctx_->file, nullptr); 67 do { 68 const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_); 69 ASSERT_GE(status, 0) << "webm_read_frame failed"; 70 ++frame_; 71 if (status == 1) { 72 end_of_file_ = true; 73 } 74 } while (!webm_ctx_->is_key_frame && !end_of_file_); 75 } 76 cxdata()77 virtual const uint8_t *cxdata() const { 78 return end_of_file_ ? nullptr : buf_; 79 } frame_size()80 virtual size_t frame_size() const { return buf_sz_; } frame_number()81 virtual unsigned int frame_number() const { return frame_; } 82 83 protected: 84 std::string file_name_; 85 VpxInputContext *vpx_ctx_; 86 WebmInputContext *webm_ctx_; 87 uint8_t *buf_; 88 size_t buf_sz_; 89 unsigned int frame_; 90 bool end_of_file_; 91 }; 92 93 } // namespace libvpx_test 94 95 #endif // VPX_TEST_WEBM_VIDEO_SOURCE_H_ 96