ref: a58265f7953ed7ce4c740761d56f320927436403
dir: /test/webm_video_source.h/
/* * Copyright (c) 2012 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #ifndef VPX_TEST_WEBM_VIDEO_SOURCE_H_ #define VPX_TEST_WEBM_VIDEO_SOURCE_H_ #include <cstdarg> #include <cstdio> #include <cstdlib> #include <new> #include <string> #include "../tools_common.h" #include "../webmdec.h" #include "test/video_source.h" namespace libvpx_test { // This class extends VideoSource to allow parsing of WebM files, // so that we can do actual file decodes. class WebMVideoSource : public CompressedVideoSource { public: explicit WebMVideoSource(const std::string &file_name) : file_name_(file_name), vpx_ctx_(new VpxInputContext()), webm_ctx_(new WebmInputContext()), buf_(NULL), buf_sz_(0), frame_(0), end_of_file_(false) {} virtual ~WebMVideoSource() { if (vpx_ctx_->file != NULL) fclose(vpx_ctx_->file); webm_free(webm_ctx_); delete vpx_ctx_; delete webm_ctx_; } virtual void Init() {} virtual void Begin() { vpx_ctx_->file = OpenTestDataFile(file_name_); ASSERT_TRUE(vpx_ctx_->file != NULL) << "Input file open failed. Filename: " << file_name_; ASSERT_EQ(file_is_webm(webm_ctx_, vpx_ctx_), 1) << "file is not WebM"; FillFrame(); } virtual void Next() { ++frame_; FillFrame(); } void FillFrame() { ASSERT_TRUE(vpx_ctx_->file != NULL); const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_); ASSERT_GE(status, 0) << "webm_read_frame failed"; if (status == 1) { end_of_file_ = true; } } void SeekToNextKeyFrame() { ASSERT_TRUE(vpx_ctx_->file != NULL); do { const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_); ASSERT_GE(status, 0) << "webm_read_frame failed"; ++frame_; if (status == 1) { end_of_file_ = true; } } while (!webm_ctx_->is_key_frame && !end_of_file_); } virtual const uint8_t *cxdata() const { return end_of_file_ ? NULL : buf_; } virtual size_t frame_size() const { return buf_sz_; } virtual unsigned int frame_number() const { return frame_; } protected: std::string file_name_; VpxInputContext *vpx_ctx_; WebmInputContext *webm_ctx_; uint8_t *buf_; size_t buf_sz_; unsigned int frame_; bool end_of_file_; }; } // namespace libvpx_test #endif // VPX_TEST_WEBM_VIDEO_SOURCE_H_