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