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Diffstat (limited to 'media/libvpx/libvpx/test/ivf_video_source.h')
-rw-r--r-- | media/libvpx/libvpx/test/ivf_video_source.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/test/ivf_video_source.h b/media/libvpx/libvpx/test/ivf_video_source.h new file mode 100644 index 0000000000..3ccac62b51 --- /dev/null +++ b/media/libvpx/libvpx/test/ivf_video_source.h @@ -0,0 +1,106 @@ +/* + * 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_IVF_VIDEO_SOURCE_H_ +#define VPX_TEST_IVF_VIDEO_SOURCE_H_ +#include <cstdio> +#include <cstdlib> +#include <new> +#include <string> +#include "test/video_source.h" + +namespace libvpx_test { +const unsigned int kCodeBufferSize = 256 * 1024 * 1024; +const unsigned int kIvfFileHdrSize = 32; +const unsigned int kIvfFrameHdrSize = 12; + +static unsigned int MemGetLe32(const uint8_t *mem) { + return (mem[3] << 24) | (mem[2] << 16) | (mem[1] << 8) | (mem[0]); +} + +// This class extends VideoSource to allow parsing of ivf files, +// so that we can do actual file decodes. +class IVFVideoSource : public CompressedVideoSource { + public: + explicit IVFVideoSource(const std::string &file_name) + : file_name_(file_name), input_file_(nullptr), + compressed_frame_buf_(nullptr), frame_sz_(0), frame_(0), + end_of_file_(false) {} + + ~IVFVideoSource() override { + delete[] compressed_frame_buf_; + + if (input_file_) fclose(input_file_); + } + + void Init() override { + // Allocate a buffer for read in the compressed video frame. + compressed_frame_buf_ = new uint8_t[libvpx_test::kCodeBufferSize]; + ASSERT_NE(compressed_frame_buf_, nullptr) << "Allocate frame buffer failed"; + } + + void Begin() override { + input_file_ = OpenTestDataFile(file_name_); + ASSERT_NE(input_file_, nullptr) + << "Input file open failed. Filename: " << file_name_; + + // Read file header + uint8_t file_hdr[kIvfFileHdrSize]; + ASSERT_EQ(kIvfFileHdrSize, fread(file_hdr, 1, kIvfFileHdrSize, input_file_)) + << "File header read failed."; + // Check file header + ASSERT_TRUE(file_hdr[0] == 'D' && file_hdr[1] == 'K' && + file_hdr[2] == 'I' && file_hdr[3] == 'F') + << "Input is not an IVF file."; + + FillFrame(); + } + + void Next() override { + ++frame_; + FillFrame(); + } + + void FillFrame() { + ASSERT_NE(input_file_, nullptr); + uint8_t frame_hdr[kIvfFrameHdrSize]; + // Check frame header and read a frame from input_file. + if (fread(frame_hdr, 1, kIvfFrameHdrSize, input_file_) != + kIvfFrameHdrSize) { + end_of_file_ = true; + } else { + end_of_file_ = false; + + frame_sz_ = MemGetLe32(frame_hdr); + ASSERT_LE(frame_sz_, kCodeBufferSize) + << "Frame is too big for allocated code buffer"; + ASSERT_EQ(frame_sz_, + fread(compressed_frame_buf_, 1, frame_sz_, input_file_)) + << "Failed to read complete frame"; + } + } + + const uint8_t *cxdata() const override { + return end_of_file_ ? nullptr : compressed_frame_buf_; + } + size_t frame_size() const override { return frame_sz_; } + unsigned int frame_number() const override { return frame_; } + + protected: + std::string file_name_; + FILE *input_file_; + uint8_t *compressed_frame_buf_; + size_t frame_sz_; + unsigned int frame_; + bool end_of_file_; +}; + +} // namespace libvpx_test + +#endif // VPX_TEST_IVF_VIDEO_SOURCE_H_ |