106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "media/base/video_stream_info.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/string_util.h"
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#include "base/strings/stringprintf.h"
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#include "media/base/limits.h"
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namespace media {
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namespace {
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std::string VideoCodecToString(VideoCodec video_codec) {
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switch (video_codec) {
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case kCodecH264:
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return "H264";
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case kCodecVC1:
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return "VC1";
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case kCodecMPEG2:
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return "MPEG2";
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case kCodecMPEG4:
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return "MPEG4";
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case kCodecTheora:
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return "Theora";
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case kCodecVP8:
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return "VP8";
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case kCodecVP9:
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return "VP9";
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default:
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NOTIMPLEMENTED() << "Unknown Video Codec: " << video_codec;
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return "UnknownVideoCodec";
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}
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}
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} // namespace
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VideoStreamInfo::VideoStreamInfo(int track_id,
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uint32 time_scale,
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uint64 duration,
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VideoCodec codec,
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const std::string& codec_string,
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const std::string& language,
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uint16 width,
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uint16 height,
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uint8 nalu_length_size,
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const uint8* extra_data,
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size_t extra_data_size,
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bool is_encrypted)
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: StreamInfo(kStreamVideo,
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track_id,
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time_scale,
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duration,
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codec_string,
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language,
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extra_data,
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extra_data_size,
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is_encrypted),
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codec_(codec),
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width_(width),
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height_(height),
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nalu_length_size_(nalu_length_size) {}
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VideoStreamInfo::~VideoStreamInfo() {}
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bool VideoStreamInfo::IsValidConfig() const {
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return codec_ != kUnknownVideoCodec &&
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width_ > 0 && width_ <= limits::kMaxDimension &&
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height_ > 0 && height_ <= limits::kMaxDimension &&
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(nalu_length_size_ <= 2 || nalu_length_size_ == 4);
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}
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std::string VideoStreamInfo::ToString() const {
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return base::StringPrintf(
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"%s codec: %s\n width: %d\n height: %d\n nalu_length_size: %d\n",
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StreamInfo::ToString().c_str(),
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VideoCodecToString(codec_).c_str(),
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width_,
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height_,
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nalu_length_size_);
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}
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std::string VideoStreamInfo::GetCodecString(VideoCodec codec,
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uint8 profile,
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uint8 compatible_profiles,
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uint8 level) {
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switch (codec) {
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case kCodecVP8:
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return "vp8";
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case kCodecVP9:
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return "vp9";
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case kCodecH264: {
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const uint8 bytes[] = {profile, compatible_profiles, level};
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return "avc1." +
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StringToLowerASCII(base::HexEncode(bytes, arraysize(bytes)));
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}
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default:
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NOTIMPLEMENTED() << "Unknown Codec: " << codec;
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return "unknown";
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}
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}
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} // namespace media
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