74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
// Copyright (c) 2013 Google Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "media/base/audio_stream_info.h"
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#include <sstream>
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#include "base/strings/string_number_conversions.h"
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#include "media/base/limits.h"
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namespace media {
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AudioStreamInfo::AudioStreamInfo(int track_id,
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uint32 time_scale,
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uint64 duration,
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AudioCodec codec,
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const std::string& codec_string,
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const std::string& language,
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uint8 sample_bits,
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uint8 num_channels,
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uint32 sampling_frequency,
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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(kStreamAudio,
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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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sample_bits_(sample_bits),
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num_channels_(num_channels),
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sampling_frequency_(sampling_frequency) {}
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AudioStreamInfo::~AudioStreamInfo() {}
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bool AudioStreamInfo::IsValidConfig() const {
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return codec_ != kUnknownAudioCodec && num_channels_ != 0 &&
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num_channels_ <= limits::kMaxChannels && sample_bits_ > 0 &&
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sample_bits_ <= limits::kMaxBitsPerSample &&
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sampling_frequency_ > 0 &&
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sampling_frequency_ <= limits::kMaxSampleRate;
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}
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std::string AudioStreamInfo::ToString() const {
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std::ostringstream s;
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s << "codec: " << codec_
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<< " sample_bits: " << static_cast<int>(sample_bits_)
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<< " num_channels: " << static_cast<int>(num_channels_)
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<< " sampling_frequency: " << sampling_frequency_
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<< " " << StreamInfo::ToString();
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return s.str();
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}
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std::string AudioStreamInfo::GetCodecString(AudioCodec codec,
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uint8 audio_object_type) {
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switch (codec) {
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case kCodecVorbis:
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return "vorbis";
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case kCodecOpus:
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return "opus";
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case kCodecAAC:
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return "mp4a.40." + base::UintToString(audio_object_type);
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}
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return "unknown";
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}
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} // namespace media
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