59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "MusicChunk.hxx"
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#include "pcm/AudioFormat.hxx"
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#include "tag/Tag.hxx"
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#include <cassert>
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MusicChunkInfo::MusicChunkInfo() noexcept = default;
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MusicChunkInfo::~MusicChunkInfo() noexcept = default;
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#ifndef NDEBUG
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bool
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MusicChunkInfo::CheckFormat(const AudioFormat other_format) const noexcept
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{
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assert(other_format.IsValid());
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return length == 0 || audio_format == other_format;
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}
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#endif
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std::span<std::byte>
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MusicChunk::Write(const AudioFormat af,
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SongTime data_time, uint16_t _bit_rate) noexcept
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{
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assert(CheckFormat(af));
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assert(length == 0 || audio_format.IsValid());
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if (length == 0) {
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/* if the chunk is empty, nobody has set bitRate and
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time yet */
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bit_rate = _bit_rate;
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time = data_time;
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#ifndef NDEBUG
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audio_format = af;
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#endif
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}
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const size_t frame_size = af.GetFrameSize();
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size_t num_frames = (sizeof(data) - length) / frame_size;
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return { data + length, num_frames * frame_size };
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}
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bool
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MusicChunk::Expand(const AudioFormat af, size_t _length) noexcept
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{
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const size_t frame_size = af.GetFrameSize();
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assert(length + _length <= sizeof(data));
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assert(audio_format == af);
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length += _length;
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return length + frame_size > sizeof(data);
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}
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