66 lines
1.3 KiB
C++
66 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 "ModCommon.hxx"
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#include "Log.hxx"
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static constexpr size_t MOD_PREALLOC_BLOCK = 256 * 1024;
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static constexpr offset_type MOD_FILE_LIMIT = 100 * 1024 * 1024;
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AllocatedArray<std::byte>
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mod_loadfile(const Domain *domain, DecoderClient *client, InputStream &is)
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{
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//known/unknown size, preallocate array, lets read in chunks
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const bool is_stream = !is.KnownSize();
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size_t buffer_size;
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if (is_stream)
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buffer_size = MOD_PREALLOC_BLOCK;
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else {
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const auto size = is.GetSize();
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if (size == 0) {
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LogWarning(*domain, "file is empty");
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return nullptr;
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}
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if (size > MOD_FILE_LIMIT) {
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LogWarning(*domain, "file too large");
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return nullptr;
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}
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buffer_size = size;
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}
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auto buffer = AllocatedArray<std::byte>(buffer_size);
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std::byte *p = buffer.data();
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std::byte *const end = p + buffer.size();
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while (true) {
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size_t ret = decoder_read(client, is, p, end - p);
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if (ret == 0) {
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if (is.LockIsEOF())
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/* end of file */
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break;
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/* I/O error - skip this song */
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return buffer;
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}
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p += ret;
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if (p == end) {
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if (!is_stream)
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break;
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LogWarning(*domain, "stream too large");
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return buffer;
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}
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}
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buffer.SetSize(p - buffer.data());
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return buffer;
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}
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