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decoder/wavpack: move code to WavpackInput methods

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This commit is contained in:
Max Kellermann 2016-12-10 00:17:46 +01:00
parent 0525a6f90f
commit f7f59df8aa
1 changed files with 63 additions and 53 deletions
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116
src/decoder/plugins/WavpackDecoderPlugin.cxx
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@ -264,6 +264,63 @@ struct WavpackInput {
:client(_client), is(_is), last_byte(EOF) {}
int32_t ReadBytes(void *data, size_t bcount);
InputStream::offset_type GetPos() const {
return is.GetOffset();
}
int SetPosAbs(InputStream::offset_type pos) {
try {
is.LockSeek(pos);
return 0;
} catch (const std::runtime_error &) {
return -1;
}
}
int SetPosRel(InputStream::offset_type delta, int mode) {
offset_type offset = delta;
switch (mode) {
case SEEK_SET:
break;
case SEEK_CUR:
offset += is.GetOffset();
break;
case SEEK_END:
if (!is.KnownSize())
return -1;
offset += is.GetSize();
break;
default:
return -1;
}
return SetPosAbs(offset);
}
int PushBackByte(int c) {
if (last_byte == EOF) {
last_byte = c;
return c;
} else {
return EOF;
}
}
InputStream::offset_type GetLength() const {
if (!is.KnownSize())
return 0;
return is.GetSize();
}
bool CanSeek() const {
return is.IsSeekable();
}
};
/**
@ -316,89 +373,42 @@ static uint32_t
wavpack_input_get_pos(void *id)
{
WavpackInput &wpi = *wpin(id);
return wpi.is.GetOffset();
return wpi.GetPos();
}
static int
wavpack_input_set_pos_abs(void *id, uint32_t pos)
{
WavpackInput &wpi = *wpin(id);
try {
wpi.is.LockSeek(pos);
return 0;
} catch (const std::runtime_error &) {
return -1;
}
return wpi.SetPosAbs(pos);
}
static int
wavpack_input_set_pos_rel(void *id, int32_t delta, int mode)
{
WavpackInput &wpi = *wpin(id);
InputStream &is = wpi.is;
offset_type offset = delta;
switch (mode) {
case SEEK_SET:
break;
case SEEK_CUR:
offset += is.GetOffset();
break;
case SEEK_END:
if (!is.KnownSize())
return -1;
offset += is.GetSize();
break;
default:
return -1;
}
try {
wpi.is.LockSeek(offset);
return 0;
} catch (const std::runtime_error &) {
return -1;
}
return wpi.SetPosRel(delta, mode);
}
static int
wavpack_input_push_back_byte(void *id, int c)
{
WavpackInput &wpi = *wpin(id);
if (wpi.last_byte == EOF) {
wpi.last_byte = c;
return c;
} else {
return EOF;
}
return wpi.PushBackByte(c);
}
static uint32_t
wavpack_input_get_length(void *id)
{
WavpackInput &wpi = *wpin(id);
InputStream &is = wpi.is;
if (!is.KnownSize())
return 0;
return is.GetSize();
return wpi.GetLength();
}
static int
wavpack_input_can_seek(void *id)
{
WavpackInput &wpi = *wpin(id);
InputStream &is = wpi.is;
return is.IsSeekable();
return wpi.CanSeek();
}
static WavpackStreamReader mpd_is_reader = {