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decoder/mad: refactor local variables in FillBuffer()

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This commit is contained in:
Max Kellermann 2019-08-02 22:19:23 +02:00
parent f9eff31205
commit 10da9ee7ba
1 changed files with 14 additions and 9 deletions
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23
src/decoder/plugins/MadDecoderPlugin.cxx
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@ -223,26 +223,31 @@ MadDecoder::Seek(long offset)
inline bool
MadDecoder::FillBuffer()
{
size_t remaining = 0, length = sizeof(input_buffer);
/* amount of rest data still residing in the buffer */
size_t rest_size = 0;
size_t max_read_size = sizeof(input_buffer);
unsigned char *dest = input_buffer;
if (stream.next_frame != nullptr) {
remaining = stream.bufend - stream.next_frame;
memmove(input_buffer, stream.next_frame, remaining);
dest += remaining;
length -= remaining;
rest_size = stream.bufend - stream.next_frame;
memmove(input_buffer, stream.next_frame, rest_size);
dest += rest_size;
max_read_size -= rest_size;
}
/* we've exhausted the read buffer, so give up!, these potential
* mp3 frames are way too big, and thus unlikely to be mp3 frames */
if (length == 0)
if (max_read_size == 0)
return false;
length = decoder_read(client, input_stream, dest, length);
if (length == 0)
size_t nbytes = decoder_read(client, input_stream,
dest, max_read_size);
if (nbytes == 0) {
return false;
}
mad_stream_buffer(&stream, input_buffer, length + remaining);
mad_stream_buffer(&stream, input_buffer, rest_size + nbytes);
stream.error = MAD_ERROR_NONE;
return true;