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decoder/opus: add method IsInitialized()

This commit is contained in:
Max Kellermann 2016-05-11 17:24:48 +02:00
parent 20758cef30
commit 1af59d31b9
1 changed files with 11 additions and 4 deletions
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15
src/decoder/plugins/OpusDecoderPlugin.cxx
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@ -102,6 +102,13 @@ public:
~MPDOpusDecoder();
/**
* Has decoder_initialized() been called yet?
*/
bool IsInitialized() const {
return previous_channels != 0;
}
bool ReadNextPage(OggSyncState &oy);
DecoderCommand HandlePackets();
@ -240,9 +247,9 @@ MPDOpusDecoder::HandleBOS(const ogg_packet &packet)
}
assert(opus_decoder == nullptr);
assert((previous_channels == 0) == (output_buffer == nullptr));
assert(IsInitialized() == (output_buffer != nullptr));
if (previous_channels != 0 && channels != previous_channels) {
if (IsInitialized() && channels != previous_channels) {
FormatWarning(opus_domain,
"Next stream has different channels (%u -> %u)",
previous_channels, channels);
@ -263,7 +270,7 @@ MPDOpusDecoder::HandleBOS(const ogg_packet &packet)
return DecoderCommand::STOP;
}
if (previous_channels != 0) {
if (IsInitialized()) {
/* decoder was already initialized by the previous
stream; skip the rest of this method */
LogDebug(opus_domain, "Found another stream");
@ -293,7 +300,7 @@ MPDOpusDecoder::HandleBOS(const ogg_packet &packet)
inline DecoderCommand
MPDOpusDecoder::HandleEOS()
{
if (eos_granulepos < 0 && previous_channels != 0) {
if (eos_granulepos < 0 && IsInitialized()) {
/* allow chaining of (unseekable) streams */
assert(opus_decoder != nullptr);
assert(output_buffer != nullptr);