Add support for initPts in scePsmfPlayerStart().

It won't be super speedy though, could more ideally do it on the calls to
Update()...

Core/HLE/scePsmf.cpp

@@ -1232,6 +1232,13 @@ int scePsmfPlayerStart(u32 psmfPlayer, u32 psmfPlayerData, int initPts)
 	psmfplayer->status = PSMF_PLAYER_STATUS_PLAYING;
 
 	psmfplayer->mediaengine->openContext();
+	// TODO: It would be better to spread this out into the Update() calls.
+	while (!psmfplayer->mediaengine->seekTo(initPts, videoPixelMode)) {
+		_PsmfPlayerFillRingbuffer(psmfplayer);
+		if (psmfplayer->mediaengine->IsVideoEnd()) {
+			break;
+		}
+	}
 	return 0;
 }
 
@@ -1555,7 +1562,7 @@ u32 scePsmfPlayerGetCurrentAudioStream(u32 psmfPlayer, u32 audioCodecAddr, u32 a
 	PsmfPlayer *psmfplayer = getPsmfPlayer(psmfPlayer);
 	if (!psmfplayer) {
 		ERROR_LOG(ME, "scePsmfPlayerGetCurrentAudioStream(%08x, %08x, %08x): invalid psmf player", psmfPlayer, audioCodecAddr, audioStreamNumAddr);
-		return ERROR_PSMF_NOT_FOUND;
+		return ERROR_PSMFPLAYER_INVALID_STATUS;
 	}
 	if (psmfplayer->status == PSMF_PLAYER_STATUS_INIT) {
 		ERROR_LOG(ME, "scePsmfPlayerGetCurrentVideoStream(%08x): psmf not yet set", psmfPlayer);

Core/HW/MediaEngine.cpp

@@ -359,6 +359,28 @@ int MediaEngine::addStreamData(u8* buffer, int addSize) {
 	return size;
 }
 
+bool MediaEngine::seekTo(s64 timestamp, int videoPixelMode) {
+	if (timestamp <= 0) {
+		return true;
+	}
+
+	// Just doing it the not so great way to be sure audio is in sync.
+	int timeout = 1000;
+	while (getVideoTimeStamp() < timestamp - 3003) {
+		if (getAudioTimeStamp() < getVideoTimeStamp()) {
+			getNextAudioFrame(NULL, NULL, NULL);
+		}
+		if (!stepVideo(videoPixelMode)) {
+			return false;
+		}
+		if (--timeout <= 0) {
+			return true;
+		}
+	}
+
+	return true;
+}
+
 bool MediaEngine::setVideoStream(int streamNum, bool force) {
 	if (m_videoStream == streamNum && !force) {
 		// Yay, nothing to do.
@@ -733,6 +755,16 @@ int MediaEngine::getAudioRemainSize() {
 	return m_demux->getRemainSize();
 }
 
+int MediaEngine::getNextAudioFrame(u8 **buf, int *headerCode1, int *headerCode2) {
+	// When getting a frame, increment pts
+	m_audiopts += 4180;
+
+	// Demux now (rather than on add data) so that we select the right stream.
+	m_demux->demux(m_audioStream);
+
+	return m_demux->getNextAudioFrame(buf, headerCode1, headerCode2);
+}
+
 int MediaEngine::getAudioSamples(u32 bufferPtr) {
 	if (!Memory::IsValidAddress(bufferPtr)) {
 		ERROR_LOG_REPORT(ME, "Ignoring bad audio decode address %08x during video playback", bufferPtr);
@@ -743,15 +775,9 @@ int MediaEngine::getAudioSamples(u32 bufferPtr) {
 		return 0;
 	}
 
-	// When getting a frame, increment pts
-	m_audiopts += 4180;
-	
-	// Demux now (rather than on add data) so that we select the right stream.
-	m_demux->demux(m_audioStream);
-
 	u8 *audioFrame = 0;
 	int headerCode1, headerCode2;
-	int frameSize = m_demux->getNextAudioFrame(&audioFrame, &headerCode1, &headerCode2);
+	int frameSize = getNextAudioFrame(&audioFrame, &headerCode1, &headerCode2);
 	if (frameSize == 0) {
 		return 0;
 	}

Core/HW/MediaEngine.h

@@ -66,6 +66,7 @@ public:
 
 	// Returns number of packets actually added. I guess the buffer might be full.
 	int addStreamData(u8* buffer, int addSize);
+	bool seekTo(s64 timestamp, int videoPixelMode);
 
 	bool setVideoStream(int streamNum, bool force = false);
 	// TODO: Return false if the stream doesn't exist.
@@ -93,6 +94,7 @@ public:
 
 private:
 	void updateSwsFormat(int videoPixelMode);
+	int getNextAudioFrame(u8 **buf, int *headerCode1, int *headerCode2);
 
 public:  // TODO: Very little of this below should be public.
 

Core/HW/MpegDemux.cpp

@@ -248,7 +248,9 @@ int MpegDemux::getNextAudioFrame(u8 **buf, int *headerCode1, int *headerCode2)
 		audioPos = gotsize;
 	}
 	m_audioStream.pop_front(0, audioPos);
-	*buf = m_audioFrame + 8;
+	if (buf) {
+		*buf = m_audioFrame + 8;
+	}
 	return frameSize - 8;
 }