Function ImJumpMidiInternal

TheForceEngine/TFE_Jedi/IMuse/imuse.cpp:748–807

	}

	s32 ImJumpMidiInternal(ImPlayerData* data, s32 chunk, s32 measure, s32 beat, s32 tick, s32 sustain)
	{
		u8* sndData = ImInternalGetSoundData(data->soundId);
		if (!sndData) { return imInvalidSound; }
				
		measure--;
		beat--;
		chunk--;
		if (measure >= 1000 || beat >= 12 || tick >= 480)
		{
			return imArgErr;
		}

		ImMidiLock();
		memcpy(&s_imSoundPrevState, data, sizeof(ImPlayerData));
		memcpy(&s_imSoundNextState, data, sizeof(ImPlayerData));

		IM_DBG_MSG("JMP c:%d t:%03d.%02d.%03d -> c:%d t:%03d.%02d.%03d [s:%d]", s_imSoundNextState.seqIndex, ImTime_getMeasure(data->nextTick), ImTime_getBeat(data->nextTick), ImTime_getTicks(data->nextTick), chunk, measure, beat, tick, sustain);
		u32 nextTick = ImFixupSoundTick(data, ImTime_setMeasure(measure) + ImTime_setBeat(beat) + ImTime_setTick(tick));
		// If we either change chunks or jump backwards, the sequence needs to be setup/reset.
		if (chunk != s_imSoundNextState.seqIndex || nextTick < (u32)s_imSoundNextState.nextTick)
		{
			if (ImSetSequence(&s_imSoundNextState, sndData, chunk))
			{
				IM_LOG_ERR("%s", "sq jump to invalid chunk.");
				ImMidiUnlock();
				return imFail;
			}
		}
		s_imSoundNextState.nextTick = nextTick;
		ImAdvanceMidi(&s_imSoundNextState, sndData, s_jumpMidiCmdFunc);
		if (s_imEndOfTrack)
		{
			IM_LOG_WRN("sq jump to invalid ms:bt:tk...", NULL);
			ImMidiUnlock();
			return imFail;
		}

		if (sustain)
		{
			// Loop through the channels.
			for (s32 c = 0; c < MIDI_CHANNEL_COUNT; c++)
			{
				ImMidiCommand(data->player, c, MID_SUSTAIN_SWITCH, 0);
				ImMidiCommand(data->player, c, MID_MODULATIONWHEEL_MSB, 0);
				ImHandleChannelPitchBend(data->player, c, 0, imPanCenter);
			}
			ImJumpSustain(data->player, sndData, &s_imSoundPrevState, &s_imSoundNextState);
		}
		else
		{
			ImMidiStopAllNotes(data->player);
		}

		memcpy(data, &s_imSoundNextState, sizeof(ImPlayerData));
		s_imEndOfTrack = 1;
		ImMidiUnlock();