This release of the OS/2 Multimedia Programming Reference includes the following:

• Additional playlist commands:

  • SEMPOST_OPERATION
    
  • SEMWAIT_OPERATION
  See Memory Playlist Commands for a description of these commands.

MCI_BUFFER and MCI_MIXSETUP messages and associated data structures. These messages enable use of the Direct Audio RouTines (DART), which allow applications to use a high-speed method of communication with the audio device.

MCI_DOS_QUEUE flag for the MCI_OPEN message

Enhanced DIVE capabilities including:

• Transparent blitting to the screen using DiveSetTransparentBlitMode
  
• Rotation of the output image when blitting to the screen (see the description of fInvert in the SETUP_BLITTER structure)
  
• Blitting of changed lines using DiveBlitImageLines

JPEGOPTIONS supporting extended JPEG I/O procedure information

Additional flags for MCI_CUE to allow digital video devices to seek to a specified position and to display or hide the video window when cueing the media

Real-Time MIDI Functions

Reorganization of String Commands

The string commands are organized into the following categories: System Commands, Required Commands, Basic Commands, and device-type specific command categories including CD audio, CD/XA, digital video, MIDI, videodisc player, video overlay, and waveform audio. Read the introduction to each of these sections carefully to understand how these categories relate to one another, where to find the string command you're looking for, and why it's located in the category that it is.

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