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NS_E_CD_EMPTY_TRACK_QUEUE
Failure boundary and ownership
NS_E_CD_EMPTY_TRACK_QUEUE with value 0xC00D11F9 records starting playback or extraction without a queued CD track. The producing call and its state are more diagnostic than a later aggregate Player failure.
Underlying mechanism
At the checkpoint, windows Media Player identifies the inserted medium, reads its table of contents, creates a CD reader, and then chooses digital audio extraction or an analog playback path; Ripping adds destination-path creation and an encoder selected from the user’s rip settings. The page-specific boundary is starting playback or extraction without a queued CD track.
Recognition of the drive does not prove that usable audio sectors, a stable digital-read path or a valid rip destination are available. The condition can be reproduced when the old queue was cleared on disc change but the start command is still dispatched.
Trace fields worth keeping
| Evidence | Why it matters for empty track queue |
|---|---|
| Producing object and operation | physical drive identifier, media-change generation, disc and track number, table-of-contents result, digital/analog mode, error-correction flag, read speed, rip state, output format and first lower-level drive error |
| Decisive observation | queue generation, track count, selected playlist item and command that starts the reader |
| Generation identity | Record the same disc, device, job or Player operation generation that returned this result; a reconnect or media change creates a different test. |
| Underlying result | Keep the first device, filesystem, COM, codec, DirectShow, IMAPI or BITS result seen before the Player mapped it to this result. |
| Controlled comparison | Repeat the producing call after changing only this condition: enqueue a valid track from the current disc before issuing the operation. |
What the comparison proves
| Observation | Interpretation |
|---|---|
| The recorded values match the boundary | The result is consistent with starting playback or extraction without a queued CD track; correct that state before changing unrelated codecs, drivers or playlists. |
| A lower layer failed before this result | Preserve that earlier HRESULT or device result because this result may be only the Player-level mapping. |
| The same call passes after one isolated change | The comparison supports the empty track queue diagnosis rather than a broad installation failure. |
| The code changes after retesting it | The boundary was passed; diagnose the new HRESULT as the next independent stage. |
It scopes the failure to starting playback or extraction without a queued CD track.
Decision path
- Capture
0xC00D11F9, it, the exact Player/API operation and the first timestamp at which it appears. - Save queue generation, track count, selected playlist item and command that starts the reader; do this before ejecting media, reconnecting a device, canceling a job or rebuilding the Player object.
- correlate the result with physical drive identifier, media-change generation, disc and track number, table-of-contents result, digital/analog mode, error-correction flag, read speed, rip state, output format and first lower-level drive error.
- Reproduce once with the original source and destination, then apply only this change: enqueue a valid track from the current disc before issuing the operation.
- Create a fresh operation generation and verify that the original call advances beyond the empty track queue boundary.
Close alternatives
| Related result | Different diagnostic boundary |
|---|---|
NS_E_CD_NO_BUFFERS_READ | obtaining the first digital-audio buffers from the CD reader |
NS_E_CD_NO_READER | creating the Player’s CD reader/filter for the selected drive |
NS_E_CD_ISRC_INVALID | validating the International Standard Recording Code associated with a track |
Safe correction
Correct this boundary by making sure you enqueue a valid track from the current disc before issuing the operation. Then reacquire the interface or media state that produced it and repeat that call.
When verifying it, do not polish the disc, change the driver, switch read modes and change the rip format in one test; preserve the first failing track and alter one boundary at a time.
Source material
- About CD Ripping.
- Windows Media Player object model.
- IDiscRecorder2::DisableMcn and media-change notification.
- WAVEFORMATEX structure.
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