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clamp committed video payload size to streaming ep buffer

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Signed-off-by: Javid Khan <dxbjavid@gmail.com>
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Javid Khan
2026-07-30 14:13:50 +05:30
parent eef5af86aa
commit 15dd3120ac
1 changed files with 6 additions and 0 deletions
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6
src/class/video/video_device.c
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@ -1145,6 +1145,12 @@ static int handle_video_stm_cs_req(uint8_t rhport, uint8_t stage,
TU_VERIFY(_update_streaming_parameters(stm, param), VIDEO_ERROR_INVALID_VALUE_WITHIN_RANGE);
/* Set the negotiated value */
stm->max_payload_transfer_size = param->dwMaxPayloadTransferSize;
/* A host may commit before the parameters are fully negotiated, in which case
* _update_streaming_parameters returns early without capping the payload size.
* Clamp here so a bulk stream cannot overrun the endpoint buffer. */
if (CFG_TUD_VIDEO_STREAMING_EP_BUFSIZE < stm->max_payload_transfer_size) {
stm->max_payload_transfer_size = CFG_TUD_VIDEO_STREAMING_EP_BUFSIZE;
}
int ret = tud_video_commit_cb(stm->index_vc, stm->index_vs, param);
if (VIDEO_ERROR_NONE == ret) {
stm->state = VS_STATE_COMMITTED;