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Diffstat (limited to 'src/class/video/video_device.h')
| -rw-r--r-- | src/class/video/video_device.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/class/video/video_device.h b/src/class/video/video_device.h index 2b41c3bfe..f14555e4f 100644 --- a/src/class/video/video_device.h +++ b/src/class/video/video_device.h @@ -35,6 +35,16 @@ extern "C" { #endif + +//--------------------------------------------------------------------+ +// Payload request +//--------------------------------------------------------------------+ +typedef struct TU_ATTR_PACKED { + void* buf; /* Payload buffer to be filled */ + size_t length; /* Length of the requested data in bytes */ + size_t offset; /* Offset within the frame (in bytes) */ +} tud_video_payload_request_t; + //--------------------------------------------------------------------+ // Application API (Multiple Ports) // CFG_TUD_VIDEO > 1 @@ -83,6 +93,16 @@ int tud_video_power_mode_cb(uint_fast8_t ctl_idx, uint8_t power_mod); int tud_video_commit_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, video_probe_and_commit_control_t const *parameters); +/** Invoked if buffer is set to NULL (allows bufferless on the fly data generation) + * + * @param[in] ctl_idx Destination control interface index + * @param[in] stm_idx Destination streaming interface index + * @param[out] payload_buf Payload storage buffer (target buffer for requested data) + * @param[in] payload_size Size of payload_buf (requested data size) + * @param[in] offset Current byte offset relative to given bufsize from tud_video_n_frame_xfer (framesize) + * @return video_error_code_t */ +void tud_video_prepare_payload_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, tud_video_payload_request_t* request); + //--------------------------------------------------------------------+ // INTERNAL USBD-CLASS DRIVER API //--------------------------------------------------------------------+ |