diff options
| -rw-r--r-- | examples/device/video_capture/src/main.c | 10 | ||||
| -rw-r--r-- | src/class/video/video_device.c | 13 | ||||
| -rw-r--r-- | src/class/video/video_device.h | 12 |
3 files changed, 24 insertions, 11 deletions
diff --git a/examples/device/video_capture/src/main.c b/examples/device/video_capture/src/main.c index b01830dfe..77ffd7bef 100644 --- a/examples/device/video_capture/src/main.c +++ b/examples/device/video_capture/src/main.c @@ -131,25 +131,25 @@ void tud_resume_cb(void) { #error Demo only supports YUV2 please define CFG_EXAMPLE_VIDEO_DISABLE_MJPEG #endif -void tud_video_prepare_payload_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, void* payload_buf, size_t payload_size, size_t offset) +void tud_video_prepare_payload_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, tud_video_payload_request_t* request) { static uint32_t frame_counter = 0; (void)ctl_idx; (void)stm_idx; /* Offset will be zero at the start of a new frame */ - if (!offset) frame_counter++; + if (!request->offset) frame_counter++; - for (size_t buf_pos = 0; buf_pos < payload_size; buf_pos += 2) { + for (size_t buf_pos = 0; buf_pos < request->length; buf_pos += 2) { /* Position within the current line (pixel relative) */ - int line_pos = ((offset + buf_pos)>>1) % FRAME_WIDTH; + int line_pos = ((request->offset + buf_pos)>>1) % FRAME_WIDTH; /* Choose color based on the position and change the table offset every 4 frames */ const uint8_t* color = bar_color[(line_pos/(FRAME_WIDTH / 8) + (frame_counter>>2)) % 8]; /* Copy pixel data for odd or even pixels */ - memcpy(&((uint8_t*)payload_buf)[buf_pos], &color[(line_pos & 1) ? 2 : 0], 2); + memcpy(&((uint8_t*)request->buf)[buf_pos], &color[(line_pos & 1) ? 2 : 0], 2); } } diff --git a/src/class/video/video_device.c b/src/class/video/video_device.c index 00f192af6..326f5c13d 100644 --- a/src/class/video/video_device.c +++ b/src/class/video/video_device.c @@ -214,12 +214,10 @@ TU_ATTR_WEAK int tud_video_commit_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, return VIDEO_ERROR_NONE; } -TU_ATTR_WEAK void tud_video_prepare_payload_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, void* payload_buf, size_t payload_size, size_t offset) { +TU_ATTR_WEAK void tud_video_prepare_payload_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, tud_video_payload_request_t* request) { (void) ctl_idx; (void) stm_idx; - (void) payload_buf; - (void) payload_size; - (void) offset; + (void) request; } //--------------------------------------------------------------------+ @@ -871,7 +869,12 @@ static uint_fast16_t _prepare_in_payload(videod_streaming_interface_t *stm, uint if (stm->buffer) { memcpy(&ep_buf[hdr_len], stm->buffer + stm->offset, data_len); } else { - tud_video_prepare_payload_cb(stm->index_vc, stm->index_vs, &ep_buf[hdr_len], data_len, stm->offset); + tud_video_payload_request_t rqst = { + .buf = &ep_buf[hdr_len], + .length = data_len, + .offset = stm->offset + }; + tud_video_prepare_payload_cb(stm->index_vc, stm->index_vs, &rqst); } stm->offset += data_len; remaining -= data_len; diff --git a/src/class/video/video_device.h b/src/class/video/video_device.h index b3094dd81..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 @@ -91,7 +101,7 @@ int tud_video_commit_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, * @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, void* payload_buf, size_t payload_size, size_t offset); +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 |