Lines Matching full:stream
124 static void uvc_fixup_video_ctrl(struct uvc_streaming *stream, in uvc_fixup_video_ctrl() argument
146 if (usb_match_one_id(stream->dev->intf, &elgato_cam_link_4k) && in uvc_fixup_video_ctrl()
150 /* uvc_dbg(stream->dev, VIDEO, in uvc_fixup_video_ctrl()
158 for (i = 0; i < stream->nformats; ++i) { in uvc_fixup_video_ctrl()
159 if (stream->format[i].index == ctrl->bFormatIndex) { in uvc_fixup_video_ctrl()
160 format = &stream->format[i]; in uvc_fixup_video_ctrl()
180 stream->dev->uvc_version < 0x0110)) in uvc_fixup_video_ctrl()
193 stream->dev->quirks & UVC_QUIRK_FIX_BANDWIDTH && in uvc_fixup_video_ctrl()
194 stream->intf->num_altsetting > 1) { in uvc_fixup_video_ctrl()
211 if (stream->dev->udev->speed == USB_SPEED_HIGH) in uvc_fixup_video_ctrl()
228 static size_t uvc_video_ctrl_size(struct uvc_streaming *stream) in uvc_video_ctrl_size() argument
234 if (stream->dev->uvc_version < 0x0110) in uvc_video_ctrl_size()
236 else if (stream->dev->uvc_version < 0x0150) in uvc_video_ctrl_size()
242 static int uvc_get_video_ctrl(struct uvc_streaming *stream, in uvc_get_video_ctrl() argument
245 u16 size = uvc_video_ctrl_size(stream); in uvc_get_video_ctrl()
249 if ((stream->dev->quirks & UVC_QUIRK_PROBE_DEF) && in uvc_get_video_ctrl()
257 ret = __uvc_query_ctrl(stream->dev, query, 0, stream->intfnum, in uvc_get_video_ctrl()
266 uvc_warn_once(stream->dev, UVC_WARN_MINMAX, "UVC non " in uvc_get_video_ctrl()
278 uvc_warn_once(stream->dev, UVC_WARN_PROBE_DEF, "UVC non " in uvc_get_video_ctrl()
310 ctrl->dwClockFrequency = stream->dev->clock_frequency; in uvc_get_video_ctrl()
321 uvc_fixup_video_ctrl(stream, ctrl); in uvc_get_video_ctrl()
329 static int uvc_set_video_ctrl(struct uvc_streaming *stream, in uvc_set_video_ctrl() argument
332 u16 size = uvc_video_ctrl_size(stream); in uvc_set_video_ctrl()
360 ret = __uvc_query_ctrl(stream->dev, UVC_SET_CUR, 0, stream->intfnum, in uvc_set_video_ctrl()
374 int uvc_probe_video(struct uvc_streaming *stream, in uvc_probe_video() argument
389 ret = uvc_set_video_ctrl(stream, probe, 1); in uvc_probe_video()
394 if (!(stream->dev->quirks & UVC_QUIRK_PROBE_MINMAX)) { in uvc_probe_video()
395 ret = uvc_get_video_ctrl(stream, &probe_min, 1, UVC_GET_MIN); in uvc_probe_video()
398 ret = uvc_get_video_ctrl(stream, &probe_max, 1, UVC_GET_MAX); in uvc_probe_video()
406 ret = uvc_set_video_ctrl(stream, probe, 1); in uvc_probe_video()
409 ret = uvc_get_video_ctrl(stream, probe, 1, UVC_GET_CUR); in uvc_probe_video()
413 if (stream->intf->num_altsetting == 1) in uvc_probe_video()
417 if (bandwidth <= stream->maxpsize) in uvc_probe_video()
420 if (stream->dev->quirks & UVC_QUIRK_PROBE_MINMAX) { in uvc_probe_video()
436 static int uvc_commit_video(struct uvc_streaming *stream, in uvc_commit_video() argument
439 return uvc_set_video_ctrl(stream, probe, 0); in uvc_commit_video()
455 uvc_video_clock_decode(struct uvc_streaming *stream, struct uvc_buffer *buf, in uvc_video_clock_decode() argument
507 if (dev_sof == stream->clock.last_sof) in uvc_video_clock_decode()
510 stream->clock.last_sof = dev_sof; in uvc_video_clock_decode()
512 host_sof = usb_get_current_frame_number(stream->dev->udev); in uvc_video_clock_decode()
534 if (stream->clock.sof_offset == (u16)-1) { in uvc_video_clock_decode()
537 stream->clock.sof_offset = delta_sof; in uvc_video_clock_decode()
539 stream->clock.sof_offset = 0; in uvc_video_clock_decode()
542 dev_sof = (dev_sof + stream->clock.sof_offset) & 2047; in uvc_video_clock_decode()
544 spin_lock_irqsave(&stream->clock.lock, flags); in uvc_video_clock_decode()
546 sample = &stream->clock.samples[stream->clock.head]; in uvc_video_clock_decode()
553 stream->clock.head = (stream->clock.head + 1) % stream->clock.size; in uvc_video_clock_decode()
555 if (stream->clock.count < stream->clock.size) in uvc_video_clock_decode()
556 stream->clock.count++; in uvc_video_clock_decode()
558 spin_unlock_irqrestore(&stream->clock.lock, flags); in uvc_video_clock_decode()
561 static void uvc_video_clock_reset(struct uvc_streaming *stream) in uvc_video_clock_reset() argument
563 struct uvc_clock *clock = &stream->clock; in uvc_video_clock_reset()
571 static int uvc_video_clock_init(struct uvc_streaming *stream) in uvc_video_clock_init() argument
573 struct uvc_clock *clock = &stream->clock; in uvc_video_clock_init()
583 uvc_video_clock_reset(stream); in uvc_video_clock_init()
588 static void uvc_video_clock_cleanup(struct uvc_streaming *stream) in uvc_video_clock_cleanup() argument
590 kfree(stream->clock.samples); in uvc_video_clock_cleanup()
591 stream->clock.samples = NULL; in uvc_video_clock_cleanup()
682 void uvc_video_clock_update(struct uvc_streaming *stream, in uvc_video_clock_update() argument
686 struct uvc_clock *clock = &stream->clock; in uvc_video_clock_update()
737 stream->dev->name, buf->pts, in uvc_video_clock_update()
772 stream->dev->name, in uvc_video_clock_update()
786 * Stream statistics
789 static void uvc_video_stats_decode(struct uvc_streaming *stream, in uvc_video_stats_decode() argument
799 if (stream->stats.stream.nb_frames == 0 && in uvc_video_stats_decode()
800 stream->stats.frame.nb_packets == 0) in uvc_video_stats_decode()
801 stream->stats.stream.start_ts = ktime_get(); in uvc_video_stats_decode()
824 stream->stats.frame.nb_invalid++; in uvc_video_stats_decode()
838 if (has_pts && stream->stats.frame.nb_pts) { in uvc_video_stats_decode()
839 if (stream->stats.frame.pts != pts) { in uvc_video_stats_decode()
840 stream->stats.frame.nb_pts_diffs++; in uvc_video_stats_decode()
841 stream->stats.frame.last_pts_diff = in uvc_video_stats_decode()
842 stream->stats.frame.nb_packets; in uvc_video_stats_decode()
847 stream->stats.frame.nb_pts++; in uvc_video_stats_decode()
848 stream->stats.frame.pts = pts; in uvc_video_stats_decode()
854 if (stream->stats.frame.size == 0) { in uvc_video_stats_decode()
856 stream->stats.frame.has_initial_pts = has_pts; in uvc_video_stats_decode()
858 stream->stats.frame.has_early_pts = true; in uvc_video_stats_decode()
862 if (has_scr && stream->stats.frame.nb_scr) { in uvc_video_stats_decode()
863 if (stream->stats.frame.scr_stc != scr_stc) in uvc_video_stats_decode()
864 stream->stats.frame.nb_scr_diffs++; in uvc_video_stats_decode()
869 if (stream->stats.stream.nb_frames > 0 || in uvc_video_stats_decode()
870 stream->stats.frame.nb_scr > 0) in uvc_video_stats_decode()
871 stream->stats.stream.scr_sof_count += in uvc_video_stats_decode()
872 (scr_sof - stream->stats.stream.scr_sof) % 2048; in uvc_video_stats_decode()
873 stream->stats.stream.scr_sof = scr_sof; in uvc_video_stats_decode()
875 stream->stats.frame.nb_scr++; in uvc_video_stats_decode()
876 stream->stats.frame.scr_stc = scr_stc; in uvc_video_stats_decode()
877 stream->stats.frame.scr_sof = scr_sof; in uvc_video_stats_decode()
879 if (scr_sof < stream->stats.stream.min_sof) in uvc_video_stats_decode()
880 stream->stats.stream.min_sof = scr_sof; in uvc_video_stats_decode()
881 if (scr_sof > stream->stats.stream.max_sof) in uvc_video_stats_decode()
882 stream->stats.stream.max_sof = scr_sof; in uvc_video_stats_decode()
886 if (stream->stats.frame.size == 0 && len > header_size) in uvc_video_stats_decode()
887 stream->stats.frame.first_data = stream->stats.frame.nb_packets; in uvc_video_stats_decode()
890 stream->stats.frame.size += len - header_size; in uvc_video_stats_decode()
893 stream->stats.frame.nb_packets++; in uvc_video_stats_decode()
895 stream->stats.frame.nb_empty++; in uvc_video_stats_decode()
898 stream->stats.frame.nb_errors++; in uvc_video_stats_decode()
901 static void uvc_video_stats_update(struct uvc_streaming *stream) in uvc_video_stats_update() argument
903 struct uvc_stats_frame *frame = &stream->stats.frame; in uvc_video_stats_update()
908 stream->sequence, frame->first_data, in uvc_video_stats_update()
916 stream->stats.stream.nb_frames++; in uvc_video_stats_update()
917 stream->stats.stream.nb_packets += stream->stats.frame.nb_packets; in uvc_video_stats_update()
918 stream->stats.stream.nb_empty += stream->stats.frame.nb_empty; in uvc_video_stats_update()
919 stream->stats.stream.nb_errors += stream->stats.frame.nb_errors; in uvc_video_stats_update()
920 stream->stats.stream.nb_invalid += stream->stats.frame.nb_invalid; in uvc_video_stats_update()
923 stream->stats.stream.nb_pts_early++; in uvc_video_stats_update()
925 stream->stats.stream.nb_pts_initial++; in uvc_video_stats_update()
927 stream->stats.stream.nb_pts_constant++; in uvc_video_stats_update()
929 stream->stats.stream.nb_scr_count_ok++; in uvc_video_stats_update()
931 stream->stats.stream.nb_scr_diffs_ok++; in uvc_video_stats_update()
933 memset(&stream->stats.frame, 0, sizeof(stream->stats.frame)); in uvc_video_stats_update()
936 size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf, in uvc_video_stats_dump() argument
946 duration = ktime_ms_delta(stream->stats.stream.stop_ts, in uvc_video_stats_dump()
947 stream->stats.stream.start_ts); in uvc_video_stats_dump()
949 scr_sof_freq = stream->stats.stream.scr_sof_count * 1000 in uvc_video_stats_dump()
957 stream->stats.stream.nb_frames, in uvc_video_stats_dump()
958 stream->stats.stream.nb_packets, in uvc_video_stats_dump()
959 stream->stats.stream.nb_empty, in uvc_video_stats_dump()
960 stream->stats.stream.nb_errors, in uvc_video_stats_dump()
961 stream->stats.stream.nb_invalid); in uvc_video_stats_dump()
964 stream->stats.stream.nb_pts_early, in uvc_video_stats_dump()
965 stream->stats.stream.nb_pts_initial, in uvc_video_stats_dump()
966 stream->stats.stream.nb_pts_constant); in uvc_video_stats_dump()
969 stream->stats.stream.nb_scr_count_ok, in uvc_video_stats_dump()
970 stream->stats.stream.nb_scr_diffs_ok); in uvc_video_stats_dump()
973 stream->stats.stream.min_sof, in uvc_video_stats_dump()
974 stream->stats.stream.max_sof, in uvc_video_stats_dump()
980 static void uvc_video_stats_start(struct uvc_streaming *stream) in uvc_video_stats_start() argument
982 memset(&stream->stats, 0, sizeof(stream->stats)); in uvc_video_stats_start()
983 stream->stats.stream.min_sof = 2048; in uvc_video_stats_start()
986 static void uvc_video_stats_stop(struct uvc_streaming *stream) in uvc_video_stats_stop() argument
988 stream->stats.stream.stop_ts = ktime_get(); in uvc_video_stats_stop()
1030 static int uvc_video_decode_start(struct uvc_streaming *stream, in uvc_video_decode_start() argument
1041 stream->stats.frame.nb_invalid++; in uvc_video_decode_start()
1050 if (stream->last_fid != fid) { in uvc_video_decode_start()
1051 stream->sequence++; in uvc_video_decode_start()
1052 if (stream->sequence) in uvc_video_decode_start()
1053 uvc_video_stats_update(stream); in uvc_video_decode_start()
1056 uvc_video_clock_decode(stream, buf, data, len); in uvc_video_decode_start()
1057 uvc_video_stats_decode(stream, data, len); in uvc_video_decode_start()
1063 stream->last_fid = fid; in uvc_video_decode_start()
1074 /* Synchronize to the input stream by waiting for the FID bit to be in uvc_video_decode_start()
1076 * stream->last_fid is initialized to -1, so the first isochronous in uvc_video_decode_start()
1079 * If the device doesn't toggle the FID bit, invert stream->last_fid in uvc_video_decode_start()
1083 if (fid == stream->last_fid) { in uvc_video_decode_start()
1086 if ((stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) && in uvc_video_decode_start()
1088 stream->last_fid ^= UVC_STREAM_FID; in uvc_video_decode_start()
1093 buf->buf.sequence = stream->sequence; in uvc_video_decode_start()
1107 * stream->last_fid is initialized to -1, so the first isochronous in uvc_video_decode_start()
1115 if (fid != stream->last_fid && buf->bytesused != 0) { in uvc_video_decode_start()
1122 stream->last_fid = fid; in uvc_video_decode_start()
1186 static void uvc_video_decode_end(struct uvc_streaming *stream, in uvc_video_decode_end() argument
1195 if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) in uvc_video_decode_end()
1196 stream->last_fid ^= UVC_STREAM_FID; in uvc_video_decode_end()
1211 static int uvc_video_encode_header(struct uvc_streaming *stream, in uvc_video_encode_header() argument
1216 | (stream->last_fid & UVC_STREAM_FID); in uvc_video_encode_header()
1220 static int uvc_video_encode_data(struct uvc_streaming *stream, in uvc_video_encode_data() argument
1223 struct uvc_video_queue *queue = &stream->queue; in uvc_video_encode_data()
1230 nbytes = min(stream->bulk.max_payload_size - stream->bulk.payload_size, in uvc_video_encode_data()
1254 static void uvc_video_decode_meta(struct uvc_streaming *stream, in uvc_video_decode_meta() argument
1288 if (stream->meta.format == V4L2_META_FMT_UVC) in uvc_video_decode_meta()
1292 !memcmp(scr, stream->clock.last_scr, 6))) in uvc_video_decode_meta()
1298 sof = usb_get_current_frame_number(stream->dev->udev); in uvc_video_decode_meta()
1304 memcpy(stream->clock.last_scr, scr, 6); in uvc_video_decode_meta()
1325 static void uvc_video_validate_buffer(const struct uvc_streaming *stream, in uvc_video_validate_buffer() argument
1328 if (stream->ctrl.dwMaxVideoFrameSize != buf->bytesused && in uvc_video_validate_buffer()
1329 !(stream->cur_format->flags & UVC_FMT_FLAG_COMPRESSED)) in uvc_video_validate_buffer()
1337 static void uvc_video_next_buffers(struct uvc_streaming *stream, in uvc_video_next_buffers() argument
1340 uvc_video_validate_buffer(stream, *video_buf); in uvc_video_next_buffers()
1353 *meta_buf = uvc_queue_next_buffer(&stream->meta.queue, in uvc_video_next_buffers()
1356 *video_buf = uvc_queue_next_buffer(&stream->queue, *video_buf); in uvc_video_next_buffers()
1363 struct uvc_streaming *stream = uvc_urb->stream; in uvc_video_decode_isoc() local
1380 ret = uvc_video_decode_start(stream, buf, mem, in uvc_video_decode_isoc()
1383 uvc_video_next_buffers(stream, &buf, &meta_buf); in uvc_video_decode_isoc()
1389 uvc_video_decode_meta(stream, meta_buf, mem, ret); in uvc_video_decode_isoc()
1396 uvc_video_decode_end(stream, buf, mem, in uvc_video_decode_isoc()
1400 uvc_video_next_buffers(stream, &buf, &meta_buf); in uvc_video_decode_isoc()
1408 struct uvc_streaming *stream = uvc_urb->stream; in uvc_video_decode_bulk() local
1416 if (urb->actual_length == 0 && stream->bulk.header_size == 0) in uvc_video_decode_bulk()
1421 stream->bulk.payload_size += len; in uvc_video_decode_bulk()
1426 if (stream->bulk.header_size == 0 && !stream->bulk.skip_payload) { in uvc_video_decode_bulk()
1428 ret = uvc_video_decode_start(stream, buf, mem, len); in uvc_video_decode_bulk()
1430 uvc_video_next_buffers(stream, &buf, &meta_buf); in uvc_video_decode_bulk()
1435 stream->bulk.skip_payload = 1; in uvc_video_decode_bulk()
1437 memcpy(stream->bulk.header, mem, ret); in uvc_video_decode_bulk()
1438 stream->bulk.header_size = ret; in uvc_video_decode_bulk()
1440 uvc_video_decode_meta(stream, meta_buf, mem, ret); in uvc_video_decode_bulk()
1453 if (!stream->bulk.skip_payload && buf != NULL) in uvc_video_decode_bulk()
1460 stream->bulk.payload_size >= stream->bulk.max_payload_size) { in uvc_video_decode_bulk()
1461 if (!stream->bulk.skip_payload && buf != NULL) { in uvc_video_decode_bulk()
1462 uvc_video_decode_end(stream, buf, stream->bulk.header, in uvc_video_decode_bulk()
1463 stream->bulk.payload_size); in uvc_video_decode_bulk()
1465 uvc_video_next_buffers(stream, &buf, &meta_buf); in uvc_video_decode_bulk()
1468 stream->bulk.header_size = 0; in uvc_video_decode_bulk()
1469 stream->bulk.skip_payload = 0; in uvc_video_decode_bulk()
1470 stream->bulk.payload_size = 0; in uvc_video_decode_bulk()
1478 struct uvc_streaming *stream = uvc_urb->stream; in uvc_video_encode_bulk() local
1481 int len = stream->urb_size, ret; in uvc_video_encode_bulk()
1489 if (stream->bulk.header_size == 0) { in uvc_video_encode_bulk()
1490 ret = uvc_video_encode_header(stream, buf, mem, len); in uvc_video_encode_bulk()
1491 stream->bulk.header_size = ret; in uvc_video_encode_bulk()
1492 stream->bulk.payload_size += ret; in uvc_video_encode_bulk()
1498 ret = uvc_video_encode_data(stream, buf, mem, len); in uvc_video_encode_bulk()
1500 stream->bulk.payload_size += ret; in uvc_video_encode_bulk()
1503 if (buf->bytesused == stream->queue.buf_used || in uvc_video_encode_bulk()
1504 stream->bulk.payload_size == stream->bulk.max_payload_size) { in uvc_video_encode_bulk()
1505 if (buf->bytesused == stream->queue.buf_used) { in uvc_video_encode_bulk()
1506 stream->queue.buf_used = 0; in uvc_video_encode_bulk()
1508 buf->buf.sequence = ++stream->sequence; in uvc_video_encode_bulk()
1509 uvc_queue_next_buffer(&stream->queue, buf); in uvc_video_encode_bulk()
1510 stream->last_fid ^= UVC_STREAM_FID; in uvc_video_encode_bulk()
1513 stream->bulk.header_size = 0; in uvc_video_encode_bulk()
1514 stream->bulk.payload_size = 0; in uvc_video_encode_bulk()
1517 urb->transfer_buffer_length = stream->urb_size - len; in uvc_video_encode_bulk()
1523 struct uvc_streaming *stream = uvc_urb->stream; in uvc_video_complete() local
1524 struct uvc_video_queue *queue = &stream->queue; in uvc_video_complete()
1525 struct uvc_video_queue *qmeta = &stream->meta.queue; in uvc_video_complete()
1526 struct vb2_queue *vb2_qmeta = stream->meta.vdev.queue; in uvc_video_complete()
1541 if (stream->frozen) in uvc_video_complete()
1569 stream->decode(uvc_urb, buf, buf_meta); in uvc_video_complete()
1581 queue_work(stream->async_wq, &uvc_urb->work); in uvc_video_complete()
1587 static void uvc_free_urb_buffers(struct uvc_streaming *stream) in uvc_free_urb_buffers() argument
1591 for_each_uvc_urb(uvc_urb, stream) { in uvc_free_urb_buffers()
1596 usb_free_coherent(stream->dev->udev, stream->urb_size, in uvc_free_urb_buffers()
1604 stream->urb_size = 0; in uvc_free_urb_buffers()
1618 static int uvc_alloc_urb_buffers(struct uvc_streaming *stream, in uvc_alloc_urb_buffers() argument
1625 if (stream->urb_size) in uvc_alloc_urb_buffers()
1626 return stream->urb_size / psize; in uvc_alloc_urb_buffers()
1638 struct uvc_urb *uvc_urb = &stream->uvc_urb[i]; in uvc_alloc_urb_buffers()
1640 stream->urb_size = psize * npackets; in uvc_alloc_urb_buffers()
1643 stream->dev->udev, stream->urb_size, in uvc_alloc_urb_buffers()
1647 kmalloc(stream->urb_size, gfp_flags | __GFP_NOWARN); in uvc_alloc_urb_buffers()
1650 uvc_free_urb_buffers(stream); in uvc_alloc_urb_buffers()
1654 uvc_urb->stream = stream; in uvc_alloc_urb_buffers()
1673 static void uvc_video_stop_transfer(struct uvc_streaming *stream, in uvc_video_stop_transfer() argument
1678 uvc_video_stats_stop(stream); in uvc_video_stop_transfer()
1685 for_each_uvc_urb(uvc_urb, stream) in uvc_video_stop_transfer()
1688 flush_workqueue(stream->async_wq); in uvc_video_stop_transfer()
1690 for_each_uvc_urb(uvc_urb, stream) { in uvc_video_stop_transfer()
1696 uvc_free_urb_buffers(stream); in uvc_video_stop_transfer()
1729 static int uvc_init_video_isoc(struct uvc_streaming *stream, in uvc_init_video_isoc() argument
1738 psize = uvc_endpoint_max_bpi(stream->dev->udev, ep); in uvc_init_video_isoc()
1739 size = stream->ctrl.dwMaxVideoFrameSize; in uvc_init_video_isoc()
1741 npackets = uvc_alloc_urb_buffers(stream, size, psize, gfp_flags); in uvc_init_video_isoc()
1747 for_each_uvc_urb(uvc_urb, stream) { in uvc_init_video_isoc()
1750 uvc_video_stop_transfer(stream, 1); in uvc_init_video_isoc()
1754 urb->dev = stream->dev->udev; in uvc_init_video_isoc()
1756 urb->pipe = usb_rcvisocpipe(stream->dev->udev, in uvc_init_video_isoc()
1785 static int uvc_init_video_bulk(struct uvc_streaming *stream, in uvc_init_video_bulk() argument
1795 size = stream->ctrl.dwMaxPayloadTransferSize; in uvc_init_video_bulk()
1796 stream->bulk.max_payload_size = size; in uvc_init_video_bulk()
1798 npackets = uvc_alloc_urb_buffers(stream, size, psize, gfp_flags); in uvc_init_video_bulk()
1805 pipe = usb_rcvbulkpipe(stream->dev->udev, in uvc_init_video_bulk()
1808 pipe = usb_sndbulkpipe(stream->dev->udev, in uvc_init_video_bulk()
1811 if (stream->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) in uvc_init_video_bulk()
1814 for_each_uvc_urb(uvc_urb, stream) { in uvc_init_video_bulk()
1817 uvc_video_stop_transfer(stream, 1); in uvc_init_video_bulk()
1821 usb_fill_bulk_urb(urb, stream->dev->udev, pipe, uvc_urb->buffer, in uvc_init_video_bulk()
1837 static int uvc_video_start_transfer(struct uvc_streaming *stream, in uvc_video_start_transfer() argument
1840 struct usb_interface *intf = stream->intf; in uvc_video_start_transfer()
1846 stream->sequence = -1; in uvc_video_start_transfer()
1847 stream->last_fid = -1; in uvc_video_start_transfer()
1848 stream->bulk.header_size = 0; in uvc_video_start_transfer()
1849 stream->bulk.skip_payload = 0; in uvc_video_start_transfer()
1850 stream->bulk.payload_size = 0; in uvc_video_start_transfer()
1852 uvc_video_stats_start(stream); in uvc_video_start_transfer()
1859 int intfnum = stream->intfnum; in uvc_video_start_transfer()
1862 bandwidth = stream->ctrl.dwMaxPayloadTransferSize; in uvc_video_start_transfer()
1879 stream->header.bEndpointAddress); in uvc_video_start_transfer()
1884 psize = uvc_endpoint_max_bpi(stream->dev->udev, ep); in uvc_video_start_transfer()
1901 ret = usb_set_interface(stream->dev->udev, intfnum, altsetting); in uvc_video_start_transfer()
1905 ret = uvc_init_video_isoc(stream, best_ep, gfp_flags); in uvc_video_start_transfer()
1909 stream->header.bEndpointAddress); in uvc_video_start_transfer()
1913 ret = uvc_init_video_bulk(stream, ep, gfp_flags); in uvc_video_start_transfer()
1920 for_each_uvc_urb(uvc_urb, stream) { in uvc_video_start_transfer()
1925 uvc_video_stop_transfer(stream, 1); in uvc_video_start_transfer()
1933 if (stream->dev->quirks & UVC_QUIRK_RESTORE_CTRLS_ON_INIT) in uvc_video_start_transfer()
1934 uvc_ctrl_restore_values(stream->dev); in uvc_video_start_transfer()
1950 int uvc_video_suspend(struct uvc_streaming *stream) in uvc_video_suspend() argument
1952 if (!uvc_queue_streaming(&stream->queue)) in uvc_video_suspend()
1955 stream->frozen = 1; in uvc_video_suspend()
1956 uvc_video_stop_transfer(stream, 0); in uvc_video_suspend()
1957 usb_set_interface(stream->dev->udev, stream->intfnum, 0); in uvc_video_suspend()
1969 int uvc_video_resume(struct uvc_streaming *stream, int reset) in uvc_video_resume() argument
1979 usb_set_interface(stream->dev->udev, stream->intfnum, 0); in uvc_video_resume()
1981 stream->frozen = 0; in uvc_video_resume()
1983 uvc_video_clock_reset(stream); in uvc_video_resume()
1985 if (!uvc_queue_streaming(&stream->queue)) in uvc_video_resume()
1988 ret = uvc_commit_video(stream, &stream->ctrl); in uvc_video_resume()
1992 return uvc_video_start_transfer(stream, GFP_NOIO); in uvc_video_resume()
2009 int uvc_video_init(struct uvc_streaming *stream) in uvc_video_init() argument
2011 struct uvc_streaming_control *probe = &stream->ctrl; in uvc_video_init()
2018 if (stream->nformats == 0) { in uvc_video_init()
2023 atomic_set(&stream->active, 0); in uvc_video_init()
2030 usb_set_interface(stream->dev->udev, stream->intfnum, 0); in uvc_video_init()
2037 if (uvc_get_video_ctrl(stream, probe, 1, UVC_GET_DEF) == 0) in uvc_video_init()
2038 uvc_set_video_ctrl(stream, probe, 1); in uvc_video_init()
2045 ret = uvc_get_video_ctrl(stream, probe, 1, UVC_GET_CUR); in uvc_video_init()
2052 for (i = stream->nformats; i > 0; --i) { in uvc_video_init()
2053 format = &stream->format[i-1]; in uvc_video_init()
2064 /* Zero bFrameIndex might be correct. Stream-based formats (including in uvc_video_init()
2078 stream->def_format = format; in uvc_video_init()
2079 stream->cur_format = format; in uvc_video_init()
2080 stream->cur_frame = frame; in uvc_video_init()
2083 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { in uvc_video_init()
2084 if (stream->dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT) in uvc_video_init()
2085 stream->decode = uvc_video_decode_isight; in uvc_video_init()
2086 else if (stream->intf->num_altsetting > 1) in uvc_video_init()
2087 stream->decode = uvc_video_decode_isoc; in uvc_video_init()
2089 stream->decode = uvc_video_decode_bulk; in uvc_video_init()
2091 if (stream->intf->num_altsetting == 1) in uvc_video_init()
2092 stream->decode = uvc_video_encode_bulk; in uvc_video_init()
2101 for_each_uvc_urb(uvc_urb, stream) in uvc_video_init()
2107 int uvc_video_start_streaming(struct uvc_streaming *stream) in uvc_video_start_streaming() argument
2111 ret = uvc_video_clock_init(stream); in uvc_video_start_streaming()
2116 ret = uvc_commit_video(stream, &stream->ctrl); in uvc_video_start_streaming()
2120 ret = uvc_video_start_transfer(stream, GFP_KERNEL); in uvc_video_start_streaming()
2127 usb_set_interface(stream->dev->udev, stream->intfnum, 0); in uvc_video_start_streaming()
2129 uvc_video_clock_cleanup(stream); in uvc_video_start_streaming()
2134 void uvc_video_stop_streaming(struct uvc_streaming *stream) in uvc_video_stop_streaming() argument
2136 uvc_video_stop_transfer(stream, 1); in uvc_video_stop_streaming()
2138 if (stream->intf->num_altsetting > 1) { in uvc_video_stop_streaming()
2139 usb_set_interface(stream->dev->udev, stream->intfnum, 0); in uvc_video_stop_streaming()
2142 * when the video stream is stopped. Windows sends a in uvc_video_stop_streaming()
2146 unsigned int epnum = stream->header.bEndpointAddress in uvc_video_stop_streaming()
2148 unsigned int dir = stream->header.bEndpointAddress in uvc_video_stop_streaming()
2152 pipe = usb_sndbulkpipe(stream->dev->udev, epnum) | dir; in uvc_video_stop_streaming()
2153 usb_clear_halt(stream->dev->udev, pipe); in uvc_video_stop_streaming()
2156 uvc_video_clock_cleanup(stream); in uvc_video_stop_streaming()