1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * cx18 init/start/stop/exit stream functions 4 * 5 * Derived from ivtv-streams.h 6 * 7 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> 8 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> 9 */ 10 11 u32 cx18_find_handle(struct cx18 *cx); 12 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle); 13 int cx18_streams_setup(struct cx18 *cx); 14 int cx18_streams_register(struct cx18 *cx); 15 void cx18_streams_cleanup(struct cx18 *cx, int unregister); 16 17 #define CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN (3) 18 void cx18_stream_rotate_idx_mdls(struct cx18 *cx); 19 20 static inline bool cx18_stream_enabled(struct cx18_stream *s) 21 { 22 return s->video_dev.v4l2_dev || 23 (s->dvb && s->dvb->enabled) || 24 (s->type == CX18_ENC_STREAM_TYPE_IDX && 25 s->cx->stream_buffers[CX18_ENC_STREAM_TYPE_IDX] != 0); 26 } 27 28 /* Related to submission of mdls to firmware */ 29 static inline void cx18_stream_load_fw_queue(struct cx18_stream *s) 30 { 31 schedule_work(&s->out_work_order); 32 } 33 34 static inline void cx18_stream_put_mdl_fw(struct cx18_stream *s, 35 struct cx18_mdl *mdl) 36 { 37 /* Put mdl on q_free; the out work handler will move mdl(s) to q_busy */ 38 cx18_enqueue(s, mdl, &s->q_free); 39 cx18_stream_load_fw_queue(s); 40 } 41 42 void cx18_out_work_handler(struct work_struct *work); 43 44 /* Capture related */ 45 int cx18_start_v4l2_encode_stream(struct cx18_stream *s); 46 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end); 47 48 void cx18_stop_all_captures(struct cx18 *cx); 49