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7f98639d PO |
1 | /* |
2 | * Memory-to-memory device framework for Video for Linux 2. | |
3 | * | |
4 | * Helper functions for devices that use memory buffers for both source | |
5 | * and destination. | |
6 | * | |
7 | * Copyright (c) 2009 Samsung Electronics Co., Ltd. | |
95072084 | 8 | * Pawel Osciak, <pawel@osciak.com> |
7f98639d PO |
9 | * Marek Szyprowski, <m.szyprowski@samsung.com> |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the | |
14 | * License, or (at your option) any later version | |
15 | */ | |
16 | ||
17 | #ifndef _MEDIA_V4L2_MEM2MEM_H | |
18 | #define _MEDIA_V4L2_MEM2MEM_H | |
19 | ||
c139990e | 20 | #include <media/videobuf2-v4l2.h> |
7f98639d PO |
21 | |
22 | /** | |
23 | * struct v4l2_m2m_ops - mem-to-mem device driver callbacks | |
24 | * @device_run: required. Begin the actual job (transaction) inside this | |
25 | * callback. | |
26 | * The job does NOT have to end before this callback returns | |
27 | * (and it will be the usual case). When the job finishes, | |
28 | * v4l2_m2m_job_finish() has to be called. | |
29 | * @job_ready: optional. Should return 0 if the driver does not have a job | |
30 | * fully prepared to run yet (i.e. it will not be able to finish a | |
31 | * transaction without sleeping). If not provided, it will be | |
32 | * assumed that one source and one destination buffer are all | |
33 | * that is required for the driver to perform one full transaction. | |
34 | * This method may not sleep. | |
35 | * @job_abort: required. Informs the driver that it has to abort the currently | |
36 | * running transaction as soon as possible (i.e. as soon as it can | |
37 | * stop the device safely; e.g. in the next interrupt handler), | |
38 | * even if the transaction would not have been finished by then. | |
39 | * After the driver performs the necessary steps, it has to call | |
40 | * v4l2_m2m_job_finish() (as if the transaction ended normally). | |
41 | * This function does not have to (and will usually not) wait | |
42 | * until the device enters a state when it can be stopped. | |
62c0d016 MCC |
43 | * @lock: optional. Define a driver's own lock callback, instead of using |
44 | * m2m_ctx->q_lock. | |
45 | * @unlock: optional. Define a driver's own unlock callback, instead of | |
46 | * using m2m_ctx->q_lock. | |
7f98639d PO |
47 | */ |
48 | struct v4l2_m2m_ops { | |
49 | void (*device_run)(void *priv); | |
50 | int (*job_ready)(void *priv); | |
51 | void (*job_abort)(void *priv); | |
908a0d7c MS |
52 | void (*lock)(void *priv); |
53 | void (*unlock)(void *priv); | |
7f98639d PO |
54 | }; |
55 | ||
56 | struct v4l2_m2m_dev; | |
57 | ||
58 | struct v4l2_m2m_queue_ctx { | |
59 | /* private: internal use only */ | |
908a0d7c | 60 | struct vb2_queue q; |
7f98639d PO |
61 | |
62 | /* Queue for buffers ready to be processed as soon as this | |
63 | * instance receives access to the device */ | |
64 | struct list_head rdy_queue; | |
908a0d7c | 65 | spinlock_t rdy_spinlock; |
7f98639d | 66 | u8 num_rdy; |
33bdd5a8 | 67 | bool buffered; |
7f98639d PO |
68 | }; |
69 | ||
70 | struct v4l2_m2m_ctx { | |
8e6e8f93 SN |
71 | /* optional cap/out vb2 queues lock */ |
72 | struct mutex *q_lock; | |
73 | ||
7f98639d PO |
74 | /* private: internal use only */ |
75 | struct v4l2_m2m_dev *m2m_dev; | |
76 | ||
77 | /* Capture (output to memory) queue context */ | |
78 | struct v4l2_m2m_queue_ctx cap_q_ctx; | |
79 | ||
80 | /* Output (input from memory) queue context */ | |
81 | struct v4l2_m2m_queue_ctx out_q_ctx; | |
82 | ||
83 | /* For device job queue */ | |
84 | struct list_head queue; | |
85 | unsigned long job_flags; | |
908a0d7c | 86 | wait_queue_head_t finished; |
7f98639d PO |
87 | |
88 | /* Instance private data */ | |
89 | void *priv; | |
90 | }; | |
91 | ||
908a0d7c | 92 | struct v4l2_m2m_buffer { |
2d700715 | 93 | struct vb2_v4l2_buffer vb; |
908a0d7c MS |
94 | struct list_head list; |
95 | }; | |
96 | ||
4781646c MCC |
97 | /** |
98 | * v4l2_m2m_get_curr_priv() - return driver private data for the currently | |
99 | * running instance or NULL if no instance is running | |
dcbd8735 MCC |
100 | * |
101 | * @m2m_dev: pointer to struct &v4l2_m2m_dev | |
4781646c | 102 | */ |
7f98639d PO |
103 | void *v4l2_m2m_get_curr_priv(struct v4l2_m2m_dev *m2m_dev); |
104 | ||
4781646c MCC |
105 | /** |
106 | * v4l2_m2m_get_vq() - return vb2_queue for the given type | |
dcbd8735 MCC |
107 | * |
108 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
109 | * @type: type of the V4L2 buffer, as defined by enum &v4l2_buf_type | |
4781646c | 110 | */ |
908a0d7c | 111 | struct vb2_queue *v4l2_m2m_get_vq(struct v4l2_m2m_ctx *m2m_ctx, |
7f98639d PO |
112 | enum v4l2_buf_type type); |
113 | ||
4781646c MCC |
114 | /** |
115 | * v4l2_m2m_try_schedule() - check whether an instance is ready to be added to | |
116 | * the pending job queue and add it if so. | |
dcbd8735 MCC |
117 | * |
118 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
4781646c MCC |
119 | * |
120 | * There are three basic requirements an instance has to meet to be able to run: | |
121 | * 1) at least one source buffer has to be queued, | |
122 | * 2) at least one destination buffer has to be queued, | |
123 | * 3) streaming has to be on. | |
124 | * | |
125 | * If a queue is buffered (for example a decoder hardware ringbuffer that has | |
126 | * to be drained before doing streamoff), allow scheduling without v4l2 buffers | |
127 | * on that queue. | |
128 | * | |
129 | * There may also be additional, custom requirements. In such case the driver | |
130 | * should supply a custom callback (job_ready in v4l2_m2m_ops) that should | |
131 | * return 1 if the instance is ready. | |
132 | * An example of the above could be an instance that requires more than one | |
133 | * src/dst buffer per transaction. | |
134 | */ | |
1190a419 MO |
135 | void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx); |
136 | ||
4781646c MCC |
137 | /** |
138 | * v4l2_m2m_job_finish() - inform the framework that a job has been finished | |
139 | * and have it clean up | |
140 | * | |
dcbd8735 MCC |
141 | * @m2m_dev: pointer to struct &v4l2_m2m_dev |
142 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
143 | * | |
4781646c MCC |
144 | * Called by a driver to yield back the device after it has finished with it. |
145 | * Should be called as soon as possible after reaching a state which allows | |
146 | * other instances to take control of the device. | |
147 | * | |
148 | * This function has to be called only after device_run() callback has been | |
149 | * called on the driver. To prevent recursion, it should not be called directly | |
150 | * from the device_run() callback though. | |
151 | */ | |
7f98639d PO |
152 | void v4l2_m2m_job_finish(struct v4l2_m2m_dev *m2m_dev, |
153 | struct v4l2_m2m_ctx *m2m_ctx); | |
154 | ||
908a0d7c | 155 | static inline void |
2d700715 | 156 | v4l2_m2m_buf_done(struct vb2_v4l2_buffer *buf, enum vb2_buffer_state state) |
908a0d7c | 157 | { |
2d700715 | 158 | vb2_buffer_done(&buf->vb2_buf, state); |
908a0d7c MS |
159 | } |
160 | ||
4781646c MCC |
161 | /** |
162 | * v4l2_m2m_reqbufs() - multi-queue-aware REQBUFS multiplexer | |
dcbd8735 MCC |
163 | * |
164 | * @file: pointer to struct &file | |
165 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
166 | * @reqbufs: pointer to struct &v4l2_requestbuffers | |
4781646c | 167 | */ |
7f98639d PO |
168 | int v4l2_m2m_reqbufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
169 | struct v4l2_requestbuffers *reqbufs); | |
170 | ||
4781646c MCC |
171 | /** |
172 | * v4l2_m2m_querybuf() - multi-queue-aware QUERYBUF multiplexer | |
173 | * | |
dcbd8735 MCC |
174 | * @file: pointer to struct &file |
175 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
176 | * @buf: pointer to struct &v4l2_buffer | |
177 | * | |
4781646c MCC |
178 | * See v4l2_m2m_mmap() documentation for details. |
179 | */ | |
7f98639d PO |
180 | int v4l2_m2m_querybuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
181 | struct v4l2_buffer *buf); | |
182 | ||
4781646c MCC |
183 | /** |
184 | * v4l2_m2m_qbuf() - enqueue a source or destination buffer, depending on | |
185 | * the type | |
dcbd8735 MCC |
186 | * |
187 | * @file: pointer to struct &file | |
188 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
189 | * @buf: pointer to struct &v4l2_buffer | |
4781646c | 190 | */ |
7f98639d PO |
191 | int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
192 | struct v4l2_buffer *buf); | |
4781646c MCC |
193 | |
194 | /** | |
195 | * v4l2_m2m_dqbuf() - dequeue a source or destination buffer, depending on | |
196 | * the type | |
dcbd8735 MCC |
197 | * |
198 | * @file: pointer to struct &file | |
199 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
200 | * @buf: pointer to struct &v4l2_buffer | |
4781646c | 201 | */ |
7f98639d PO |
202 | int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
203 | struct v4l2_buffer *buf); | |
4781646c MCC |
204 | |
205 | /** | |
206 | * v4l2_m2m_prepare_buf() - prepare a source or destination buffer, depending on | |
207 | * the type | |
dcbd8735 MCC |
208 | * |
209 | * @file: pointer to struct &file | |
210 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
211 | * @buf: pointer to struct &v4l2_buffer | |
4781646c | 212 | */ |
e68cf471 HV |
213 | int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
214 | struct v4l2_buffer *buf); | |
4781646c MCC |
215 | |
216 | /** | |
217 | * v4l2_m2m_create_bufs() - create a source or destination buffer, depending | |
218 | * on the type | |
dcbd8735 MCC |
219 | * |
220 | * @file: pointer to struct &file | |
221 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
222 | * @create: pointer to struct &v4l2_create_buffers | |
4781646c | 223 | */ |
8b94ca61 PZ |
224 | int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
225 | struct v4l2_create_buffers *create); | |
7f98639d | 226 | |
4781646c MCC |
227 | /** |
228 | * v4l2_m2m_expbuf() - export a source or destination buffer, depending on | |
229 | * the type | |
dcbd8735 MCC |
230 | * |
231 | * @file: pointer to struct &file | |
232 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
233 | * @eb: pointer to struct &v4l2_exportbuffer | |
4781646c | 234 | */ |
83ae7c5a TS |
235 | int v4l2_m2m_expbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
236 | struct v4l2_exportbuffer *eb); | |
237 | ||
4781646c MCC |
238 | /** |
239 | * v4l2_m2m_streamon() - turn on streaming for a video queue | |
dcbd8735 MCC |
240 | * |
241 | * @file: pointer to struct &file | |
242 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
243 | * @type: type of the V4L2 buffer, as defined by enum &v4l2_buf_type | |
4781646c | 244 | */ |
7f98639d PO |
245 | int v4l2_m2m_streamon(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
246 | enum v4l2_buf_type type); | |
4781646c MCC |
247 | |
248 | /** | |
249 | * v4l2_m2m_streamoff() - turn off streaming for a video queue | |
dcbd8735 MCC |
250 | * |
251 | * @file: pointer to struct &file | |
252 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
253 | * @type: type of the V4L2 buffer, as defined by enum &v4l2_buf_type | |
4781646c | 254 | */ |
7f98639d PO |
255 | int v4l2_m2m_streamoff(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
256 | enum v4l2_buf_type type); | |
257 | ||
4781646c MCC |
258 | /** |
259 | * v4l2_m2m_poll() - poll replacement, for destination buffers only | |
260 | * | |
dcbd8735 MCC |
261 | * @file: pointer to struct &file |
262 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
263 | * @wait: pointer to struct &poll_table_struct | |
264 | * | |
4781646c MCC |
265 | * Call from the driver's poll() function. Will poll both queues. If a buffer |
266 | * is available to dequeue (with dqbuf) from the source queue, this will | |
267 | * indicate that a non-blocking write can be performed, while read will be | |
268 | * returned in case of the destination queue. | |
269 | */ | |
7f98639d PO |
270 | unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
271 | struct poll_table_struct *wait); | |
272 | ||
4781646c MCC |
273 | /** |
274 | * v4l2_m2m_mmap() - source and destination queues-aware mmap multiplexer | |
275 | * | |
dcbd8735 MCC |
276 | * @file: pointer to struct &file |
277 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx | |
278 | * @vma: pointer to struct &vm_area_struct | |
279 | * | |
4781646c MCC |
280 | * Call from driver's mmap() function. Will handle mmap() for both queues |
281 | * seamlessly for videobuffer, which will receive normal per-queue offsets and | |
282 | * proper videobuf queue pointers. The differentiation is made outside videobuf | |
283 | * by adding a predefined offset to buffers from one of the queues and | |
284 | * subtracting it before passing it back to videobuf. Only drivers (and | |
285 | * thus applications) receive modified offsets. | |
286 | */ | |
7f98639d PO |
287 | int v4l2_m2m_mmap(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, |
288 | struct vm_area_struct *vma); | |
289 | ||
4781646c MCC |
290 | /** |
291 | * v4l2_m2m_init() - initialize per-driver m2m data | |
292 | * | |
dcbd8735 MCC |
293 | * @m2m_ops: pointer to struct v4l2_m2m_ops |
294 | * | |
4781646c MCC |
295 | * Usually called from driver's probe() function. |
296 | */ | |
b1252eb8 | 297 | struct v4l2_m2m_dev *v4l2_m2m_init(const struct v4l2_m2m_ops *m2m_ops); |
4781646c MCC |
298 | |
299 | /** | |
300 | * v4l2_m2m_release() - cleans up and frees a m2m_dev structure | |
301 | * | |
dcbd8735 MCC |
302 | * @m2m_dev: pointer to struct &v4l2_m2m_dev |
303 | * | |
4781646c MCC |
304 | * Usually called from driver's remove() function. |
305 | */ | |
7f98639d PO |
306 | void v4l2_m2m_release(struct v4l2_m2m_dev *m2m_dev); |
307 | ||
4781646c MCC |
308 | /** |
309 | * v4l2_m2m_ctx_init() - allocate and initialize a m2m context | |
dcbd8735 MCC |
310 | * |
311 | * @m2m_dev: a previously initialized m2m_dev struct | |
312 | * @drv_priv: driver's instance private data | |
313 | * @queue_init: a callback for queue type-specific initialization function | |
314 | * to be used for initializing videobuf_queues | |
4781646c MCC |
315 | * |
316 | * Usually called from driver's open() function. | |
317 | */ | |
908a0d7c MS |
318 | struct v4l2_m2m_ctx *v4l2_m2m_ctx_init(struct v4l2_m2m_dev *m2m_dev, |
319 | void *drv_priv, | |
320 | int (*queue_init)(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)); | |
321 | ||
33bdd5a8 PZ |
322 | static inline void v4l2_m2m_set_src_buffered(struct v4l2_m2m_ctx *m2m_ctx, |
323 | bool buffered) | |
324 | { | |
325 | m2m_ctx->out_q_ctx.buffered = buffered; | |
326 | } | |
327 | ||
328 | static inline void v4l2_m2m_set_dst_buffered(struct v4l2_m2m_ctx *m2m_ctx, | |
329 | bool buffered) | |
330 | { | |
331 | m2m_ctx->cap_q_ctx.buffered = buffered; | |
332 | } | |
333 | ||
4781646c MCC |
334 | /** |
335 | * v4l2_m2m_ctx_release() - release m2m context | |
336 | * | |
dcbd8735 MCC |
337 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
338 | * | |
4781646c MCC |
339 | * Usually called from driver's release() function. |
340 | */ | |
7f98639d PO |
341 | void v4l2_m2m_ctx_release(struct v4l2_m2m_ctx *m2m_ctx); |
342 | ||
4781646c MCC |
343 | /** |
344 | * v4l2_m2m_buf_queue() - add a buffer to the proper ready buffers list. | |
345 | * | |
dcbd8735 MCC |
346 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
347 | * @vbuf: pointer to struct &vb2_v4l2_buffer | |
348 | * | |
4781646c MCC |
349 | * Call from buf_queue(), videobuf_queue_ops callback. |
350 | */ | |
2d700715 JS |
351 | void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx, |
352 | struct vb2_v4l2_buffer *vbuf); | |
7f98639d PO |
353 | |
354 | /** | |
355 | * v4l2_m2m_num_src_bufs_ready() - return the number of source buffers ready for | |
356 | * use | |
62c0d016 | 357 | * |
dcbd8735 | 358 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
359 | */ |
360 | static inline | |
361 | unsigned int v4l2_m2m_num_src_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx) | |
362 | { | |
961ae449 | 363 | return m2m_ctx->out_q_ctx.num_rdy; |
7f98639d PO |
364 | } |
365 | ||
366 | /** | |
367 | * v4l2_m2m_num_src_bufs_ready() - return the number of destination buffers | |
368 | * ready for use | |
62c0d016 | 369 | * |
dcbd8735 | 370 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
371 | */ |
372 | static inline | |
373 | unsigned int v4l2_m2m_num_dst_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx) | |
374 | { | |
961ae449 | 375 | return m2m_ctx->cap_q_ctx.num_rdy; |
7f98639d PO |
376 | } |
377 | ||
4781646c MCC |
378 | /** |
379 | * v4l2_m2m_next_buf() - return next buffer from the list of ready buffers | |
dcbd8735 MCC |
380 | * |
381 | * @q_ctx: pointer to struct @v4l2_m2m_queue_ctx | |
4781646c | 382 | */ |
908a0d7c | 383 | void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx); |
7f98639d PO |
384 | |
385 | /** | |
386 | * v4l2_m2m_next_src_buf() - return next source buffer from the list of ready | |
387 | * buffers | |
62c0d016 | 388 | * |
dcbd8735 | 389 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
390 | */ |
391 | static inline void *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx) | |
392 | { | |
908a0d7c | 393 | return v4l2_m2m_next_buf(&m2m_ctx->out_q_ctx); |
7f98639d PO |
394 | } |
395 | ||
396 | /** | |
397 | * v4l2_m2m_next_dst_buf() - return next destination buffer from the list of | |
398 | * ready buffers | |
62c0d016 | 399 | * |
dcbd8735 | 400 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
401 | */ |
402 | static inline void *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx) | |
403 | { | |
908a0d7c | 404 | return v4l2_m2m_next_buf(&m2m_ctx->cap_q_ctx); |
7f98639d PO |
405 | } |
406 | ||
407 | /** | |
908a0d7c | 408 | * v4l2_m2m_get_src_vq() - return vb2_queue for source buffers |
62c0d016 | 409 | * |
dcbd8735 | 410 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
411 | */ |
412 | static inline | |
908a0d7c | 413 | struct vb2_queue *v4l2_m2m_get_src_vq(struct v4l2_m2m_ctx *m2m_ctx) |
7f98639d | 414 | { |
908a0d7c | 415 | return &m2m_ctx->out_q_ctx.q; |
7f98639d PO |
416 | } |
417 | ||
418 | /** | |
908a0d7c | 419 | * v4l2_m2m_get_dst_vq() - return vb2_queue for destination buffers |
62c0d016 | 420 | * |
dcbd8735 | 421 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
422 | */ |
423 | static inline | |
908a0d7c | 424 | struct vb2_queue *v4l2_m2m_get_dst_vq(struct v4l2_m2m_ctx *m2m_ctx) |
7f98639d | 425 | { |
908a0d7c | 426 | return &m2m_ctx->cap_q_ctx.q; |
7f98639d PO |
427 | } |
428 | ||
4781646c MCC |
429 | /** |
430 | * v4l2_m2m_buf_remove() - take off a buffer from the list of ready buffers and | |
431 | * return it | |
dcbd8735 MCC |
432 | * |
433 | * @q_ctx: pointer to struct @v4l2_m2m_queue_ctx | |
4781646c | 434 | */ |
908a0d7c | 435 | void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx); |
7f98639d PO |
436 | |
437 | /** | |
438 | * v4l2_m2m_src_buf_remove() - take off a source buffer from the list of ready | |
439 | * buffers and return it | |
62c0d016 | 440 | * |
dcbd8735 | 441 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
442 | */ |
443 | static inline void *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx) | |
444 | { | |
908a0d7c | 445 | return v4l2_m2m_buf_remove(&m2m_ctx->out_q_ctx); |
7f98639d PO |
446 | } |
447 | ||
448 | /** | |
449 | * v4l2_m2m_dst_buf_remove() - take off a destination buffer from the list of | |
450 | * ready buffers and return it | |
62c0d016 | 451 | * |
dcbd8735 | 452 | * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx |
7f98639d PO |
453 | */ |
454 | static inline void *v4l2_m2m_dst_buf_remove(struct v4l2_m2m_ctx *m2m_ctx) | |
455 | { | |
908a0d7c | 456 | return v4l2_m2m_buf_remove(&m2m_ctx->cap_q_ctx); |
7f98639d PO |
457 | } |
458 | ||
8e6e8f93 SN |
459 | /* v4l2 ioctl helpers */ |
460 | ||
461 | int v4l2_m2m_ioctl_reqbufs(struct file *file, void *priv, | |
462 | struct v4l2_requestbuffers *rb); | |
463 | int v4l2_m2m_ioctl_create_bufs(struct file *file, void *fh, | |
464 | struct v4l2_create_buffers *create); | |
465 | int v4l2_m2m_ioctl_querybuf(struct file *file, void *fh, | |
466 | struct v4l2_buffer *buf); | |
467 | int v4l2_m2m_ioctl_expbuf(struct file *file, void *fh, | |
468 | struct v4l2_exportbuffer *eb); | |
469 | int v4l2_m2m_ioctl_qbuf(struct file *file, void *fh, | |
470 | struct v4l2_buffer *buf); | |
471 | int v4l2_m2m_ioctl_dqbuf(struct file *file, void *fh, | |
472 | struct v4l2_buffer *buf); | |
e68cf471 HV |
473 | int v4l2_m2m_ioctl_prepare_buf(struct file *file, void *fh, |
474 | struct v4l2_buffer *buf); | |
8e6e8f93 SN |
475 | int v4l2_m2m_ioctl_streamon(struct file *file, void *fh, |
476 | enum v4l2_buf_type type); | |
477 | int v4l2_m2m_ioctl_streamoff(struct file *file, void *fh, | |
478 | enum v4l2_buf_type type); | |
479 | int v4l2_m2m_fop_mmap(struct file *file, struct vm_area_struct *vma); | |
480 | unsigned int v4l2_m2m_fop_poll(struct file *file, poll_table *wait); | |
481 | ||
7f98639d PO |
482 | #endif /* _MEDIA_V4L2_MEM2MEM_H */ |
483 |