Commit | Line | Data |
---|---|---|
89923e41 AK |
1 | /* |
2 | * This file is part of Libav. | |
3 | * | |
4 | * Libav is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Libav is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU Lesser General Public | |
15 | * License along with Libav; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | ||
19 | #include "config.h" | |
20 | ||
21 | #include "buffer.h" | |
22 | #include "common.h" | |
23 | #include "hwcontext.h" | |
24 | #include "hwcontext_internal.h" | |
25 | #include "imgutils.h" | |
26 | #include "log.h" | |
27 | #include "mem.h" | |
28 | #include "pixdesc.h" | |
29 | #include "pixfmt.h" | |
30 | ||
fd9212f2 | 31 | static const HWContextType * const hw_table[] = { |
ad884d10 AK |
32 | #if CONFIG_CUDA |
33 | &ff_hwcontext_type_cuda, | |
34 | #endif | |
c46db38c AK |
35 | #if CONFIG_DXVA2 |
36 | &ff_hwcontext_type_dxva2, | |
37 | #endif | |
59e7361c AK |
38 | #if CONFIG_LIBMFX |
39 | &ff_hwcontext_type_qsv, | |
40 | #endif | |
551c6775 MT |
41 | #if CONFIG_VAAPI |
42 | &ff_hwcontext_type_vaapi, | |
43 | #endif | |
a001ce31 AK |
44 | #if CONFIG_VDPAU |
45 | &ff_hwcontext_type_vdpau, | |
46 | #endif | |
89923e41 AK |
47 | NULL, |
48 | }; | |
49 | ||
b7487f4f MT |
50 | const char *hw_type_names[] = { |
51 | [AV_HWDEVICE_TYPE_CUDA] = "cuda", | |
52 | [AV_HWDEVICE_TYPE_DXVA2] = "dxva2", | |
53 | [AV_HWDEVICE_TYPE_QSV] = "qsv", | |
54 | [AV_HWDEVICE_TYPE_VAAPI] = "vaapi", | |
55 | [AV_HWDEVICE_TYPE_VDPAU] = "vdpau", | |
56 | }; | |
57 | ||
58 | enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name) | |
59 | { | |
60 | int type; | |
61 | for (type = 0; type < FF_ARRAY_ELEMS(hw_type_names); type++) { | |
62 | if (hw_type_names[type] && !strcmp(hw_type_names[type], name)) | |
63 | return type; | |
64 | } | |
65 | return AV_HWDEVICE_TYPE_NONE; | |
66 | } | |
67 | ||
68 | const char *av_hwdevice_get_type_name(enum AVHWDeviceType type) | |
69 | { | |
70 | if (type >= 0 && type < FF_ARRAY_ELEMS(hw_type_names)) | |
71 | return hw_type_names[type]; | |
72 | else | |
73 | return NULL; | |
74 | } | |
75 | ||
76 | enum AVHWDeviceType av_hwdevice_iterate_types(enum AVHWDeviceType prev) | |
77 | { | |
78 | enum AVHWDeviceType next; | |
79 | int i, set = 0; | |
80 | for (i = 0; hw_table[i]; i++) { | |
81 | if (prev != AV_HWDEVICE_TYPE_NONE && hw_table[i]->type <= prev) | |
82 | continue; | |
83 | if (!set || hw_table[i]->type < next) { | |
84 | next = hw_table[i]->type; | |
85 | set = 1; | |
86 | } | |
87 | } | |
88 | return set ? next : AV_HWDEVICE_TYPE_NONE; | |
89 | } | |
90 | ||
89923e41 AK |
91 | static const AVClass hwdevice_ctx_class = { |
92 | .class_name = "AVHWDeviceContext", | |
93 | .item_name = av_default_item_name, | |
94 | .version = LIBAVUTIL_VERSION_INT, | |
95 | }; | |
96 | ||
97 | static void hwdevice_ctx_free(void *opaque, uint8_t *data) | |
98 | { | |
99 | AVHWDeviceContext *ctx = (AVHWDeviceContext*)data; | |
100 | ||
101 | /* uninit might still want access the hw context and the user | |
102 | * free() callback might destroy it, so uninit has to be called first */ | |
103 | if (ctx->internal->hw_type->device_uninit) | |
104 | ctx->internal->hw_type->device_uninit(ctx); | |
105 | ||
106 | if (ctx->free) | |
107 | ctx->free(ctx); | |
108 | ||
b266ad56 MT |
109 | av_buffer_unref(&ctx->internal->source_device); |
110 | ||
89923e41 AK |
111 | av_freep(&ctx->hwctx); |
112 | av_freep(&ctx->internal->priv); | |
113 | av_freep(&ctx->internal); | |
114 | av_freep(&ctx); | |
115 | } | |
116 | ||
117 | AVBufferRef *av_hwdevice_ctx_alloc(enum AVHWDeviceType type) | |
118 | { | |
119 | AVHWDeviceContext *ctx; | |
120 | AVBufferRef *buf; | |
121 | const HWContextType *hw_type = NULL; | |
122 | int i; | |
123 | ||
124 | for (i = 0; hw_table[i]; i++) { | |
125 | if (hw_table[i]->type == type) { | |
126 | hw_type = hw_table[i]; | |
127 | break; | |
128 | } | |
129 | } | |
130 | if (!hw_type) | |
131 | return NULL; | |
132 | ||
133 | ctx = av_mallocz(sizeof(*ctx)); | |
134 | if (!ctx) | |
135 | return NULL; | |
136 | ||
137 | ctx->internal = av_mallocz(sizeof(*ctx->internal)); | |
138 | if (!ctx->internal) | |
139 | goto fail; | |
140 | ||
141 | if (hw_type->device_priv_size) { | |
142 | ctx->internal->priv = av_mallocz(hw_type->device_priv_size); | |
143 | if (!ctx->internal->priv) | |
144 | goto fail; | |
145 | } | |
146 | ||
147 | if (hw_type->device_hwctx_size) { | |
148 | ctx->hwctx = av_mallocz(hw_type->device_hwctx_size); | |
149 | if (!ctx->hwctx) | |
150 | goto fail; | |
151 | } | |
152 | ||
153 | buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx), | |
154 | hwdevice_ctx_free, NULL, | |
155 | AV_BUFFER_FLAG_READONLY); | |
156 | if (!buf) | |
157 | goto fail; | |
158 | ||
159 | ctx->type = type; | |
160 | ctx->av_class = &hwdevice_ctx_class; | |
161 | ||
162 | ctx->internal->hw_type = hw_type; | |
163 | ||
164 | return buf; | |
165 | ||
166 | fail: | |
167 | if (ctx->internal) | |
168 | av_freep(&ctx->internal->priv); | |
169 | av_freep(&ctx->internal); | |
170 | av_freep(&ctx->hwctx); | |
171 | av_freep(&ctx); | |
172 | return NULL; | |
173 | } | |
174 | ||
175 | int av_hwdevice_ctx_init(AVBufferRef *ref) | |
176 | { | |
177 | AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data; | |
178 | int ret; | |
179 | ||
180 | if (ctx->internal->hw_type->device_init) { | |
181 | ret = ctx->internal->hw_type->device_init(ctx); | |
182 | if (ret < 0) | |
183 | goto fail; | |
184 | } | |
185 | ||
186 | return 0; | |
187 | fail: | |
188 | if (ctx->internal->hw_type->device_uninit) | |
189 | ctx->internal->hw_type->device_uninit(ctx); | |
190 | return ret; | |
191 | } | |
192 | ||
193 | static const AVClass hwframe_ctx_class = { | |
194 | .class_name = "AVHWFramesContext", | |
195 | .item_name = av_default_item_name, | |
196 | .version = LIBAVUTIL_VERSION_INT, | |
197 | }; | |
198 | ||
199 | static void hwframe_ctx_free(void *opaque, uint8_t *data) | |
200 | { | |
201 | AVHWFramesContext *ctx = (AVHWFramesContext*)data; | |
202 | ||
d06aa24b MT |
203 | if (ctx->internal->source_frames) { |
204 | av_buffer_unref(&ctx->internal->source_frames); | |
89923e41 | 205 | |
d06aa24b MT |
206 | } else { |
207 | if (ctx->internal->pool_internal) | |
208 | av_buffer_pool_uninit(&ctx->internal->pool_internal); | |
89923e41 | 209 | |
d06aa24b MT |
210 | if (ctx->internal->hw_type->frames_uninit) |
211 | ctx->internal->hw_type->frames_uninit(ctx); | |
212 | ||
213 | if (ctx->free) | |
214 | ctx->free(ctx); | |
215 | } | |
89923e41 AK |
216 | |
217 | av_buffer_unref(&ctx->device_ref); | |
218 | ||
219 | av_freep(&ctx->hwctx); | |
220 | av_freep(&ctx->internal->priv); | |
221 | av_freep(&ctx->internal); | |
222 | av_freep(&ctx); | |
223 | } | |
224 | ||
225 | AVBufferRef *av_hwframe_ctx_alloc(AVBufferRef *device_ref_in) | |
226 | { | |
227 | AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)device_ref_in->data; | |
228 | const HWContextType *hw_type = device_ctx->internal->hw_type; | |
229 | AVHWFramesContext *ctx; | |
230 | AVBufferRef *buf, *device_ref = NULL;; | |
231 | ||
232 | ctx = av_mallocz(sizeof(*ctx)); | |
233 | if (!ctx) | |
234 | return NULL; | |
235 | ||
236 | ctx->internal = av_mallocz(sizeof(*ctx->internal)); | |
237 | if (!ctx->internal) | |
238 | goto fail; | |
239 | ||
240 | if (hw_type->frames_priv_size) { | |
241 | ctx->internal->priv = av_mallocz(hw_type->frames_priv_size); | |
242 | if (!ctx->internal->priv) | |
243 | goto fail; | |
244 | } | |
245 | ||
246 | if (hw_type->frames_hwctx_size) { | |
247 | ctx->hwctx = av_mallocz(hw_type->frames_hwctx_size); | |
248 | if (!ctx->hwctx) | |
249 | goto fail; | |
250 | } | |
251 | ||
252 | device_ref = av_buffer_ref(device_ref_in); | |
253 | if (!device_ref) | |
254 | goto fail; | |
255 | ||
256 | buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx), | |
257 | hwframe_ctx_free, NULL, | |
258 | AV_BUFFER_FLAG_READONLY); | |
259 | if (!buf) | |
260 | goto fail; | |
261 | ||
262 | ctx->av_class = &hwframe_ctx_class; | |
263 | ctx->device_ref = device_ref; | |
264 | ctx->device_ctx = device_ctx; | |
265 | ctx->format = AV_PIX_FMT_NONE; | |
a0f469da | 266 | ctx->sw_format = AV_PIX_FMT_NONE; |
89923e41 AK |
267 | |
268 | ctx->internal->hw_type = hw_type; | |
269 | ||
270 | return buf; | |
271 | ||
272 | fail: | |
273 | if (device_ref) | |
274 | av_buffer_unref(&device_ref); | |
275 | if (ctx->internal) | |
276 | av_freep(&ctx->internal->priv); | |
277 | av_freep(&ctx->internal); | |
278 | av_freep(&ctx->hwctx); | |
279 | av_freep(&ctx); | |
280 | return NULL; | |
281 | } | |
282 | ||
283 | static int hwframe_pool_prealloc(AVBufferRef *ref) | |
284 | { | |
285 | AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data; | |
286 | AVFrame **frames; | |
287 | int i, ret = 0; | |
288 | ||
289 | frames = av_mallocz_array(ctx->initial_pool_size, sizeof(*frames)); | |
290 | if (!frames) | |
291 | return AVERROR(ENOMEM); | |
292 | ||
293 | for (i = 0; i < ctx->initial_pool_size; i++) { | |
294 | frames[i] = av_frame_alloc(); | |
295 | if (!frames[i]) | |
296 | goto fail; | |
297 | ||
298 | ret = av_hwframe_get_buffer(ref, frames[i], 0); | |
299 | if (ret < 0) | |
300 | goto fail; | |
301 | } | |
302 | ||
303 | fail: | |
304 | for (i = 0; i < ctx->initial_pool_size; i++) | |
305 | av_frame_free(&frames[i]); | |
306 | av_freep(&frames); | |
307 | ||
308 | return ret; | |
309 | } | |
310 | ||
311 | int av_hwframe_ctx_init(AVBufferRef *ref) | |
312 | { | |
313 | AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data; | |
314 | const enum AVPixelFormat *pix_fmt; | |
315 | int ret; | |
316 | ||
d06aa24b MT |
317 | if (ctx->internal->source_frames) { |
318 | /* A derived frame context is already initialised. */ | |
319 | return 0; | |
320 | } | |
321 | ||
89923e41 AK |
322 | /* validate the pixel format */ |
323 | for (pix_fmt = ctx->internal->hw_type->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) { | |
324 | if (*pix_fmt == ctx->format) | |
325 | break; | |
326 | } | |
327 | if (*pix_fmt == AV_PIX_FMT_NONE) { | |
328 | av_log(ctx, AV_LOG_ERROR, | |
329 | "The hardware pixel format '%s' is not supported by the device type '%s'\n", | |
330 | av_get_pix_fmt_name(ctx->format), ctx->internal->hw_type->name); | |
331 | return AVERROR(ENOSYS); | |
332 | } | |
333 | ||
334 | /* validate the dimensions */ | |
335 | ret = av_image_check_size(ctx->width, ctx->height, 0, ctx); | |
336 | if (ret < 0) | |
337 | return ret; | |
338 | ||
339 | /* format-specific init */ | |
340 | if (ctx->internal->hw_type->frames_init) { | |
341 | ret = ctx->internal->hw_type->frames_init(ctx); | |
342 | if (ret < 0) | |
343 | goto fail; | |
344 | } | |
345 | ||
346 | if (ctx->internal->pool_internal && !ctx->pool) | |
347 | ctx->pool = ctx->internal->pool_internal; | |
348 | ||
349 | /* preallocate the frames in the pool, if requested */ | |
350 | if (ctx->initial_pool_size > 0) { | |
351 | ret = hwframe_pool_prealloc(ref); | |
352 | if (ret < 0) | |
353 | goto fail; | |
354 | } | |
355 | ||
356 | return 0; | |
357 | fail: | |
358 | if (ctx->internal->hw_type->frames_uninit) | |
359 | ctx->internal->hw_type->frames_uninit(ctx); | |
360 | return ret; | |
361 | } | |
362 | ||
363 | int av_hwframe_transfer_get_formats(AVBufferRef *hwframe_ref, | |
364 | enum AVHWFrameTransferDirection dir, | |
365 | enum AVPixelFormat **formats, int flags) | |
366 | { | |
367 | AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data; | |
368 | ||
369 | if (!ctx->internal->hw_type->transfer_get_formats) | |
370 | return AVERROR(ENOSYS); | |
371 | ||
372 | return ctx->internal->hw_type->transfer_get_formats(ctx, dir, formats); | |
373 | } | |
374 | ||
375 | static int transfer_data_alloc(AVFrame *dst, const AVFrame *src, int flags) | |
376 | { | |
fdfe0136 | 377 | AVHWFramesContext *ctx = (AVHWFramesContext*)src->hw_frames_ctx->data; |
89923e41 AK |
378 | AVFrame *frame_tmp; |
379 | int ret = 0; | |
380 | ||
381 | frame_tmp = av_frame_alloc(); | |
382 | if (!frame_tmp) | |
383 | return AVERROR(ENOMEM); | |
384 | ||
385 | /* if the format is set, use that | |
386 | * otherwise pick the first supported one */ | |
387 | if (dst->format >= 0) { | |
388 | frame_tmp->format = dst->format; | |
389 | } else { | |
390 | enum AVPixelFormat *formats; | |
391 | ||
392 | ret = av_hwframe_transfer_get_formats(src->hw_frames_ctx, | |
393 | AV_HWFRAME_TRANSFER_DIRECTION_FROM, | |
394 | &formats, 0); | |
395 | if (ret < 0) | |
396 | goto fail; | |
397 | frame_tmp->format = formats[0]; | |
398 | av_freep(&formats); | |
399 | } | |
fdfe0136 AK |
400 | frame_tmp->width = ctx->width; |
401 | frame_tmp->height = ctx->height; | |
89923e41 AK |
402 | |
403 | ret = av_frame_get_buffer(frame_tmp, 32); | |
404 | if (ret < 0) | |
405 | goto fail; | |
406 | ||
407 | ret = av_hwframe_transfer_data(frame_tmp, src, flags); | |
408 | if (ret < 0) | |
409 | goto fail; | |
410 | ||
fdfe0136 AK |
411 | frame_tmp->width = src->width; |
412 | frame_tmp->height = src->height; | |
413 | ||
89923e41 AK |
414 | av_frame_move_ref(dst, frame_tmp); |
415 | ||
416 | fail: | |
417 | av_frame_free(&frame_tmp); | |
418 | return ret; | |
419 | } | |
420 | ||
421 | int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags) | |
422 | { | |
423 | AVHWFramesContext *ctx; | |
424 | int ret; | |
425 | ||
426 | if (!dst->buf[0]) | |
427 | return transfer_data_alloc(dst, src, flags); | |
428 | ||
429 | if (src->hw_frames_ctx) { | |
430 | ctx = (AVHWFramesContext*)src->hw_frames_ctx->data; | |
431 | ||
432 | ret = ctx->internal->hw_type->transfer_data_from(ctx, dst, src); | |
433 | if (ret < 0) | |
434 | return ret; | |
435 | } else if (dst->hw_frames_ctx) { | |
436 | ctx = (AVHWFramesContext*)dst->hw_frames_ctx->data; | |
437 | ||
438 | ret = ctx->internal->hw_type->transfer_data_to(ctx, dst, src); | |
439 | if (ret < 0) | |
440 | return ret; | |
441 | } else | |
442 | return AVERROR(ENOSYS); | |
443 | ||
444 | return 0; | |
445 | } | |
446 | ||
447 | int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags) | |
448 | { | |
449 | AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data; | |
450 | int ret; | |
451 | ||
d06aa24b MT |
452 | if (ctx->internal->source_frames) { |
453 | // This is a derived frame context, so we allocate in the source | |
454 | // and map the frame immediately. | |
455 | AVFrame *src_frame; | |
456 | ||
457 | src_frame = av_frame_alloc(); | |
458 | if (!src_frame) | |
459 | return AVERROR(ENOMEM); | |
460 | ||
461 | ret = av_hwframe_get_buffer(ctx->internal->source_frames, | |
462 | src_frame, 0); | |
463 | if (ret < 0) | |
464 | return ret; | |
465 | ||
466 | ret = av_hwframe_map(frame, src_frame, 0); | |
467 | if (ret) { | |
468 | av_log(ctx, AV_LOG_ERROR, "Failed to map frame into derived " | |
469 | "frame context: %d.\n", ret); | |
470 | av_frame_free(&src_frame); | |
471 | return ret; | |
472 | } | |
473 | ||
474 | // Free the source frame immediately - the mapped frame still | |
475 | // contains a reference to it. | |
476 | av_frame_free(&src_frame); | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
89923e41 AK |
481 | if (!ctx->internal->hw_type->frames_get_buffer) |
482 | return AVERROR(ENOSYS); | |
483 | ||
484 | if (!ctx->pool) | |
485 | return AVERROR(EINVAL); | |
486 | ||
487 | frame->hw_frames_ctx = av_buffer_ref(hwframe_ref); | |
488 | if (!frame->hw_frames_ctx) | |
489 | return AVERROR(ENOMEM); | |
490 | ||
491 | ret = ctx->internal->hw_type->frames_get_buffer(ctx, frame); | |
492 | if (ret < 0) { | |
493 | av_buffer_unref(&frame->hw_frames_ctx); | |
494 | return ret; | |
495 | } | |
496 | ||
497 | return 0; | |
498 | } | |
b1f01e85 MT |
499 | |
500 | void *av_hwdevice_hwconfig_alloc(AVBufferRef *ref) | |
501 | { | |
502 | AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data; | |
503 | const HWContextType *hw_type = ctx->internal->hw_type; | |
504 | ||
505 | if (hw_type->device_hwconfig_size == 0) | |
506 | return NULL; | |
507 | ||
508 | return av_mallocz(hw_type->device_hwconfig_size); | |
509 | } | |
510 | ||
511 | AVHWFramesConstraints *av_hwdevice_get_hwframe_constraints(AVBufferRef *ref, | |
512 | const void *hwconfig) | |
513 | { | |
514 | AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data; | |
515 | const HWContextType *hw_type = ctx->internal->hw_type; | |
516 | AVHWFramesConstraints *constraints; | |
517 | ||
518 | if (!hw_type->frames_get_constraints) | |
519 | return NULL; | |
520 | ||
521 | constraints = av_mallocz(sizeof(*constraints)); | |
522 | if (!constraints) | |
523 | return NULL; | |
524 | ||
525 | constraints->min_width = constraints->min_height = 0; | |
526 | constraints->max_width = constraints->max_height = INT_MAX; | |
527 | ||
528 | if (hw_type->frames_get_constraints(ctx, hwconfig, constraints) >= 0) { | |
529 | return constraints; | |
530 | } else { | |
531 | av_hwframe_constraints_free(&constraints); | |
532 | return NULL; | |
533 | } | |
534 | } | |
535 | ||
536 | void av_hwframe_constraints_free(AVHWFramesConstraints **constraints) | |
537 | { | |
538 | if (*constraints) { | |
539 | av_freep(&(*constraints)->valid_hw_formats); | |
540 | av_freep(&(*constraints)->valid_sw_formats); | |
541 | } | |
542 | av_freep(constraints); | |
543 | } | |
1c9e8616 AK |
544 | |
545 | int av_hwdevice_ctx_create(AVBufferRef **pdevice_ref, enum AVHWDeviceType type, | |
546 | const char *device, AVDictionary *opts, int flags) | |
547 | { | |
548 | AVBufferRef *device_ref = NULL; | |
549 | AVHWDeviceContext *device_ctx; | |
550 | int ret = 0; | |
551 | ||
552 | device_ref = av_hwdevice_ctx_alloc(type); | |
553 | if (!device_ref) { | |
554 | ret = AVERROR(ENOMEM); | |
555 | goto fail; | |
556 | } | |
557 | device_ctx = (AVHWDeviceContext*)device_ref->data; | |
558 | ||
559 | if (!device_ctx->internal->hw_type->device_create) { | |
560 | ret = AVERROR(ENOSYS); | |
561 | goto fail; | |
562 | } | |
563 | ||
564 | ret = device_ctx->internal->hw_type->device_create(device_ctx, device, | |
565 | opts, flags); | |
566 | if (ret < 0) | |
567 | goto fail; | |
568 | ||
569 | ret = av_hwdevice_ctx_init(device_ref); | |
570 | if (ret < 0) | |
571 | goto fail; | |
572 | ||
573 | *pdevice_ref = device_ref; | |
574 | return 0; | |
575 | fail: | |
576 | av_buffer_unref(&device_ref); | |
577 | *pdevice_ref = NULL; | |
578 | return ret; | |
579 | } | |
d06aa24b | 580 | |
b266ad56 MT |
581 | int av_hwdevice_ctx_create_derived(AVBufferRef **dst_ref_ptr, |
582 | enum AVHWDeviceType type, | |
583 | AVBufferRef *src_ref, int flags) | |
584 | { | |
585 | AVBufferRef *dst_ref = NULL, *tmp_ref; | |
586 | AVHWDeviceContext *dst_ctx, *tmp_ctx; | |
587 | int ret = 0; | |
588 | ||
589 | tmp_ref = src_ref; | |
590 | while (tmp_ref) { | |
591 | tmp_ctx = (AVHWDeviceContext*)tmp_ref->data; | |
592 | if (tmp_ctx->type == type) { | |
593 | dst_ref = av_buffer_ref(tmp_ref); | |
594 | if (!dst_ref) { | |
595 | ret = AVERROR(ENOMEM); | |
596 | goto fail; | |
597 | } | |
598 | goto done; | |
599 | } | |
600 | tmp_ref = tmp_ctx->internal->source_device; | |
601 | } | |
602 | ||
603 | dst_ref = av_hwdevice_ctx_alloc(type); | |
604 | if (!dst_ref) { | |
605 | ret = AVERROR(ENOMEM); | |
606 | goto fail; | |
607 | } | |
608 | dst_ctx = (AVHWDeviceContext*)dst_ref->data; | |
609 | ||
610 | tmp_ref = src_ref; | |
611 | while (tmp_ref) { | |
612 | tmp_ctx = (AVHWDeviceContext*)tmp_ref->data; | |
613 | if (dst_ctx->internal->hw_type->device_derive) { | |
614 | ret = dst_ctx->internal->hw_type->device_derive(dst_ctx, | |
615 | tmp_ctx, | |
616 | flags); | |
617 | if (ret == 0) { | |
618 | dst_ctx->internal->source_device = av_buffer_ref(src_ref); | |
619 | if (!dst_ctx->internal->source_device) { | |
620 | ret = AVERROR(ENOMEM); | |
621 | goto fail; | |
622 | } | |
623 | goto done; | |
624 | } | |
625 | if (ret != AVERROR(ENOSYS)) | |
626 | goto fail; | |
627 | } | |
628 | tmp_ref = tmp_ctx->internal->source_device; | |
629 | } | |
630 | ||
631 | ret = AVERROR(ENOSYS); | |
632 | goto fail; | |
633 | ||
634 | done: | |
635 | *dst_ref_ptr = dst_ref; | |
636 | return 0; | |
637 | ||
638 | fail: | |
639 | av_buffer_unref(&dst_ref); | |
640 | *dst_ref_ptr = NULL; | |
641 | return ret; | |
642 | } | |
643 | ||
d06aa24b MT |
644 | static void ff_hwframe_unmap(void *opaque, uint8_t *data) |
645 | { | |
646 | HWMapDescriptor *hwmap = (HWMapDescriptor*)data; | |
647 | AVHWFramesContext *ctx = opaque; | |
648 | ||
649 | if (hwmap->unmap) | |
650 | hwmap->unmap(ctx, hwmap); | |
651 | ||
652 | av_frame_free(&hwmap->source); | |
653 | ||
654 | av_buffer_unref(&hwmap->hw_frames_ctx); | |
655 | ||
656 | av_free(hwmap); | |
657 | } | |
658 | ||
659 | int ff_hwframe_map_create(AVBufferRef *hwframe_ref, | |
660 | AVFrame *dst, const AVFrame *src, | |
661 | void (*unmap)(AVHWFramesContext *ctx, | |
662 | HWMapDescriptor *hwmap), | |
663 | void *priv) | |
664 | { | |
665 | AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data; | |
666 | HWMapDescriptor *hwmap; | |
667 | int ret; | |
668 | ||
669 | hwmap = av_mallocz(sizeof(*hwmap)); | |
670 | if (!hwmap) { | |
671 | ret = AVERROR(ENOMEM); | |
672 | goto fail; | |
673 | } | |
674 | ||
675 | hwmap->source = av_frame_alloc(); | |
676 | if (!hwmap->source) { | |
677 | ret = AVERROR(ENOMEM); | |
678 | goto fail; | |
679 | } | |
680 | ret = av_frame_ref(hwmap->source, src); | |
681 | if (ret < 0) | |
682 | goto fail; | |
683 | ||
684 | hwmap->hw_frames_ctx = av_buffer_ref(hwframe_ref); | |
685 | if (!hwmap->hw_frames_ctx) { | |
686 | ret = AVERROR(ENOMEM); | |
687 | goto fail; | |
688 | } | |
689 | ||
690 | hwmap->unmap = unmap; | |
691 | hwmap->priv = priv; | |
692 | ||
693 | dst->buf[0] = av_buffer_create((uint8_t*)hwmap, sizeof(*hwmap), | |
694 | &ff_hwframe_unmap, ctx, 0); | |
695 | if (!dst->buf[0]) { | |
696 | ret = AVERROR(ENOMEM); | |
697 | goto fail; | |
698 | } | |
699 | ||
700 | return 0; | |
701 | ||
702 | fail: | |
703 | if (hwmap) { | |
704 | av_buffer_unref(&hwmap->hw_frames_ctx); | |
705 | av_frame_free(&hwmap->source); | |
706 | } | |
707 | av_free(hwmap); | |
708 | return ret; | |
709 | } | |
710 | ||
711 | int av_hwframe_map(AVFrame *dst, const AVFrame *src, int flags) | |
712 | { | |
713 | AVHWFramesContext *src_frames, *dst_frames; | |
714 | HWMapDescriptor *hwmap; | |
715 | int ret; | |
716 | ||
717 | if (src->hw_frames_ctx && dst->hw_frames_ctx) { | |
718 | src_frames = (AVHWFramesContext*)src->hw_frames_ctx->data; | |
719 | dst_frames = (AVHWFramesContext*)dst->hw_frames_ctx->data; | |
720 | ||
721 | if ((src_frames == dst_frames && | |
722 | src->format == dst_frames->sw_format && | |
723 | dst->format == dst_frames->format) || | |
724 | (src_frames->internal->source_frames && | |
725 | src_frames->internal->source_frames->data == | |
726 | (uint8_t*)dst_frames)) { | |
727 | // This is an unmap operation. We don't need to directly | |
728 | // do anything here other than fill in the original frame, | |
729 | // because the real unmap will be invoked when the last | |
730 | // reference to the mapped frame disappears. | |
731 | if (!src->buf[0]) { | |
732 | av_log(src_frames, AV_LOG_ERROR, "Invalid mapping " | |
733 | "found when attempting unmap.\n"); | |
734 | return AVERROR(EINVAL); | |
735 | } | |
736 | hwmap = (HWMapDescriptor*)src->buf[0]->data; | |
737 | av_frame_unref(dst); | |
738 | return av_frame_ref(dst, hwmap->source); | |
739 | } | |
740 | } | |
741 | ||
742 | if (src->hw_frames_ctx) { | |
743 | src_frames = (AVHWFramesContext*)src->hw_frames_ctx->data; | |
744 | ||
745 | if (src_frames->format == src->format && | |
746 | src_frames->internal->hw_type->map_from) { | |
747 | ret = src_frames->internal->hw_type->map_from(src_frames, | |
748 | dst, src, flags); | |
749 | if (ret != AVERROR(ENOSYS)) | |
750 | return ret; | |
751 | } | |
752 | } | |
753 | ||
754 | if (dst->hw_frames_ctx) { | |
755 | dst_frames = (AVHWFramesContext*)dst->hw_frames_ctx->data; | |
756 | ||
757 | if (dst_frames->format == dst->format && | |
758 | dst_frames->internal->hw_type->map_to) { | |
759 | ret = dst_frames->internal->hw_type->map_to(dst_frames, | |
760 | dst, src, flags); | |
761 | if (ret != AVERROR(ENOSYS)) | |
762 | return ret; | |
763 | } | |
764 | } | |
765 | ||
766 | return AVERROR(ENOSYS); | |
767 | } | |
768 | ||
769 | int av_hwframe_ctx_create_derived(AVBufferRef **derived_frame_ctx, | |
770 | enum AVPixelFormat format, | |
771 | AVBufferRef *derived_device_ctx, | |
772 | AVBufferRef *source_frame_ctx, | |
773 | int flags) | |
774 | { | |
775 | AVBufferRef *dst_ref = NULL; | |
776 | AVHWFramesContext *dst = NULL; | |
777 | AVHWFramesContext *src = (AVHWFramesContext*)source_frame_ctx->data; | |
778 | int ret; | |
779 | ||
780 | if (src->internal->source_frames) { | |
781 | AVHWFramesContext *src_src = | |
782 | (AVHWFramesContext*)src->internal->source_frames->data; | |
783 | AVHWDeviceContext *dst_dev = | |
784 | (AVHWDeviceContext*)derived_device_ctx->data; | |
785 | ||
786 | if (src_src->device_ctx == dst_dev) { | |
787 | // This is actually an unmapping, so we just return a | |
788 | // reference to the source frame context. | |
789 | *derived_frame_ctx = | |
790 | av_buffer_ref(src->internal->source_frames); | |
791 | if (!*derived_frame_ctx) { | |
792 | ret = AVERROR(ENOMEM); | |
793 | goto fail; | |
794 | } | |
795 | return 0; | |
796 | } | |
797 | } | |
798 | ||
799 | dst_ref = av_hwframe_ctx_alloc(derived_device_ctx); | |
800 | if (!dst_ref) { | |
801 | ret = AVERROR(ENOMEM); | |
802 | goto fail; | |
803 | } | |
804 | ||
805 | dst = (AVHWFramesContext*)dst_ref->data; | |
806 | ||
807 | dst->format = format; | |
808 | dst->sw_format = src->sw_format; | |
809 | dst->width = src->width; | |
810 | dst->height = src->height; | |
811 | ||
812 | dst->internal->source_frames = av_buffer_ref(source_frame_ctx); | |
813 | if (!dst->internal->source_frames) { | |
814 | ret = AVERROR(ENOMEM); | |
815 | goto fail; | |
816 | } | |
817 | ||
818 | ret = av_hwframe_ctx_init(dst_ref); | |
819 | if (ret) | |
820 | goto fail; | |
821 | ||
822 | *derived_frame_ctx = dst_ref; | |
823 | return 0; | |
824 | ||
825 | fail: | |
826 | if (dst) | |
827 | av_buffer_unref(&dst->internal->source_frames); | |
828 | av_buffer_unref(&dst_ref); | |
829 | return ret; | |
830 | } |