qsv: Add ability to create a session from a device
[libav.git] / libavcodec / qsvdec.c
1 /*
2 * Intel MediaSDK QSV codec-independent code
3 *
4 * copyright (c) 2013 Luca Barbato
5 * copyright (c) 2015 Anton Khirnov <anton@khirnov.net>
6 *
7 * This file is part of Libav.
8 *
9 * Libav is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * Libav is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with Libav; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include <string.h>
25 #include <sys/types.h>
26
27 #include <mfx/mfxvideo.h>
28
29 #include "libavutil/common.h"
30 #include "libavutil/hwcontext.h"
31 #include "libavutil/hwcontext_qsv.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/log.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/pixfmt.h"
36 #include "libavutil/time.h"
37
38 #include "avcodec.h"
39 #include "internal.h"
40 #include "qsv.h"
41 #include "qsv_internal.h"
42 #include "qsvdec.h"
43
44 static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session,
45 AVBufferRef *hw_frames_ref)
46 {
47 int ret;
48
49 if (session) {
50 q->session = session;
51 } else if (hw_frames_ref) {
52 if (q->internal_session) {
53 MFXClose(q->internal_session);
54 q->internal_session = NULL;
55 }
56 av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
57
58 q->frames_ctx.hw_frames_ctx = av_buffer_ref(hw_frames_ref);
59 if (!q->frames_ctx.hw_frames_ctx)
60 return AVERROR(ENOMEM);
61
62 ret = ff_qsv_init_session_frames(avctx, &q->internal_session,
63 &q->frames_ctx, q->load_plugins,
64 q->iopattern == MFX_IOPATTERN_OUT_OPAQUE_MEMORY);
65 if (ret < 0) {
66 av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
67 return ret;
68 }
69
70 q->session = q->internal_session;
71 } else {
72 if (!q->internal_session) {
73 ret = ff_qsv_init_internal_session(avctx, &q->internal_session,
74 q->load_plugins);
75 if (ret < 0)
76 return ret;
77 }
78
79 q->session = q->internal_session;
80 }
81
82 /* make sure the decoder is uninitialized */
83 MFXVideoDECODE_Close(q->session);
84
85 return 0;
86 }
87
88 static int qsv_decode_init(AVCodecContext *avctx, QSVContext *q)
89 {
90 const AVPixFmtDescriptor *desc;
91 mfxSession session = NULL;
92 int iopattern = 0;
93 mfxVideoParam param = { 0 };
94 int frame_width = avctx->coded_width;
95 int frame_height = avctx->coded_height;
96 int ret;
97
98 desc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
99 if (!desc)
100 return AVERROR_BUG;
101
102 if (!q->async_fifo) {
103 q->async_fifo = av_fifo_alloc((1 + q->async_depth) *
104 (sizeof(mfxSyncPoint*) + sizeof(QSVFrame*)));
105 if (!q->async_fifo)
106 return AVERROR(ENOMEM);
107 }
108
109 if (avctx->pix_fmt == AV_PIX_FMT_QSV && avctx->hwaccel_context) {
110 AVQSVContext *user_ctx = avctx->hwaccel_context;
111 session = user_ctx->session;
112 iopattern = user_ctx->iopattern;
113 q->ext_buffers = user_ctx->ext_buffers;
114 q->nb_ext_buffers = user_ctx->nb_ext_buffers;
115 }
116
117 if (avctx->hw_frames_ctx) {
118 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
119 AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
120
121 if (!iopattern) {
122 if (frames_hwctx->frame_type & MFX_MEMTYPE_OPAQUE_FRAME)
123 iopattern = MFX_IOPATTERN_OUT_OPAQUE_MEMORY;
124 else if (frames_hwctx->frame_type & MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET)
125 iopattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
126 }
127
128 frame_width = frames_hwctx->surfaces[0].Info.Width;
129 frame_height = frames_hwctx->surfaces[0].Info.Height;
130 }
131
132 if (!iopattern)
133 iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
134 q->iopattern = iopattern;
135
136 ret = qsv_init_session(avctx, q, session, avctx->hw_frames_ctx);
137 if (ret < 0) {
138 av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
139 return ret;
140 }
141
142 ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
143 if (ret < 0)
144 return ret;
145
146 param.mfx.CodecId = ret;
147 param.mfx.CodecProfile = ff_qsv_profile_to_mfx(avctx->codec_id, avctx->profile);
148 param.mfx.CodecLevel = avctx->level == FF_LEVEL_UNKNOWN ? MFX_LEVEL_UNKNOWN : avctx->level;
149
150 param.mfx.FrameInfo.BitDepthLuma = desc->comp[0].depth;
151 param.mfx.FrameInfo.BitDepthChroma = desc->comp[0].depth;
152 param.mfx.FrameInfo.Shift = desc->comp[0].depth > 8;
153 param.mfx.FrameInfo.FourCC = q->fourcc;
154 param.mfx.FrameInfo.Width = frame_width;
155 param.mfx.FrameInfo.Height = frame_height;
156 param.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
157
158 switch (avctx->field_order) {
159 case AV_FIELD_PROGRESSIVE:
160 param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
161 break;
162 case AV_FIELD_TT:
163 param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_FIELD_TFF;
164 break;
165 case AV_FIELD_BB:
166 param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_FIELD_BFF;
167 break;
168 default:
169 param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_UNKNOWN;
170 break;
171 }
172
173 param.IOPattern = q->iopattern;
174 param.AsyncDepth = q->async_depth;
175 param.ExtParam = q->ext_buffers;
176 param.NumExtParam = q->nb_ext_buffers;
177
178 ret = MFXVideoDECODE_Init(q->session, &param);
179 if (ret < 0)
180 return ff_qsv_print_error(avctx, ret,
181 "Error initializing the MFX video decoder");
182
183 q->frame_info = param.mfx.FrameInfo;
184
185 return 0;
186 }
187
188 static int alloc_frame(AVCodecContext *avctx, QSVContext *q, QSVFrame *frame)
189 {
190 int ret;
191
192 ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
193 if (ret < 0)
194 return ret;
195
196 if (frame->frame->format == AV_PIX_FMT_QSV) {
197 frame->surface = *(mfxFrameSurface1*)frame->frame->data[3];
198 } else {
199 frame->surface.Info = q->frame_info;
200
201 frame->surface.Data.PitchLow = frame->frame->linesize[0];
202 frame->surface.Data.Y = frame->frame->data[0];
203 frame->surface.Data.UV = frame->frame->data[1];
204 }
205
206 if (q->frames_ctx.mids) {
207 ret = ff_qsv_find_surface_idx(&q->frames_ctx, frame);
208 if (ret < 0)
209 return ret;
210
211 frame->surface.Data.MemId = &q->frames_ctx.mids[ret];
212 }
213
214 frame->used = 1;
215
216 return 0;
217 }
218
219 static void qsv_clear_unused_frames(QSVContext *q)
220 {
221 QSVFrame *cur = q->work_frames;
222 while (cur) {
223 if (cur->used && !cur->surface.Data.Locked && !cur->queued) {
224 cur->used = 0;
225 av_frame_unref(cur->frame);
226 }
227 cur = cur->next;
228 }
229 }
230
231 static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
232 {
233 QSVFrame *frame, **last;
234 int ret;
235
236 qsv_clear_unused_frames(q);
237
238 frame = q->work_frames;
239 last = &q->work_frames;
240 while (frame) {
241 if (!frame->used) {
242 ret = alloc_frame(avctx, q, frame);
243 if (ret < 0)
244 return ret;
245 *surf = &frame->surface;
246 return 0;
247 }
248
249 last = &frame->next;
250 frame = frame->next;
251 }
252
253 frame = av_mallocz(sizeof(*frame));
254 if (!frame)
255 return AVERROR(ENOMEM);
256 frame->frame = av_frame_alloc();
257 if (!frame->frame) {
258 av_freep(&frame);
259 return AVERROR(ENOMEM);
260 }
261 *last = frame;
262
263 ret = alloc_frame(avctx, q, frame);
264 if (ret < 0)
265 return ret;
266
267 *surf = &frame->surface;
268
269 return 0;
270 }
271
272 static QSVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
273 {
274 QSVFrame *cur = q->work_frames;
275 while (cur) {
276 if (surf == &cur->surface)
277 return cur;
278 cur = cur->next;
279 }
280 return NULL;
281 }
282
283 static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
284 AVFrame *frame, int *got_frame,
285 AVPacket *avpkt)
286 {
287 QSVFrame *out_frame;
288 mfxFrameSurface1 *insurf;
289 mfxFrameSurface1 *outsurf;
290 mfxSyncPoint *sync;
291 mfxBitstream bs = { { { 0 } } };
292 int ret;
293
294 if (avpkt->size) {
295 bs.Data = avpkt->data;
296 bs.DataLength = avpkt->size;
297 bs.MaxLength = bs.DataLength;
298 bs.TimeStamp = avpkt->pts;
299 }
300
301 sync = av_mallocz(sizeof(*sync));
302 if (!sync) {
303 av_freep(&sync);
304 return AVERROR(ENOMEM);
305 }
306
307 do {
308 ret = get_surface(avctx, q, &insurf);
309 if (ret < 0) {
310 av_freep(&sync);
311 return ret;
312 }
313
314 ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
315 insurf, &outsurf, sync);
316 if (ret == MFX_WRN_DEVICE_BUSY)
317 av_usleep(1);
318
319 } while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
320
321 if (ret != MFX_ERR_NONE &&
322 ret != MFX_ERR_MORE_DATA &&
323 ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
324 ret != MFX_ERR_MORE_SURFACE) {
325 av_freep(&sync);
326 return ff_qsv_print_error(avctx, ret,
327 "Error during QSV decoding.");
328 }
329
330 /* make sure we do not enter an infinite loop if the SDK
331 * did not consume any data and did not return anything */
332 if (!*sync && !bs.DataOffset) {
333 bs.DataOffset = avpkt->size;
334 ++q->zero_consume_run;
335 if (q->zero_consume_run > 1)
336 ff_qsv_print_warning(avctx, ret, "A decode call did not consume any data");
337 } else {
338 q->zero_consume_run = 0;
339 }
340
341 if (*sync) {
342 QSVFrame *out_frame = find_frame(q, outsurf);
343
344 if (!out_frame) {
345 av_log(avctx, AV_LOG_ERROR,
346 "The returned surface does not correspond to any frame\n");
347 av_freep(&sync);
348 return AVERROR_BUG;
349 }
350
351 out_frame->queued = 1;
352 av_fifo_generic_write(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
353 av_fifo_generic_write(q->async_fifo, &sync, sizeof(sync), NULL);
354 } else {
355 av_freep(&sync);
356 }
357
358 if (!av_fifo_space(q->async_fifo) ||
359 (!avpkt->size && av_fifo_size(q->async_fifo))) {
360 AVFrame *src_frame;
361
362 av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
363 av_fifo_generic_read(q->async_fifo, &sync, sizeof(sync), NULL);
364 out_frame->queued = 0;
365
366 if (avctx->pix_fmt != AV_PIX_FMT_QSV) {
367 do {
368 ret = MFXVideoCORE_SyncOperation(q->session, *sync, 1000);
369 } while (ret == MFX_WRN_IN_EXECUTION);
370 }
371
372 av_freep(&sync);
373
374 src_frame = out_frame->frame;
375
376 ret = av_frame_ref(frame, src_frame);
377 if (ret < 0)
378 return ret;
379
380 outsurf = &out_frame->surface;
381
382 #if FF_API_PKT_PTS
383 FF_DISABLE_DEPRECATION_WARNINGS
384 frame->pkt_pts = outsurf->Data.TimeStamp;
385 FF_ENABLE_DEPRECATION_WARNINGS
386 #endif
387 frame->pts = outsurf->Data.TimeStamp;
388
389 frame->repeat_pict =
390 outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
391 outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
392 outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
393 frame->top_field_first =
394 outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
395 frame->interlaced_frame =
396 !(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
397
398 /* update the surface properties */
399 if (avctx->pix_fmt == AV_PIX_FMT_QSV)
400 ((mfxFrameSurface1*)frame->data[3])->Info = outsurf->Info;
401
402 *got_frame = 1;
403 }
404
405 return bs.DataOffset;
406 }
407
408 int ff_qsv_decode_close(QSVContext *q)
409 {
410 QSVFrame *cur = q->work_frames;
411
412 if (q->session)
413 MFXVideoDECODE_Close(q->session);
414
415 while (q->async_fifo && av_fifo_size(q->async_fifo)) {
416 QSVFrame *out_frame;
417 mfxSyncPoint *sync;
418
419 av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
420 av_fifo_generic_read(q->async_fifo, &sync, sizeof(sync), NULL);
421
422 av_freep(&sync);
423 }
424
425 while (cur) {
426 q->work_frames = cur->next;
427 av_frame_free(&cur->frame);
428 av_freep(&cur);
429 cur = q->work_frames;
430 }
431
432 av_fifo_free(q->async_fifo);
433 q->async_fifo = NULL;
434
435 av_parser_close(q->parser);
436 avcodec_free_context(&q->avctx_internal);
437
438 if (q->internal_session)
439 MFXClose(q->internal_session);
440
441 av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
442 av_buffer_unref(&q->frames_ctx.mids_buf);
443
444 return 0;
445 }
446
447 int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q,
448 AVFrame *frame, int *got_frame, AVPacket *pkt)
449 {
450 uint8_t *dummy_data;
451 int dummy_size;
452 int ret;
453
454 if (!q->avctx_internal) {
455 q->avctx_internal = avcodec_alloc_context3(NULL);
456 if (!q->avctx_internal)
457 return AVERROR(ENOMEM);
458
459 if (avctx->extradata) {
460 q->avctx_internal->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
461 if (!q->avctx_internal->extradata)
462 return AVERROR(ENOMEM);
463
464 memcpy(q->avctx_internal->extradata, avctx->extradata,
465 avctx->extradata_size);
466 q->avctx_internal->extradata_size = avctx->extradata_size;
467 }
468
469 q->parser = av_parser_init(avctx->codec_id);
470 if (!q->parser)
471 return AVERROR(ENOMEM);
472
473 q->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
474 q->orig_pix_fmt = AV_PIX_FMT_NONE;
475 }
476
477 if (!pkt->size)
478 return qsv_decode(avctx, q, frame, got_frame, pkt);
479
480 /* we assume the packets are already split properly and want
481 * just the codec parameters here */
482 av_parser_parse2(q->parser, q->avctx_internal,
483 &dummy_data, &dummy_size,
484 pkt->data, pkt->size, pkt->pts, pkt->dts,
485 pkt->pos);
486
487 /* TODO: flush delayed frames on reinit */
488 if (q->parser->format != q->orig_pix_fmt ||
489 q->parser->coded_width != avctx->coded_width ||
490 q->parser->coded_height != avctx->coded_height) {
491 enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_QSV,
492 AV_PIX_FMT_NONE,
493 AV_PIX_FMT_NONE };
494 enum AVPixelFormat qsv_format;
495
496 qsv_format = ff_qsv_map_pixfmt(q->parser->format, &q->fourcc);
497 if (qsv_format < 0) {
498 av_log(avctx, AV_LOG_ERROR,
499 "Decoding pixel format '%s' is not supported\n",
500 av_get_pix_fmt_name(q->parser->format));
501 ret = AVERROR(ENOSYS);
502 goto reinit_fail;
503 }
504
505 q->orig_pix_fmt = q->parser->format;
506 avctx->pix_fmt = pix_fmts[1] = qsv_format;
507 avctx->width = q->parser->width;
508 avctx->height = q->parser->height;
509 avctx->coded_width = q->parser->coded_width;
510 avctx->coded_height = q->parser->coded_height;
511 avctx->field_order = q->parser->field_order;
512 avctx->level = q->avctx_internal->level;
513 avctx->profile = q->avctx_internal->profile;
514
515 ret = ff_get_format(avctx, pix_fmts);
516 if (ret < 0)
517 goto reinit_fail;
518
519 avctx->pix_fmt = ret;
520
521 ret = qsv_decode_init(avctx, q);
522 if (ret < 0)
523 goto reinit_fail;
524 }
525
526 return qsv_decode(avctx, q, frame, got_frame, pkt);
527
528 reinit_fail:
529 q->orig_pix_fmt = q->parser->format = avctx->pix_fmt = AV_PIX_FMT_NONE;
530 return ret;
531 }
532
533 void ff_qsv_decode_flush(AVCodecContext *avctx, QSVContext *q)
534 {
535 q->orig_pix_fmt = AV_PIX_FMT_NONE;
536 }