9b5dc1df81880236f12566589144d604470518ab
[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_hwcontext(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 param.IOPattern = q->iopattern;
159 param.AsyncDepth = q->async_depth;
160 param.ExtParam = q->ext_buffers;
161 param.NumExtParam = q->nb_ext_buffers;
162
163 ret = MFXVideoDECODE_Init(q->session, &param);
164 if (ret < 0)
165 return ff_qsv_print_error(avctx, ret,
166 "Error initializing the MFX video decoder");
167
168 q->frame_info = param.mfx.FrameInfo;
169
170 return 0;
171 }
172
173 static int alloc_frame(AVCodecContext *avctx, QSVContext *q, QSVFrame *frame)
174 {
175 int ret;
176
177 ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
178 if (ret < 0)
179 return ret;
180
181 if (frame->frame->format == AV_PIX_FMT_QSV) {
182 frame->surface = *(mfxFrameSurface1*)frame->frame->data[3];
183 } else {
184 frame->surface.Info = q->frame_info;
185
186 frame->surface.Data.PitchLow = frame->frame->linesize[0];
187 frame->surface.Data.Y = frame->frame->data[0];
188 frame->surface.Data.UV = frame->frame->data[1];
189 }
190
191 if (q->frames_ctx.mids) {
192 ret = ff_qsv_find_surface_idx(&q->frames_ctx, frame);
193 if (ret < 0)
194 return ret;
195
196 frame->surface.Data.MemId = &q->frames_ctx.mids[ret];
197 }
198
199 frame->used = 1;
200
201 return 0;
202 }
203
204 static void qsv_clear_unused_frames(QSVContext *q)
205 {
206 QSVFrame *cur = q->work_frames;
207 while (cur) {
208 if (cur->used && !cur->surface.Data.Locked && !cur->queued) {
209 cur->used = 0;
210 av_frame_unref(cur->frame);
211 }
212 cur = cur->next;
213 }
214 }
215
216 static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
217 {
218 QSVFrame *frame, **last;
219 int ret;
220
221 qsv_clear_unused_frames(q);
222
223 frame = q->work_frames;
224 last = &q->work_frames;
225 while (frame) {
226 if (!frame->used) {
227 ret = alloc_frame(avctx, q, frame);
228 if (ret < 0)
229 return ret;
230 *surf = &frame->surface;
231 return 0;
232 }
233
234 last = &frame->next;
235 frame = frame->next;
236 }
237
238 frame = av_mallocz(sizeof(*frame));
239 if (!frame)
240 return AVERROR(ENOMEM);
241 frame->frame = av_frame_alloc();
242 if (!frame->frame) {
243 av_freep(&frame);
244 return AVERROR(ENOMEM);
245 }
246 *last = frame;
247
248 ret = alloc_frame(avctx, q, frame);
249 if (ret < 0)
250 return ret;
251
252 *surf = &frame->surface;
253
254 return 0;
255 }
256
257 static QSVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
258 {
259 QSVFrame *cur = q->work_frames;
260 while (cur) {
261 if (surf == &cur->surface)
262 return cur;
263 cur = cur->next;
264 }
265 return NULL;
266 }
267
268 static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
269 AVFrame *frame, int *got_frame,
270 AVPacket *avpkt)
271 {
272 QSVFrame *out_frame;
273 mfxFrameSurface1 *insurf;
274 mfxFrameSurface1 *outsurf;
275 mfxSyncPoint *sync;
276 mfxBitstream bs = { { { 0 } } };
277 int ret;
278
279 if (avpkt->size) {
280 bs.Data = avpkt->data;
281 bs.DataLength = avpkt->size;
282 bs.MaxLength = bs.DataLength;
283 bs.TimeStamp = avpkt->pts;
284 }
285
286 sync = av_mallocz(sizeof(*sync));
287 if (!sync) {
288 av_freep(&sync);
289 return AVERROR(ENOMEM);
290 }
291
292 do {
293 ret = get_surface(avctx, q, &insurf);
294 if (ret < 0)
295 return ret;
296
297 ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
298 insurf, &outsurf, sync);
299 if (ret == MFX_WRN_DEVICE_BUSY)
300 av_usleep(1);
301
302 } while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
303
304 if (ret != MFX_ERR_NONE &&
305 ret != MFX_ERR_MORE_DATA &&
306 ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
307 ret != MFX_ERR_MORE_SURFACE) {
308 av_freep(&sync);
309 return ff_qsv_print_error(avctx, ret,
310 "Error during QSV decoding.");
311 }
312
313 /* make sure we do not enter an infinite loop if the SDK
314 * did not consume any data and did not return anything */
315 if (!*sync && !bs.DataOffset) {
316 ff_qsv_print_warning(avctx, ret, "A decode call did not consume any data");
317 bs.DataOffset = avpkt->size;
318 }
319
320 if (*sync) {
321 QSVFrame *out_frame = find_frame(q, outsurf);
322
323 if (!out_frame) {
324 av_log(avctx, AV_LOG_ERROR,
325 "The returned surface does not correspond to any frame\n");
326 av_freep(&sync);
327 return AVERROR_BUG;
328 }
329
330 out_frame->queued = 1;
331 av_fifo_generic_write(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
332 av_fifo_generic_write(q->async_fifo, &sync, sizeof(sync), NULL);
333 } else {
334 av_freep(&sync);
335 }
336
337 if (!av_fifo_space(q->async_fifo) ||
338 (!avpkt->size && av_fifo_size(q->async_fifo))) {
339 AVFrame *src_frame;
340
341 av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
342 av_fifo_generic_read(q->async_fifo, &sync, sizeof(sync), NULL);
343 out_frame->queued = 0;
344
345 do {
346 ret = MFXVideoCORE_SyncOperation(q->session, *sync, 1000);
347 } while (ret == MFX_WRN_IN_EXECUTION);
348
349 av_freep(&sync);
350
351 src_frame = out_frame->frame;
352
353 ret = av_frame_ref(frame, src_frame);
354 if (ret < 0)
355 return ret;
356
357 outsurf = &out_frame->surface;
358
359 #if FF_API_PKT_PTS
360 FF_DISABLE_DEPRECATION_WARNINGS
361 frame->pkt_pts = outsurf->Data.TimeStamp;
362 FF_ENABLE_DEPRECATION_WARNINGS
363 #endif
364 frame->pts = outsurf->Data.TimeStamp;
365
366 frame->repeat_pict =
367 outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
368 outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
369 outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
370 frame->top_field_first =
371 outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
372 frame->interlaced_frame =
373 !(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
374
375 /* update the surface properties */
376 if (avctx->pix_fmt == AV_PIX_FMT_QSV)
377 ((mfxFrameSurface1*)frame->data[3])->Info = outsurf->Info;
378
379 *got_frame = 1;
380 }
381
382 return bs.DataOffset;
383 }
384
385 int ff_qsv_decode_close(QSVContext *q)
386 {
387 QSVFrame *cur = q->work_frames;
388
389 if (q->session)
390 MFXVideoDECODE_Close(q->session);
391
392 while (q->async_fifo && av_fifo_size(q->async_fifo)) {
393 QSVFrame *out_frame;
394 mfxSyncPoint *sync;
395
396 av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
397 av_fifo_generic_read(q->async_fifo, &sync, sizeof(sync), NULL);
398
399 av_freep(&sync);
400 }
401
402 while (cur) {
403 q->work_frames = cur->next;
404 av_frame_free(&cur->frame);
405 av_freep(&cur);
406 cur = q->work_frames;
407 }
408
409 av_fifo_free(q->async_fifo);
410 q->async_fifo = NULL;
411
412 av_parser_close(q->parser);
413 avcodec_free_context(&q->avctx_internal);
414
415 if (q->internal_session)
416 MFXClose(q->internal_session);
417
418 av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
419 av_buffer_unref(&q->frames_ctx.mids_buf);
420
421 return 0;
422 }
423
424 int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q,
425 AVFrame *frame, int *got_frame, AVPacket *pkt)
426 {
427 uint8_t *dummy_data;
428 int dummy_size;
429 int ret;
430
431 if (!q->avctx_internal) {
432 q->avctx_internal = avcodec_alloc_context3(NULL);
433 if (!q->avctx_internal)
434 return AVERROR(ENOMEM);
435
436 if (avctx->extradata) {
437 q->avctx_internal->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
438 if (!q->avctx_internal->extradata)
439 return AVERROR(ENOMEM);
440
441 memcpy(q->avctx_internal->extradata, avctx->extradata,
442 avctx->extradata_size);
443 q->avctx_internal->extradata_size = avctx->extradata_size;
444 }
445
446 q->parser = av_parser_init(avctx->codec_id);
447 if (!q->parser)
448 return AVERROR(ENOMEM);
449
450 q->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
451 q->orig_pix_fmt = AV_PIX_FMT_NONE;
452 }
453
454 if (!pkt->size)
455 return qsv_decode(avctx, q, frame, got_frame, pkt);
456
457 /* we assume the packets are already split properly and want
458 * just the codec parameters here */
459 av_parser_parse2(q->parser, q->avctx_internal,
460 &dummy_data, &dummy_size,
461 pkt->data, pkt->size, pkt->pts, pkt->dts,
462 pkt->pos);
463
464 /* TODO: flush delayed frames on reinit */
465 if (q->parser->format != q->orig_pix_fmt ||
466 q->parser->coded_width != avctx->coded_width ||
467 q->parser->coded_height != avctx->coded_height) {
468 enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_QSV,
469 AV_PIX_FMT_NONE,
470 AV_PIX_FMT_NONE };
471 enum AVPixelFormat qsv_format;
472
473 qsv_format = ff_qsv_map_pixfmt(q->parser->format, &q->fourcc);
474 if (qsv_format < 0) {
475 av_log(avctx, AV_LOG_ERROR,
476 "Decoding pixel format '%s' is not supported\n",
477 av_get_pix_fmt_name(q->parser->format));
478 ret = AVERROR(ENOSYS);
479 goto reinit_fail;
480 }
481
482 q->orig_pix_fmt = q->parser->format;
483 avctx->pix_fmt = pix_fmts[1] = qsv_format;
484 avctx->width = q->parser->width;
485 avctx->height = q->parser->height;
486 avctx->coded_width = q->parser->coded_width;
487 avctx->coded_height = q->parser->coded_height;
488 avctx->level = q->avctx_internal->level;
489 avctx->profile = q->avctx_internal->profile;
490
491 ret = ff_get_format(avctx, pix_fmts);
492 if (ret < 0)
493 goto reinit_fail;
494
495 avctx->pix_fmt = ret;
496
497 ret = qsv_decode_init(avctx, q);
498 if (ret < 0)
499 goto reinit_fail;
500 }
501
502 return qsv_decode(avctx, q, frame, got_frame, pkt);
503
504 reinit_fail:
505 q->orig_pix_fmt = q->parser->format = avctx->pix_fmt = AV_PIX_FMT_NONE;
506 return ret;
507 }
508
509 void ff_qsv_decode_flush(AVCodecContext *avctx, QSVContext *q)
510 {
511 q->orig_pix_fmt = AV_PIX_FMT_NONE;
512 }