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qsv.c
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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 FFmpeg.
8  *
9  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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/mem.h"
31 #include "libavutil/log.h"
32 #include "libavutil/pixfmt.h"
33 #include "libavutil/time.h"
34 
35 #include "avcodec.h"
36 #include "internal.h"
37 #include "qsv_internal.h"
38 
39 int ff_qsv_error(int mfx_err)
40 {
41  switch (mfx_err) {
42  case MFX_ERR_NONE:
43  return 0;
44  case MFX_ERR_MEMORY_ALLOC:
45  case MFX_ERR_NOT_ENOUGH_BUFFER:
46  return AVERROR(ENOMEM);
47  case MFX_ERR_INVALID_HANDLE:
48  return AVERROR(EINVAL);
49  case MFX_ERR_DEVICE_FAILED:
50  case MFX_ERR_DEVICE_LOST:
51  case MFX_ERR_LOCK_MEMORY:
52  return AVERROR(EIO);
53  case MFX_ERR_NULL_PTR:
54  case MFX_ERR_UNDEFINED_BEHAVIOR:
55  case MFX_ERR_NOT_INITIALIZED:
56  return AVERROR_BUG;
57  case MFX_ERR_UNSUPPORTED:
58  case MFX_ERR_NOT_FOUND:
59  return AVERROR(ENOSYS);
60  case MFX_ERR_MORE_DATA:
61  case MFX_ERR_MORE_SURFACE:
62  case MFX_ERR_MORE_BITSTREAM:
63  return AVERROR(EAGAIN);
64  case MFX_ERR_INCOMPATIBLE_VIDEO_PARAM:
65  case MFX_ERR_INVALID_VIDEO_PARAM:
66  return AVERROR(EINVAL);
67  case MFX_ERR_ABORTED:
68  case MFX_ERR_UNKNOWN:
69  default:
70  return AVERROR_UNKNOWN;
71  }
72 }
73 
74 int ff_qsv_map_pixfmt(enum AVPixelFormat format)
75 {
76  switch (format) {
77  case AV_PIX_FMT_YUV420P:
78  case AV_PIX_FMT_YUVJ420P:
79  return AV_PIX_FMT_NV12;
80  default:
81  return AVERROR(ENOSYS);
82  }
83 }
84 
85 static int codec_id_to_mfx(enum AVCodecID codec_id)
86 {
87  switch (codec_id) {
88  case AV_CODEC_ID_H264:
89  return MFX_CODEC_AVC;
90  case AV_CODEC_ID_MPEG1VIDEO:
91  case AV_CODEC_ID_MPEG2VIDEO:
92  return MFX_CODEC_MPEG2;
93  case AV_CODEC_ID_VC1:
94  return MFX_CODEC_VC1;
95  default:
96  break;
97  }
98 
99  return AVERROR(ENOSYS);
100 }
101 
102 static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session)
103 {
104  if (!session) {
105  if (!q->internal_session) {
106  mfxIMPL impl = MFX_IMPL_AUTO_ANY;
107  mfxVersion ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } };
108 
109  const char *desc;
110  int ret;
111 
112  ret = MFXInit(impl, &ver, &q->internal_session);
113  if (ret < 0) {
114  av_log(avctx, AV_LOG_ERROR, "Error initializing an internal MFX session\n");
115  return ff_qsv_error(ret);
116  }
117 
118  MFXQueryIMPL(q->internal_session, &impl);
119 
120  if (impl & MFX_IMPL_SOFTWARE)
121  desc = "software";
122  else if (impl & MFX_IMPL_HARDWARE)
123  desc = "hardware accelerated";
124  else
125  desc = "unknown";
126 
127  av_log(avctx, AV_LOG_VERBOSE,
128  "Initialized an internal MFX session using %s implementation\n",
129  desc);
130  }
131 
132  q->session = q->internal_session;
133  } else {
134  q->session = session;
135  }
136 
137  /* make sure the decoder is uninitialized */
138  MFXVideoDECODE_Close(q->session);
139 
140  return 0;
141 }
142 
143 int ff_qsv_init(AVCodecContext *avctx, QSVContext *q, mfxSession session)
144 {
145  mfxVideoParam param = { { 0 } };
146  int ret;
147 
148  ret = qsv_init_session(avctx, q, session);
149  if (ret < 0) {
150  av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
151  return ret;
152  }
153 
154 
155  ret = codec_id_to_mfx(avctx->codec_id);
156  if (ret < 0)
157  return ret;
158 
159  param.mfx.CodecId = ret;
160  param.mfx.CodecProfile = avctx->profile;
161  param.mfx.CodecLevel = avctx->level;
162 
163  param.mfx.FrameInfo.BitDepthLuma = 8;
164  param.mfx.FrameInfo.BitDepthChroma = 8;
165  param.mfx.FrameInfo.Shift = 0;
166  param.mfx.FrameInfo.FourCC = MFX_FOURCC_NV12;
167  param.mfx.FrameInfo.Width = avctx->coded_width;
168  param.mfx.FrameInfo.Height = avctx->coded_height;
169  param.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
170 
171  param.IOPattern = q->iopattern;
172  param.AsyncDepth = q->async_depth;
173  param.ExtParam = q->ext_buffers;
174  param.NumExtParam = q->nb_ext_buffers;
175 
176  ret = MFXVideoDECODE_Init(q->session, &param);
177  if (ret < 0) {
178  av_log(avctx, AV_LOG_ERROR, "Error initializing the MFX video decoder\n");
179  return ff_qsv_error(ret);
180  }
181 
182  return 0;
183 }
184 
185 static int alloc_frame(AVCodecContext *avctx, QSVFrame *frame)
186 {
187  int ret;
188 
189  ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
190  if (ret < 0)
191  return ret;
192 
193  if (frame->frame->format == AV_PIX_FMT_QSV) {
194  frame->surface = (mfxFrameSurface1*)frame->frame->data[3];
195  } else {
196  frame->surface_internal.Info.BitDepthLuma = 8;
197  frame->surface_internal.Info.BitDepthChroma = 8;
198  frame->surface_internal.Info.FourCC = MFX_FOURCC_NV12;
199  frame->surface_internal.Info.Width = avctx->coded_width;
200  frame->surface_internal.Info.Height = avctx->coded_height;
201  frame->surface_internal.Info.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
202 
203  frame->surface_internal.Data.PitchLow = frame->frame->linesize[0];
204  frame->surface_internal.Data.Y = frame->frame->data[0];
205  frame->surface_internal.Data.UV = frame->frame->data[1];
206 
207  frame->surface = &frame->surface_internal;
208  }
209 
210  return 0;
211 }
212 
213 static void qsv_clear_unused_frames(QSVContext *q)
214 {
215  QSVFrame *cur = q->work_frames;
216  while (cur) {
217  if (cur->surface && !cur->surface->Data.Locked) {
218  cur->surface = NULL;
219  av_frame_unref(cur->frame);
220  }
221  cur = cur->next;
222  }
223 }
224 
225 static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
226 {
227  QSVFrame *frame, **last;
228  int ret;
229 
230  qsv_clear_unused_frames(q);
231 
232  frame = q->work_frames;
233  last = &q->work_frames;
234  while (frame) {
235  if (!frame->surface) {
236  ret = alloc_frame(avctx, frame);
237  if (ret < 0)
238  return ret;
239  *surf = frame->surface;
240  return 0;
241  }
242 
243  last = &frame->next;
244  frame = frame->next;
245  }
246 
247  frame = av_mallocz(sizeof(*frame));
248  if (!frame)
249  return AVERROR(ENOMEM);
250  frame->frame = av_frame_alloc();
251  if (!frame->frame) {
252  av_freep(&frame);
253  return AVERROR(ENOMEM);
254  }
255  *last = frame;
256 
257  ret = alloc_frame(avctx, frame);
258  if (ret < 0)
259  return ret;
260 
261  *surf = frame->surface;
262 
263  return 0;
264 }
265 
266 static AVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
267 {
268  QSVFrame *cur = q->work_frames;
269  while (cur) {
270  if (surf == cur->surface)
271  return cur->frame;
272  cur = cur->next;
273  }
274  return NULL;
275 }
276 
277 int ff_qsv_decode(AVCodecContext *avctx, QSVContext *q,
278  AVFrame *frame, int *got_frame,
279  AVPacket *avpkt)
280 {
281  mfxFrameSurface1 *insurf;
282  mfxFrameSurface1 *outsurf;
283  mfxSyncPoint sync;
284  mfxBitstream bs = { { { 0 } } };
285  int ret;
286 
287  if (avpkt->size) {
288  bs.Data = avpkt->data;
289  bs.DataLength = avpkt->size;
290  bs.MaxLength = bs.DataLength;
291  bs.TimeStamp = avpkt->pts;
292  }
293 
294  do {
295  ret = get_surface(avctx, q, &insurf);
296  if (ret < 0)
297  return ret;
298 
299  ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
300  insurf, &outsurf, &sync);
301  if (ret == MFX_WRN_DEVICE_BUSY)
302  av_usleep(1);
303 
304  } while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
305 
306  if (ret != MFX_ERR_NONE &&
307  ret != MFX_ERR_MORE_DATA &&
308  ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
309  ret != MFX_ERR_MORE_SURFACE) {
310  av_log(avctx, AV_LOG_ERROR, "Error during QSV decoding.\n");
311  return ff_qsv_error(ret);
312  }
313 
314  if (sync) {
315  AVFrame *src_frame;
316 
317  MFXVideoCORE_SyncOperation(q->session, sync, 60000);
318 
319  src_frame = find_frame(q, outsurf);
320  if (!src_frame) {
321  av_log(avctx, AV_LOG_ERROR,
322  "The returned surface does not correspond to any frame\n");
323  return AVERROR_BUG;
324  }
325 
326  ret = av_frame_ref(frame, src_frame);
327  if (ret < 0)
328  return ret;
329 
330  frame->pkt_pts = frame->pts = outsurf->Data.TimeStamp;
331 
332  frame->repeat_pict =
333  outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
334  outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
335  outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
336  frame->top_field_first =
337  outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
338  frame->interlaced_frame =
339  !(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
340 
341  *got_frame = 1;
342  }
343 
344  return bs.DataOffset;
345 }
346 
347 int ff_qsv_close(QSVContext *q)
348 {
349  QSVFrame *cur = q->work_frames;
350 
351  while (cur) {
352  q->work_frames = cur->next;
353  av_frame_free(&cur->frame);
354  av_freep(&cur);
355  cur = q->work_frames;
356  }
357 
358  if (q->internal_session)
359  MFXClose(q->internal_session);
360 
361  return 0;
362 }
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