qsvdec: properly handle asynchronous decoding
[libav.git] / libavcodec / qsvenc.c
CommitLineData
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1/*
2 * Intel MediaSDK QSV encoder utility functions
3 *
4 * copyright (c) 2013 Yukinori Yamazoe
5 * copyright (c) 2015 Anton Khirnov
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#include <mfx/mfxvideo.h>
27
28#include "libavutil/common.h"
29#include "libavutil/mem.h"
30#include "libavutil/log.h"
31#include "libavutil/time.h"
32#include "libavutil/imgutils.h"
33
34#include "avcodec.h"
35#include "internal.h"
36#include "qsv.h"
37#include "qsv_internal.h"
38#include "qsvenc.h"
39
40static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
41{
42 const char *ratecontrol_desc;
43
44 float quant;
45 int ret;
46
47 ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
48 if (ret < 0)
49 return AVERROR_BUG;
50 q->param.mfx.CodecId = ret;
51
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52 q->width_align = avctx->codec_id == AV_CODEC_ID_HEVC ? 32 : 16;
53
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54 if (avctx->level > 0)
55 q->param.mfx.CodecLevel = avctx->level;
56
57 q->param.mfx.CodecProfile = q->profile;
58 q->param.mfx.TargetUsage = q->preset;
59 q->param.mfx.GopPicSize = FFMAX(0, avctx->gop_size);
60 q->param.mfx.GopRefDist = FFMAX(-1, avctx->max_b_frames) + 1;
61 q->param.mfx.GopOptFlag = avctx->flags & CODEC_FLAG_CLOSED_GOP ?
62 MFX_GOP_CLOSED : 0;
63 q->param.mfx.IdrInterval = q->idr_interval;
64 q->param.mfx.NumSlice = avctx->slices;
65 q->param.mfx.NumRefFrame = FFMAX(0, avctx->refs);
66 q->param.mfx.EncodedOrder = 0;
67 q->param.mfx.BufferSizeInKB = 0;
68
69 q->param.mfx.FrameInfo.FourCC = MFX_FOURCC_NV12;
66acb76b 70 q->param.mfx.FrameInfo.Width = FFALIGN(avctx->width, q->width_align);
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71 q->param.mfx.FrameInfo.Height = FFALIGN(avctx->height, 32);
72 q->param.mfx.FrameInfo.CropX = 0;
73 q->param.mfx.FrameInfo.CropY = 0;
74 q->param.mfx.FrameInfo.CropW = avctx->width;
75 q->param.mfx.FrameInfo.CropH = avctx->height;
76 q->param.mfx.FrameInfo.AspectRatioW = avctx->sample_aspect_ratio.num;
77 q->param.mfx.FrameInfo.AspectRatioH = avctx->sample_aspect_ratio.den;
78 q->param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
79 q->param.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
80 q->param.mfx.FrameInfo.BitDepthLuma = 8;
81 q->param.mfx.FrameInfo.BitDepthChroma = 8;
82
83 if (avctx->framerate.den > 0 && avctx->framerate.num > 0) {
84 q->param.mfx.FrameInfo.FrameRateExtN = avctx->framerate.num;
85 q->param.mfx.FrameInfo.FrameRateExtD = avctx->framerate.den;
86 } else {
87 q->param.mfx.FrameInfo.FrameRateExtN = avctx->time_base.den;
88 q->param.mfx.FrameInfo.FrameRateExtD = avctx->time_base.num;
89 }
90
91 if (avctx->flags & CODEC_FLAG_QSCALE) {
92 q->param.mfx.RateControlMethod = MFX_RATECONTROL_CQP;
93 ratecontrol_desc = "constant quantization parameter (CQP)";
94 } else if (avctx->rc_max_rate == avctx->bit_rate) {
95 q->param.mfx.RateControlMethod = MFX_RATECONTROL_CBR;
96 ratecontrol_desc = "constant bitrate (CBR)";
97 } else if (!avctx->rc_max_rate) {
98 q->param.mfx.RateControlMethod = MFX_RATECONTROL_AVBR;
99 ratecontrol_desc = "average variable bitrate (AVBR)";
100 } else {
101 q->param.mfx.RateControlMethod = MFX_RATECONTROL_VBR;
102 ratecontrol_desc = "variable bitrate (VBR)";
103 }
104
105 av_log(avctx, AV_LOG_VERBOSE, "Using the %s ratecontrol method\n", ratecontrol_desc);
106
107 switch (q->param.mfx.RateControlMethod) {
108 case MFX_RATECONTROL_CBR:
109 case MFX_RATECONTROL_VBR:
110 q->param.mfx.InitialDelayInKB = avctx->rc_initial_buffer_occupancy / 1000;
111 q->param.mfx.TargetKbps = avctx->bit_rate / 1000;
112 q->param.mfx.MaxKbps = avctx->bit_rate / 1000;
113 break;
114 case MFX_RATECONTROL_CQP:
115 quant = avctx->global_quality / FF_QP2LAMBDA;
116
117 q->param.mfx.QPI = av_clip(quant * fabs(avctx->i_quant_factor) + avctx->i_quant_offset, 0, 51);
118 q->param.mfx.QPP = av_clip(quant, 0, 51);
119 q->param.mfx.QPB = av_clip(quant * fabs(avctx->b_quant_factor) + avctx->b_quant_offset, 0, 51);
120
121 break;
122 case MFX_RATECONTROL_AVBR:
123 q->param.mfx.TargetKbps = avctx->bit_rate / 1000;
124 q->param.mfx.Convergence = q->avbr_convergence;
125 q->param.mfx.Accuracy = q->avbr_accuracy;
126 break;
127 }
128
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129 // the HEVC encoder plugin currently fails if coding options
130 // are provided
131 if (avctx->codec_id != AV_CODEC_ID_HEVC) {
132 q->extco.Header.BufferId = MFX_EXTBUFF_CODING_OPTION;
133 q->extco.Header.BufferSz = sizeof(q->extco);
134 q->extco.CAVLC = avctx->coder_type == FF_CODER_TYPE_VLC ?
135 MFX_CODINGOPTION_ON : MFX_CODINGOPTION_UNKNOWN;
72b7441a 136
66acb76b 137 q->extparam[0] = (mfxExtBuffer *)&q->extco;
72b7441a 138
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139 q->param.ExtParam = q->extparam;
140 q->param.NumExtParam = FF_ARRAY_ELEMS(q->extparam);
141 }
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142
143 return 0;
144}
145
146static int qsv_retrieve_enc_params(AVCodecContext *avctx, QSVEncContext *q)
147{
148 uint8_t sps_buf[128];
149 uint8_t pps_buf[128];
150
151 mfxExtCodingOptionSPSPPS extradata = {
152 .Header.BufferId = MFX_EXTBUFF_CODING_OPTION_SPSPPS,
153 .Header.BufferSz = sizeof(extradata),
154 .SPSBuffer = sps_buf, .SPSBufSize = sizeof(sps_buf),
155 .PPSBuffer = pps_buf, .PPSBufSize = sizeof(pps_buf)
156 };
157
158 mfxExtBuffer *ext_buffers[] = {
159 (mfxExtBuffer*)&extradata,
160 };
161
3a85397e 162 int need_pps = avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO;
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163 int ret;
164
165 q->param.ExtParam = ext_buffers;
166 q->param.NumExtParam = FF_ARRAY_ELEMS(ext_buffers);
167
168 ret = MFXVideoENCODE_GetVideoParam(q->session, &q->param);
169 if (ret < 0)
170 return ff_qsv_error(ret);
171
172 q->packet_size = q->param.mfx.BufferSizeInKB * 1000;
173
3a85397e 174 if (!extradata.SPSBufSize || (need_pps && !extradata.PPSBufSize)) {
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175 av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx.\n");
176 return AVERROR_UNKNOWN;
177 }
178
3a85397e 179 avctx->extradata = av_malloc(extradata.SPSBufSize + need_pps * extradata.PPSBufSize +
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180 FF_INPUT_BUFFER_PADDING_SIZE);
181 if (!avctx->extradata)
182 return AVERROR(ENOMEM);
183
184 memcpy(avctx->extradata, sps_buf, extradata.SPSBufSize);
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185 if (need_pps)
186 memcpy(avctx->extradata + extradata.SPSBufSize, pps_buf, extradata.PPSBufSize);
187 avctx->extradata_size = extradata.SPSBufSize + need_pps * extradata.PPSBufSize;
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188 memset(avctx->extradata + avctx->extradata_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
189
190 return 0;
191}
192
193int ff_qsv_enc_init(AVCodecContext *avctx, QSVEncContext *q)
194{
195 int ret;
196
197 q->param.IOPattern = MFX_IOPATTERN_IN_SYSTEM_MEMORY;
198 q->param.AsyncDepth = q->async_depth;
199
200 if (avctx->hwaccel_context) {
201 AVQSVContext *qsv = avctx->hwaccel_context;
202
203 q->session = qsv->session;
204 q->param.IOPattern = qsv->iopattern;
205 }
206
207 if (!q->session) {
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208 ret = ff_qsv_init_internal_session(avctx, &q->internal_session,
209 q->load_plugins);
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210 if (ret < 0)
211 return ret;
212
213 q->session = q->internal_session;
214 }
215
216 ret = init_video_param(avctx, q);
217 if (ret < 0)
218 return ret;
219
220 ret = MFXVideoENCODE_QueryIOSurf(q->session, &q->param, &q->req);
221 if (ret < 0) {
222 av_log(avctx, AV_LOG_ERROR, "Error querying the encoding parameters\n");
223 return ff_qsv_error(ret);
224 }
225
226 ret = MFXVideoENCODE_Init(q->session, &q->param);
227 if (ret < 0) {
228 av_log(avctx, AV_LOG_ERROR, "Error initializing the encoder\n");
229 return ff_qsv_error(ret);
230 }
231
232 ret = qsv_retrieve_enc_params(avctx, q);
233 if (ret < 0) {
234 av_log(avctx, AV_LOG_ERROR, "Error retrieving encoding parameters.\n");
235 return ret;
236 }
237
238 avctx->coded_frame = av_frame_alloc();
239 if (!avctx->coded_frame)
240 return AVERROR(ENOMEM);
241
242 q->avctx = avctx;
243
244 return 0;
245}
246
247static void clear_unused_frames(QSVEncContext *q)
248{
249 QSVFrame *cur = q->work_frames;
250 while (cur) {
251 if (cur->surface && !cur->surface->Data.Locked) {
252 cur->surface = NULL;
253 av_frame_unref(cur->frame);
254 }
255 cur = cur->next;
256 }
257}
258
259static int get_free_frame(QSVEncContext *q, QSVFrame **f)
260{
261 QSVFrame *frame, **last;
262
263 clear_unused_frames(q);
264
265 frame = q->work_frames;
266 last = &q->work_frames;
267 while (frame) {
268 if (!frame->surface) {
269 *f = frame;
270 return 0;
271 }
272
273 last = &frame->next;
274 frame = frame->next;
275 }
276
277 frame = av_mallocz(sizeof(*frame));
278 if (!frame)
279 return AVERROR(ENOMEM);
280 frame->frame = av_frame_alloc();
281 if (!frame->frame) {
282 av_freep(&frame);
283 return AVERROR(ENOMEM);
284 }
285 *last = frame;
286
287 *f = frame;
288
289 return 0;
290}
291
292static int submit_frame(QSVEncContext *q, const AVFrame *frame,
293 mfxFrameSurface1 **surface)
294{
295 QSVFrame *qf;
296 int ret;
297
298 ret = get_free_frame(q, &qf);
299 if (ret < 0)
300 return ret;
301
302 if (frame->format == AV_PIX_FMT_QSV) {
303 ret = av_frame_ref(qf->frame, frame);
304 if (ret < 0)
305 return ret;
306
307 qf->surface = (mfxFrameSurface1*)qf->frame->data[3];
308 *surface = qf->surface;
309 return 0;
310 }
311
312 /* make a copy if the input is not padded as libmfx requires */
66acb76b 313 if (frame->height & 31 || frame->linesize[0] & (q->width_align - 1)) {
72b7441a 314 qf->frame->height = FFALIGN(frame->height, 32);
66acb76b 315 qf->frame->width = FFALIGN(frame->width, q->width_align);
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316
317 ret = ff_get_buffer(q->avctx, qf->frame, AV_GET_BUFFER_FLAG_REF);
318 if (ret < 0)
319 return ret;
320
321 qf->frame->height = frame->height;
322 qf->frame->width = frame->width;
323 ret = av_frame_copy(qf->frame, frame);
324 if (ret < 0) {
325 av_frame_unref(qf->frame);
326 return ret;
327 }
328 } else {
329 ret = av_frame_ref(qf->frame, frame);
330 if (ret < 0)
331 return ret;
332 }
333
334 qf->surface_internal.Info = q->param.mfx.FrameInfo;
335
336 qf->surface_internal.Info.PicStruct =
337 !frame->interlaced_frame ? MFX_PICSTRUCT_PROGRESSIVE :
338 frame->top_field_first ? MFX_PICSTRUCT_FIELD_TFF :
339 MFX_PICSTRUCT_FIELD_BFF;
340 if (frame->repeat_pict == 1)
341 qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FIELD_REPEATED;
342 else if (frame->repeat_pict == 2)
343 qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FRAME_DOUBLING;
344 else if (frame->repeat_pict == 4)
345 qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FRAME_TRIPLING;
346
347 qf->surface_internal.Data.PitchLow = qf->frame->linesize[0];
348 qf->surface_internal.Data.Y = qf->frame->data[0];
349 qf->surface_internal.Data.UV = qf->frame->data[1];
350 qf->surface_internal.Data.TimeStamp = av_rescale_q(frame->pts, q->avctx->time_base, (AVRational){1, 90000});
351
352 qf->surface = &qf->surface_internal;
353
354 *surface = qf->surface;
355
356 return 0;
357}
358
359static void print_interlace_msg(AVCodecContext *avctx, QSVEncContext *q)
360{
361 if (q->param.mfx.CodecId == MFX_CODEC_AVC) {
362 if (q->param.mfx.CodecProfile == MFX_PROFILE_AVC_BASELINE ||
363 q->param.mfx.CodecLevel < MFX_LEVEL_AVC_21 ||
364 q->param.mfx.CodecLevel > MFX_LEVEL_AVC_41)
365 av_log(avctx, AV_LOG_WARNING,
366 "Interlaced coding is supported"
367 " at Main/High Profile Level 2.1-4.1\n");
368 }
369}
370
371int ff_qsv_encode(AVCodecContext *avctx, QSVEncContext *q,
372 AVPacket *pkt, const AVFrame *frame, int *got_packet)
373{
374 mfxBitstream bs = { { { 0 } } };
375
376 mfxFrameSurface1 *surf = NULL;
377 mfxSyncPoint sync = NULL;
378 int ret;
379
380 if (frame) {
381 ret = submit_frame(q, frame, &surf);
382 if (ret < 0) {
383 av_log(avctx, AV_LOG_ERROR, "Error submitting the frame for encoding.\n");
384 return ret;
385 }
386 }
387
388 ret = ff_alloc_packet(pkt, q->packet_size);
389 if (ret < 0) {
390 av_log(avctx, AV_LOG_ERROR, "Error allocating the output packet\n");
391 return ret;
392 }
393 bs.Data = pkt->data;
394 bs.MaxLength = pkt->size;
395
396 do {
397 ret = MFXVideoENCODE_EncodeFrameAsync(q->session, NULL, surf, &bs, &sync);
398 if (ret == MFX_WRN_DEVICE_BUSY)
399 av_usleep(1);
400 } while (ret > 0);
401
402 if (ret < 0)
403 return (ret == MFX_ERR_MORE_DATA) ? 0 : ff_qsv_error(ret);
404
405 if (ret == MFX_WRN_INCOMPATIBLE_VIDEO_PARAM && frame->interlaced_frame)
406 print_interlace_msg(avctx, q);
407
408 if (sync) {
409 MFXVideoCORE_SyncOperation(q->session, sync, 60000);
410
411 if (bs.FrameType & MFX_FRAMETYPE_I || bs.FrameType & MFX_FRAMETYPE_xI)
412 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
413 else if (bs.FrameType & MFX_FRAMETYPE_P || bs.FrameType & MFX_FRAMETYPE_xP)
414 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
415 else if (bs.FrameType & MFX_FRAMETYPE_B || bs.FrameType & MFX_FRAMETYPE_xB)
416 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
417
418 pkt->dts = av_rescale_q(bs.DecodeTimeStamp, (AVRational){1, 90000}, avctx->time_base);
419 pkt->pts = av_rescale_q(bs.TimeStamp, (AVRational){1, 90000}, avctx->time_base);
420 pkt->size = bs.DataLength;
421
422 if (bs.FrameType & MFX_FRAMETYPE_IDR ||
423 bs.FrameType & MFX_FRAMETYPE_xIDR)
424 pkt->flags |= AV_PKT_FLAG_KEY;
425
426 *got_packet = 1;
427 }
428
429 return 0;
430}
431
432int ff_qsv_enc_close(AVCodecContext *avctx, QSVEncContext *q)
433{
434 QSVFrame *cur;
435
436 MFXVideoENCODE_Close(q->session);
437 if (q->internal_session)
438 MFXClose(q->internal_session);
439 q->session = NULL;
440 q->internal_session = NULL;
441
442 cur = q->work_frames;
443 while (cur) {
444 q->work_frames = cur->next;
445 av_frame_free(&cur->frame);
446 av_freep(&cur);
447 cur = q->work_frames;
448 }
449
450 av_frame_free(&avctx->coded_frame);
451
452 return 0;
453}