doc: Add VAAPI encoders
[libav.git] / libavcodec / qsv.c
CommitLineData
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1/*
2 * Intel MediaSDK QSV encoder/decoder shared code
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include <mfx/mfxvideo.h>
66acb76b 22#include <mfx/mfxplugin.h>
d0a63d8b 23
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24#include <stdio.h>
25#include <string.h>
26
27#include "libavutil/avstring.h"
a0524d9b 28#include "libavutil/common.h"
d0a63d8b 29#include "libavutil/error.h"
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30#include "libavutil/hwcontext.h"
31#include "libavutil/hwcontext_qsv.h"
4ab61cd9 32#include "libavutil/imgutils.h"
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33
34#include "avcodec.h"
35#include "qsv_internal.h"
36
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37#if QSV_VERSION_ATLEAST(1, 12)
38#include "mfx/mfxvp8.h"
39#endif
40
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41int ff_qsv_codec_id_to_mfx(enum AVCodecID codec_id)
42{
43 switch (codec_id) {
44 case AV_CODEC_ID_H264:
45 return MFX_CODEC_AVC;
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46#if QSV_VERSION_ATLEAST(1, 8)
47 case AV_CODEC_ID_HEVC:
48 return MFX_CODEC_HEVC;
49#endif
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50 case AV_CODEC_ID_MPEG1VIDEO:
51 case AV_CODEC_ID_MPEG2VIDEO:
52 return MFX_CODEC_MPEG2;
53 case AV_CODEC_ID_VC1:
54 return MFX_CODEC_VC1;
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55#if QSV_VERSION_ATLEAST(1, 12)
56 case AV_CODEC_ID_VP8:
57 return MFX_CODEC_VP8;
58#endif
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59 default:
60 break;
61 }
62
63 return AVERROR(ENOSYS);
64}
65
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66int ff_qsv_profile_to_mfx(enum AVCodecID codec_id, int profile)
67{
68 if (profile == FF_PROFILE_UNKNOWN)
69 return MFX_PROFILE_UNKNOWN;
70 switch (codec_id) {
71 case AV_CODEC_ID_H264:
72 case AV_CODEC_ID_HEVC:
73 return profile;
74 case AV_CODEC_ID_VC1:
75 return 4 * profile + 1;
76 case AV_CODEC_ID_MPEG2VIDEO:
77 return 0x10 * profile;
78 }
79 return MFX_PROFILE_UNKNOWN;
80}
81
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82static const struct {
83 mfxStatus mfxerr;
84 int averr;
85 const char *desc;
86} qsv_errors[] = {
87 { MFX_ERR_NONE, 0, "success" },
88 { MFX_ERR_UNKNOWN, AVERROR_UNKNOWN, "unknown error" },
89 { MFX_ERR_NULL_PTR, AVERROR(EINVAL), "NULL pointer" },
90 { MFX_ERR_UNSUPPORTED, AVERROR(ENOSYS), "unsupported" },
91 { MFX_ERR_MEMORY_ALLOC, AVERROR(ENOMEM), "failed to allocate memory" },
92 { MFX_ERR_NOT_ENOUGH_BUFFER, AVERROR(ENOMEM), "insufficient input/output buffer" },
93 { MFX_ERR_INVALID_HANDLE, AVERROR(EINVAL), "invalid handle" },
94 { MFX_ERR_LOCK_MEMORY, AVERROR(EIO), "failed to lock the memory block" },
95 { MFX_ERR_NOT_INITIALIZED, AVERROR_BUG, "not initialized" },
96 { MFX_ERR_NOT_FOUND, AVERROR(ENOSYS), "specified object was not found" },
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97 /* the following 3 errors should always be handled explicitly, so those "mappings"
98 * are for completeness only */
99 { MFX_ERR_MORE_DATA, AVERROR_UNKNOWN, "expect more data at input" },
100 { MFX_ERR_MORE_SURFACE, AVERROR_UNKNOWN, "expect more surface at output" },
101 { MFX_ERR_MORE_BITSTREAM, AVERROR_UNKNOWN, "expect more bitstream at output" },
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102 { MFX_ERR_ABORTED, AVERROR_UNKNOWN, "operation aborted" },
103 { MFX_ERR_DEVICE_LOST, AVERROR(EIO), "device lost" },
104 { MFX_ERR_INCOMPATIBLE_VIDEO_PARAM, AVERROR(EINVAL), "incompatible video parameters" },
105 { MFX_ERR_INVALID_VIDEO_PARAM, AVERROR(EINVAL), "invalid video parameters" },
106 { MFX_ERR_UNDEFINED_BEHAVIOR, AVERROR_BUG, "undefined behavior" },
107 { MFX_ERR_DEVICE_FAILED, AVERROR(EIO), "device failed" },
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108 { MFX_ERR_INCOMPATIBLE_AUDIO_PARAM, AVERROR(EINVAL), "incompatible audio parameters" },
109 { MFX_ERR_INVALID_AUDIO_PARAM, AVERROR(EINVAL), "invalid audio parameters" },
110
111 { MFX_WRN_IN_EXECUTION, 0, "operation in execution" },
112 { MFX_WRN_DEVICE_BUSY, 0, "device busy" },
113 { MFX_WRN_VIDEO_PARAM_CHANGED, 0, "video parameters changed" },
114 { MFX_WRN_PARTIAL_ACCELERATION, 0, "partial acceleration" },
115 { MFX_WRN_INCOMPATIBLE_VIDEO_PARAM, 0, "incompatible video parameters" },
116 { MFX_WRN_VALUE_NOT_CHANGED, 0, "value is saturated" },
117 { MFX_WRN_OUT_OF_RANGE, 0, "value out of range" },
118 { MFX_WRN_FILTER_SKIPPED, 0, "filter skipped" },
119 { MFX_WRN_INCOMPATIBLE_AUDIO_PARAM, 0, "incompatible audio parameters" },
120};
121
122int ff_qsv_map_error(mfxStatus mfx_err, const char **desc)
d0a63d8b 123{
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124 int i;
125 for (i = 0; i < FF_ARRAY_ELEMS(qsv_errors); i++) {
126 if (qsv_errors[i].mfxerr == mfx_err) {
127 if (desc)
128 *desc = qsv_errors[i].desc;
129 return qsv_errors[i].averr;
130 }
d0a63d8b 131 }
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132 if (desc)
133 *desc = "unknown error";
134 return AVERROR_UNKNOWN;
135}
136
137int ff_qsv_print_error(void *log_ctx, mfxStatus err,
138 const char *error_string)
139{
140 const char *desc;
141 int ret;
142 ret = ff_qsv_map_error(err, &desc);
143 av_log(log_ctx, AV_LOG_ERROR, "%s: %s (%d)\n", error_string, desc, err);
144 return ret;
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145}
146
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147int ff_qsv_print_warning(void *log_ctx, mfxStatus err,
148 const char *warning_string)
149{
150 const char *desc;
151 int ret;
152 ret = ff_qsv_map_error(err, &desc);
153 av_log(log_ctx, AV_LOG_WARNING, "%s: %s (%d)\n", warning_string, desc, err);
154 return ret;
155}
156
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157static enum AVPixelFormat qsv_map_fourcc(uint32_t fourcc)
158{
159 switch (fourcc) {
160 case MFX_FOURCC_NV12: return AV_PIX_FMT_NV12;
161 case MFX_FOURCC_P010: return AV_PIX_FMT_P010;
162 case MFX_FOURCC_P8: return AV_PIX_FMT_PAL8;
163 }
164 return AV_PIX_FMT_NONE;
165}
166
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167int ff_qsv_map_pixfmt(enum AVPixelFormat format, uint32_t *fourcc)
168{
169 switch (format) {
170 case AV_PIX_FMT_YUV420P:
171 case AV_PIX_FMT_YUVJ420P:
21962261 172 case AV_PIX_FMT_NV12:
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173 *fourcc = MFX_FOURCC_NV12;
174 return AV_PIX_FMT_NV12;
92736c74 175 case AV_PIX_FMT_YUV420P10:
21962261 176 case AV_PIX_FMT_P010:
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177 *fourcc = MFX_FOURCC_P010;
178 return AV_PIX_FMT_P010;
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179 default:
180 return AVERROR(ENOSYS);
181 }
182}
183
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184int ff_qsv_find_surface_idx(QSVFramesContext *ctx, QSVFrame *frame)
185{
186 int i;
187 for (i = 0; i < ctx->nb_mids; i++) {
188 QSVMid *mid = &ctx->mids[i];
189 if (mid->handle == frame->surface.Data.MemId)
190 return i;
191 }
192 return AVERROR_BUG;
193}
194
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195static int qsv_load_plugins(mfxSession session, const char *load_plugins,
196 void *logctx)
197{
198 if (!load_plugins || !*load_plugins)
199 return 0;
200
201 while (*load_plugins) {
202 mfxPluginUID uid;
203 mfxStatus ret;
204 int i, err = 0;
205
206 char *plugin = av_get_token(&load_plugins, ":");
207 if (!plugin)
208 return AVERROR(ENOMEM);
209 if (strlen(plugin) != 2 * sizeof(uid.Data)) {
210 av_log(logctx, AV_LOG_ERROR, "Invalid plugin UID length\n");
211 err = AVERROR(EINVAL);
212 goto load_plugin_fail;
213 }
214
215 for (i = 0; i < sizeof(uid.Data); i++) {
216 err = sscanf(plugin + 2 * i, "%2hhx", uid.Data + i);
217 if (err != 1) {
218 av_log(logctx, AV_LOG_ERROR, "Invalid plugin UID\n");
219 err = AVERROR(EINVAL);
220 goto load_plugin_fail;
221 }
222
223 }
224
225 ret = MFXVideoUSER_Load(session, &uid, 1);
226 if (ret < 0) {
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227 char errorbuf[128];
228 snprintf(errorbuf, sizeof(errorbuf),
229 "Could not load the requested plugin '%s'", plugin);
230 err = ff_qsv_print_error(logctx, ret, errorbuf);
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231 goto load_plugin_fail;
232 }
233
234 if (*load_plugins)
235 load_plugins++;
236load_plugin_fail:
237 av_freep(&plugin);
238 if (err < 0)
239 return err;
240 }
241
242 return 0;
243
244}
245
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246int ff_qsv_init_internal_session(AVCodecContext *avctx, mfxSession *session,
247 const char *load_plugins)
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248{
249 mfxIMPL impl = MFX_IMPL_AUTO_ANY;
250 mfxVersion ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } };
251
252 const char *desc;
253 int ret;
254
255 ret = MFXInit(impl, &ver, session);
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256 if (ret < 0)
257 return ff_qsv_print_error(avctx, ret,
258 "Error initializing an internal MFX session");
d0a63d8b 259
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260 ret = qsv_load_plugins(*session, load_plugins, avctx);
261 if (ret < 0) {
262 av_log(avctx, AV_LOG_ERROR, "Error loading plugins\n");
263 return ret;
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264 }
265
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266 MFXQueryIMPL(*session, &impl);
267
268 switch (MFX_IMPL_BASETYPE(impl)) {
269 case MFX_IMPL_SOFTWARE:
270 desc = "software";
271 break;
272 case MFX_IMPL_HARDWARE:
273 case MFX_IMPL_HARDWARE2:
274 case MFX_IMPL_HARDWARE3:
275 case MFX_IMPL_HARDWARE4:
276 desc = "hardware accelerated";
277 break;
278 default:
279 desc = "unknown";
280 }
281
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282 av_log(avctx, AV_LOG_VERBOSE,
283 "Initialized an internal MFX session using %s implementation\n",
284 desc);
285
286 return 0;
287}
a0524d9b 288
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289static void mids_buf_free(void *opaque, uint8_t *data)
290{
291 AVBufferRef *hw_frames_ref = opaque;
292 av_buffer_unref(&hw_frames_ref);
293 av_freep(&data);
294}
295
296static AVBufferRef *qsv_create_mids(AVBufferRef *hw_frames_ref)
297{
298 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)hw_frames_ref->data;
299 AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
300 int nb_surfaces = frames_hwctx->nb_surfaces;
301
302 AVBufferRef *mids_buf, *hw_frames_ref1;
303 QSVMid *mids;
304 int i;
305
306 hw_frames_ref1 = av_buffer_ref(hw_frames_ref);
307 if (!hw_frames_ref1)
308 return NULL;
309
310 mids = av_mallocz_array(nb_surfaces, sizeof(*mids));
311 if (!mids) {
312 av_buffer_unref(&hw_frames_ref1);
313 return NULL;
314 }
315
316 mids_buf = av_buffer_create((uint8_t*)mids, nb_surfaces * sizeof(*mids),
317 mids_buf_free, hw_frames_ref1, 0);
318 if (!mids_buf) {
319 av_buffer_unref(&hw_frames_ref1);
320 av_freep(&mids);
321 return NULL;
322 }
323
324 for (i = 0; i < nb_surfaces; i++) {
325 QSVMid *mid = &mids[i];
326 mid->handle = frames_hwctx->surfaces[i].Data.MemId;
327 mid->hw_frames_ref = hw_frames_ref1;
328 }
329
330 return mids_buf;
331}
332
333static int qsv_setup_mids(mfxFrameAllocResponse *resp, AVBufferRef *hw_frames_ref,
334 AVBufferRef *mids_buf)
335{
336 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)hw_frames_ref->data;
337 AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
338 QSVMid *mids = (QSVMid*)mids_buf->data;
339 int nb_surfaces = frames_hwctx->nb_surfaces;
340 int i;
341
342 // the allocated size of the array is two larger than the number of
343 // surfaces, we store the references to the frames context and the
344 // QSVMid array there
345 resp->mids = av_mallocz_array(nb_surfaces + 2, sizeof(*resp->mids));
346 if (!resp->mids)
347 return AVERROR(ENOMEM);
348
349 for (i = 0; i < nb_surfaces; i++)
350 resp->mids[i] = &mids[i];
351 resp->NumFrameActual = nb_surfaces;
352
353 resp->mids[resp->NumFrameActual] = (mfxMemId)av_buffer_ref(hw_frames_ref);
354 if (!resp->mids[resp->NumFrameActual]) {
355 av_freep(&resp->mids);
356 return AVERROR(ENOMEM);
357 }
358
359 resp->mids[resp->NumFrameActual + 1] = av_buffer_ref(mids_buf);
360 if (!resp->mids[resp->NumFrameActual + 1]) {
361 av_buffer_unref((AVBufferRef**)&resp->mids[resp->NumFrameActual]);
362 av_freep(&resp->mids);
363 return AVERROR(ENOMEM);
364 }
365
366 return 0;
367}
368
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369static mfxStatus qsv_frame_alloc(mfxHDL pthis, mfxFrameAllocRequest *req,
370 mfxFrameAllocResponse *resp)
371{
372 QSVFramesContext *ctx = pthis;
4ab61cd9 373 int ret;
a0524d9b 374
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375 /* this should only be called from an encoder or decoder and
376 * only allocates video memory frames */
377 if (!(req->Type & (MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET |
378 MFX_MEMTYPE_VIDEO_MEMORY_PROCESSOR_TARGET)) ||
379 !(req->Type & (MFX_MEMTYPE_FROM_DECODE | MFX_MEMTYPE_FROM_ENCODE)))
a0524d9b 380 return MFX_ERR_UNSUPPORTED;
a0524d9b 381
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382 if (req->Type & MFX_MEMTYPE_EXTERNAL_FRAME) {
383 /* external frames -- fill from the caller-supplied frames context */
384 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
385 AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
386 mfxFrameInfo *i = &req->Info;
387 mfxFrameInfo *i1 = &frames_hwctx->surfaces[0].Info;
388
389 if (i->Width != i1->Width || i->Height != i1->Height ||
390 i->FourCC != i1->FourCC || i->ChromaFormat != i1->ChromaFormat) {
391 av_log(ctx->logctx, AV_LOG_ERROR, "Mismatching surface properties in an "
392 "allocation request: %dx%d %d %d vs %dx%d %d %d\n",
393 i->Width, i->Height, i->FourCC, i->ChromaFormat,
394 i1->Width, i1->Height, i1->FourCC, i1->ChromaFormat);
395 return MFX_ERR_UNSUPPORTED;
396 }
397
398 ret = qsv_setup_mids(resp, ctx->hw_frames_ctx, ctx->mids_buf);
399 if (ret < 0) {
400 av_log(ctx->logctx, AV_LOG_ERROR,
401 "Error filling an external frame allocation request\n");
402 return MFX_ERR_MEMORY_ALLOC;
403 }
404 } else if (req->Type & MFX_MEMTYPE_INTERNAL_FRAME) {
405 /* internal frames -- allocate a new hw frames context */
406 AVHWFramesContext *ext_frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
407 mfxFrameInfo *i = &req->Info;
408
409 AVBufferRef *frames_ref, *mids_buf;
410 AVHWFramesContext *frames_ctx;
411 AVQSVFramesContext *frames_hwctx;
412
413 frames_ref = av_hwframe_ctx_alloc(ext_frames_ctx->device_ref);
414 if (!frames_ref)
415 return MFX_ERR_MEMORY_ALLOC;
416
417 frames_ctx = (AVHWFramesContext*)frames_ref->data;
418 frames_hwctx = frames_ctx->hwctx;
419
420 frames_ctx->format = AV_PIX_FMT_QSV;
421 frames_ctx->sw_format = qsv_map_fourcc(i->FourCC);
422 frames_ctx->width = i->Width;
423 frames_ctx->height = i->Height;
424 frames_ctx->initial_pool_size = req->NumFrameSuggested;
425
426 frames_hwctx->frame_type = req->Type;
427
428 ret = av_hwframe_ctx_init(frames_ref);
429 if (ret < 0) {
430 av_log(ctx->logctx, AV_LOG_ERROR,
431 "Error initializing a frames context for an internal frame "
432 "allocation request\n");
433 av_buffer_unref(&frames_ref);
434 return MFX_ERR_MEMORY_ALLOC;
435 }
00aeedd8 436
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437 mids_buf = qsv_create_mids(frames_ref);
438 if (!mids_buf) {
439 av_buffer_unref(&frames_ref);
440 return MFX_ERR_MEMORY_ALLOC;
441 }
00aeedd8 442
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443 ret = qsv_setup_mids(resp, frames_ref, mids_buf);
444 av_buffer_unref(&mids_buf);
445 av_buffer_unref(&frames_ref);
446 if (ret < 0) {
447 av_log(ctx->logctx, AV_LOG_ERROR,
448 "Error filling an internal frame allocation request\n");
449 return MFX_ERR_MEMORY_ALLOC;
450 }
451 } else {
452 return MFX_ERR_UNSUPPORTED;
453 }
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454
455 return MFX_ERR_NONE;
456}
457
458static mfxStatus qsv_frame_free(mfxHDL pthis, mfxFrameAllocResponse *resp)
459{
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460 av_buffer_unref((AVBufferRef**)&resp->mids[resp->NumFrameActual]);
461 av_buffer_unref((AVBufferRef**)&resp->mids[resp->NumFrameActual + 1]);
00aeedd8 462 av_freep(&resp->mids);
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463 return MFX_ERR_NONE;
464}
465
466static mfxStatus qsv_frame_lock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
467{
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468 QSVMid *qsv_mid = mid;
469 AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)qsv_mid->hw_frames_ref->data;
470 AVQSVFramesContext *hw_frames_hwctx = hw_frames_ctx->hwctx;
4ab61cd9 471 int ret;
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472
473 if (qsv_mid->locked_frame)
474 return MFX_ERR_UNDEFINED_BEHAVIOR;
475
476 /* Allocate a system memory frame that will hold the mapped data. */
477 qsv_mid->locked_frame = av_frame_alloc();
478 if (!qsv_mid->locked_frame)
479 return MFX_ERR_MEMORY_ALLOC;
480 qsv_mid->locked_frame->format = hw_frames_ctx->sw_format;
481
482 /* wrap the provided handle in a hwaccel AVFrame */
483 qsv_mid->hw_frame = av_frame_alloc();
484 if (!qsv_mid->hw_frame)
485 goto fail;
486
487 qsv_mid->hw_frame->data[3] = (uint8_t*)&qsv_mid->surf;
488 qsv_mid->hw_frame->format = AV_PIX_FMT_QSV;
489
490 // doesn't really matter what buffer is used here
491 qsv_mid->hw_frame->buf[0] = av_buffer_alloc(1);
492 if (!qsv_mid->hw_frame->buf[0])
493 goto fail;
494
495 qsv_mid->hw_frame->width = hw_frames_ctx->width;
496 qsv_mid->hw_frame->height = hw_frames_ctx->height;
497
498 qsv_mid->hw_frame->hw_frames_ctx = av_buffer_ref(qsv_mid->hw_frames_ref);
499 if (!qsv_mid->hw_frame->hw_frames_ctx)
500 goto fail;
501
502 qsv_mid->surf.Info = hw_frames_hwctx->surfaces[0].Info;
503 qsv_mid->surf.Data.MemId = qsv_mid->handle;
504
505 /* map the data to the system memory */
506 ret = av_hwframe_map(qsv_mid->locked_frame, qsv_mid->hw_frame,
507 AV_HWFRAME_MAP_DIRECT);
508 if (ret < 0)
509 goto fail;
510
511 ptr->Pitch = qsv_mid->locked_frame->linesize[0];
512 ptr->Y = qsv_mid->locked_frame->data[0];
513 ptr->U = qsv_mid->locked_frame->data[1];
514 ptr->V = qsv_mid->locked_frame->data[1] + 1;
515
516 return MFX_ERR_NONE;
517fail:
518 av_frame_free(&qsv_mid->hw_frame);
519 av_frame_free(&qsv_mid->locked_frame);
520 return MFX_ERR_MEMORY_ALLOC;
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521}
522
523static mfxStatus qsv_frame_unlock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
524{
4ab61cd9 525 QSVMid *qsv_mid = mid;
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526
527 av_frame_free(&qsv_mid->locked_frame);
528 av_frame_free(&qsv_mid->hw_frame);
529
530 return MFX_ERR_NONE;
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531}
532
533static mfxStatus qsv_frame_get_hdl(mfxHDL pthis, mfxMemId mid, mfxHDL *hdl)
534{
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535 QSVMid *qsv_mid = (QSVMid*)mid;
536 *hdl = qsv_mid->handle;
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537 return MFX_ERR_NONE;
538}
539
540int ff_qsv_init_session_hwcontext(AVCodecContext *avctx, mfxSession *psession,
541 QSVFramesContext *qsv_frames_ctx,
542 const char *load_plugins, int opaque)
543{
544 static const mfxHandleType handle_types[] = {
545 MFX_HANDLE_VA_DISPLAY,
546 MFX_HANDLE_D3D9_DEVICE_MANAGER,
547 MFX_HANDLE_D3D11_DEVICE,
548 };
549 mfxFrameAllocator frame_allocator = {
550 .pthis = qsv_frames_ctx,
551 .Alloc = qsv_frame_alloc,
552 .Lock = qsv_frame_lock,
553 .Unlock = qsv_frame_unlock,
554 .GetHDL = qsv_frame_get_hdl,
555 .Free = qsv_frame_free,
556 };
557
558 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)qsv_frames_ctx->hw_frames_ctx->data;
559 AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
560 AVQSVDeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
561 mfxSession parent_session = device_hwctx->session;
562
563 mfxSession session;
564 mfxVersion ver;
565 mfxIMPL impl;
566 mfxHDL handle = NULL;
567 mfxHandleType handle_type;
568 mfxStatus err;
569
570 int i, ret;
571
572 err = MFXQueryIMPL(parent_session, &impl);
573 if (err == MFX_ERR_NONE)
574 err = MFXQueryVersion(parent_session, &ver);
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575 if (err != MFX_ERR_NONE)
576 return ff_qsv_print_error(avctx, err,
577 "Error querying the session attributes");
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578
579 for (i = 0; i < FF_ARRAY_ELEMS(handle_types); i++) {
580 err = MFXVideoCORE_GetHandle(parent_session, handle_types[i], &handle);
581 if (err == MFX_ERR_NONE) {
582 handle_type = handle_types[i];
583 break;
584 }
585 handle = NULL;
586 }
587 if (!handle) {
588 av_log(avctx, AV_LOG_VERBOSE, "No supported hw handle could be retrieved "
589 "from the session\n");
590 }
591
592 err = MFXInit(impl, &ver, &session);
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593 if (err != MFX_ERR_NONE)
594 return ff_qsv_print_error(avctx, err,
595 "Error initializing a child MFX session");
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596
597 if (handle) {
598 err = MFXVideoCORE_SetHandle(session, handle_type, handle);
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599 if (err != MFX_ERR_NONE)
600 return ff_qsv_print_error(avctx, err,
601 "Error setting a HW handle");
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602 }
603
604 ret = qsv_load_plugins(session, load_plugins, avctx);
605 if (ret < 0) {
606 av_log(avctx, AV_LOG_ERROR, "Error loading plugins\n");
607 return ret;
608 }
609
610 if (!opaque) {
4ab61cd9 611 qsv_frames_ctx->logctx = avctx;
a0524d9b 612
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613 /* allocate the memory ids for the external frames */
614 av_buffer_unref(&qsv_frames_ctx->mids_buf);
615 qsv_frames_ctx->mids_buf = qsv_create_mids(qsv_frames_ctx->hw_frames_ctx);
616 if (!qsv_frames_ctx->mids_buf)
617 return AVERROR(ENOMEM);
618 qsv_frames_ctx->mids = (QSVMid*)qsv_frames_ctx->mids_buf->data;
a0524d9b 619 qsv_frames_ctx->nb_mids = frames_hwctx->nb_surfaces;
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620
621 err = MFXVideoCORE_SetFrameAllocator(session, &frame_allocator);
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622 if (err != MFX_ERR_NONE)
623 return ff_qsv_print_error(avctx, err,
624 "Error setting a frame allocator");
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625 }
626
627 *psession = session;
628 return 0;
629}