FFmpeg: libavcodec/qsv.c Source File

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libavcodec

qsv.c

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1 /*

2 * Intel MediaSDK QSV codec-independent code

3 *

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 */

24 #include <string.h>

25 #include <sys/types.h>

27 #include <mfx/mfxvideo.h>

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"

35 #include "avcodec.h"

36 #include "internal.h"

37 #include "qsv_internal.h"

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 }

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 }

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 }

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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