Intel QSV SDK provide screen capture plugin starting from API ver 1.17 as runtime loadable plugin for QSV decoder.
* add API version selection while initialization of QSV context (default is still 1.1 for usual encoding/decoding) --- configure | 2 + libavcodec/Makefile | 1 + libavcodec/allcodecs.c | 1 + libavcodec/qsv.c | 6 +- libavcodec/qsv_internal.h | 2 +- libavcodec/qsvdec.c | 12 ++- libavcodec/qsvdec.h | 5 + libavcodec/qsvdec_screen.c | 250 +++++++++++++++++++++++++++++++++++++++++++++ libavcodec/qsvenc.c | 3 +- 9 files changed, 272 insertions(+), 10 deletions(-) create mode 100644 libavcodec/qsvdec_screen.c diff --git a/configure b/configure index 3a146ed857..942765e8a3 100755 --- a/configure +++ b/configure @@ -2520,6 +2520,8 @@ rv20_decoder_select="h263_decoder" rv20_encoder_select="h263_encoder" rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp" rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp" +screen_qsv_decoder_deps="libmfx" +screen_qsv_decoder_select="qsvdec" screenpresso_decoder_select="zlib" shorten_decoder_select="bswapdsp" sipr_decoder_select="lsp" diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 59029a853c..7a2052d4c7 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -519,6 +519,7 @@ OBJS-$(CONFIG_S302M_DECODER) += s302m.o OBJS-$(CONFIG_S302M_ENCODER) += s302menc.o OBJS-$(CONFIG_SANM_DECODER) += sanm.o OBJS-$(CONFIG_SCPR_DECODER) += scpr.o +OBJS-$(CONFIG_SCREEN_QSV_DECODER) += qsvdec_screen.o OBJS-$(CONFIG_SCREENPRESSO_DECODER) += screenpresso.o OBJS-$(CONFIG_SDX2_DPCM_DECODER) += dpcm.o OBJS-$(CONFIG_SGI_DECODER) += sgidec.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 0243f47358..d572c3f27c 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -315,6 +315,7 @@ static void register_all(void) REGISTER_ENCDEC (S302M, s302m); REGISTER_DECODER(SANM, sanm); REGISTER_DECODER(SCPR, scpr); + REGISTER_DECODER(SCREEN_QSV, screen_qsv); REGISTER_DECODER(SCREENPRESSO, screenpresso); REGISTER_DECODER(SDX2_DPCM, sdx2_dpcm); REGISTER_ENCDEC (SGI, sgi); diff --git a/libavcodec/qsv.c b/libavcodec/qsv.c index b9e2cd990d..80d0d4af37 100644 --- a/libavcodec/qsv.c +++ b/libavcodec/qsv.c @@ -242,15 +242,13 @@ load_plugin_fail: } int ff_qsv_init_internal_session(AVCodecContext *avctx, mfxSession *session, - const char *load_plugins) + const char *load_plugins, mfxVersion api_ver) { mfxIMPL impl = MFX_IMPL_AUTO_ANY; - mfxVersion ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } }; - const char *desc; int ret; - ret = MFXInit(impl, &ver, session); + ret = MFXInit(impl, &api_ver, session); if (ret < 0) return ff_qsv_print_error(avctx, ret, "Error initializing an internal MFX session"); diff --git a/libavcodec/qsv_internal.h b/libavcodec/qsv_internal.h index c0305508dd..ebc3082e22 100644 --- a/libavcodec/qsv_internal.h +++ b/libavcodec/qsv_internal.h @@ -88,7 +88,7 @@ int ff_qsv_profile_to_mfx(enum AVCodecID codec_id, int profile); int ff_qsv_map_pixfmt(enum AVPixelFormat format, uint32_t *fourcc); int ff_qsv_init_internal_session(AVCodecContext *avctx, mfxSession *session, - const char *load_plugins); + const char *load_plugins, mfxVersion api_ver); int ff_qsv_init_session_device(AVCodecContext *avctx, mfxSession *psession, AVBufferRef *device_ref, const char *load_plugins); diff --git a/libavcodec/qsvdec.c b/libavcodec/qsvdec.c index c00817f1d9..9aa139b1e8 100644 --- a/libavcodec/qsvdec.c +++ b/libavcodec/qsvdec.c @@ -41,8 +41,9 @@ #include "qsv_internal.h" #include "qsvdec.h" -static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session, - AVBufferRef *hw_frames_ref, AVBufferRef *hw_device_ref) +int ff_qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session, + AVBufferRef *hw_frames_ref, AVBufferRef *hw_device_ref, + mfxVersion api_ver) { int ret; @@ -83,7 +84,7 @@ static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession ses } else { if (!q->internal_session) { ret = ff_qsv_init_internal_session(avctx, &q->internal_session, - q->load_plugins); + q->load_plugins, api_ver); if (ret < 0) return ret; } @@ -145,7 +146,10 @@ static int qsv_decode_init(AVCodecContext *avctx, QSVContext *q) iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY; q->iopattern = iopattern; - ret = qsv_init_session(avctx, q, session, avctx->hw_frames_ctx, avctx->hw_device_ctx); + mfxVersion api_ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } }; + + ret = ff_qsv_init_session(avctx, q, session, avctx->hw_frames_ctx, + avctx->hw_device_ctx, api_ver); if (ret < 0) { av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n"); return ret; diff --git a/libavcodec/qsvdec.h b/libavcodec/qsvdec.h index 4e86e4b7f8..704d308fb3 100644 --- a/libavcodec/qsvdec.h +++ b/libavcodec/qsvdec.h @@ -70,6 +70,11 @@ typedef struct QSVContext { int nb_ext_buffers; } QSVContext; +int ff_qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session, + AVBufferRef *hw_frames_ref, AVBufferRef *hw_device_ref, + mfxVersion api_ver); + + int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q, AVFrame *frame, int *got_frame, AVPacket *pkt); diff --git a/libavcodec/qsvdec_screen.c b/libavcodec/qsvdec_screen.c new file mode 100644 index 0000000000..aeea851333 --- /dev/null +++ b/libavcodec/qsvdec_screen.c @@ -0,0 +1,250 @@ +/* + * Intel QSV screen capture decoder + * + * This file is part of FFmpeg. + * + * Copyright (C) 2017 Alexander Bilyak <bilyak.alexan...@gmail.com> + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * as published by the Free Software Foundation; either version 2.1 + * of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Intel QSV Screen capture decoder interface + * @author Alexander Bilyak <bilyak.alexan...@gmail.com> + * @note This "decoder" uses intel QSV decoder plugin for screen capturing. + * It does not decode incoming packets; moreover: input packets should be empty. + * Make sure executable could find appropriate plugin during runtime. + */ + +#include <stdint.h> +#include <string.h> + +#include <mfx/mfxvideo.h> +#include <mfx/mfxsc.h> + +#include "libavutil/common.h" +#include "libavutil/fifo.h" +#include "libavutil/opt.h" + +#include "avcodec.h" +#include "internal.h" +#include "qsv_internal.h" +#include "qsvdec.h" +#include "qsv.h" + +/** + * QSV screen capture decoder context + */ +typedef struct QSVScreenContext { + AVClass *class; /**< Class for private options */ + QSVContext qsv; /**< QSV context used for initialization */ + + mfxExtScreenCaptureParam param; /**< Screen capture parameters */ + + int draw_mouse; /**< Draw mouse cursor (private option) */ +} QSVScreenContext; + +/** + * Closes QSV screen decoder (public decoder API). + * + * @param avctx Context from avcodec core + * + * @return 0 on success, a negative AVERROR on error + */ +static av_cold int qsv_screen_decode_close(AVCodecContext *avctx) +{ + QSVScreenContext *s = avctx->priv_data; + + ff_qsv_decode_close(&s->qsv); + + return 0; +} + +/** + * Flushes QSV screen decoder (public decoder API). + * + * @param avctx Context from avcodec core + */ +static void qsv_screen_decode_flush(AVCodecContext *avctx) +{ + QSVScreenContext *s = avctx->priv_data; + + ff_qsv_decode_flush(avctx, &s->qsv); +} + +/** + * Init internal QSV context for screen capturing + * + * @param avctx Context from avcodec core + * + * @param q QSVContext to be initialized + * + * @return 0 on success, a negative AVERROR on error + */ +static int qsv_screen_context_init(AVCodecContext *avctx, QSVContext *q) +{ + int ret; + mfxSession session = NULL; + mfxVideoParam param = { 0 }; + mfxVersion api_ver = { { 17, 1 } }; + + QSVScreenContext *ctx = avctx->priv_data; + mfxExtBuffer* buffers = (mfxExtBuffer*)&ctx->param; + + ff_qsv_map_pixfmt(AV_PIX_FMT_NV12, &q->fourcc); + + avctx->pix_fmt = AV_PIX_FMT_NV12; + avctx->field_order = AV_FIELD_TT; + avctx->level = FF_LEVEL_UNKNOWN; + avctx->profile = FF_PROFILE_UNKNOWN; + + q->async_fifo = av_fifo_alloc((1 + q->async_depth) * + (sizeof(mfxSyncPoint*) + sizeof(QSVFrame*))); + if (!q->async_fifo) + return AVERROR(ENOMEM); + + q->iopattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY; + + q->avctx_internal = avcodec_alloc_context3(NULL); + if (!q->avctx_internal) + return AVERROR(ENOMEM); + + q->orig_pix_fmt = AV_PIX_FMT_NONE; + + ret = ff_qsv_init_session(avctx, q, session, avctx->hw_frames_ctx, avctx->hw_device_ctx, api_ver); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n"); + return ret; + } + + param.mfx.CodecId = MFX_CODEC_CAPTURE; + + param.mfx.FrameInfo.FourCC = q->fourcc; + param.mfx.FrameInfo.Width = FFALIGN(avctx->width, 16); + param.mfx.FrameInfo.CropW = avctx->width; + param.mfx.FrameInfo.Height = FFALIGN(avctx->height, 16); + param.mfx.FrameInfo.CropH = avctx->height; + param.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420; + + ctx->param.Header.BufferId = MFX_EXTBUFF_SCREEN_CAPTURE_PARAM; + ctx->param.Header.BufferSz = sizeof(mfxExtScreenCaptureParam); + ctx->param.EnableCursorCapture = ctx->draw_mouse; + + param.ExtParam = &buffers; + param.NumExtParam = 1; + + param.IOPattern = q->iopattern; + + ret = MFXVideoDECODE_Init(q->session, ¶m); + if (ret < 0) + return ff_qsv_print_error(avctx, ret, + "Error initializing the MFX video decoder"); + + q->frame_info = param.mfx.FrameInfo; + + return 0; +} + +/** + * Init QSV screen decoder and loads screen capture plugin (public decoder API). + * + * @param avctx Context from avcodec core + * + * @return 0 on success, a negative AVERROR on error + */ +static av_cold int qsv_screen_decode_init(AVCodecContext *avctx) +{ + QSVScreenContext *s = avctx->priv_data; + int ret; + + static const char *uid_screendec_hw = "22d62c07e672408fbb4cc20ed7a053e4"; + + av_freep(&s->qsv.load_plugins); + s->qsv.load_plugins = av_strdup(uid_screendec_hw); + if (!s->qsv.load_plugins) + return AVERROR(ENOMEM); + + ret = qsv_screen_context_init(avctx, &s->qsv); + if (ret < 0) + return ret; + + return 0; +} + +/** + * Produce frame from screen capturing plugin (public decoder API). + * + * @param avctx Context from avcodec core + * + * @param[out] data Pointer to AVFrame where data will be stored + * + * @param[out] got_frame zero, if no frame produced, otherwise - nonzero + * + * @param[in] avpkt Input AVPacket. Should be non-NULL and have zero sized buf + * + * @return produced packet size on success, a negative AVERROR on error + */ +static int qsv_screen_decode_frame(AVCodecContext *avctx, void *data, + int *got_frame, AVPacket *avpkt) +{ + QSVScreenContext *ctx = avctx->priv_data; + AVFrame *frame = data; + int ret; + + if (avpkt->size) { + av_log(avctx, AV_LOG_ERROR, "pkt should be empty with 0-size buf\n"); + } + + while (!*got_frame) { + ret = ff_qsv_process_data(avctx, &ctx->qsv, frame, got_frame, avpkt); + if (ret < 0) + return ret; + } + + return avpkt->size; +} + +#define OFFSET(x) offsetof(QSVScreenContext, x) +#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM +static const AVOption screen_options[] = { + { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 0, INT_MAX, VD }, + { "draw_mouse", "Capture the mouse pointer", OFFSET(draw_mouse), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, VD }, + { NULL }, +}; + + +static const AVClass screen_qsv_class = { + .class_name = "screen_qsv", + .item_name = av_default_item_name, + .option = screen_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +AVCodec ff_screen_qsv_decoder = { + .name = "screen_qsv", + .long_name = NULL_IF_CONFIG_SMALL("Fake decoder for screen capturing with intel QSV plugin"), + .priv_data_size = sizeof(QSVScreenContext), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_RAWVIDEO, + .init = qsv_screen_decode_init, + .decode = qsv_screen_decode_frame, + .flush = qsv_screen_decode_flush, + .close = qsv_screen_decode_close, + .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING, + .priv_class = &screen_qsv_class, + .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12, + AV_PIX_FMT_NONE }, +}; diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c index 5eb506fb76..04399819c4 100644 --- a/libavcodec/qsvenc.c +++ b/libavcodec/qsvenc.c @@ -708,8 +708,9 @@ static int qsvenc_init_session(AVCodecContext *avctx, QSVEncContext *q) q->session = q->internal_session; } else { + mfxVersion api_ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } }; ret = ff_qsv_init_internal_session(avctx, &q->internal_session, - q->load_plugins); + q->load_plugins, api_ver); if (ret < 0) return ret; -- 2.13.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel