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97 lines
2.9 KiB
97 lines
2.9 KiB
/* |
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* Intel MediaSDK QSV based MPEG2 video decoder |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdint.h> |
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#include <string.h> |
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#include "libavutil/common.h" |
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#include "libavutil/opt.h" |
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#include "avcodec.h" |
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#include "qsvdec.h" |
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typedef struct QSVMPEG2Context { |
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AVClass *class; |
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QSVContext qsv; |
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} QSVMPEG2Context; |
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static av_cold int qsv_decode_close(AVCodecContext *avctx) |
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{ |
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QSVMPEG2Context *s = avctx->priv_data; |
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ff_qsv_decode_close(&s->qsv); |
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return 0; |
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} |
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static av_cold int qsv_decode_init(AVCodecContext *avctx) |
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{ |
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return 0; |
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} |
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static int qsv_decode_frame(AVCodecContext *avctx, void *data, |
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int *got_frame, AVPacket *avpkt) |
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{ |
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QSVMPEG2Context *s = avctx->priv_data; |
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AVFrame *frame = data; |
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return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt); |
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} |
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static void qsv_decode_flush(AVCodecContext *avctx) |
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{ |
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QSVMPEG2Context *s = avctx->priv_data; |
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ff_qsv_decode_reset(avctx, &s->qsv); |
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} |
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AVHWAccel ff_mpeg2_qsv_hwaccel = { |
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.name = "mpeg2_qsv", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_MPEG2VIDEO, |
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.pix_fmt = AV_PIX_FMT_QSV, |
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}; |
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#define OFFSET(x) offsetof(QSVMPEG2Context, x) |
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#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM |
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static const AVOption options[] = { |
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{ "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 }, |
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{ NULL }, |
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}; |
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static const AVClass class = { |
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.class_name = "mpeg2_qsv", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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AVCodec ff_mpeg2_qsv_decoder = { |
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.name = "mpeg2_qsv", |
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.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video (Intel Quick Sync Video acceleration)"), |
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.priv_data_size = sizeof(QSVMPEG2Context), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_MPEG2VIDEO, |
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.init = qsv_decode_init, |
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.decode = qsv_decode_frame, |
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.flush = qsv_decode_flush, |
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.close = qsv_decode_close, |
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.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1, |
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.priv_class = &class, |
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};
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