2 * Intel MediaSDK QSV based VC-1 video decoder
4 * This file is part of FFmpeg.
6 * FFmpeg 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.
11 * FFmpeg 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/common.h"
25 #include "libavutil/fifo.h"
26 #include "libavutil/opt.h"
31 typedef struct QSVVC1Context {
37 static av_cold int qsv_decode_close(AVCodecContext *avctx)
39 QSVVC1Context *s = avctx->priv_data;
41 ff_qsv_decode_close(&s->qsv);
46 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
47 int *got_frame, AVPacket *avpkt)
49 QSVVC1Context *s = avctx->priv_data;
50 AVFrame *frame = data;
52 return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
55 static void qsv_decode_flush(AVCodecContext *avctx)
57 QSVVC1Context *s = avctx->priv_data;
58 ff_qsv_decode_reset(avctx, &s->qsv);
61 AVHWAccel ff_vc1_qsv_hwaccel = {
63 .type = AVMEDIA_TYPE_VIDEO,
64 .id = AV_CODEC_ID_VC1,
65 .pix_fmt = AV_PIX_FMT_QSV,
68 #define OFFSET(x) offsetof(QSVVC1Context, x)
69 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
70 static const AVOption options[] = {
71 { "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 },
75 static const AVClass class = {
76 .class_name = "vc1_qsv",
77 .item_name = av_default_item_name,
79 .version = LIBAVUTIL_VERSION_INT,
82 AVCodec ff_vc1_qsv_decoder = {
84 .long_name = NULL_IF_CONFIG_SMALL("VC-1 video (Intel Quick Sync Video acceleration)"),
85 .priv_data_size = sizeof(QSVVC1Context),
86 .type = AVMEDIA_TYPE_VIDEO,
87 .id = AV_CODEC_ID_VC1,
89 .decode = qsv_decode_frame,
90 .flush = qsv_decode_flush,
91 .close = qsv_decode_close,
92 .capabilities = AV_CODEC_CAP_DELAY,
94 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,