2 * Intel MediaSDK QSV based H.264 / HEVC decoder
4 * copyright (c) 2013 Luca Barbato
5 * copyright (c) 2015 Anton Khirnov
7 * This file is part of FFmpeg.
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.
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.
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
28 #include <mfx/mfxvideo.h>
30 #include "libavutil/common.h"
31 #include "libavutil/fifo.h"
32 #include "libavutil/opt.h"
43 typedef struct QSVH2645Context {
49 // the filter for converting to Annex B
50 AVBitStreamFilterContext *bsf;
54 static av_cold int qsv_decode_close(AVCodecContext *avctx)
56 QSVH2645Context *s = avctx->priv_data;
58 ff_qsv_decode_close(&s->qsv);
60 av_bitstream_filter_close(s->bsf);
65 static av_cold int qsv_decode_init(AVCodecContext *avctx)
67 QSVH2645Context *s = avctx->priv_data;
70 if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
71 static const char *uid_hevcenc_sw = "15dd936825ad475ea34e35f3f54217a6";
73 if (s->qsv.load_plugins[0]) {
74 av_log(avctx, AV_LOG_WARNING,
75 "load_plugins is not empty, but load_plugin is not set to 'none'."
76 "The load_plugin value will be ignored.\n");
78 av_freep(&s->qsv.load_plugins);
79 s->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
80 if (!s->qsv.load_plugins)
81 return AVERROR(ENOMEM);
85 if (avctx->codec_id == AV_CODEC_ID_H264)
86 s->bsf = av_bitstream_filter_init("h264_mp4toannexb");
88 s->bsf = av_bitstream_filter_init("hevc_mp4toannexb");
90 ret = AVERROR(ENOMEM);
96 qsv_decode_close(avctx);
100 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
101 int *got_frame, AVPacket *avpkt)
103 QSVH2645Context *s = avctx->priv_data;
104 AVFrame *frame = data;
106 uint8_t *p_filtered = NULL;
107 int n_filtered = NULL;
108 AVPacket pkt_filtered = { 0 };
111 if (avpkt->size > 3 && !avpkt->data[0] &&
112 !avpkt->data[1] && !avpkt->data[2] && 1==avpkt->data[3]) {
113 /* we already have annex-b prefix */
114 return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
117 /* no annex-b prefix. try to restore: */
118 ret = av_bitstream_filter_filter(s->bsf, avctx, "private_spspps_buf",
119 &p_filtered, &n_filtered,
120 avpkt->data, avpkt->size, 0);
122 pkt_filtered.pts = avpkt->pts;
123 pkt_filtered.data = p_filtered;
124 pkt_filtered.size = n_filtered;
126 ret = ff_qsv_decode(avctx, &s->qsv, frame, got_frame, &pkt_filtered);
128 if (p_filtered != avpkt->data)
130 return ret > 0 ? avpkt->size : ret;
135 return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
138 static void qsv_decode_flush(AVCodecContext *avctx)
140 QSVH2645Context *s = avctx->priv_data;
141 ff_qsv_decode_reset(avctx, &s->qsv);
144 #define OFFSET(x) offsetof(QSVH2645Context, x)
145 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
147 #if CONFIG_HEVC_QSV_DECODER
148 AVHWAccel ff_hevc_qsv_hwaccel = {
150 .type = AVMEDIA_TYPE_VIDEO,
151 .id = AV_CODEC_ID_HEVC,
152 .pix_fmt = AV_PIX_FMT_QSV,
155 static const AVOption hevc_options[] = {
156 { "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 },
158 { "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_HEVC_SW }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_SW, VD, "load_plugin" },
159 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VD, "load_plugin" },
160 { "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
162 { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
163 OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
167 static const AVClass hevc_class = {
168 .class_name = "hevc_qsv",
169 .item_name = av_default_item_name,
170 .option = hevc_options,
171 .version = LIBAVUTIL_VERSION_INT,
174 AVCodec ff_hevc_qsv_decoder = {
176 .long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
177 .priv_data_size = sizeof(QSVH2645Context),
178 .type = AVMEDIA_TYPE_VIDEO,
179 .id = AV_CODEC_ID_HEVC,
180 .init = qsv_decode_init,
181 .decode = qsv_decode_frame,
182 .flush = qsv_decode_flush,
183 .close = qsv_decode_close,
184 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
185 .priv_class = &hevc_class,
186 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
192 #if CONFIG_H264_QSV_DECODER
193 AVHWAccel ff_h264_qsv_hwaccel = {
195 .type = AVMEDIA_TYPE_VIDEO,
196 .id = AV_CODEC_ID_H264,
197 .pix_fmt = AV_PIX_FMT_QSV,
200 static const AVOption options[] = {
201 { "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 },
205 static const AVClass class = {
206 .class_name = "h264_qsv",
207 .item_name = av_default_item_name,
209 .version = LIBAVUTIL_VERSION_INT,
212 AVCodec ff_h264_qsv_decoder = {
214 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"),
215 .priv_data_size = sizeof(QSVH2645Context),
216 .type = AVMEDIA_TYPE_VIDEO,
217 .id = AV_CODEC_ID_H264,
218 .init = qsv_decode_init,
219 .decode = qsv_decode_frame,
220 .flush = qsv_decode_flush,
221 .close = qsv_decode_close,
222 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
223 .priv_class = &class,
224 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,