2 * Intel MediaSDK QSV based MPEG-2, VC-1 and VP8 decoders
4 * copyright (c) 2015 Anton Khirnov
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include <mfx/mfxvideo.h>
29 #include "libavutil/common.h"
30 #include "libavutil/fifo.h"
31 #include "libavutil/opt.h"
35 #include "qsv_internal.h"
39 typedef struct QSVOtherContext {
43 AVFifoBuffer *packet_fifo;
48 static void qsv_clear_buffers(QSVOtherContext *s)
51 while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
52 av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
53 av_packet_unref(&pkt);
56 av_packet_unref(&s->input_ref);
59 static av_cold int qsv_decode_close(AVCodecContext *avctx)
61 QSVOtherContext *s = avctx->priv_data;
63 #if CONFIG_VP8_QSV_DECODER
64 if (avctx->codec_id == AV_CODEC_ID_VP8)
65 av_freep(&s->qsv.load_plugins);
68 ff_qsv_decode_close(&s->qsv);
72 av_fifo_free(s->packet_fifo);
77 static av_cold int qsv_decode_init(AVCodecContext *avctx)
79 QSVOtherContext *s = avctx->priv_data;
82 #if CONFIG_VP8_QSV_DECODER
83 if (avctx->codec_id == AV_CODEC_ID_VP8) {
84 static const char *uid_vp8dec_hw = "f622394d8d87452f878c51f2fc9b4131";
86 av_freep(&s->qsv.load_plugins);
87 s->qsv.load_plugins = av_strdup(uid_vp8dec_hw);
88 if (!s->qsv.load_plugins)
89 return AVERROR(ENOMEM);
93 s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
94 if (!s->packet_fifo) {
95 ret = AVERROR(ENOMEM);
101 qsv_decode_close(avctx);
105 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
106 int *got_frame, AVPacket *avpkt)
108 QSVOtherContext *s = avctx->priv_data;
109 AVFrame *frame = data;
112 /* buffer the input packet */
114 AVPacket input_ref = { 0 };
116 if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
117 ret = av_fifo_realloc2(s->packet_fifo,
118 av_fifo_size(s->packet_fifo) + sizeof(input_ref));
123 ret = av_packet_ref(&input_ref, avpkt);
126 av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
129 /* process buffered data */
130 while (!*got_frame) {
131 if (s->input_ref.size <= 0) {
133 if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
134 return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);
135 /* in progress of reinit, no read from fifo and keep the buffer_pkt */
136 if (!s->qsv.reinit_flag) {
137 av_packet_unref(&s->input_ref);
138 av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
142 ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->input_ref);
144 /* Drop input packet when failed to decode the packet. Otherwise,
145 the decoder will keep decoding the failure packet. */
146 av_packet_unref(&s->input_ref);
150 if (s->qsv.reinit_flag)
153 s->input_ref.size -= ret;
154 s->input_ref.data += ret;
160 static void qsv_decode_flush(AVCodecContext *avctx)
162 QSVOtherContext *s = avctx->priv_data;
164 qsv_clear_buffers(s);
165 ff_qsv_decode_flush(avctx, &s->qsv);
168 #define OFFSET(x) offsetof(QSVOtherContext, x)
169 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
170 static const AVOption options[] = {
171 { "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 }, 1, INT_MAX, VD },
175 #if CONFIG_MPEG2_QSV_DECODER
176 static const AVClass mpeg2_qsv_class = {
177 .class_name = "mpeg2_qsv",
178 .item_name = av_default_item_name,
180 .version = LIBAVUTIL_VERSION_INT,
183 AVCodec ff_mpeg2_qsv_decoder = {
185 .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video (Intel Quick Sync Video acceleration)"),
186 .priv_data_size = sizeof(QSVOtherContext),
187 .type = AVMEDIA_TYPE_VIDEO,
188 .id = AV_CODEC_ID_MPEG2VIDEO,
189 .init = qsv_decode_init,
190 .decode = qsv_decode_frame,
191 .flush = qsv_decode_flush,
192 .close = qsv_decode_close,
193 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
194 .priv_class = &mpeg2_qsv_class,
195 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
198 .hw_configs = ff_qsv_hw_configs,
199 .wrapper_name = "qsv",
203 #if CONFIG_VC1_QSV_DECODER
204 static const AVClass vc1_qsv_class = {
205 .class_name = "vc1_qsv",
206 .item_name = av_default_item_name,
208 .version = LIBAVUTIL_VERSION_INT,
211 AVCodec ff_vc1_qsv_decoder = {
213 .long_name = NULL_IF_CONFIG_SMALL("VC-1 video (Intel Quick Sync Video acceleration)"),
214 .priv_data_size = sizeof(QSVOtherContext),
215 .type = AVMEDIA_TYPE_VIDEO,
216 .id = AV_CODEC_ID_VC1,
217 .init = qsv_decode_init,
218 .decode = qsv_decode_frame,
219 .flush = qsv_decode_flush,
220 .close = qsv_decode_close,
221 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
222 .priv_class = &vc1_qsv_class,
223 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
226 .hw_configs = ff_qsv_hw_configs,
227 .wrapper_name = "qsv",
231 #if CONFIG_VP8_QSV_DECODER
232 static const AVClass vp8_qsv_class = {
233 .class_name = "vp8_qsv",
234 .item_name = av_default_item_name,
236 .version = LIBAVUTIL_VERSION_INT,
239 AVCodec ff_vp8_qsv_decoder = {
241 .long_name = NULL_IF_CONFIG_SMALL("VP8 video (Intel Quick Sync Video acceleration)"),
242 .priv_data_size = sizeof(QSVOtherContext),
243 .type = AVMEDIA_TYPE_VIDEO,
244 .id = AV_CODEC_ID_VP8,
245 .init = qsv_decode_init,
246 .decode = qsv_decode_frame,
247 .flush = qsv_decode_flush,
248 .close = qsv_decode_close,
249 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
250 .priv_class = &vp8_qsv_class,
251 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
254 .hw_configs = ff_qsv_hw_configs,
255 .wrapper_name = "qsv",