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path: root/libavcodec/qsvdec_other.c (plain)
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1/*
2 * Intel MediaSDK QSV based MPEG-2, VC-1 and VP8 decoders
3 *
4 * copyright (c) 2015 Anton Khirnov
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23
24#include <stdint.h>
25#include <string.h>
26
27#include <mfx/mfxvideo.h>
28
29#include "libavutil/common.h"
30#include "libavutil/fifo.h"
31#include "libavutil/opt.h"
32
33#include "avcodec.h"
34#include "internal.h"
35#include "qsv_internal.h"
36#include "qsvdec.h"
37#include "qsv.h"
38
39typedef struct QSVOtherContext {
40 AVClass *class;
41 QSVContext qsv;
42
43 AVFifoBuffer *packet_fifo;
44
45 AVPacket input_ref;
46} QSVOtherContext;
47
48static void qsv_clear_buffers(QSVOtherContext *s)
49{
50 AVPacket pkt;
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);
54 }
55
56 av_packet_unref(&s->input_ref);
57}
58
59static av_cold int qsv_decode_close(AVCodecContext *avctx)
60{
61 QSVOtherContext *s = avctx->priv_data;
62
63 ff_qsv_decode_close(&s->qsv);
64
65 qsv_clear_buffers(s);
66
67 av_fifo_free(s->packet_fifo);
68
69 return 0;
70}
71
72static av_cold int qsv_decode_init(AVCodecContext *avctx)
73{
74 QSVOtherContext *s = avctx->priv_data;
75 int ret;
76
77#if CONFIG_VP8_QSV_DECODER
78 if (avctx->codec_id == AV_CODEC_ID_VP8) {
79 static const char *uid_vp8dec_hw = "f622394d8d87452f878c51f2fc9b4131";
80
81 av_freep(&s->qsv.load_plugins);
82 s->qsv.load_plugins = av_strdup(uid_vp8dec_hw);
83 if (!s->qsv.load_plugins)
84 return AVERROR(ENOMEM);
85 }
86#endif
87
88 s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
89 if (!s->packet_fifo) {
90 ret = AVERROR(ENOMEM);
91 goto fail;
92 }
93
94 return 0;
95fail:
96 qsv_decode_close(avctx);
97 return ret;
98}
99
100static int qsv_decode_frame(AVCodecContext *avctx, void *data,
101 int *got_frame, AVPacket *avpkt)
102{
103 QSVOtherContext *s = avctx->priv_data;
104 AVFrame *frame = data;
105 int ret;
106
107 /* buffer the input packet */
108 if (avpkt->size) {
109 AVPacket input_ref = { 0 };
110
111 if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
112 ret = av_fifo_realloc2(s->packet_fifo,
113 av_fifo_size(s->packet_fifo) + sizeof(input_ref));
114 if (ret < 0)
115 return ret;
116 }
117
118 ret = av_packet_ref(&input_ref, avpkt);
119 if (ret < 0)
120 return ret;
121 av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
122 }
123
124 /* process buffered data */
125 while (!*got_frame) {
126 if (s->input_ref.size <= 0) {
127 /* no more data */
128 if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
129 return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);
130
131 av_packet_unref(&s->input_ref);
132 av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
133 }
134
135 ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->input_ref);
136 if (ret < 0)
137 return ret;
138
139 s->input_ref.size -= ret;
140 s->input_ref.data += ret;
141 }
142
143 return avpkt->size;
144}
145
146static void qsv_decode_flush(AVCodecContext *avctx)
147{
148 QSVOtherContext *s = avctx->priv_data;
149
150 qsv_clear_buffers(s);
151 ff_qsv_decode_flush(avctx, &s->qsv);
152}
153
154#define OFFSET(x) offsetof(QSVOtherContext, x)
155#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
156static const AVOption options[] = {
157 { "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 { NULL },
159};
160
161#if CONFIG_MPEG2_QSV_HWACCEL
162AVHWAccel ff_mpeg2_qsv_hwaccel = {
163 .name = "mpeg2_qsv",
164 .type = AVMEDIA_TYPE_VIDEO,
165 .id = AV_CODEC_ID_MPEG2VIDEO,
166 .pix_fmt = AV_PIX_FMT_QSV,
167};
168#endif
169
170#if CONFIG_MPEG2_QSV_DECODER
171static const AVClass mpeg2_qsv_class = {
172 .class_name = "mpeg2_qsv",
173 .item_name = av_default_item_name,
174 .option = options,
175 .version = LIBAVUTIL_VERSION_INT,
176};
177
178AVCodec ff_mpeg2_qsv_decoder = {
179 .name = "mpeg2_qsv",
180 .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video (Intel Quick Sync Video acceleration)"),
181 .priv_data_size = sizeof(QSVOtherContext),
182 .type = AVMEDIA_TYPE_VIDEO,
183 .id = AV_CODEC_ID_MPEG2VIDEO,
184 .init = qsv_decode_init,
185 .decode = qsv_decode_frame,
186 .flush = qsv_decode_flush,
187 .close = qsv_decode_close,
188 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING,
189 .priv_class = &mpeg2_qsv_class,
190 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
191 AV_PIX_FMT_QSV,
192 AV_PIX_FMT_NONE },
193};
194#endif
195
196#if CONFIG_VC1_QSV_HWACCEL
197AVHWAccel ff_vc1_qsv_hwaccel = {
198 .name = "vc1_qsv",
199 .type = AVMEDIA_TYPE_VIDEO,
200 .id = AV_CODEC_ID_VC1,
201 .pix_fmt = AV_PIX_FMT_QSV,
202};
203#endif
204
205#if CONFIG_VC1_QSV_DECODER
206static const AVClass vc1_qsv_class = {
207 .class_name = "vc1_qsv",
208 .item_name = av_default_item_name,
209 .option = options,
210 .version = LIBAVUTIL_VERSION_INT,
211};
212
213AVCodec ff_vc1_qsv_decoder = {
214 .name = "vc1_qsv",
215 .long_name = NULL_IF_CONFIG_SMALL("VC-1 video (Intel Quick Sync Video acceleration)"),
216 .priv_data_size = sizeof(QSVOtherContext),
217 .type = AVMEDIA_TYPE_VIDEO,
218 .id = AV_CODEC_ID_VC1,
219 .init = qsv_decode_init,
220 .decode = qsv_decode_frame,
221 .flush = qsv_decode_flush,
222 .close = qsv_decode_close,
223 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING,
224 .priv_class = &vc1_qsv_class,
225 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
226 AV_PIX_FMT_QSV,
227 AV_PIX_FMT_NONE },
228};
229#endif
230
231#if CONFIG_VP8_QSV_HWACCEL
232AVHWAccel ff_vp8_qsv_hwaccel = {
233 .name = "vp8_qsv",
234 .type = AVMEDIA_TYPE_VIDEO,
235 .id = AV_CODEC_ID_VP8,
236 .pix_fmt = AV_PIX_FMT_QSV,
237};
238#endif
239
240#if CONFIG_VP8_QSV_DECODER
241static const AVClass vp8_qsv_class = {
242 .class_name = "vp8_qsv",
243 .item_name = av_default_item_name,
244 .option = options,
245 .version = LIBAVUTIL_VERSION_INT,
246};
247
248AVCodec ff_vp8_qsv_decoder = {
249 .name = "vp8_qsv",
250 .long_name = NULL_IF_CONFIG_SMALL("VP8 video (Intel Quick Sync Video acceleration)"),
251 .priv_data_size = sizeof(QSVOtherContext),
252 .type = AVMEDIA_TYPE_VIDEO,
253 .id = AV_CODEC_ID_VP8,
254 .init = qsv_decode_init,
255 .decode = qsv_decode_frame,
256 .flush = qsv_decode_flush,
257 .close = qsv_decode_close,
258 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING,
259 .priv_class = &vp8_qsv_class,
260 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
261 AV_PIX_FMT_QSV,
262 AV_PIX_FMT_NONE },
263};
264#endif
265
generated by cgit at 2024-05-17 04:18:03 (GMT)