a2a6cc3c47464d5b3de94d2c7e393b919b0dee32
[libav.git] / libavcodec / qsvdec_h2645.c
1 /*
2 * Intel MediaSDK QSV based H.264 / HEVC decoder
3 *
4 * copyright (c) 2013 Luca Barbato
5 * copyright (c) 2015 Anton Khirnov
6 *
7 * This file is part of Libav.
8 *
9 * Libav 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.
13 *
14 * Libav 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.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with Libav; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24
25 #include <stdint.h>
26 #include <string.h>
27
28 #include <mfx/mfxvideo.h>
29
30 #include "libavutil/common.h"
31 #include "libavutil/fifo.h"
32 #include "libavutil/opt.h"
33
34 #include "avcodec.h"
35 #include "internal.h"
36 #include "qsv_internal.h"
37 #include "qsvdec.h"
38 #include "qsv.h"
39
40 enum LoadPlugin {
41 LOAD_PLUGIN_NONE,
42 LOAD_PLUGIN_HEVC_SW,
43 LOAD_PLUGIN_HEVC_HW,
44 };
45
46 typedef struct QSVH2645Context {
47 AVClass *class;
48 QSVContext qsv;
49
50 int load_plugin;
51
52 AVFifoBuffer *packet_fifo;
53
54 AVPacket buffer_pkt;
55 } QSVH2645Context;
56
57 static void qsv_clear_buffers(QSVH2645Context *s)
58 {
59 AVPacket pkt;
60 while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
61 av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
62 av_packet_unref(&pkt);
63 }
64
65 av_packet_unref(&s->buffer_pkt);
66 }
67
68 static av_cold int qsv_decode_close(AVCodecContext *avctx)
69 {
70 QSVH2645Context *s = avctx->priv_data;
71
72 ff_qsv_decode_close(&s->qsv);
73
74 qsv_clear_buffers(s);
75
76 av_fifo_free(s->packet_fifo);
77
78 return 0;
79 }
80
81 static av_cold int qsv_decode_init(AVCodecContext *avctx)
82 {
83 QSVH2645Context *s = avctx->priv_data;
84 int ret;
85
86 if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
87 static const char * const uid_hevcdec_sw = "15dd936825ad475ea34e35f3f54217a6";
88 static const char * const uid_hevcdec_hw = "33a61c0b4c27454ca8d85dde757c6f8e";
89
90 if (s->qsv.load_plugins[0]) {
91 av_log(avctx, AV_LOG_WARNING,
92 "load_plugins is not empty, but load_plugin is not set to 'none'."
93 "The load_plugin value will be ignored.\n");
94 } else {
95 av_freep(&s->qsv.load_plugins);
96
97 if (s->load_plugin == LOAD_PLUGIN_HEVC_SW)
98 s->qsv.load_plugins = av_strdup(uid_hevcdec_sw);
99 else
100 s->qsv.load_plugins = av_strdup(uid_hevcdec_hw);
101 if (!s->qsv.load_plugins)
102 return AVERROR(ENOMEM);
103 }
104 }
105
106 s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
107 if (!s->packet_fifo) {
108 ret = AVERROR(ENOMEM);
109 goto fail;
110 }
111
112 return 0;
113 fail:
114 qsv_decode_close(avctx);
115 return ret;
116 }
117
118 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
119 int *got_frame, AVPacket *avpkt)
120 {
121 QSVH2645Context *s = avctx->priv_data;
122 AVFrame *frame = data;
123 int ret;
124
125 /* buffer the input packet */
126 if (avpkt->size) {
127 AVPacket input_ref = { 0 };
128
129 if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
130 ret = av_fifo_realloc2(s->packet_fifo,
131 av_fifo_size(s->packet_fifo) + sizeof(input_ref));
132 if (ret < 0)
133 return ret;
134 }
135
136 ret = av_packet_ref(&input_ref, avpkt);
137 if (ret < 0)
138 return ret;
139 av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
140 }
141
142 /* process buffered data */
143 while (!*got_frame) {
144 /* prepare the input data */
145 if (s->buffer_pkt.size <= 0) {
146 /* no more data */
147 if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
148 return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);
149
150 av_packet_unref(&s->buffer_pkt);
151
152 av_fifo_generic_read(s->packet_fifo, &s->buffer_pkt, sizeof(s->buffer_pkt), NULL);
153 }
154
155 ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->buffer_pkt);
156 if (ret < 0)
157 return ret;
158
159 s->buffer_pkt.size -= ret;
160 s->buffer_pkt.data += ret;
161 }
162
163 return avpkt->size;
164 }
165
166 static void qsv_decode_flush(AVCodecContext *avctx)
167 {
168 QSVH2645Context *s = avctx->priv_data;
169
170 qsv_clear_buffers(s);
171 ff_qsv_decode_flush(avctx, &s->qsv);
172 }
173
174 #define OFFSET(x) offsetof(QSVH2645Context, x)
175 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
176
177 #if CONFIG_HEVC_QSV_HWACCEL
178 AVHWAccel ff_hevc_qsv_hwaccel = {
179 .name = "hevc_qsv",
180 .type = AVMEDIA_TYPE_VIDEO,
181 .id = AV_CODEC_ID_HEVC,
182 .pix_fmt = AV_PIX_FMT_QSV,
183 };
184 #endif
185
186 #if CONFIG_HEVC_QSV_DECODER
187 static const AVOption hevc_options[] = {
188 { "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 },
189
190 { "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_HW, VD, "load_plugin" },
191 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VD, "load_plugin" },
192 { "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
193 { "hevc_hw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VD, "load_plugin" },
194
195 { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
196 OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
197 { NULL },
198 };
199
200 static const AVClass hevc_class = {
201 .class_name = "hevc_qsv",
202 .item_name = av_default_item_name,
203 .option = hevc_options,
204 .version = LIBAVUTIL_VERSION_INT,
205 };
206
207 AVCodec ff_hevc_qsv_decoder = {
208 .name = "hevc_qsv",
209 .long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
210 .priv_data_size = sizeof(QSVH2645Context),
211 .type = AVMEDIA_TYPE_VIDEO,
212 .id = AV_CODEC_ID_HEVC,
213 .init = qsv_decode_init,
214 .decode = qsv_decode_frame,
215 .flush = qsv_decode_flush,
216 .close = qsv_decode_close,
217 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
218 .priv_class = &hevc_class,
219 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
220 AV_PIX_FMT_P010,
221 AV_PIX_FMT_QSV,
222 AV_PIX_FMT_NONE },
223 .bsfs = "hevc_mp4toannexb",
224 };
225 #endif
226
227 #if CONFIG_H264_QSV_HWACCEL
228 AVHWAccel ff_h264_qsv_hwaccel = {
229 .name = "h264_qsv",
230 .type = AVMEDIA_TYPE_VIDEO,
231 .id = AV_CODEC_ID_H264,
232 .pix_fmt = AV_PIX_FMT_QSV,
233 };
234 #endif
235
236 #if CONFIG_H264_QSV_DECODER
237 static const AVOption options[] = {
238 { "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 },
239 { NULL },
240 };
241
242 static const AVClass class = {
243 .class_name = "h264_qsv",
244 .item_name = av_default_item_name,
245 .option = options,
246 .version = LIBAVUTIL_VERSION_INT,
247 };
248
249 AVCodec ff_h264_qsv_decoder = {
250 .name = "h264_qsv",
251 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"),
252 .priv_data_size = sizeof(QSVH2645Context),
253 .type = AVMEDIA_TYPE_VIDEO,
254 .id = AV_CODEC_ID_H264,
255 .init = qsv_decode_init,
256 .decode = qsv_decode_frame,
257 .flush = qsv_decode_flush,
258 .close = qsv_decode_close,
259 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
260 .priv_class = &class,
261 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
262 AV_PIX_FMT_P010,
263 AV_PIX_FMT_QSV,
264 AV_PIX_FMT_NONE },
265 .bsfs = "h264_mp4toannexb",
266 };
267 #endif