99a71e46f856acfd6ecde0b02f0021f5b9073af1
[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 };
44
45 typedef struct QSVH2645Context {
46 AVClass *class;
47 QSVContext qsv;
48
49 int load_plugin;
50
51 // the filter for converting to Annex B
52 AVBitStreamFilterContext *bsf;
53
54 AVFifoBuffer *packet_fifo;
55
56 AVPacket input_ref;
57 AVPacket pkt_filtered;
58 uint8_t *filtered_data;
59 } QSVH2645Context;
60
61 static void qsv_clear_buffers(QSVH2645Context *s)
62 {
63 AVPacket pkt;
64 while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
65 av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
66 av_packet_unref(&pkt);
67 }
68
69 if (s->filtered_data != s->input_ref.data)
70 av_freep(&s->filtered_data);
71 s->filtered_data = NULL;
72 av_packet_unref(&s->input_ref);
73 }
74
75 static av_cold int qsv_decode_close(AVCodecContext *avctx)
76 {
77 QSVH2645Context *s = avctx->priv_data;
78
79 ff_qsv_decode_close(&s->qsv);
80
81 qsv_clear_buffers(s);
82
83 av_fifo_free(s->packet_fifo);
84
85 av_bitstream_filter_close(s->bsf);
86
87 return 0;
88 }
89
90 static av_cold int qsv_decode_init(AVCodecContext *avctx)
91 {
92 QSVH2645Context *s = avctx->priv_data;
93 int ret;
94
95 if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
96 static const char *uid_hevcenc_sw = "15dd936825ad475ea34e35f3f54217a6";
97
98 if (s->qsv.load_plugins[0]) {
99 av_log(avctx, AV_LOG_WARNING,
100 "load_plugins is not empty, but load_plugin is not set to 'none'."
101 "The load_plugin value will be ignored.\n");
102 } else {
103 av_freep(&s->qsv.load_plugins);
104 s->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
105 if (!s->qsv.load_plugins)
106 return AVERROR(ENOMEM);
107 }
108 }
109
110 s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
111 if (!s->packet_fifo) {
112 ret = AVERROR(ENOMEM);
113 goto fail;
114 }
115
116 if (avctx->codec_id == AV_CODEC_ID_H264)
117 s->bsf = av_bitstream_filter_init("h264_mp4toannexb");
118 else
119 s->bsf = av_bitstream_filter_init("hevc_mp4toannexb");
120 if (!s->bsf) {
121 ret = AVERROR(ENOMEM);
122 goto fail;
123 }
124
125 s->qsv.iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
126
127 return 0;
128 fail:
129 qsv_decode_close(avctx);
130 return ret;
131 }
132
133 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
134 int *got_frame, AVPacket *avpkt)
135 {
136 QSVH2645Context *s = avctx->priv_data;
137 AVFrame *frame = data;
138 int ret;
139
140 /* buffer the input packet */
141 if (avpkt->size) {
142 AVPacket input_ref = { 0 };
143
144 if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
145 ret = av_fifo_realloc2(s->packet_fifo,
146 av_fifo_size(s->packet_fifo) + sizeof(input_ref));
147 if (ret < 0)
148 return ret;
149 }
150
151 ret = av_packet_ref(&input_ref, avpkt);
152 if (ret < 0)
153 return ret;
154 av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
155 }
156
157 /* process buffered data */
158 while (!*got_frame) {
159 /* prepare the input data -- convert to Annex B if needed */
160 if (s->pkt_filtered.size <= 0) {
161 int size;
162
163 /* no more data */
164 if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
165 return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);
166
167 if (s->filtered_data != s->input_ref.data)
168 av_freep(&s->filtered_data);
169 s->filtered_data = NULL;
170 av_packet_unref(&s->input_ref);
171
172 av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
173 ret = av_bitstream_filter_filter(s->bsf, avctx, NULL,
174 &s->filtered_data, &size,
175 s->input_ref.data, s->input_ref.size, 0);
176 if (ret < 0) {
177 s->filtered_data = s->input_ref.data;
178 size = s->input_ref.size;
179 }
180 s->pkt_filtered = s->input_ref;
181 s->pkt_filtered.data = s->filtered_data;
182 s->pkt_filtered.size = size;
183 }
184
185 ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->pkt_filtered);
186 if (ret < 0)
187 return ret;
188
189 s->pkt_filtered.size -= ret;
190 s->pkt_filtered.data += ret;
191 }
192
193 return avpkt->size;
194 }
195
196 static void qsv_decode_flush(AVCodecContext *avctx)
197 {
198 QSVH2645Context *s = avctx->priv_data;
199
200 qsv_clear_buffers(s);
201 ff_qsv_decode_flush(avctx, &s->qsv);
202 }
203
204 #define OFFSET(x) offsetof(QSVH2645Context, x)
205 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
206
207 #if CONFIG_HEVC_QSV_DECODER
208 AVHWAccel ff_hevc_qsv_hwaccel = {
209 .name = "hevc_qsv",
210 .type = AVMEDIA_TYPE_VIDEO,
211 .id = AV_CODEC_ID_HEVC,
212 .pix_fmt = AV_PIX_FMT_QSV,
213 };
214
215 static const AVOption hevc_options[] = {
216 { "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 },
217
218 { "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" },
219 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VD, "load_plugin" },
220 { "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
221
222 { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
223 OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
224 { NULL },
225 };
226
227 static const AVClass hevc_class = {
228 .class_name = "hevc_qsv",
229 .item_name = av_default_item_name,
230 .option = hevc_options,
231 .version = LIBAVUTIL_VERSION_INT,
232 };
233
234 AVCodec ff_hevc_qsv_decoder = {
235 .name = "hevc_qsv",
236 .long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
237 .priv_data_size = sizeof(QSVH2645Context),
238 .type = AVMEDIA_TYPE_VIDEO,
239 .id = AV_CODEC_ID_HEVC,
240 .init = qsv_decode_init,
241 .decode = qsv_decode_frame,
242 .flush = qsv_decode_flush,
243 .close = qsv_decode_close,
244 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
245 .priv_class = &hevc_class,
246 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
247 AV_PIX_FMT_QSV,
248 AV_PIX_FMT_NONE },
249 };
250 #endif
251
252 #if CONFIG_H264_QSV_DECODER
253 AVHWAccel ff_h264_qsv_hwaccel = {
254 .name = "h264_qsv",
255 .type = AVMEDIA_TYPE_VIDEO,
256 .id = AV_CODEC_ID_H264,
257 .pix_fmt = AV_PIX_FMT_QSV,
258 };
259
260 static const AVOption options[] = {
261 { "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 },
262 { NULL },
263 };
264
265 static const AVClass class = {
266 .class_name = "h264_qsv",
267 .item_name = av_default_item_name,
268 .option = options,
269 .version = LIBAVUTIL_VERSION_INT,
270 };
271
272 AVCodec ff_h264_qsv_decoder = {
273 .name = "h264_qsv",
274 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"),
275 .priv_data_size = sizeof(QSVH2645Context),
276 .type = AVMEDIA_TYPE_VIDEO,
277 .id = AV_CODEC_ID_H264,
278 .init = qsv_decode_init,
279 .decode = qsv_decode_frame,
280 .flush = qsv_decode_flush,
281 .close = qsv_decode_close,
282 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
283 .priv_class = &class,
284 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
285 AV_PIX_FMT_QSV,
286 AV_PIX_FMT_NONE },
287 };
288 #endif