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1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#ifndef AVCODEC_VAAPI_ENCODE_H
20#define AVCODEC_VAAPI_ENCODE_H
21
22#include <stdint.h>
23
24#include <va/va.h>
25
26#include "libavutil/hwcontext.h"
27#include "libavutil/hwcontext_vaapi.h"
28
29#include "avcodec.h"
30
31struct VAAPIEncodeType;
32struct VAAPIEncodePicture;
33
34enum {
35 MAX_CONFIG_ATTRIBUTES = 4,
36 MAX_GLOBAL_PARAMS = 4,
37 MAX_PICTURE_REFERENCES = 2,
38 MAX_PICTURE_SLICES = 112,
39 MAX_PARAM_BUFFERS = 128,
40 MAX_REORDER_DELAY = 16,
41 MAX_PARAM_BUFFER_SIZE = 1024,
42};
43
44enum {
45 PICTURE_TYPE_IDR = 0,
46 PICTURE_TYPE_I = 1,
47 PICTURE_TYPE_P = 2,
48 PICTURE_TYPE_B = 3,
49};
50
51typedef struct VAAPIEncodeSlice {
52 int index;
53 void *priv_data;
54 void *codec_slice_params;
55} VAAPIEncodeSlice;
56
57typedef struct VAAPIEncodePicture {
58 struct VAAPIEncodePicture *next;
59
60 int64_t display_order;
61 int64_t encode_order;
62 int64_t pts;
63
64 int type;
65 int input_available;
66 int encode_issued;
67 int encode_complete;
68
69 AVFrame *input_image;
70 VASurfaceID input_surface;
71
72 AVFrame *recon_image;
73 VASurfaceID recon_surface;
74
75 int nb_param_buffers;
76 VABufferID param_buffers[MAX_PARAM_BUFFERS];
77
78 AVBufferRef *output_buffer_ref;
79 VABufferID output_buffer;
80
81 void *priv_data;
82 void *codec_picture_params;
83
84 int nb_refs;
85 struct VAAPIEncodePicture *refs[MAX_PICTURE_REFERENCES];
86
87 int nb_slices;
88 VAAPIEncodeSlice *slices[MAX_PICTURE_SLICES];
89} VAAPIEncodePicture;
90
91typedef struct VAAPIEncodeContext {
92 const AVClass *class;
93
94 // Codec-specific hooks.
95 const struct VAAPIEncodeType *codec;
96
97 // Encoding profile (VAProfileXXX).
98 VAProfile va_profile;
99 // Encoding entrypoint (usually VAEntryointEncSlice).
100 VAEntrypoint va_entrypoint;
101 // Surface colour/sampling format (usually VA_RT_FORMAT_YUV420).
102 unsigned int va_rt_format;
103 // Rate control mode.
104 unsigned int va_rc_mode;
105 // Supported packed headers (initially the desired set, modified
106 // later to what is actually supported).
107 unsigned int va_packed_headers;
108
109 // The required size of surfaces. This is probably the input
110 // size (AVCodecContext.width|height) aligned up to whatever
111 // block size is required by the codec.
112 int surface_width;
113 int surface_height;
114
115 // Everything above this point must be set before calling
116 // ff_vaapi_encode_init().
117
118 // Codec-specific state.
119 void *priv_data;
120
121 // Configuration attributes to use when creating va_config.
122 VAConfigAttrib config_attributes[MAX_CONFIG_ATTRIBUTES];
123 int nb_config_attributes;
124
125 VAConfigID va_config;
126 VAContextID va_context;
127
128 AVBufferRef *device_ref;
129 AVHWDeviceContext *device;
130 AVVAAPIDeviceContext *hwctx;
131
132 // The hardware frame context containing the input frames.
133 AVBufferRef *input_frames_ref;
134 AVHWFramesContext *input_frames;
135
136 // The hardware frame context containing the reconstructed frames.
137 AVBufferRef *recon_frames_ref;
138 AVHWFramesContext *recon_frames;
139
140 // Pool of (reusable) bitstream output buffers.
141 AVBufferPool *output_buffer_pool;
142
143 // Global parameters which will be applied at the start of the
144 // sequence (includes rate control parameters below).
145 VAEncMiscParameterBuffer *global_params[MAX_GLOBAL_PARAMS];
146 size_t global_params_size[MAX_GLOBAL_PARAMS];
147 int nb_global_params;
148
149 // Rate control parameters.
150 struct {
151 VAEncMiscParameterBuffer misc;
152 VAEncMiscParameterRateControl rc;
153 } rc_params;
154 struct {
155 VAEncMiscParameterBuffer misc;
156 VAEncMiscParameterHRD hrd;
157 } hrd_params;
158 struct {
159 VAEncMiscParameterBuffer misc;
160 VAEncMiscParameterFrameRate fr;
161 } fr_params;
162
163 // Per-sequence parameter structure (VAEncSequenceParameterBuffer*).
164 void *codec_sequence_params;
165
166 // Per-sequence parameters found in the per-picture parameter
167 // structure (VAEncPictureParameterBuffer*).
168 void *codec_picture_params;
169
170 // Current encoding window, in display (input) order.
171 VAAPIEncodePicture *pic_start, *pic_end;
172
173 // Next input order index (display order).
174 int64_t input_order;
175 // Number of frames that output is behind input.
176 int64_t output_delay;
177 // Number of frames decode output will need to be delayed.
178 int64_t decode_delay;
179 // Next output order index (encode order).
180 int64_t output_order;
181
182 enum {
183 // All encode operations are done independently (synchronise
184 // immediately after every operation).
185 ISSUE_MODE_SERIALISE_EVERYTHING = 0,
186 // Overlap as many operations as possible.
187 ISSUE_MODE_MAXIMISE_THROUGHPUT,
188 // Overlap operations only when satisfying parallel dependencies.
189 ISSUE_MODE_MINIMISE_LATENCY,
190 } issue_mode;
191
192 // Timestamp handling.
193 int64_t first_pts;
194 int64_t dts_pts_diff;
195 int64_t ts_ring[MAX_REORDER_DELAY * 3];
196
197 // Frame type decision.
198 int p_per_i;
199 int b_per_p;
200 int force_idr;
201 int gop_counter;
202 int p_counter;
203 int end_of_stream;
204
205 // Codec-local options are allocated to follow this structure in
206 // memory (in the AVCodec definition, set priv_data_size to
207 // sizeof(VAAPIEncodeContext) + sizeof(VAAPIEncodeFooOptions)).
208 void *codec_options;
209 char codec_options_data[0];
210} VAAPIEncodeContext;
211
212
213typedef struct VAAPIEncodeType {
214 size_t priv_data_size;
215
216 // Perform any extra codec-specific configuration after the
217 // codec context is initialised (set up the private data and
218 // add any necessary global parameters).
219 int (*configure)(AVCodecContext *avctx);
220
221 // The size of the parameter structures:
222 // sizeof(VAEnc{type}ParameterBuffer{codec}).
223 size_t sequence_params_size;
224 size_t picture_params_size;
225 size_t slice_params_size;
226
227 // Fill the parameter structures.
228 int (*init_sequence_params)(AVCodecContext *avctx);
229 int (*init_picture_params)(AVCodecContext *avctx,
230 VAAPIEncodePicture *pic);
231 int (*init_slice_params)(AVCodecContext *avctx,
232 VAAPIEncodePicture *pic,
233 VAAPIEncodeSlice *slice);
234
235 // The type used by the packed header: this should look like
236 // VAEncPackedHeader{something}.
237 int sequence_header_type;
238 int picture_header_type;
239 int slice_header_type;
240
241 // Write the packed header data to the provided buffer.
242 // The sequence header is also used to fill the codec extradata
243 // when the encoder is starting.
244 int (*write_sequence_header)(AVCodecContext *avctx,
245 char *data, size_t *data_len);
246 int (*write_picture_header)(AVCodecContext *avctx,
247 VAAPIEncodePicture *pic,
248 char *data, size_t *data_len);
249 int (*write_slice_header)(AVCodecContext *avctx,
250 VAAPIEncodePicture *pic,
251 VAAPIEncodeSlice *slice,
252 char *data, size_t *data_len);
253
254 // Fill an extra parameter structure, which will then be
255 // passed to vaRenderPicture(). Will be called repeatedly
256 // with increasing index argument until AVERROR_EOF is
257 // returned.
258 int (*write_extra_buffer)(AVCodecContext *avctx,
259 VAAPIEncodePicture *pic,
260 int index, int *type,
261 char *data, size_t *data_len);
262
263 // Write an extra packed header. Will be called repeatedly
264 // with increasing index argument until AVERROR_EOF is
265 // returned.
266 int (*write_extra_header)(AVCodecContext *avctx,
267 VAAPIEncodePicture *pic,
268 int index, int *type,
269 char *data, size_t *data_len);
270} VAAPIEncodeType;
271
272
273int ff_vaapi_encode2(AVCodecContext *avctx, AVPacket *pkt,
274 const AVFrame *input_image, int *got_packet);
275
276int ff_vaapi_encode_init(AVCodecContext *avctx);
277int ff_vaapi_encode_close(AVCodecContext *avctx);
278
279#endif /* AVCODEC_VAAPI_ENCODE_H */
280
generated by cgit at 2024-05-17 01:47:04 (GMT)