1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
#include "../../include/capture/kms_cuda.h"
#include "../../include/capture/kms.h"
#include "../../include/cuda.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_cuda.h>
#include <libavcodec/avcodec.h>
typedef struct {
gsr_capture_base base;
gsr_capture_kms kms;
gsr_capture_kms_cuda_params params;
gsr_cuda cuda;
CUgraphicsResource cuda_graphics_resources[2];
CUarray mapped_arrays[2];
CUstream cuda_stream;
} gsr_capture_kms_cuda;
static void gsr_capture_kms_cuda_stop(gsr_capture *cap, AVCodecContext *video_codec_context);
static int gsr_capture_kms_cuda_start(gsr_capture *cap, AVCodecContext *video_codec_context, AVFrame *frame) {
gsr_capture_kms_cuda *cap_kms = cap->priv;
const int res = gsr_capture_kms_start(&cap_kms->kms, &cap_kms->base, cap_kms->params.display_to_capture, cap_kms->params.egl, video_codec_context, frame);
if(res != 0) {
gsr_capture_kms_cuda_stop(cap, video_codec_context);
return res;
}
// TODO: overclocking is not supported on wayland...
if(!gsr_cuda_load(&cap_kms->cuda, NULL, false)) {
fprintf(stderr, "gsr error: gsr_capture_kms_cuda_start: failed to load cuda\n");
gsr_capture_kms_cuda_stop(cap, video_codec_context);
return -1;
}
if(!cuda_create_codec_context(cap_kms->cuda.cu_ctx, video_codec_context, &cap_kms->cuda_stream)) {
gsr_capture_kms_cuda_stop(cap, video_codec_context);
return -1;
}
gsr_cuda_context cuda_context = {
.cuda = &cap_kms->cuda,
.cuda_graphics_resources = cap_kms->cuda_graphics_resources,
.mapped_arrays = cap_kms->mapped_arrays
};
if(!gsr_capture_base_setup_cuda_textures(&cap_kms->base, frame, &cuda_context, cap_kms->params.egl, cap_kms->params.color_range, GSR_SOURCE_COLOR_RGB, cap_kms->params.hdr)) {
gsr_capture_kms_cuda_stop(cap, video_codec_context);
return -1;
}
return 0;
}
static bool gsr_capture_kms_cuda_should_stop(gsr_capture *cap, bool *err) {
gsr_capture_kms_cuda *cap_kms = cap->priv;
if(cap_kms->kms.should_stop) {
if(err)
*err = cap_kms->kms.stop_is_error;
return true;
}
if(err)
*err = false;
return false;
}
static void gsr_capture_kms_unload_cuda_graphics(gsr_capture_kms_cuda *cap_kms) {
if(cap_kms->cuda.cu_ctx) {
CUcontext old_ctx;
cap_kms->cuda.cuCtxPushCurrent_v2(cap_kms->cuda.cu_ctx);
for(int i = 0; i < 2; ++i) {
if(cap_kms->cuda_graphics_resources[i]) {
cap_kms->cuda.cuGraphicsUnmapResources(1, &cap_kms->cuda_graphics_resources[i], 0);
cap_kms->cuda.cuGraphicsUnregisterResource(cap_kms->cuda_graphics_resources[i]);
cap_kms->cuda_graphics_resources[i] = 0;
}
}
cap_kms->cuda.cuCtxPopCurrent_v2(&old_ctx);
}
}
static int gsr_capture_kms_cuda_capture(gsr_capture *cap, AVFrame *frame) {
gsr_capture_kms_cuda *cap_kms = cap->priv;
gsr_capture_kms_capture(&cap_kms->kms, &cap_kms->base, frame, cap_kms->params.egl, cap_kms->params.hdr, true, true);
const int div[2] = {1, 2}; // divide UV texture size by 2 because chroma is half size
for(int i = 0; i < 2; ++i) {
CUDA_MEMCPY2D memcpy_struct;
memcpy_struct.srcXInBytes = 0;
memcpy_struct.srcY = 0;
memcpy_struct.srcMemoryType = CU_MEMORYTYPE_ARRAY;
memcpy_struct.dstXInBytes = 0;
memcpy_struct.dstY = 0;
memcpy_struct.dstMemoryType = CU_MEMORYTYPE_DEVICE;
memcpy_struct.srcArray = cap_kms->mapped_arrays[i];
memcpy_struct.srcPitch = frame->width / div[i];
memcpy_struct.dstDevice = (CUdeviceptr)frame->data[i];
memcpy_struct.dstPitch = frame->linesize[i];
memcpy_struct.WidthInBytes = frame->width * (cap_kms->params.hdr ? 2 : 1);
memcpy_struct.Height = frame->height / div[i];
// TODO: Remove this copy if possible
cap_kms->cuda.cuMemcpy2DAsync_v2(&memcpy_struct, cap_kms->cuda_stream);
}
// TODO: needed?
cap_kms->cuda.cuStreamSynchronize(cap_kms->cuda_stream);
return 0;
}
static void gsr_capture_kms_cuda_capture_end(gsr_capture *cap, AVFrame *frame) {
(void)frame;
gsr_capture_kms_cuda *cap_kms = cap->priv;
gsr_capture_kms_cleanup_kms_fds(&cap_kms->kms);
}
static void gsr_capture_kms_cuda_stop(gsr_capture *cap, AVCodecContext *video_codec_context) {
gsr_capture_kms_cuda *cap_kms = cap->priv;
gsr_capture_kms_unload_cuda_graphics(cap_kms);
if(video_codec_context->hw_device_ctx)
av_buffer_unref(&video_codec_context->hw_device_ctx);
if(video_codec_context->hw_frames_ctx)
av_buffer_unref(&video_codec_context->hw_frames_ctx);
gsr_cuda_unload(&cap_kms->cuda);
gsr_capture_kms_stop(&cap_kms->kms);
gsr_capture_base_stop(&cap_kms->base, cap_kms->params.egl);
}
static void gsr_capture_kms_cuda_destroy(gsr_capture *cap, AVCodecContext *video_codec_context) {
(void)video_codec_context;
gsr_capture_kms_cuda *cap_kms = cap->priv;
if(cap->priv) {
gsr_capture_kms_cuda_stop(cap, video_codec_context);
free((void*)cap_kms->params.display_to_capture);
cap_kms->params.display_to_capture = NULL;
free(cap->priv);
cap->priv = NULL;
}
free(cap);
}
gsr_capture* gsr_capture_kms_cuda_create(const gsr_capture_kms_cuda_params *params) {
if(!params) {
fprintf(stderr, "gsr error: gsr_capture_kms_cuda_create params is NULL\n");
return NULL;
}
gsr_capture *cap = calloc(1, sizeof(gsr_capture));
if(!cap)
return NULL;
gsr_capture_kms_cuda *cap_kms = calloc(1, sizeof(gsr_capture_kms_cuda));
if(!cap_kms) {
free(cap);
return NULL;
}
const char *display_to_capture = strdup(params->display_to_capture);
if(!display_to_capture) {
free(cap);
free(cap_kms);
return NULL;
}
cap_kms->params = *params;
cap_kms->params.display_to_capture = display_to_capture;
*cap = (gsr_capture) {
.start = gsr_capture_kms_cuda_start,
.tick = NULL,
.should_stop = gsr_capture_kms_cuda_should_stop,
.capture = gsr_capture_kms_cuda_capture,
.capture_end = gsr_capture_kms_cuda_capture_end,
.destroy = gsr_capture_kms_cuda_destroy,
.priv = cap_kms
};
return cap;
}
|
