h264_metadata: Add option to delete filler data
[libav.git] / libavfilter / vf_hwupload_cuda.c
CommitLineData
21f7cd4a
AK
1/*
2 * This file is part of Libav.
3 *
4 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include "libavutil/buffer.h"
20#include "libavutil/hwcontext.h"
21#include "libavutil/hwcontext_cuda.h"
22#include "libavutil/log.h"
23#include "libavutil/opt.h"
24
25#include "avfilter.h"
26#include "formats.h"
27#include "internal.h"
28#include "video.h"
29
30typedef struct CudaUploadContext {
31 const AVClass *class;
32 int device_idx;
33
34 AVBufferRef *hwdevice;
35 AVBufferRef *hwframe;
36} CudaUploadContext;
37
38static void cudaupload_ctx_free(AVHWDeviceContext *ctx)
39{
40 AVCUDADeviceContext *hwctx = ctx->hwctx;
41 cuCtxDestroy(hwctx->cuda_ctx);
42}
43
44static av_cold int cudaupload_init(AVFilterContext *ctx)
45{
46 CudaUploadContext *s = ctx->priv;
47
48 AVHWDeviceContext *device_ctx;
49 AVCUDADeviceContext *device_hwctx;
50 CUdevice device;
51 CUcontext cuda_ctx = NULL, dummy;
52 CUresult err;
53 int ret;
54
55 err = cuInit(0);
56 if (err != CUDA_SUCCESS) {
57 av_log(ctx, AV_LOG_ERROR, "Could not initialize the CUDA driver API\n");
58 return AVERROR_UNKNOWN;
59 }
60
61 err = cuDeviceGet(&device, s->device_idx);
62 if (err != CUDA_SUCCESS) {
63 av_log(ctx, AV_LOG_ERROR, "Could not get the device number %d\n", s->device_idx);
64 return AVERROR_UNKNOWN;
65 }
66
67 err = cuCtxCreate(&cuda_ctx, 0, device);
68 if (err != CUDA_SUCCESS) {
69 av_log(ctx, AV_LOG_ERROR, "Error creating a CUDA context\n");
70 return AVERROR_UNKNOWN;
71 }
72
73 cuCtxPopCurrent(&dummy);
74
75 s->hwdevice = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
76 if (!s->hwdevice) {
77 cuCtxDestroy(cuda_ctx);
78 return AVERROR(ENOMEM);
79 }
80
81 device_ctx = (AVHWDeviceContext*)s->hwdevice->data;
82 device_ctx->free = cudaupload_ctx_free;
83
84 device_hwctx = device_ctx->hwctx;
85 device_hwctx->cuda_ctx = cuda_ctx;
86
87 ret = av_hwdevice_ctx_init(s->hwdevice);
88 if (ret < 0)
89 return ret;
90
91 return 0;
92}
93
94static av_cold void cudaupload_uninit(AVFilterContext *ctx)
95{
96 CudaUploadContext *s = ctx->priv;
97
98 av_buffer_unref(&s->hwframe);
99 av_buffer_unref(&s->hwdevice);
100}
101
102static int cudaupload_query_formats(AVFilterContext *ctx)
103{
104 static const enum AVPixelFormat input_pix_fmts[] = {
105 AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P,
106 AV_PIX_FMT_NONE,
107 };
108 static const enum AVPixelFormat output_pix_fmts[] = {
109 AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
110 };
111 AVFilterFormats *in_fmts = ff_make_format_list(input_pix_fmts);
112 AVFilterFormats *out_fmts = ff_make_format_list(output_pix_fmts);
113
114 ff_formats_ref(in_fmts, &ctx->inputs[0]->out_formats);
115 ff_formats_ref(out_fmts, &ctx->outputs[0]->in_formats);
116
117 return 0;
118}
119
120static int cudaupload_config_output(AVFilterLink *outlink)
121{
122 AVFilterContext *ctx = outlink->src;
123 AVFilterLink *inlink = ctx->inputs[0];
124 CudaUploadContext *s = ctx->priv;
125
126 AVHWFramesContext *hwframe_ctx;
127 int ret;
128
129 av_buffer_unref(&s->hwframe);
130 s->hwframe = av_hwframe_ctx_alloc(s->hwdevice);
131 if (!s->hwframe)
132 return AVERROR(ENOMEM);
133
134 hwframe_ctx = (AVHWFramesContext*)s->hwframe->data;
135 hwframe_ctx->format = AV_PIX_FMT_CUDA;
136 hwframe_ctx->sw_format = inlink->format;
137 hwframe_ctx->width = FFALIGN(inlink->w, 16);
138 hwframe_ctx->height = FFALIGN(inlink->h, 16);
139
140 ret = av_hwframe_ctx_init(s->hwframe);
141 if (ret < 0)
142 return ret;
143
144 outlink->hw_frames_ctx = av_buffer_ref(s->hwframe);
145 if (!outlink->hw_frames_ctx)
146 return AVERROR(ENOMEM);
147
148 return 0;
149}
150
151static int cudaupload_filter_frame(AVFilterLink *link, AVFrame *in)
152{
153 AVFilterContext *ctx = link->dst;
67c65e46 154 AVFilterLink *outlink = ctx->outputs[0];
21f7cd4a
AK
155
156 AVFrame *out = NULL;
157 int ret;
158
7e2561fa 159 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
21f7cd4a
AK
160 if (!out) {
161 ret = AVERROR(ENOMEM);
162 goto fail;
163 }
164
21f7cd4a
AK
165 out->width = in->width;
166 out->height = in->height;
167
168 ret = av_hwframe_transfer_data(out, in, 0);
169 if (ret < 0) {
170 av_log(ctx, AV_LOG_ERROR, "Error transferring data to the GPU\n");
171 goto fail;
172 }
173
174 ret = av_frame_copy_props(out, in);
175 if (ret < 0)
176 goto fail;
177
178 av_frame_free(&in);
179
180 return ff_filter_frame(ctx->outputs[0], out);
181fail:
182 av_frame_free(&in);
183 av_frame_free(&out);
184 return ret;
185}
186
187#define OFFSET(x) offsetof(CudaUploadContext, x)
188#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
189static const AVOption options[] = {
dbfe60ca 190 { "device", "Number of the device to use", OFFSET(device_idx), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
21f7cd4a
AK
191 { NULL },
192};
193
194static const AVClass cudaupload_class = {
195 .class_name = "cudaupload",
196 .item_name = av_default_item_name,
197 .option = options,
198 .version = LIBAVUTIL_VERSION_INT,
199};
200
201static const AVFilterPad cudaupload_inputs[] = {
202 {
203 .name = "default",
204 .type = AVMEDIA_TYPE_VIDEO,
205 .filter_frame = cudaupload_filter_frame,
206 },
207 { NULL }
208};
209
210static const AVFilterPad cudaupload_outputs[] = {
211 {
212 .name = "default",
213 .type = AVMEDIA_TYPE_VIDEO,
214 .config_props = cudaupload_config_output,
215 },
216 { NULL }
217};
218
219AVFilter ff_vf_hwupload_cuda = {
220 .name = "hwupload_cuda",
221 .description = NULL_IF_CONFIG_SMALL("Upload a system memory frame to a CUDA device"),
222
223 .init = cudaupload_init,
224 .uninit = cudaupload_uninit,
225
226 .query_formats = cudaupload_query_formats,
227
228 .priv_size = sizeof(CudaUploadContext),
229 .priv_class = &cudaupload_class,
230
231 .inputs = cudaupload_inputs,
232 .outputs = cudaupload_outputs,
e3fb74f7
MT
233
234 .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
21f7cd4a 235};