FFmpeg
vf_hwupload_cuda.c
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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 #include "libavutil/buffer.h"
20 #include "libavutil/hwcontext.h"
21 #include "libavutil/log.h"
22 #include "libavutil/opt.h"
23 
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28 
29 typedef struct CudaUploadContext {
30  const AVClass *class;
32 
36 
38 {
39  CudaUploadContext *s = ctx->priv;
40  char buf[64] = { 0 };
41 
42  snprintf(buf, sizeof(buf), "%d", s->device_idx);
43 
44  return av_hwdevice_ctx_create(&s->hwdevice, AV_HWDEVICE_TYPE_CUDA, buf, NULL, 0);
45 }
46 
48 {
49  CudaUploadContext *s = ctx->priv;
50 
51  av_buffer_unref(&s->hwframe);
52  av_buffer_unref(&s->hwdevice);
53 }
54 
56 {
57  int ret;
58 
59  static const enum AVPixelFormat input_pix_fmts[] = {
63 #if CONFIG_VULKAN
65 #endif
67  };
68  static const enum AVPixelFormat output_pix_fmts[] = {
70  };
71  AVFilterFormats *in_fmts = ff_make_format_list(input_pix_fmts);
72  AVFilterFormats *out_fmts;
73 
74  ret = ff_formats_ref(in_fmts, &ctx->inputs[0]->outcfg.formats);
75  if (ret < 0)
76  return ret;
77 
78  out_fmts = ff_make_format_list(output_pix_fmts);
79 
80  ret = ff_formats_ref(out_fmts, &ctx->outputs[0]->incfg.formats);
81  if (ret < 0)
82  return ret;
83 
84  return 0;
85 }
86 
88 {
89  AVFilterContext *ctx = outlink->src;
90  AVFilterLink *inlink = ctx->inputs[0];
91  CudaUploadContext *s = ctx->priv;
92 
93  AVHWFramesContext *hwframe_ctx;
94  int ret;
95 
96  av_buffer_unref(&s->hwframe);
97  s->hwframe = av_hwframe_ctx_alloc(s->hwdevice);
98  if (!s->hwframe)
99  return AVERROR(ENOMEM);
100 
101  hwframe_ctx = (AVHWFramesContext*)s->hwframe->data;
102  hwframe_ctx->format = AV_PIX_FMT_CUDA;
103  if (inlink->hw_frames_ctx) {
104  AVHWFramesContext *in_hwframe_ctx = (AVHWFramesContext*)inlink->hw_frames_ctx->data;
105  hwframe_ctx->sw_format = in_hwframe_ctx->sw_format;
106  } else {
107  hwframe_ctx->sw_format = inlink->format;
108  }
109  hwframe_ctx->width = inlink->w;
110  hwframe_ctx->height = inlink->h;
111 
112  ret = av_hwframe_ctx_init(s->hwframe);
113  if (ret < 0)
114  return ret;
115 
116  outlink->hw_frames_ctx = av_buffer_ref(s->hwframe);
117  if (!outlink->hw_frames_ctx)
118  return AVERROR(ENOMEM);
119 
120  return 0;
121 }
122 
124 {
125  AVFilterContext *ctx = link->dst;
126  AVFilterLink *outlink = ctx->outputs[0];
127 
128  AVFrame *out = NULL;
129  int ret;
130 
131  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
132  if (!out) {
133  ret = AVERROR(ENOMEM);
134  goto fail;
135  }
136 
137  out->width = in->width;
138  out->height = in->height;
139 
140  ret = av_hwframe_transfer_data(out, in, 0);
141  if (ret < 0) {
142  av_log(ctx, AV_LOG_ERROR, "Error transferring data to the GPU\n");
143  goto fail;
144  }
145 
146  ret = av_frame_copy_props(out, in);
147  if (ret < 0)
148  goto fail;
149 
150  av_frame_free(&in);
151 
152  return ff_filter_frame(ctx->outputs[0], out);
153 fail:
154  av_frame_free(&in);
155  av_frame_free(&out);
156  return ret;
157 }
158 
159 #define OFFSET(x) offsetof(CudaUploadContext, x)
160 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
161 static const AVOption cudaupload_options[] = {
162  { "device", "Number of the device to use", OFFSET(device_idx), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
163  { NULL },
164 };
165 
166 AVFILTER_DEFINE_CLASS(cudaupload);
167 
168 static const AVFilterPad cudaupload_inputs[] = {
169  {
170  .name = "default",
171  .type = AVMEDIA_TYPE_VIDEO,
172  .filter_frame = cudaupload_filter_frame,
173  },
174  { NULL }
175 };
176 
177 static const AVFilterPad cudaupload_outputs[] = {
178  {
179  .name = "default",
180  .type = AVMEDIA_TYPE_VIDEO,
181  .config_props = cudaupload_config_output,
182  },
183  { NULL }
184 };
185 
187  .name = "hwupload_cuda",
188  .description = NULL_IF_CONFIG_SMALL("Upload a system memory frame to a CUDA device."),
189 
190  .init = cudaupload_init,
191  .uninit = cudaupload_uninit,
192 
193  .query_formats = cudaupload_query_formats,
194 
195  .priv_size = sizeof(CudaUploadContext),
196  .priv_class = &cudaupload_class,
197 
200 
201  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
202 };
cudaupload_outputs
static const AVFilterPad cudaupload_outputs[]
Definition: vf_hwupload_cuda.c:177
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
ff_vf_hwupload_cuda
const AVFilter ff_vf_hwupload_cuda
Definition: vf_hwupload_cuda.c:186
AV_PIX_FMT_CUDA
@ AV_PIX_FMT_CUDA
HW acceleration through CUDA.
Definition: pixfmt.h:225
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
out
FILE * out
Definition: movenc.c:54
FF_FILTER_FLAG_HWFRAME_AWARE
#define FF_FILTER_FLAG_HWFRAME_AWARE
The filter is aware of hardware frames, and any hardware frame context should not be automatically pr...
Definition: internal.h:339
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
AVHWFramesContext::format
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:209
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:111
cudaupload_init
static av_cold int cudaupload_init(AVFilterContext *ctx)
Definition: vf_hwupload_cuda.c:37
av_hwframe_ctx_init
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:333
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
AVFrame::width
int width
Definition: frame.h:361
av_hwframe_ctx_alloc
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:247
AVOption
AVOption.
Definition: opt.h:248
cudaupload_query_formats
static int cudaupload_query_formats(AVFilterContext *ctx)
Definition: vf_hwupload_cuda.c:55
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
AVHWFramesContext::width
int width
The allocated dimensions of the frames in this pool.
Definition: hwcontext.h:229
video.h
AV_PIX_FMT_VULKAN
@ AV_PIX_FMT_VULKAN
Vulkan hardware images.
Definition: pixfmt.h:346
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:65
cudaupload_options
static const AVOption cudaupload_options[]
Definition: vf_hwupload_cuda.c:161
formats.h
AV_HWDEVICE_TYPE_CUDA
@ AV_HWDEVICE_TYPE_CUDA
Definition: hwcontext.h:30
cudaupload_filter_frame
static int cudaupload_filter_frame(AVFilterLink *link, AVFrame *in)
Definition: vf_hwupload_cuda.c:123
fail
#define fail()
Definition: checkasm.h:134
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:181
av_cold
#define av_cold
Definition: attributes.h:90
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
AVHWFramesContext::height
int height
Definition: hwcontext.h:229
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:402
AV_PIX_FMT_0BGR32
#define AV_PIX_FMT_0BGR32
Definition: pixfmt.h:367
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:459
OFFSET
#define OFFSET(x)
Definition: vf_hwupload_cuda.c:159
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(cudaupload)
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
link
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a link
Definition: filter_design.txt:23
if
if(ret)
Definition: filter_design.txt:179
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
NULL
#define NULL
Definition: coverity.c:32
AVHWFramesContext::sw_format
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
Definition: hwcontext.h:222
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:536
av_buffer_unref
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
Definition: buffer.c:125
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
cudaupload_config_output
static int cudaupload_config_output(AVFilterLink *outlink)
Definition: vf_hwupload_cuda.c:87
buffer.h
internal.h
log.h
cudaupload_inputs
static const AVFilterPad cudaupload_inputs[]
Definition: vf_hwupload_cuda.c:168
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
AV_PIX_FMT_P016
#define AV_PIX_FMT_P016
Definition: pixfmt.h:439
AVFilter
Filter definition.
Definition: avfilter.h:145
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_NV12
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:89
AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:366
CudaUploadContext
Definition: vf_hwupload_cuda.c:29
av_hwdevice_ctx_create
int av_hwdevice_ctx_create(AVBufferRef **pdevice_ref, enum AVHWDeviceType type, const char *device, AVDictionary *opts, int flags)
Open a device of the specified type and create an AVHWDeviceContext for it.
Definition: hwcontext.c:610
av_hwframe_transfer_data
int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags)
Copy data to or from a hw surface.
Definition: hwcontext.c:443
AVFrame::height
int height
Definition: frame.h:361
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
av_buffer_ref
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
CudaUploadContext::device_idx
int device_idx
Definition: vf_hwupload_cuda.c:31
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
AV_PIX_FMT_P010
#define AV_PIX_FMT_P010
Definition: pixfmt.h:438
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:84
CudaUploadContext::hwdevice
AVBufferRef * hwdevice
Definition: vf_hwupload_cuda.c:33
hwcontext.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
snprintf
#define snprintf
Definition: snprintf.h:34
CudaUploadContext::hwframe
AVBufferRef * hwframe
Definition: vf_hwupload_cuda.c:34
FLAGS
#define FLAGS
Definition: vf_hwupload_cuda.c:160
cudaupload_uninit
static av_cold void cudaupload_uninit(AVFilterContext *ctx)
Definition: vf_hwupload_cuda.c:47