FFmpeg
vf_derain.c
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1 /*
2  * Copyright (c) 2019 Xuewei Meng
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * Filter implementing image derain filter using deep convolutional networks.
24  * http://openaccess.thecvf.com/content_ECCV_2018/html/Xia_Li_Recurrent_Squeeze-and-Excitation_Context_ECCV_2018_paper.html
25  */
26 
27 #include "libavformat/avio.h"
28 #include "libavutil/opt.h"
29 #include "avfilter.h"
30 #include "dnn_filter_common.h"
31 #include "formats.h"
32 #include "internal.h"
33 
34 typedef struct DRContext {
35  const AVClass *class;
38 } DRContext;
39 
40 #define OFFSET(x) offsetof(DRContext, x)
41 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
42 static const AVOption derain_options[] = {
43  { "filter_type", "filter type(derain/dehaze)", OFFSET(filter_type), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS, "type" },
44  { "derain", "derain filter flag", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FLAGS, "type" },
45  { "dehaze", "dehaze filter flag", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "type" },
46  { "dnn_backend", "DNN backend", OFFSET(dnnctx.backend_type), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS, "backend" },
47  { "native", "native backend flag", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FLAGS, "backend" },
48 #if (CONFIG_LIBTENSORFLOW == 1)
49  { "tensorflow", "tensorflow backend flag", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "backend" },
50 #endif
51  { "model", "path to model file", OFFSET(dnnctx.model_filename), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS },
52  { "input", "input name of the model", OFFSET(dnnctx.model_inputname), AV_OPT_TYPE_STRING, { .str = "x" }, 0, 0, FLAGS },
53  { "output", "output name of the model", OFFSET(dnnctx.model_outputnames_string), AV_OPT_TYPE_STRING, { .str = "y" }, 0, 0, FLAGS },
54  { NULL }
55 };
56 
57 AVFILTER_DEFINE_CLASS(derain);
58 
60 {
61  DNNAsyncStatusType async_state = 0;
62  AVFilterContext *ctx = inlink->dst;
63  AVFilterLink *outlink = ctx->outputs[0];
64  DRContext *dr_context = ctx->priv;
65  DNNReturnType dnn_result;
66  AVFrame *out;
67 
68  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
69  if (!out) {
70  av_log(ctx, AV_LOG_ERROR, "could not allocate memory for output frame\n");
71  av_frame_free(&in);
72  return AVERROR(ENOMEM);
73  }
75 
76  dnn_result = ff_dnn_execute_model(&dr_context->dnnctx, in, out);
77  if (dnn_result != DNN_SUCCESS){
78  av_log(ctx, AV_LOG_ERROR, "failed to execute model\n");
79  av_frame_free(&in);
80  return AVERROR(EIO);
81  }
82  do {
83  async_state = ff_dnn_get_result(&dr_context->dnnctx, &in, &out);
84  } while (async_state == DAST_NOT_READY);
85 
86  if (async_state != DAST_SUCCESS)
87  return AVERROR(EINVAL);
88 
89  av_frame_free(&in);
90 
91  return ff_filter_frame(outlink, out);
92 }
93 
95 {
96  DRContext *dr_context = ctx->priv;
97  return ff_dnn_init(&dr_context->dnnctx, DFT_PROCESS_FRAME, ctx);
98 }
99 
101 {
102  DRContext *dr_context = ctx->priv;
103  ff_dnn_uninit(&dr_context->dnnctx);
104 }
105 
106 static const AVFilterPad derain_inputs[] = {
107  {
108  .name = "default",
109  .type = AVMEDIA_TYPE_VIDEO,
110  .filter_frame = filter_frame,
111  },
112 };
113 
114 static const AVFilterPad derain_outputs[] = {
115  {
116  .name = "default",
117  .type = AVMEDIA_TYPE_VIDEO,
118  },
119 };
120 
122  .name = "derain",
123  .description = NULL_IF_CONFIG_SMALL("Apply derain filter to the input."),
124  .priv_size = sizeof(DRContext),
125  .init = init,
126  .uninit = uninit,
130  .priv_class = &derain_class,
132 };
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:98
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
out
FILE * out
Definition: movenc.c:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
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:112
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
DRContext::filter_type
int filter_type
Definition: vf_derain.c:37
AVOption
AVOption.
Definition: opt.h:247
DRContext
Definition: vf_derain.c:34
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_derain.c:94
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
dnn_filter_common.h
formats.h
DnnContext
Definition: dnn_filter_common.h:29
DNN_SUCCESS
@ DNN_SUCCESS
Definition: dnn_interface.h:33
derain_inputs
static const AVFilterPad derain_inputs[]
Definition: vf_derain.c:106
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
DNNReturnType
DNNReturnType
Definition: dnn_interface.h:33
ff_dnn_get_result
DNNAsyncStatusType ff_dnn_get_result(DnnContext *ctx, AVFrame **in_frame, AVFrame **out_frame)
Definition: dnn_filter_common.c:147
ctx
AVFormatContext * ctx
Definition: movenc.c:48
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
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:537
derain_outputs
static const AVFilterPad derain_outputs[]
Definition: vf_derain.c:114
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_derain.c:59
derain_options
static const AVOption derain_options[]
Definition: vf_derain.c:42
FLAGS
#define FLAGS
Definition: vf_derain.c:41
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
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
DAST_SUCCESS
@ DAST_SUCCESS
Definition: dnn_interface.h:49
ff_vf_derain
const AVFilter ff_vf_derain
Definition: vf_derain.c:121
avio.h
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:130
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:181
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
AVFilter
Filter definition.
Definition: avfilter.h:149
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(derain)
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
AVFilterContext
An instance of a filter.
Definition: avfilter.h:386
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
DRContext::dnnctx
DnnContext dnnctx
Definition: vf_derain.c:36
ff_dnn_execute_model
DNNReturnType ff_dnn_execute_model(DnnContext *ctx, AVFrame *in_frame, AVFrame *out_frame)
Definition: dnn_filter_common.c:120
OFFSET
#define OFFSET(x)
Definition: vf_derain.c:40
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
ff_dnn_init
int ff_dnn_init(DnnContext *ctx, DNNFunctionType func_type, AVFilterContext *filter_ctx)
Definition: dnn_filter_common.c:54
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
ff_dnn_uninit
void ff_dnn_uninit(DnnContext *ctx)
Definition: dnn_filter_common.c:157
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_derain.c:100
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
DAST_NOT_READY
@ DAST_NOT_READY
Definition: dnn_interface.h:48
DNNAsyncStatusType
DNNAsyncStatusType
Definition: dnn_interface.h:45
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
DFT_PROCESS_FRAME
@ DFT_PROCESS_FRAME
Definition: dnn_interface.h:54