FFmpeg  4.3
vf_untile.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2020 Nicolas George
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 #include "libavutil/imgutils.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "filters.h"
27 
28 typedef struct UntileContext {
29  const AVClass *class;
30  unsigned w, h;
31  unsigned current;
32  unsigned nb_frames;
35  int64_t dpts, pts;
36  int max_step[4];
38 
39 #define OFFSET(x) offsetof(UntileContext, x)
40 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
41 
42 static const AVOption untile_options[] = {
43  { "layout", "set grid size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE,
44  {.str = "6x5"}, 0, 0, FLAGS },
45  { NULL }
46 };
47 
48 AVFILTER_DEFINE_CLASS(untile);
49 
51 {
52  UntileContext *s = ctx->priv;
53 
54  if (s->w > UINT_MAX / s->h) {
55  av_log(ctx, AV_LOG_ERROR, "Tile size %ux%u is insane.\n",
56  s->w, s->h);
57  return AVERROR(EINVAL);
58  }
59  s->nb_frames = s->w * s->h;
60  return 0;
61 }
62 
64 {
66  int ret;
67 
72  if (ret < 0)
73  return ret;
75 }
76 
77 static int config_output(AVFilterLink *outlink)
78 {
79  AVFilterContext *ctx = outlink->src;
80  UntileContext *s = ctx->priv;
81  AVFilterLink *inlink = ctx->inputs[0];
82  AVRational dt;
83 
84  s->desc = av_pix_fmt_desc_get(outlink->format);
85  if (inlink->w % (s->w << s->desc->log2_chroma_w) ||
86  inlink->h % (s->h << s->desc->log2_chroma_h)) {
88  "Input resolution %ux%u not multiple of layout %ux%u.\n",
89  inlink->w, inlink->h, s->w, s->h);
90  return AVERROR(EINVAL);
91  }
92  outlink->w = inlink->w / s->w;
93  outlink->h = inlink->h / s->h;
94  outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
95  outlink->frame_rate = av_mul_q(inlink->frame_rate, av_make_q(s->nb_frames, 1));
96  if (outlink->frame_rate.num)
97  dt = av_inv_q(outlink->frame_rate);
98  else
99  dt = av_mul_q(inlink->time_base, av_make_q(1, s->nb_frames));
100  outlink->time_base = av_gcd_q(inlink->time_base, dt, AV_TIME_BASE / 2, AV_TIME_BASE_Q);
101  s->dpts = av_rescale_q(1, dt, outlink->time_base);
102  av_log(ctx, AV_LOG_VERBOSE, "frame interval: %"PRId64"*%d/%d\n",
103  s->dpts, dt.num, dt.den);
104  av_image_fill_max_pixsteps(s->max_step, NULL, s->desc);
105  return 0;
106 }
107 
109 {
110  UntileContext *s = ctx->priv;
111  AVFilterLink *inlink = ctx->inputs[0];
112  AVFilterLink *outlink = ctx->outputs[0];
113  AVFrame *out;
114  int i, x, y, ret;
115 
117  if (!s->frame) {
118  ret = ff_inlink_consume_frame(inlink, &s->frame);
119  if (ret < 0)
120  return ret;
121  if (ret)
122  s->pts = av_rescale_q(s->frame->pts, inlink->time_base, outlink->time_base);
123  }
124  if (s->frame) {
125  if (s->current == s->nb_frames - 1) {
126  out = s->frame;
127  s->frame = NULL;
128  } else {
129  out = av_frame_clone(s->frame);
130  if (!out)
131  return AVERROR(ENOMEM);
132  }
133  x = outlink->w * (s->current % s->w);
134  y = outlink->h * (s->current / s->w);
135  out->width = outlink->w;
136  out->height = outlink->h;
137  out->data[0] += y * out->linesize[0];
138  out->data[0] += x * s->max_step[0];
139  if (!(s->desc->flags & AV_PIX_FMT_FLAG_PAL || s->desc->flags & FF_PSEUDOPAL)) {
140  for (i = 1; i < 3; i ++) {
141  if (out->data[i]) {
142  out->data[i] += (y >> s->desc->log2_chroma_w) * out->linesize[i];
143  out->data[i] += (x >> s->desc->log2_chroma_h) * s->max_step[i];
144  }
145  }
146  }
147  if (out->data[3]) {
148  out->data[3] += y * out->linesize[3];
149  out->data[3] += x * s->max_step[3];
150  }
151  out->pts = s->pts;
152  s->pts += s->dpts;
153  if (++s->current == s->nb_frames)
154  s->current = 0;
155  return ff_filter_frame(outlink, out);
156  }
159  return FFERROR_NOT_READY;
160 
161 }
162 
164 {
165  UntileContext *s = ctx->priv;
166 
167  av_frame_free(&s->frame);
168 }
169 
170 static const AVFilterPad untile_inputs[] = {
171  {
172  .name = "default",
173  .type = AVMEDIA_TYPE_VIDEO,
174  },
175  { NULL }
176 };
177 
178 static const AVFilterPad untile_outputs[] = {
179  {
180  .name = "default",
181  .type = AVMEDIA_TYPE_VIDEO,
182  .config_props = config_output,
183  },
184  { NULL }
185 };
186 
188  .name = "untile",
189  .description = NULL_IF_CONFIG_SMALL("Untile a frame into a sequence of frames."),
190  .init = init,
191  .uninit = uninit,
192  .query_formats = query_formats,
193  .activate = activate,
194  .priv_size = sizeof(UntileContext),
197  .priv_class = &untile_class,
198 };
formats
formats
Definition: signature.h:48
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:1075
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
FFERROR_NOT_READY
return FFERROR_NOT_READY
Definition: filter_design.txt:204
ff_formats_pixdesc_filter
int ff_formats_pixdesc_filter(AVFilterFormats **rfmts, unsigned want, unsigned rej)
Construct a formats list containing all pixel formats with certain properties.
Definition: formats.c:371
AV_TIME_BASE_Q
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
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
UntileContext::current
unsigned current
Definition: vf_untile.c:31
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
pixdesc.h
AVOption
AVOption.
Definition: opt.h:246
FLAGS
#define FLAGS
Definition: vf_untile.c:40
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
UntileContext::dpts
int64_t dpts
Definition: vf_untile.c:35
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:148
FF_FILTER_FORWARD_STATUS_BACK
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
Definition: filters.h:199
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
formats.h
ff_inlink_consume_frame
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
Definition: avfilter.c:1476
untile_outputs
static const AVFilterPad untile_outputs[]
Definition: vf_untile.c:178
AV_PIX_FMT_FLAG_HWACCEL
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
x
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo x
Definition: fate.txt:150
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_untile.c:50
AVRational::num
int num
Numerator.
Definition: rational.h:59
untile_inputs
static const AVFilterPad untile_inputs[]
Definition: vf_untile.c:170
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
UntileContext::max_step
int max_step[4]
Definition: vf_untile.c:36
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_cold
#define av_cold
Definition: attributes.h:90
ff_set_common_formats
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:600
UntileContext
Definition: vf_untile.c:28
s
#define s(width, name)
Definition: cbs_vp9.c:257
untile_options
static const AVOption untile_options[]
Definition: vf_untile.c:42
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
filters.h
ctx
AVFormatContext * ctx
Definition: movenc.c:48
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:541
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
NULL
#define NULL
Definition: coverity.c:32
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
UntileContext::desc
const AVPixFmtDescriptor * desc
Definition: vf_untile.c:34
AV_OPT_TYPE_IMAGE_SIZE
@ AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
Definition: opt.h:233
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(untile)
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
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_untile.c:163
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:186
FF_PIX_FMT_FLAG_SW_FLAT_SUB
#define FF_PIX_FMT_FLAG_SW_FLAT_SUB
Definition: formats.h:232
activate
static int activate(AVFilterContext *ctx)
Definition: vf_untile.c:108
av_make_q
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
AV_PIX_FMT_FLAG_BITSTREAM
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
Definition: pixdesc.h:136
FF_FILTER_FORWARD_WANTED
FF_FILTER_FORWARD_WANTED(outlink, inlink)
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_untile.c:77
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
av_gcd_q
AVRational av_gcd_q(AVRational a, AVRational b, int max_den, AVRational def)
Return the best rational so that a and b are multiple of it.
Definition: rational.c:186
AV_TIME_BASE
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
UntileContext::h
unsigned h
Definition: vf_untile.c:30
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_untile.c:63
AVFilter
Filter definition.
Definition: avfilter.h:144
ret
ret
Definition: filter_design.txt:187
OFFSET
#define OFFSET(x)
Definition: vf_untile.c:39
w
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
Definition: fate.txt:150
ff_vf_untile
AVFilter ff_vf_untile
Definition: vf_untile.c:187
UntileContext::pts
int64_t pts
Definition: vf_untile.c:35
UntileContext::nb_frames
unsigned nb_frames
Definition: vf_untile.c:32
AVRational::den
int den
Denominator.
Definition: rational.h:60
avfilter.h
UntileContext::w
unsigned w
Definition: vf_untile.c:30
UntileContext::frame
AVFrame * frame
Definition: vf_untile.c:33
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
av_image_fill_max_pixsteps
void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4], const AVPixFmtDescriptor *pixdesc)
Compute the max pixel step for each plane of an image with a format described by pixdesc.
Definition: imgutils.c:35
AVFilterContext
An instance of a filter.
Definition: avfilter.h:338
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
FF_FILTER_FORWARD_STATUS
FF_FILTER_FORWARD_STATUS(inlink, outlink)
imgutils.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
FF_PSEUDOPAL
#define FF_PSEUDOPAL
Definition: internal.h:367
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132