FFmpeg
Data Structures | Macros | Functions | Variables
vf_framepack.c File Reference
#include <string.h>
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/rational.h"
#include "libavutil/stereo3d.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  FramepackContext
 

Macros

#define LEFT   0
 
#define RIGHT   1
 
#define OFFSET(x)   offsetof(FramepackContext, x)
 
#define V   AV_OPT_FLAG_VIDEO_PARAM
 

Functions

static int query_formats (AVFilterContext *ctx)
 
static av_cold void framepack_uninit (AVFilterContext *ctx)
 
static int config_output (AVFilterLink *outlink)
 
static void horizontal_frame_pack (AVFilterLink *outlink, AVFrame *out, int interleaved)
 
static void vertical_frame_pack (AVFilterLink *outlink, AVFrame *out, int interleaved)
 
static av_always_inline void spatial_frame_pack (AVFilterLink *outlink, AVFrame *dst)
 
static int try_push_frame (AVFilterContext *ctx)
 
static int filter_frame_left (AVFilterLink *inlink, AVFrame *frame)
 
static int filter_frame_right (AVFilterLink *inlink, AVFrame *frame)
 
static int request_frame (AVFilterLink *outlink)
 
 AVFILTER_DEFINE_CLASS (framepack)
 

Variables

static enum AVPixelFormat formats_supported []
 
static const AVOption framepack_options []
 
static const AVFilterPad framepack_inputs []
 
static const AVFilterPad framepack_outputs []
 
AVFilter ff_vf_framepack
 

Detailed Description

Generate a frame packed video, by combining two views in a single surface.

Definition in file vf_framepack.c.

Macro Definition Documentation

◆ LEFT

#define LEFT   0

Definition at line 40 of file vf_framepack.c.

◆ RIGHT

#define RIGHT   1

Definition at line 41 of file vf_framepack.c.

◆ OFFSET

#define OFFSET (   x)    offsetof(FramepackContext, x)

Definition at line 366 of file vf_framepack.c.

◆ V

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 367 of file vf_framepack.c.

Function Documentation

◆ query_formats()

static int query_formats ( AVFilterContext *  ctx)
static

Definition at line 62 of file vf_framepack.c.

◆ framepack_uninit()

static av_cold void framepack_uninit ( AVFilterContext *  ctx)
static

Definition at line 71 of file vf_framepack.c.

◆ config_output()

static int config_output ( AVFilterLink *  outlink)
static

Definition at line 80 of file vf_framepack.c.

◆ horizontal_frame_pack()

static void horizontal_frame_pack ( AVFilterLink *  outlink,
AVFrame *  out,
int  interleaved 
)
static

Definition at line 147 of file vf_framepack.c.

Referenced by spatial_frame_pack().

◆ vertical_frame_pack()

static void vertical_frame_pack ( AVFilterLink *  outlink,
AVFrame *  out,
int  interleaved 
)
static

Definition at line 212 of file vf_framepack.c.

Referenced by spatial_frame_pack().

◆ spatial_frame_pack()

static av_always_inline void spatial_frame_pack ( AVFilterLink *  outlink,
AVFrame *  dst 
)
static

Definition at line 251 of file vf_framepack.c.

Referenced by try_push_frame().

◆ try_push_frame()

static int try_push_frame ( AVFilterContext *  ctx)
static

Definition at line 305 of file vf_framepack.c.

Referenced by filter_frame_left(), and filter_frame_right().

◆ filter_frame_left()

static int filter_frame_left ( AVFilterLink *  inlink,
AVFrame *  frame 
)
static

Definition at line 274 of file vf_framepack.c.

◆ filter_frame_right()

static int filter_frame_right ( AVFilterLink *  inlink,
AVFrame *  frame 
)
static

Definition at line 281 of file vf_framepack.c.

◆ request_frame()

static int request_frame ( AVFilterLink *  outlink)
static

Definition at line 288 of file vf_framepack.c.

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( framepack  )

Variable Documentation

◆ formats_supported

enum AVPixelFormat formats_supported[]
static
Initial value:
= {
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVJ420P,
AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
AV_PIX_FMT_NONE
}

Definition at line 55 of file vf_framepack.c.

Referenced by query_formats().

◆ framepack_options

const AVOption framepack_options[]
static
Initial value:
= {
{ "format", "Frame pack output format", OFFSET(format), AV_OPT_TYPE_INT,
{ .i64 = AV_STEREO3D_SIDEBYSIDE }, 0, INT_MAX, .flags = V, .unit = "format" },
{ "sbs", "Views are packed next to each other", 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_STEREO3D_SIDEBYSIDE }, INT_MIN, INT_MAX, .flags = V, .unit = "format" },
{ "tab", "Views are packed on top of each other", 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_STEREO3D_TOPBOTTOM }, INT_MIN, INT_MAX, .flags = V, .unit = "format" },
{ "frameseq", "Views are one after the other", 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_STEREO3D_FRAMESEQUENCE }, INT_MIN, INT_MAX, .flags = V, .unit = "format" },
{ "lines", "Views are interleaved by lines", 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_STEREO3D_LINES }, INT_MIN, INT_MAX, .flags = V, .unit = "format" },
{ "columns", "Views are interleaved by columns", 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_STEREO3D_COLUMNS }, INT_MIN, INT_MAX, .flags = V, .unit = "format" },
{ NULL },
}

Definition at line 368 of file vf_framepack.c.

◆ framepack_inputs

const AVFilterPad framepack_inputs[]
static
Initial value:
= {
{
.name = "left",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame_left,
.needs_fifo = 1,
},
{
.name = "right",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame_right,
.needs_fifo = 1,
},
{ NULL }
}

Definition at line 386 of file vf_framepack.c.

◆ framepack_outputs

const AVFilterPad framepack_outputs[]
static
Initial value:
= {
{
.name = "packed",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
}

Definition at line 402 of file vf_framepack.c.

◆ ff_vf_framepack

AVFilter ff_vf_framepack
Initial value:
= {
.name = "framepack",
.description = NULL_IF_CONFIG_SMALL("Generate a frame packed stereoscopic video."),
.priv_size = sizeof(FramepackContext),
.priv_class = &framepack_class,
.query_formats = query_formats,
.inputs = framepack_inputs,
.outputs = framepack_outputs,
.uninit = framepack_uninit,
}

Definition at line 412 of file vf_framepack.c.

framepack_outputs
static const AVFilterPad framepack_outputs[]
Definition: vf_framepack.c:402
filter_frame_right
static int filter_frame_right(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_framepack.c:281
AV_STEREO3D_SIDEBYSIDE
@ AV_STEREO3D_SIDEBYSIDE
Views are next to each other.
Definition: stereo3d.h:67
FramepackContext
Definition: vf_framepack.c:43
OFFSET
#define OFFSET(x)
Definition: vf_framepack.c:366
filter_frame_left
static int filter_frame_left(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_framepack.c:274
AV_STEREO3D_FRAMESEQUENCE
@ AV_STEREO3D_FRAMESEQUENCE
Views are alternated temporally.
Definition: stereo3d.h:92
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
AV_STEREO3D_LINES
@ AV_STEREO3D_LINES
Views are packed per line, as if interlaced.
Definition: stereo3d.h:129
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
format
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 format(the sample packing is implied by the sample format) and sample rate. The lists are not just lists
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
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
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_framepack.c:62
V
#define V
Definition: vf_framepack.c:367
NULL
#define NULL
Definition: coverity.c:32
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
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
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:188
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_framepack.c:80
AV_STEREO3D_TOPBOTTOM
@ AV_STEREO3D_TOPBOTTOM
Views are on top of each other.
Definition: stereo3d.h:79
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
framepack_uninit
static av_cold void framepack_uninit(AVFilterContext *ctx)
Definition: vf_framepack.c:71
AV_STEREO3D_COLUMNS
@ AV_STEREO3D_COLUMNS
Views are packed per column.
Definition: stereo3d.h:141
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
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
request_frame
static int request_frame(AVFilterLink *outlink)
Definition: vf_framepack.c:288
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
framepack_inputs
static const AVFilterPad framepack_inputs[]
Definition: vf_framepack.c:386
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
uninit
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:232
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