vf_scale_cuda.c File Reference

#include <float.h>
#include <stdio.h>
#include "libavutil/common.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_cuda_internal.h"
#include "libavutil/cuda_check.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "scale_eval.h"
#include "video.h"
#include "cuda/load_helper.h"
#include "vf_scale_cuda.h"

Go to the source code of this file.

Data Structures
struct	CUDAScaleContext

Macros
#define	DIV_UP(a, b)   ( ((a) + (b) - 1) / (b) )
#define	BLOCKX   32
#define	BLOCKY   16
#define	CHECK_CU(x)   FF_CUDA_CHECK_DL(ctx, s->hwctx->internal->cuda_dl, x)
#define	OFFSET(x)   offsetof(CUDAScaleContext, x)
#define	FLAGS   (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)

Enumerations
enum	{   INTERP_ALGO_DEFAULT, INTERP_ALGO_NEAREST, INTERP_ALGO_BILINEAR, INTERP_ALGO_BICUBIC,   INTERP_ALGO_LANCZOS, INTERP_ALGO_COUNT }

Functions
static av_cold int	cudascale_init (AVFilterContext *ctx)
static av_cold void	cudascale_uninit (AVFilterContext *ctx)
static av_cold int	init_hwframe_ctx (CUDAScaleContext *s, AVBufferRef *device_ctx, int width, int height)
static int	format_is_supported (enum AVPixelFormat fmt)
static av_cold void	set_format_info (AVFilterContext *ctx, enum AVPixelFormat in_format, enum AVPixelFormat out_format)
static av_cold int	init_processing_chain (AVFilterContext *ctx, int in_width, int in_height, int out_width, int out_height)
static av_cold int	cudascale_load_functions (AVFilterContext *ctx)
static av_cold int	cudascale_config_props (AVFilterLink *outlink)
static int	call_resize_kernel (AVFilterContext *ctx, CUfunction func, CUtexObject src_tex[4], int src_width, int src_height, AVFrame *out_frame, int dst_width, int dst_height, int dst_pitch)
static int	scalecuda_resize (AVFilterContext *ctx, AVFrame *out, AVFrame *in)
static int	cudascale_scale (AVFilterContext *ctx, AVFrame *out, AVFrame *in)
static int	cudascale_filter_frame (AVFilterLink *link, AVFrame *in)
static AVFrame *	cudascale_get_video_buffer (AVFilterLink *inlink, int w, int h)

Variables
static enum AVPixelFormat	supported_formats []
static const AVOption	options []
static const AVClass	cudascale_class
static const AVFilterPad	cudascale_inputs []
static const AVFilterPad	cudascale_outputs []
const AVFilter	ff_vf_scale_cuda

Macro Definition Documentation

DIV_UP

#define DIV_UP	(		a,
			b
	)		( ((a) + (b) - 1) / (b) )

Definition at line 55 of file vf_scale_cuda.c.

BLOCKX

#define BLOCKX   32

Definition at line 56 of file vf_scale_cuda.c.

BLOCKY

#define BLOCKY   16

Definition at line 57 of file vf_scale_cuda.c.

CHECK_CU

#define CHECK_CU

(

x

)

FF_CUDA_CHECK_DL(ctx, s->hwctx->internal->cuda_dl, x)

Definition at line 59 of file vf_scale_cuda.c.

OFFSET

#define OFFSET

(

x

)

offsetof(CUDAScaleContext, x)

Definition at line 583 of file vf_scale_cuda.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)

Definition at line 584 of file vf_scale_cuda.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
INTERP_ALGO_DEFAULT
INTERP_ALGO_NEAREST
INTERP_ALGO_BILINEAR
INTERP_ALGO_BICUBIC
INTERP_ALGO_LANCZOS
INTERP_ALGO_COUNT

Definition at line 61 of file vf_scale_cuda.c.

Function Documentation

cudascale_init()

static av_cold int cudascale_init ( AVFilterContext *  ctx )

static

Definition at line 113 of file vf_scale_cuda.c.

cudascale_uninit()

static av_cold void cudascale_uninit ( AVFilterContext *  ctx )

static

Definition at line 128 of file vf_scale_cuda.c.

init_hwframe_ctx()

static av_cold int init_hwframe_ctx ( CUDAScaleContext *  s, AVBufferRef *  device_ctx, int  width, int  height  )

static

Definition at line 147 of file vf_scale_cuda.c.

Referenced by init_processing_chain().

format_is_supported()

static int format_is_supported ( enum AVPixelFormat  fmt )

static

Definition at line 184 of file vf_scale_cuda.c.

Referenced by init_processing_chain().

set_format_info()

static av_cold void set_format_info ( AVFilterContext *  ctx, enum AVPixelFormat  in_format, enum AVPixelFormat  out_format  )

static

Definition at line 194 of file vf_scale_cuda.c.

Referenced by init_processing_chain().

init_processing_chain()

static av_cold int init_processing_chain ( AVFilterContext *  ctx, int  in_width, int  in_height, int  out_width, int  out_height  )

static

Definition at line 220 of file vf_scale_cuda.c.

Referenced by cudascale_config_props().

cudascale_load_functions()

static av_cold int cudascale_load_functions ( AVFilterContext *  ctx )

static

Definition at line 276 of file vf_scale_cuda.c.

Referenced by cudascale_config_props().

cudascale_config_props()

static av_cold int cudascale_config_props ( AVFilterLink *  outlink )

static

Definition at line 347 of file vf_scale_cuda.c.

call_resize_kernel()

static int call_resize_kernel ( AVFilterContext *  ctx, CUfunction  func, CUtexObject  src_tex[4], int  src_width, int  src_height, AVFrame *  out_frame, int  dst_width, int  dst_height, int  dst_pitch  )

static

Definition at line 403 of file vf_scale_cuda.c.

Referenced by scalecuda_resize().

scalecuda_resize()

static int scalecuda_resize ( AVFilterContext *  ctx, AVFrame *  out, AVFrame *  in  )

static

Definition at line 427 of file vf_scale_cuda.c.

Referenced by cudascale_scale().

cudascale_scale()

static int cudascale_scale ( AVFilterContext *  ctx, AVFrame *  out, AVFrame *  in  )

static

Definition at line 502 of file vf_scale_cuda.c.

Referenced by cudascale_filter_frame().

cudascale_filter_frame()

static int cudascale_filter_frame ( AVFilterLink *  link, AVFrame *  in  )

static

Definition at line 531 of file vf_scale_cuda.c.

cudascale_get_video_buffer()

static AVFrame* cudascale_get_video_buffer ( AVFilterLink *  inlink, int  w, int  h  )

static

Definition at line 574 of file vf_scale_cuda.c.

Variable Documentation

supported_formats

enum AVPixelFormat supported_formats[]

static

Initial value:

= {
    AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_NV12,
    AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_P010,
    AV_PIX_FMT_P016,
    AV_PIX_FMT_YUV444P16,
    AV_PIX_FMT_0RGB32,
    AV_PIX_FMT_0BGR32,
    AV_PIX_FMT_RGB32,
    AV_PIX_FMT_BGR32,
}

Definition at line 42 of file vf_scale_cuda.c.

Referenced by format_is_supported().

options

const AVOption options[]

static

Initial value:

= {
    { "w", "Output video width",  OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str = "iw" }, .flags = FLAGS },
    { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str = "ih" }, .flags = FLAGS },
    { "interp_algo", "Interpolation algorithm used for resizing", OFFSET(interp_algo), AV_OPT_TYPE_INT, { .i64 = INTERP_ALGO_DEFAULT }, 0, INTERP_ALGO_COUNT - 1, FLAGS, "interp_algo" },
        { "nearest",  "nearest neighbour", 0, AV_OPT_TYPE_CONST, { .i64 = INTERP_ALGO_NEAREST }, 0, 0, FLAGS, "interp_algo" },
        { "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = INTERP_ALGO_BILINEAR }, 0, 0, FLAGS, "interp_algo" },
        { "bicubic",  "bicubic",  0, AV_OPT_TYPE_CONST, { .i64 = INTERP_ALGO_BICUBIC  }, 0, 0, FLAGS, "interp_algo" },
        { "lanczos",  "lanczos",  0, AV_OPT_TYPE_CONST, { .i64 = INTERP_ALGO_LANCZOS  }, 0, 0, FLAGS, "interp_algo" },
    { "format", "Output video pixel format", OFFSET(format), AV_OPT_TYPE_PIXEL_FMT, { .i64 = AV_PIX_FMT_NONE }, INT_MIN, INT_MAX, .flags=FLAGS },
    { "passthrough", "Do not process frames at all if parameters match", OFFSET(passthrough), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
    { "param", "Algorithm-Specific parameter", OFFSET(param), AV_OPT_TYPE_FLOAT, { .dbl = SCALE_CUDA_PARAM_DEFAULT }, -FLT_MAX, FLT_MAX, FLAGS },
    { "force_original_aspect_ratio", "decrease or increase w/h if necessary to keep the original AR", OFFSET(force_original_aspect_ratio), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, FLAGS, "force_oar" },
        { "disable",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 0, FLAGS, "force_oar" },
        { "decrease", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 0, FLAGS, "force_oar" },
        { "increase", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 0, FLAGS, "force_oar" },
    { "force_divisible_by", "enforce that the output resolution is divisible by a defined integer when force_original_aspect_ratio is used", OFFSET(force_divisible_by), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 256, FLAGS },
    { NULL },
}

Definition at line 585 of file vf_scale_cuda.c.

cudascale_class

const AVClass cudascale_class

static

Initial value:

= {
    .class_name = "cudascale",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 604 of file vf_scale_cuda.c.

cudascale_inputs

const AVFilterPad cudascale_inputs[]

static

Initial value:

= {
    {
        .name        = "default",
        .type        = AVMEDIA_TYPE_VIDEO,
        .filter_frame = cudascale_filter_frame,
        .get_buffer.video = cudascale_get_video_buffer,
    },
}

Definition at line 611 of file vf_scale_cuda.c.

cudascale_outputs

const AVFilterPad cudascale_outputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = cudascale_config_props,
    },
}

Definition at line 620 of file vf_scale_cuda.c.

ff_vf_scale_cuda

const AVFilter ff_vf_scale_cuda

Initial value:

= {
    .name      = "scale_cuda",
    .description = NULL_IF_CONFIG_SMALL("GPU accelerated video resizer"),
 
    .init          = cudascale_init,
    .uninit        = cudascale_uninit,
 
    .priv_size = sizeof(CUDAScaleContext),
    .priv_class = &cudascale_class,
 
    FILTER_INPUTS(cudascale_inputs),
    FILTER_OUTPUTS(cudascale_outputs),
 
    FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA),
 
    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
}

Definition at line 628 of file vf_scale_cuda.c.