#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <stdarg.h>
#include <signal.h>
#include "libavutil/cpu.h"
#include "libavutil/avstring.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/lfg.h"
#include "libavutil/sfc64.h"
#include "libavutil/frame.h"
#include "libavutil/opt.h"
#include "libavutil/time.h"
#include "libavutil/pixfmt.h"
#include "libavutil/avassert.h"
#include "libavutil/macros.h"
#include "libavutil/hwcontext.h"
#include "libswscale/swscale.h"
#include "libswscale/format.h"

Data Structures
struct	options

struct	mode

struct	test_results

Macros
#define	IMPL_NEW 0

#define	IMPL_LEGACY 1

Functions
static const char *	speedup_color (double ratio)

static void	exit_handler (int sig)

static float	estimate_quantization_noise (enum AVPixelFormat fmt)

static int	fmt_comps (enum AVPixelFormat fmt)

static void	get_ssim (float ssim[4], const AVFrame out, const AVFrame ref, int comps)

static float	get_loss (const float ssim[4])

static void	unref_buffers (AVFrame *frame)

static int	checked_sws_scale_frame (SwsContext c, AVFrame dst, const AVFrame *src)

static int	scale_new (AVFrame dst, const AVFrame src, const struct mode mode, const struct options opts, int64_t *out_time)

static int	scale_legacy (AVFrame dst, const AVFrame src, const struct mode mode, const struct options opts, int64_t *out_time)

static int	scale_hw (AVFrame dst, const AVFrame src, const struct mode mode, const struct options opts, int64_t *out_time)

static void	print_test_params (char buf, size_t buf_size, const AVFrame src, const AVFrame dst, const struct mode mode, const struct options *opts)

static void	print_results (const AVFrame ref, const AVFrame src, const AVFrame dst, int dst_w, int dst_h, const struct mode mode, const struct options opts, const struct test_results r, const struct test_results *ref_r, float expected_loss)

static int	init_frame (AVFrame *pframe, const AVFrame ref, int width, int height, enum AVPixelFormat format)

static int	run_test (enum AVPixelFormat src_fmt, enum AVPixelFormat dst_fmt, int dst_w, int dst_h, const struct mode mode, const struct options opts, const AVFrame ref, AVFrame psrc, const struct test_results ref_r)

static int	fmt_is_subsampled (enum AVPixelFormat fmt)

static int	fmt_is_supported_by_hw (enum AVPixelFormat fmt)

static int	fmt_disabled (const struct options *opts, enum AVPixelFormat fmt)

static int	test_formats (const struct options *opts, enum AVPixelFormat src, enum AVPixelFormat dst)

static int	run_self_tests (const AVFrame ref, const struct options opts)

static int	run_file_tests (const AVFrame ref, FILE fp, const struct options *opts)

static int	init_ref (AVFrame ref, const struct options opts)

static int	parse_size (struct options opts, const char str, char **pbuf)

static int	parse_implementation (const char *str)

static int	parse_options (int argc, char *argv, struct options opts, FILE **fp)

int	main (int argc, char **argv)

Variables
const SwsFlags	flags []

static FFSFC64	prng_state

static SwsContext *	sws_ref_src

static SwsContext *	sws_src_dst

static SwsContext *	sws_dst_out

static AVBufferRef *	hw_device_ctx = NULL

static AVHWFramesConstraints *	hw_device_constr = NULL

static double	speedup_logavg

static double	speedup_min = 1e10

static double	speedup_max = 0

static int	speedup_count

Macro Definition Documentation

◆ IMPL_NEW

#define IMPL_NEW 0

Definition at line 47 of file swscale.c.

Referenced by parse_implementation().

◆ IMPL_LEGACY

#define IMPL_LEGACY 1

Definition at line 48 of file swscale.c.

Referenced by parse_implementation(), run_test(), and test_formats().

Function Documentation

◆ speedup_color()

static const char * speedup_color ( double ratio )

static

Definition at line 111 of file swscale.c.

Referenced by exit_handler(), and print_results().

◆ exit_handler()

static void exit_handler ( int sig )

static

Definition at line 122 of file swscale.c.

Referenced by main().

◆ estimate_quantization_noise()

static float estimate_quantization_noise ( enum AVPixelFormat fmt )

static

Definition at line 135 of file swscale.c.

Referenced by run_test().

◆ fmt_comps()

static int fmt_comps ( enum AVPixelFormat fmt )

static

Definition at line 157 of file swscale.c.

Referenced by run_test().

◆ get_ssim()

static void get_ssim	(	float	ssim[4],
		const AVFrame *	out,
		const AVFrame *	ref,
		int	comps )

static

Definition at line 166 of file swscale.c.

Referenced by run_test().

◆ get_loss()

static float get_loss ( const float ssim[4] )

static

Definition at line 214 of file swscale.c.

Referenced by run_test().

◆ unref_buffers()

static void unref_buffers ( AVFrame * frame )

static

Definition at line 226 of file swscale.c.

Referenced by scale_new().

◆ checked_sws_scale_frame()

static int checked_sws_scale_frame	(	SwsContext *	c,
		AVFrame *	dst,
		const AVFrame *	src )

static

Definition at line 238 of file swscale.c.

Referenced by init_ref(), run_test(), scale_hw(), scale_legacy(), and scale_new().

◆ scale_new()

static int scale_new	(	AVFrame *	dst,
		const AVFrame *	src,
		const struct mode *	mode,
		const struct options *	opts,
		int64_t *	out_time )

static

Definition at line 248 of file swscale.c.

Referenced by run_test().

◆ scale_legacy()

static int scale_legacy	(	AVFrame *	dst,
		const AVFrame *	src,
		const struct mode *	mode,
		const struct options *	opts,
		int64_t *	out_time )

static

Definition at line 282 of file swscale.c.

Referenced by run_test().

◆ scale_hw()

static int scale_hw	(	AVFrame *	dst,
		const AVFrame *	src,
		const struct mode *	mode,
		const struct options *	opts,
		int64_t *	out_time )

static

Definition at line 327 of file swscale.c.

Referenced by run_test().

◆ print_test_params()

static void print_test_params	(	char *	buf,
		size_t	buf_size,
		const AVFrame *	src,
		const AVFrame *	dst,
		const struct mode *	mode,
		const struct options *	opts )

static

Definition at line 453 of file swscale.c.

Referenced by print_results().

◆ print_results()

static void print_results	(	const AVFrame *	ref,
		const AVFrame *	src,
		const AVFrame *	dst,
		int	dst_w,
		int	dst_h,
		const struct mode *	mode,
		const struct options *	opts,
		const struct test_results *	r,
		const struct test_results *	ref_r,
		float	expected_loss )

static

The new scaling code does not (yet) perform error diffusion for low bit depth output, which impacts the SSIM score slightly for very low bit-depth formats (e.g. monow, monob). Since this is an expected result, drop the badness from an error to a warning for such cases. This can be removed again once error diffusion is implemented in the new ops code.

Definition at line 471 of file swscale.c.

Referenced by run_test().

◆ init_frame()

static int init_frame	(	AVFrame **	pframe,
		const AVFrame *	ref,
		int	width,
		int	height,
		enum AVPixelFormat	format )

static

Definition at line 553 of file swscale.c.

Referenced by run_test().

◆ run_test()

static int run_test	(	enum AVPixelFormat	src_fmt,
		enum AVPixelFormat	dst_fmt,
		int	dst_w,
		int	dst_h,
		const struct mode *	mode,
		const struct options *	opts,
		const AVFrame *	ref,
		AVFrame **	psrc,
		const struct test_results *	ref_r )

static

Definition at line 568 of file swscale.c.

Referenced by run_file_tests(), and run_self_tests().

◆ fmt_is_subsampled()

static int fmt_is_subsampled ( enum AVPixelFormat fmt )

inlinestatic

Definition at line 671 of file swscale.c.

Referenced by fmt_disabled().

◆ fmt_is_supported_by_hw()

static int fmt_is_supported_by_hw ( enum AVPixelFormat fmt )

inlinestatic

Definition at line 677 of file swscale.c.

Referenced by fmt_disabled().

◆ fmt_disabled()

static int fmt_disabled	(	const struct options *	opts,
		enum AVPixelFormat	fmt )

inlinestatic

Definition at line 692 of file swscale.c.

Referenced by run_self_tests().

◆ test_formats()

static int test_formats	(	const struct options *	opts,
		enum AVPixelFormat	src,
		enum AVPixelFormat	dst )

inlinestatic

Definition at line 699 of file swscale.c.

Referenced by run_self_tests().

◆ run_self_tests()

static int run_self_tests	(	const AVFrame *	ref,
		const struct options *	opts )

static

Definition at line 715 of file swscale.c.

Referenced by main().

◆ run_file_tests()

static int run_file_tests	(	const AVFrame *	ref,
		FILE *	fp,
		const struct options *	opts )

static

Definition at line 788 of file swscale.c.

Referenced by main().

◆ init_ref()

static int init_ref	(	AVFrame *	ref,
		const struct options *	opts )

static

Definition at line 861 of file swscale.c.

Referenced by main().

◆ parse_size()

static int parse_size	(	struct options *	opts,
		const char *	str,
		char **	pbuf )

static

Definition at line 895 of file swscale.c.

Referenced by parse_options().

◆ parse_implementation()

static int parse_implementation ( const char * str )

static

Definition at line 919 of file swscale.c.

Referenced by parse_options().

◆ parse_options()

static int parse_options	(	int	argc,
		char **	argv,
		struct options *	opts,
		FILE **	fp )

static

Definition at line 928 of file swscale.c.

Referenced by main().

◆ main()

int main	(	int	argc,
		char **	argv )

Definition at line 1123 of file swscale.c.

Variable Documentation

◆ flags

const SwsFlags flags[]

Initial value:

= {
    0, 
    SWS_FAST_BILINEAR,
    SWS_BILINEAR,
    SWS_BICUBIC,
    SWS_X | SWS_BITEXACT,
    SWS_POINT,
    SWS_AREA | SWS_ACCURATE_RND,
    SWS_BICUBIC | SWS_FULL_CHR_H_INT | SWS_FULL_CHR_H_INP,
}

Definition at line 85 of file swscale.c.

◆ prng_state

FFSFC64 prng_state

static

Definition at line 96 of file swscale.c.

Referenced by main(), and run_self_tests().

◆ sws_ref_src

SwsContext* sws_ref_src

static

Definition at line 99 of file swscale.c.

Referenced by main(), run_test(), and test_formats().

◆ sws_src_dst

SwsContext* sws_src_dst

static

Definition at line 100 of file swscale.c.

Referenced by main(), and scale_new().

◆ sws_dst_out

SwsContext* sws_dst_out

static

Definition at line 101 of file swscale.c.

Referenced by main(), run_test(), and test_formats().

◆ hw_device_ctx

AVBufferRef* hw_device_ctx = NULL

static

Definition at line 103 of file swscale.c.

◆ hw_device_constr

AVHWFramesConstraints* hw_device_constr = NULL

static

Definition at line 104 of file swscale.c.

Referenced by fmt_disabled(), fmt_is_supported_by_hw(), main(), and parse_options().

◆ speedup_logavg

double speedup_logavg

static

Definition at line 106 of file swscale.c.

Referenced by exit_handler(), and print_results().

◆ speedup_min

double speedup_min = 1e10

static

Definition at line 107 of file swscale.c.

Referenced by exit_handler(), and print_results().

◆ speedup_max

double speedup_max = 0

static

Definition at line 108 of file swscale.c.

Referenced by exit_handler(), and print_results().

◆ speedup_count

int speedup_count

static

Definition at line 109 of file swscale.c.

Referenced by exit_handler(), and print_results().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ IMPL_NEW

◆ IMPL_LEGACY

Function Documentation

◆ speedup_color()

◆ exit_handler()

◆ estimate_quantization_noise()

◆ fmt_comps()

◆ get_ssim()

◆ get_loss()

◆ unref_buffers()

◆ checked_sws_scale_frame()

◆ scale_new()

◆ scale_legacy()

◆ scale_hw()

◆ print_test_params()

◆ print_results()

◆ init_frame()

◆ run_test()

◆ fmt_is_subsampled()

◆ fmt_is_supported_by_hw()

◆ fmt_disabled()

◆ test_formats()

◆ run_self_tests()

◆ run_file_tests()

◆ init_ref()

◆ parse_size()

◆ parse_implementation()

◆ parse_options()

◆ main()

Variable Documentation

◆ flags

◆ prng_state

◆ sws_ref_src

◆ sws_src_dst

◆ sws_dst_out

◆ hw_device_ctx

◆ hw_device_constr

◆ speedup_logavg

◆ speedup_min

◆ speedup_max

◆ speedup_count