#include "libavutil/avassert.h"
#include "libavutil/error.h"
#include "libavutil/imgutils.h"
#include "libavutil/macros.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/slicethread.h"
#include "libswscale/swscale.h"
#include "libswscale/utils.h"
#include "swscale_internal.h"
#include "graph.h"

Functions
static int	pass_alloc_output (SwsPass *pass)

static SwsPass *	pass_add (SwsGraph graph, void priv, enum AVPixelFormat fmt, int w, int h, SwsPass *input, int slice_align, sws_filter_run_t run)

static int	pass_append (SwsGraph graph, void priv, enum AVPixelFormat fmt, int w, int h, SwsPass **pass, int slice_align, sws_filter_run_t run)

static int	vshift (enum AVPixelFormat fmt, int plane)

static SwsImg	shift_img (const SwsImg *img_base, int y)

static void	run_copy (const SwsImg out_base, const SwsImg in_base, int y, int h, const SwsPass *pass)

static void	run_rgb0 (const SwsImg out, const SwsImg in, int y, int h, const SwsPass *pass)

static void	run_xyz2rgb (const SwsImg out, const SwsImg in, int y, int h, const SwsPass *pass)

static void	run_rgb2xyz (const SwsImg out, const SwsImg in, int y, int h, const SwsPass *pass)

static void	free_legacy_swscale (void *priv)

static void	setup_legacy_swscale (const SwsImg out, const SwsImg in, const SwsPass *pass)

static SwsContext *	slice_ctx (const SwsPass *pass, int y)

static void	run_legacy_unscaled (const SwsImg out, const SwsImg in_base, int y, int h, const SwsPass *pass)

static void	run_legacy_swscale (const SwsImg out_base, const SwsImg in, int y, int h, const SwsPass *pass)

static void	get_chroma_pos (SwsGraph graph, int h_chr_pos, int v_chr_pos, const SwsFormat fmt)

static void	legacy_chr_pos (SwsGraph graph, int chr_pos, int override, int *warned)

static int	init_legacy_subpass (SwsGraph graph, SwsContext sws, int cascaded, SwsPass input, SwsPass *output)

static int	add_legacy_sws_pass (SwsGraph graph, SwsFormat src, SwsFormat dst, SwsPass input, SwsPass **output)

static int	init_passes (SwsGraph *graph)

static void	sws_graph_worker (void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads)

int	sws_graph_create (SwsContext ctx, const SwsFormat dst, const SwsFormat src, int field, SwsGraph *out_graph)
	Allocate and initialize the filter graph. More...

void	sws_graph_free (SwsGraph **pgraph)
	Uninitialize any state associate with this filter graph and free it. More...

static int	opts_equal (const SwsContext c1, const SwsContext c2)

int	sws_graph_reinit (SwsContext ctx, const SwsFormat dst, const SwsFormat src, int field, SwsGraph *out_graph)
	Wrapper around sws_graph_create that does nothing if the format is unchanged. More...

void	sws_graph_run (SwsGraph graph, uint8_t const out_data[4], const int out_linesize[4], const uint8_t *const in_data[4], const int in_linesize[4])
	Dispatch the filter graph on a single field. More...

Function Documentation

◆ pass_alloc_output()

static int pass_alloc_output ( SwsPass * pass )

static

Definition at line 36 of file graph.c.

Referenced by pass_add().

◆ pass_add()

static SwsPass* pass_add	(	SwsGraph *	graph,
		void *	priv,
		enum AVPixelFormat	fmt,
		int	w,
		int	h,
		SwsPass *	input,
		int	slice_align,
		sws_filter_run_t	run
	)

static

Definition at line 46 of file graph.c.

Referenced by init_legacy_subpass(), init_passes(), and pass_append().

◆ pass_append()

static int pass_append	(	SwsGraph *	graph,
		void *	priv,
		enum AVPixelFormat	fmt,
		int	w,
		int	h,
		SwsPass **	pass,
		int	slice_align,
		sws_filter_run_t	run
	)

static

Definition at line 86 of file graph.c.

Referenced by init_legacy_subpass().

◆ vshift()

static int vshift	(	enum AVPixelFormat	fmt,
		int	plane
	)

static

Definition at line 97 of file graph.c.

Referenced by alloc_plane(), chroma_mc_bi(), chroma_mc_uni(), encode_frame(), ff_h264_draw_horiz_band(), ff_hevc_hls_residual_coding(), ff_intra_pred_8_16x16_msa(), ff_intra_pred_8_32x32_msa(), ff_mjpeg_decode_frame_from_buf(), ff_sws_slice_worker(), frame_end(), hls_transform_unit(), intra_pred(), restore_tqb_pixels(), run_copy(), and shift_img().

◆ shift_img()

static SwsImg shift_img	(	const SwsImg *	img_base,
		int	y
	)

static

Definition at line 104 of file graph.c.

Referenced by run_copy(), run_legacy_swscale(), and run_legacy_unscaled().

◆ run_copy()

static void run_copy	(	const SwsImg *	out_base,
		const SwsImg *	in_base,
		int	y,
		int	h,
		const SwsPass *	pass
	)

static

Definition at line 112 of file graph.c.

Referenced by init_passes().

◆ run_rgb0()

static void run_rgb0	(	const SwsImg *	out,
		const SwsImg *	in,
		int	y,
		int	h,
		const SwsPass *	pass
	)

static

Definition at line 133 of file graph.c.

Referenced by init_legacy_subpass().

◆ run_xyz2rgb()

static void run_xyz2rgb	(	const SwsImg *	out,
		const SwsImg *	in,
		int	y,
		int	h,
		const SwsPass *	pass
	)

static

Definition at line 154 of file graph.c.

Referenced by init_legacy_subpass().

◆ run_rgb2xyz()

static void run_rgb2xyz	(	const SwsImg *	out,
		const SwsImg *	in,
		int	y,
		int	h,
		const SwsPass *	pass
	)

static

Definition at line 162 of file graph.c.

Referenced by init_legacy_subpass().

◆ free_legacy_swscale()

static void free_legacy_swscale ( void * priv )

static

Definition at line 176 of file graph.c.

Referenced by init_legacy_subpass().

◆ setup_legacy_swscale()

static void setup_legacy_swscale	(	const SwsImg *	out,
		const SwsImg *	in,
		const SwsPass *	pass
	)

static

Definition at line 182 of file graph.c.

Referenced by init_legacy_subpass().

◆ slice_ctx()

static SwsContext* slice_ctx	(	const SwsPass *	pass,
		int	y
	)

inlinestatic

Definition at line 196 of file graph.c.

Referenced by run_legacy_swscale(), and run_legacy_unscaled().

◆ run_legacy_unscaled()

static void run_legacy_unscaled	(	const SwsImg *	out,
		const SwsImg *	in_base,
		int	y,
		int	h,
		const SwsPass *	pass
	)

static

Definition at line 215 of file graph.c.

Referenced by init_legacy_subpass().

◆ run_legacy_swscale()

static void run_legacy_swscale	(	const SwsImg *	out_base,
		const SwsImg *	in,
		int	y,
		int	h,
		const SwsPass *	pass
	)

static

Definition at line 226 of file graph.c.

Referenced by init_legacy_subpass().

◆ get_chroma_pos()

static void get_chroma_pos	(	SwsGraph *	graph,
		int *	h_chr_pos,
		int *	v_chr_pos,
		const SwsFormat *	fmt
	)

static

Definition at line 237 of file graph.c.

Referenced by add_legacy_sws_pass().

◆ legacy_chr_pos()

static void legacy_chr_pos	(	SwsGraph *	graph,
		int *	chr_pos,
		int	override,
		int *	warned
	)

static

Definition at line 280 of file graph.c.

Referenced by add_legacy_sws_pass().

◆ init_legacy_subpass()

static int init_legacy_subpass	(	SwsGraph *	graph,
		SwsContext *	sws,
		int	cascaded,
		SwsPass *	input,
		SwsPass **	output
	)

static

For slice threading, we need to create sub contexts, similar to how swscale normally handles it internally. The most important difference is that we handle cascaded contexts before threaded contexts; whereas context_init_threaded() does it the other way around.

Definition at line 295 of file graph.c.

Referenced by add_legacy_sws_pass().

◆ add_legacy_sws_pass()

static int add_legacy_sws_pass	(	SwsGraph *	graph,
		SwsFormat	src,
		SwsFormat	dst,
		SwsPass *	input,
		SwsPass **	output
	)

static

Definition at line 395 of file graph.c.

Referenced by init_passes().

◆ init_passes()

static int init_passes ( SwsGraph * graph )

static

Definition at line 469 of file graph.c.

Referenced by sws_graph_create().

◆ sws_graph_worker()

static void sws_graph_worker	(	void *	priv,
		int	jobnr,
		int	threadnr,
		int	nb_jobs,
		int	nb_threads
	)

static

Definition at line 495 of file graph.c.

Referenced by sws_graph_create().

◆ sws_graph_create()

int sws_graph_create	(	SwsContext *	ctx,
		const SwsFormat *	dst,
		const SwsFormat *	src,
		int	field,
		SwsGraph **	out_graph
	)

Allocate and initialize the filter graph.

Returns 0 or a negative error.

Definition at line 508 of file graph.c.

Referenced by sws_graph_reinit().

◆ sws_graph_free()

void sws_graph_free ( SwsGraph ** pgraph )

Uninitialize any state associate with this filter graph and free it.

Definition at line 546 of file graph.c.

Referenced by sws_frame_setup(), sws_freeContext(), sws_graph_create(), and sws_graph_reinit().

◆ opts_equal()

static int opts_equal	(	const SwsContext *	c1,
		const SwsContext *	c2
	)

static

Definition at line 569 of file graph.c.

Referenced by sws_graph_reinit().

◆ sws_graph_reinit()

int sws_graph_reinit	(	SwsContext *	ctx,
		const SwsFormat *	dst,
		const SwsFormat *	src,
		int	field,
		SwsGraph **	graph
	)

Wrapper around sws_graph_create that does nothing if the format is unchanged.

Must be called after changing any of the fields in ctx, or else they will have no effect.

Definition at line 584 of file graph.c.

Referenced by sws_frame_setup().

◆ sws_graph_run()

void sws_graph_run	(	SwsGraph *	graph,
		uint8_t *const	out_data[4],
		const int	out_linesize[4],
		const uint8_t *const	in_data[4],
		const int	in_linesize[4]
	)

Dispatch the filter graph on a single field.

Internally threaded.

Definition at line 598 of file graph.c.

Referenced by sws_scale_frame().

Functions

Function Documentation

◆ pass_alloc_output()

◆ pass_add()

◆ pass_append()

◆ vshift()

◆ shift_img()

◆ run_copy()

◆ run_rgb0()

◆ run_xyz2rgb()

◆ run_rgb2xyz()

◆ free_legacy_swscale()

◆ setup_legacy_swscale()

◆ slice_ctx()

◆ run_legacy_unscaled()

◆ run_legacy_swscale()

◆ get_chroma_pos()

◆ legacy_chr_pos()

◆ init_legacy_subpass()

◆ add_legacy_sws_pass()

◆ init_passes()

◆ sws_graph_worker()

◆ sws_graph_create()

◆ sws_graph_free()

◆ opts_equal()

◆ sws_graph_reinit()

◆ sws_graph_run()