#include <string.h>#include "libavutil/avutil.h"#include "libavutil/colorspace.h"#include "libavutil/mem.h"#include "libavutil/pixdesc.h"#include "drawutils.h"#include "formats.h"Go to the source code of this file.
Enumerations | |
| enum | { RED = 0, GREEN, BLUE, ALPHA } |
Functions | |
| int | ff_fill_rgba_map (uint8_t *rgba_map, enum PixelFormat pix_fmt) |
| int | ff_fill_line_with_color (uint8_t *line[4], int pixel_step[4], int w, uint8_t dst_color[4], enum PixelFormat pix_fmt, uint8_t rgba_color[4], int *is_packed_rgba, uint8_t rgba_map_ptr[4]) |
| void | ff_draw_rectangle (uint8_t *dst[4], int dst_linesize[4], uint8_t *src[4], int pixelstep[4], int hsub, int vsub, int x, int y, int w, int h) |
| void | ff_copy_rectangle (uint8_t *dst[4], int dst_linesize[4], uint8_t *src[4], int src_linesize[4], int pixelstep[4], int hsub, int vsub, int x, int y, int y2, int w, int h) |
| int | ff_draw_init (FFDrawContext *draw, enum PixelFormat format, unsigned flags) |
| Init a draw context. | |
| void | ff_draw_color (FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4]) |
| Prepare a color. | |
| static uint8_t * | pointer_at (FFDrawContext *draw, uint8_t *data[], int linesize[], int plane, int x, int y) |
| void | ff_copy_rectangle2 (FFDrawContext *draw, uint8_t *dst[], int dst_linesize[], uint8_t *src[], int src_linesize[], int dst_x, int dst_y, int src_x, int src_y, int w, int h) |
| Copy a rectangle from an image to another. | |
| void | ff_fill_rectangle (FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_x, int dst_y, int w, int h) |
| Fill a rectangle with an uniform color. | |
| static void | clip_interval (int wmax, int *x, int *w, int *dx) |
| Clip interval [x; x+w[ within [0; wmax[. | |
| static void | subsampling_bounds (int sub, int *x, int *w, int *start, int *end) |
| Decompose w pixels starting at x into start + (w starting at x) + end with x and w aligned on multiples of 1<<sub. | |
| static int | component_used (FFDrawContext *draw, int plane, int comp) |
| static void | blend_line (uint8_t *dst, unsigned src, unsigned alpha, int dx, int w, unsigned hsub, int left, int right) |
| void | ff_blend_rectangle (FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_w, int dst_h, int x0, int y0, int w, int h) |
| Blend a rectangle with an uniform color. | |
| static void | blend_pixel (uint8_t *dst, unsigned src, unsigned alpha, uint8_t *mask, int mask_linesize, int l2depth, unsigned w, unsigned h, unsigned shift, unsigned xm0) |
| static void | blend_line_hv (uint8_t *dst, int dst_delta, unsigned src, unsigned alpha, uint8_t *mask, int mask_linesize, int l2depth, int w, unsigned hsub, unsigned vsub, int xm, int left, int right, int hband) |
| void | ff_blend_mask (FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_w, int dst_h, uint8_t *mask, int mask_linesize, int mask_w, int mask_h, int l2depth, unsigned endianness, int x0, int y0) |
| Blend an alpha mask with an uniform color. | |
| int | ff_draw_round_to_sub (FFDrawContext *draw, int sub_dir, int round_dir, int value) |
| Round a dimension according to subsampling. | |
| AVFilterFormats * | ff_draw_supported_pixel_formats (unsigned flags) |
| Return the list of pixel formats supported by the draw functions. | |
| anonymous enum |
Clip interval [x; x+w[ within [0; wmax[.
The resulting w may be negative if the final interval is empty. dx, if not null, return the difference between in and out value of x.
Definition at line 270 of file drawutils.c.
Referenced by ff_blend_mask(), and ff_blend_rectangle().
| static int component_used | ( | FFDrawContext * | draw, | |
| int | plane, | |||
| int | comp | |||
| ) | [static] |
Definition at line 301 of file drawutils.c.
Referenced by ff_blend_mask(), and ff_blend_rectangle().
| void ff_blend_mask | ( | FFDrawContext * | draw, | |
| FFDrawColor * | color, | |||
| uint8_t * | dst[], | |||
| int | dst_linesize[], | |||
| int | dst_w, | |||
| int | dst_h, | |||
| uint8_t * | mask, | |||
| int | mask_linesize, | |||
| int | mask_w, | |||
| int | mask_h, | |||
| int | l2depth, | |||
| unsigned | endianness, | |||
| int | x0, | |||
| int | y0 | |||
| ) |
Blend an alpha mask with an uniform color.
| draw | draw context | |
| color | color for the overlay; | |
| dst | destination image | |
| dst_linesize | line stride of the destination | |
| dst_w | width of the destination image | |
| dst_h | height of the destination image | |
| mask | mask | |
| mask_linesize | line stride of the mask | |
| mask_w | width of the mask | |
| mask_h | height of the mask | |
| l2depth | log2 of depth of the mask (0 for 1bpp, 3 for 8bpp) | |
| endianness | bit order of the mask (0: MSB to the left) | |
| x0 | horizontal position of the overlay | |
| y0 | vertical position of the overlay |
Definition at line 430 of file drawutils.c.
Referenced by draw_glyphs(), and overlay_ass_image().
| void ff_blend_rectangle | ( | FFDrawContext * | draw, | |
| FFDrawColor * | color, | |||
| uint8_t * | dst[], | |||
| int | dst_linesize[], | |||
| int | dst_w, | |||
| int | dst_h, | |||
| int | x0, | |||
| int | y0, | |||
| int | w, | |||
| int | h | |||
| ) |
Blend a rectangle with an uniform color.
Definition at line 332 of file drawutils.c.
Referenced by draw_text().
| void ff_copy_rectangle | ( | uint8_t * | dst[4], | |
| int | dst_linesize[4], | |||
| uint8_t * | src[4], | |||
| int | src_linesize[4], | |||
| int | pixelstep[4], | |||
| int | hsub, | |||
| int | vsub, | |||
| int | x, | |||
| int | y, | |||
| int | y2, | |||
| int | w, | |||
| int | h | |||
| ) |
Definition at line 115 of file drawutils.c.
| void ff_copy_rectangle2 | ( | FFDrawContext * | draw, | |
| uint8_t * | dst[], | |||
| int | dst_linesize[], | |||
| uint8_t * | src[], | |||
| int | src_linesize[], | |||
| int | dst_x, | |||
| int | dst_y, | |||
| int | src_x, | |||
| int | src_y, | |||
| int | w, | |||
| int | h | |||
| ) |
Copy a rectangle from an image to another.
The coordinates must be as even as the subsampling requires.
Definition at line 214 of file drawutils.c.
Referenced by draw_slice().
| void ff_draw_color | ( | FFDrawContext * | draw, | |
| FFDrawColor * | color, | |||
| const uint8_t | rgba[4] | |||
| ) |
Prepare a color.
Definition at line 179 of file drawutils.c.
Referenced by config_input(), and overlay_ass_image().
| int ff_draw_init | ( | FFDrawContext * | draw, | |
| enum PixelFormat | format, | |||
| unsigned | flags | |||
| ) |
Init a draw context.
Only a limited number of pixel formats are supported, if format is not supported the function will return an error. No flags currently defined.
Definition at line 135 of file drawutils.c.
Referenced by config_input(), and ff_draw_supported_pixel_formats().
| void ff_draw_rectangle | ( | uint8_t * | dst[4], | |
| int | dst_linesize[4], | |||
| uint8_t * | src[4], | |||
| int | pixelstep[4], | |||
| int | hsub, | |||
| int | vsub, | |||
| int | x, | |||
| int | y, | |||
| int | w, | |||
| int | h | |||
| ) |
Definition at line 95 of file drawutils.c.
| int ff_draw_round_to_sub | ( | FFDrawContext * | draw, | |
| int | sub_dir, | |||
| int | round_dir, | |||
| int | value | |||
| ) |
Round a dimension according to subsampling.
| draw | draw context | |
| sub_dir | 0 for horizontal, 1 for vertical | |
| round_dir | 0 nearest, -1 round down, +1 round up | |
| value | value to round |
Definition at line 490 of file drawutils.c.
Referenced by config_input(), and draw_slice().
| AVFilterFormats* ff_draw_supported_pixel_formats | ( | unsigned | flags | ) |
Return the list of pixel formats supported by the draw functions.
The flags are the same as ff_draw_init, i.e., none currently.
Definition at line 502 of file drawutils.c.
Referenced by query_formats().
| int ff_fill_line_with_color | ( | uint8_t * | line[4], | |
| int | pixel_step[4], | |||
| int | w, | |||
| uint8_t | dst_color[4], | |||
| enum PixelFormat | pix_fmt, | |||
| uint8_t | rgba_color[4], | |||
| int * | is_packed_rgba, | |||
| uint8_t | rgba_map_ptr[4] | |||
| ) |
Definition at line 52 of file drawutils.c.
| void ff_fill_rectangle | ( | FFDrawContext * | draw, | |
| FFDrawColor * | color, | |||
| uint8_t * | dst[], | |||
| int | dst_linesize[], | |||
| int | dst_x, | |||
| int | dst_y, | |||
| int | w, | |||
| int | h | |||
| ) |
Fill a rectangle with an uniform color.
The coordinates must be as even as the subsampling requires. The color needs to be inited with ff_draw_color.
Definition at line 236 of file drawutils.c.
Referenced by draw_blank_frame(), draw_send_bar_slice(), and draw_slice().
| int ff_fill_rgba_map | ( | uint8_t * | rgba_map, | |
| enum PixelFormat | pix_fmt | |||
| ) |
Definition at line 33 of file drawutils.c.
Referenced by config_input(), config_input_main(), config_input_overlay(), config_props(), ff_draw_color(), and ff_fill_line_with_color().
| static uint8_t* pointer_at | ( | FFDrawContext * | draw, | |
| uint8_t * | data[], | |||
| int | linesize[], | |||
| int | plane, | |||
| int | x, | |||
| int | y | |||
| ) | [static] |
Definition at line 206 of file drawutils.c.
Referenced by ff_blend_mask(), ff_blend_rectangle(), ff_copy_rectangle2(), and ff_fill_rectangle().
Decompose w pixels starting at x into start + (w starting at x) + end with x and w aligned on multiples of 1<<sub.
Definition at line 289 of file drawutils.c.
Referenced by ff_blend_mask(), and ff_blend_rectangle().
1.5.8