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misc drawing utilities More...
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Data Structures | |
struct | FFDrawContext |
struct | FFDrawColor |
Macros | |
#define | MAX_PLANES 4 |
Functions | |
int | ff_fill_rgba_map (uint8_t *rgba_map, enum AVPixelFormat pix_fmt) |
int | ff_fill_line_with_color (uint8_t *line[4], int pixel_step[4], int w, uint8_t dst_color[4], enum AVPixelFormat pix_fmt, uint8_t rgba_color[4], int *is_packed_rgba, uint8_t rgba_map[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 AVPixelFormat format, unsigned flags) |
Init a draw context. | |
void | ff_draw_color (FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4]) |
Prepare a color. | |
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. | |
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. | |
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. | |
misc drawing utilities
Definition in file drawutils.h.
#define MAX_PLANES 4 |
Definition at line 46 of file drawutils.h.
int ff_fill_rgba_map | ( | uint8_t * | rgba_map, |
enum AVPixelFormat | pix_fmt | ||
) |
Definition at line 33 of file drawutils.c.
Referenced by config_input(), config_input_main(), config_input_overlay(), config_input_ref(), config_output(), config_props(), ff_draw_color(), and ff_fill_line_with_color().
int ff_fill_line_with_color | ( | uint8_t * | line[4], |
int | pixel_step[4], | ||
int | w, | ||
uint8_t | dst_color[4], | ||
enum AVPixelFormat | pix_fmt, | ||
uint8_t | rgba_color[4], | ||
int * | is_packed_rgba, | ||
uint8_t | rgba_map[4] | ||
) |
Definition at line 62 of file drawutils.c.
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 105 of file drawutils.c.
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 127 of file drawutils.c.
int ff_draw_init | ( | FFDrawContext * | draw, |
enum AVPixelFormat | 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 149 of file drawutils.c.
Referenced by config_input(), config_props(), and ff_draw_supported_pixel_formats().
void ff_draw_color | ( | FFDrawContext * | draw, |
FFDrawColor * | color, | ||
const uint8_t | rgba[4] | ||
) |
Prepare a color.
Definition at line 193 of file drawutils.c.
Referenced by config_input(), config_props(), and overlay_ass_image().
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 233 of file drawutils.c.
Referenced by filter_frame().
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 255 of file drawutils.c.
Referenced by draw_blank_frame(), and filter_frame().
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 350 of file drawutils.c.
Referenced by draw_text().
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 448 of file drawutils.c.
Referenced by draw_glyphs(), and overlay_ass_image().
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 508 of file drawutils.c.
Referenced by config_input().
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 520 of file drawutils.c.
Referenced by query_formats().