FFmpeg
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Macros | |
#define | PNG_COLOR_MASK_PALETTE 1 |
#define | PNG_COLOR_MASK_COLOR 2 |
#define | PNG_COLOR_MASK_ALPHA 4 |
#define | PNG_COLOR_TYPE_GRAY 0 |
#define | PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE) |
#define | PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR) |
#define | PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA) |
#define | PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA) |
#define | PNG_FILTER_TYPE_LOCO 64 |
#define | PNG_FILTER_VALUE_NONE 0 |
#define | PNG_FILTER_VALUE_SUB 1 |
#define | PNG_FILTER_VALUE_UP 2 |
#define | PNG_FILTER_VALUE_AVG 3 |
#define | PNG_FILTER_VALUE_PAETH 4 |
#define | PNG_FILTER_VALUE_MIXED 5 |
#define | NB_PASSES 7 |
#define | PNGSIG 0x89504e470d0a1a0a |
#define | MNGSIG 0x8a4d4e470d0a1a0a |
Functions | |
int | ff_png_get_nb_channels (int color_type) |
int | ff_png_pass_row_size (int pass, int bits_per_pixel, int width) |
void | ff_add_png_paeth_prediction (uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp) |
void | ff_png_filter_row (PNGDSPContext *dsp, uint8_t *dst, int filter_type, uint8_t *src, uint8_t *last, int size, int bpp) |
Variables | |
const uint8_t | ff_png_pass_ymask [NB_PASSES] |
#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE) |
#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR) |
#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA) |
#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA) |
Definition at line 41 of file png.c.
Referenced by decode_idat_chunk(), decode_sbit_chunk(), encode_headers(), and png_enc_init().
Definition at line 54 of file png.c.
Referenced by decode_idat_chunk(), encode_frame(), and png_handle_row().
Definition at line 218 of file pngdec.c.
Referenced by ff_png_filter_row(), and ff_pngdsp_init().
void ff_png_filter_row | ( | PNGDSPContext * | dsp, |
uint8_t * | dst, | ||
int | filter_type, | ||
uint8_t * | src, | ||
uint8_t * | last, | ||
int | size, | ||
int | bpp | ||
) |
Definition at line 284 of file pngdec.c.
Referenced by handle_row(), and png_handle_row().
const uint8_t ff_png_pass_ymask[NB_PASSES] |
Definition at line 27 of file png.c.
Referenced by encode_frame(), and png_handle_row().