mirror of
https://gitee.com/Vancouver2017/luban-lite-t3e-pro.git
synced 2025-12-15 02:48:54 +00:00
111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
|
|
* Copyright (C) 2020-2022 Artinchip Technology Co. Ltd
|
|
*
|
|
* author: <qi.xu@artinchip.com>
|
|
* Desc: png decode
|
|
*
|
|
*/
|
|
|
|
#ifndef PNG_DECODER_H
|
|
#define PNG_DECODER_H
|
|
|
|
#include "mpp_codec.h"
|
|
#include "ve_buffer.h"
|
|
#include "bytestream.h"
|
|
|
|
#define PNG_MAX_RAWSIZE (1024*1024*8)
|
|
#define INFLATE_MAX_OUTPUT (1024*1024*8)
|
|
|
|
#define ARGB8888 0
|
|
#define ABGR8888 1
|
|
#define RGBA8888 2
|
|
#define BGRA8888 3
|
|
#define RGB888 4
|
|
#define BGR888 5
|
|
#define RGB565 6
|
|
#define BGR565 7
|
|
|
|
#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 PNG_IHDR 0x0001
|
|
#define PNG_IDAT 0x0002
|
|
#define PNG_ALLIMAGE 0x0004
|
|
#define PNG_PLTE 0x0008
|
|
|
|
#define PNGSIG 0x89504e470d0a1a0a
|
|
#define MNGSIG 0x8a4d4e470d0a1a0a
|
|
|
|
enum {
|
|
APNG_DISPOSE_OP_NONE = 0,
|
|
APNG_DISPOSE_OP_BACKGROUND = 1,
|
|
APNG_DISPOSE_OP_PREVIOUS = 2,
|
|
};
|
|
|
|
enum {
|
|
APNG_BLEND_OP_SOURCE = 0,
|
|
APNG_BLEND_OP_OVER = 1,
|
|
};
|
|
|
|
struct png_dec_ctx {
|
|
struct mpp_decoder decoder;
|
|
get_byte_ctx gb;
|
|
|
|
enum mpp_pixel_format pix_fmt; // output pixel format
|
|
struct frame* curr_frame; // current output frame
|
|
struct packet* curr_packet;
|
|
|
|
struct ve_buffer_allocator *ve_buf_handle;
|
|
int bitstream_buffer_size;
|
|
int ve_fd;
|
|
|
|
int packet_size;
|
|
|
|
void *reg_list;
|
|
unsigned long regs_base;
|
|
|
|
struct ve_buffer *filter_mpp_buf;
|
|
struct ve_buffer *palette_mpp_buf;
|
|
struct ve_buffer *lz77_mpp_buf;
|
|
struct ve_buffer *idat_mpp_buf;
|
|
int idat_data_size; // inflate data size in IDAT
|
|
|
|
int state;
|
|
int width, height; // width and height in IHDR
|
|
|
|
int stride; // align output width
|
|
|
|
int cur_w, cur_h;
|
|
int x_offset, y_offset;
|
|
uint8_t dispose_op, blend_op;
|
|
uint8_t last_dispose_op;
|
|
int bit_depth;
|
|
int color_type;
|
|
int compression_type;
|
|
int filter_type;
|
|
int channels;
|
|
int bits_per_pixel;
|
|
|
|
uint32_t palette[256];
|
|
|
|
int hw_size;
|
|
int vbv_offset;
|
|
};
|
|
|
|
#endif /* PNG_DECODER_H */
|