FFmpeg  4.4.5
Data Structures | Macros | Enumerations | Functions | Variables
dds.c File Reference

DDS decoder. More...

#include <stdint.h>
#include "libavutil/libm.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "texturedsp.h"
#include "thread.h"

Go to the source code of this file.

Data Structures

struct  DDSContext
 

Macros

#define DDPF_FOURCC   (1 << 2)
 
#define DDPF_PALETTE   (1 << 5)
 
#define DDPF_NORMALMAP   (1U << 31)
 

Enumerations

enum  DDSPostProc {
  DDS_NONE = 0 , DDS_ALPHA_EXP , DDS_NORMAL_MAP , DDS_RAW_YCOCG ,
  DDS_SWAP_ALPHA , DDS_SWIZZLE_A2XY , DDS_SWIZZLE_RBXG , DDS_SWIZZLE_RGXB ,
  DDS_SWIZZLE_RXBG , DDS_SWIZZLE_RXGB , DDS_SWIZZLE_XGBR , DDS_SWIZZLE_XRBG ,
  DDS_SWIZZLE_XGXR
}
 
enum  DDSDXGIFormat {
  DXGI_FORMAT_R16G16B16A16_TYPELESS = 9 , DXGI_FORMAT_R16G16B16A16_FLOAT = 10 , DXGI_FORMAT_R16G16B16A16_UNORM = 11 , DXGI_FORMAT_R16G16B16A16_UINT = 12 ,
  DXGI_FORMAT_R16G16B16A16_SNORM = 13 , DXGI_FORMAT_R16G16B16A16_SINT = 14 , DXGI_FORMAT_R8G8B8A8_TYPELESS = 27 , DXGI_FORMAT_R8G8B8A8_UNORM = 28 ,
  DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29 , DXGI_FORMAT_R8G8B8A8_UINT = 30 , DXGI_FORMAT_R8G8B8A8_SNORM = 31 , DXGI_FORMAT_R8G8B8A8_SINT = 32 ,
  DXGI_FORMAT_BC1_TYPELESS = 70 , DXGI_FORMAT_BC1_UNORM = 71 , DXGI_FORMAT_BC1_UNORM_SRGB = 72 , DXGI_FORMAT_BC2_TYPELESS = 73 ,
  DXGI_FORMAT_BC2_UNORM = 74 , DXGI_FORMAT_BC2_UNORM_SRGB = 75 , DXGI_FORMAT_BC3_TYPELESS = 76 , DXGI_FORMAT_BC3_UNORM = 77 ,
  DXGI_FORMAT_BC3_UNORM_SRGB = 78 , DXGI_FORMAT_BC4_TYPELESS = 79 , DXGI_FORMAT_BC4_UNORM = 80 , DXGI_FORMAT_BC4_SNORM = 81 ,
  DXGI_FORMAT_BC5_TYPELESS = 82 , DXGI_FORMAT_BC5_UNORM = 83 , DXGI_FORMAT_BC5_SNORM = 84 , DXGI_FORMAT_B5G6R5_UNORM = 85 ,
  DXGI_FORMAT_B8G8R8A8_UNORM = 87 , DXGI_FORMAT_B8G8R8X8_UNORM = 88 , DXGI_FORMAT_B8G8R8A8_TYPELESS = 90 , DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91 ,
  DXGI_FORMAT_B8G8R8X8_TYPELESS = 92 , DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93
}
 

Functions

static int parse_pixel_format (AVCodecContext *avctx)
 
static int decompress_texture_thread (AVCodecContext *avctx, void *arg, int slice, int thread_nb)
 
static void do_swizzle (AVFrame *frame, int x, int y)
 
static void run_postproc (AVCodecContext *avctx, AVFrame *frame)
 
static int dds_decode (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 

Variables

AVCodec ff_dds_decoder
 

Detailed Description

DDS decoder.

https://msdn.microsoft.com/en-us/library/bb943982%28v=vs.85%29.aspx

Definition in file dds.c.

Macro Definition Documentation

◆ DDPF_FOURCC

#define DDPF_FOURCC   (1 << 2)

Definition at line 40 of file dds.c.

◆ DDPF_PALETTE

#define DDPF_PALETTE   (1 << 5)

Definition at line 41 of file dds.c.

◆ DDPF_NORMALMAP

#define DDPF_NORMALMAP   (1U << 31)

Definition at line 42 of file dds.c.

Enumeration Type Documentation

◆ DDSPostProc

Enumerator
DDS_NONE 
DDS_ALPHA_EXP 
DDS_NORMAL_MAP 
DDS_RAW_YCOCG 
DDS_SWAP_ALPHA 
DDS_SWIZZLE_A2XY 
DDS_SWIZZLE_RBXG 
DDS_SWIZZLE_RGXB 
DDS_SWIZZLE_RXBG 
DDS_SWIZZLE_RXGB 
DDS_SWIZZLE_XGBR 
DDS_SWIZZLE_XRBG 
DDS_SWIZZLE_XGXR 

Definition at line 44 of file dds.c.

◆ DDSDXGIFormat

Enumerator
DXGI_FORMAT_R16G16B16A16_TYPELESS 
DXGI_FORMAT_R16G16B16A16_FLOAT 
DXGI_FORMAT_R16G16B16A16_UNORM 
DXGI_FORMAT_R16G16B16A16_UINT 
DXGI_FORMAT_R16G16B16A16_SNORM 
DXGI_FORMAT_R16G16B16A16_SINT 
DXGI_FORMAT_R8G8B8A8_TYPELESS 
DXGI_FORMAT_R8G8B8A8_UNORM 
DXGI_FORMAT_R8G8B8A8_UNORM_SRGB 
DXGI_FORMAT_R8G8B8A8_UINT 
DXGI_FORMAT_R8G8B8A8_SNORM 
DXGI_FORMAT_R8G8B8A8_SINT 
DXGI_FORMAT_BC1_TYPELESS 
DXGI_FORMAT_BC1_UNORM 
DXGI_FORMAT_BC1_UNORM_SRGB 
DXGI_FORMAT_BC2_TYPELESS 
DXGI_FORMAT_BC2_UNORM 
DXGI_FORMAT_BC2_UNORM_SRGB 
DXGI_FORMAT_BC3_TYPELESS 
DXGI_FORMAT_BC3_UNORM 
DXGI_FORMAT_BC3_UNORM_SRGB 
DXGI_FORMAT_BC4_TYPELESS 
DXGI_FORMAT_BC4_UNORM 
DXGI_FORMAT_BC4_SNORM 
DXGI_FORMAT_BC5_TYPELESS 
DXGI_FORMAT_BC5_UNORM 
DXGI_FORMAT_BC5_SNORM 
DXGI_FORMAT_B5G6R5_UNORM 
DXGI_FORMAT_B8G8R8A8_UNORM 
DXGI_FORMAT_B8G8R8X8_UNORM 
DXGI_FORMAT_B8G8R8A8_TYPELESS 
DXGI_FORMAT_B8G8R8A8_UNORM_SRGB 
DXGI_FORMAT_B8G8R8X8_TYPELESS 
DXGI_FORMAT_B8G8R8X8_UNORM_SRGB 

Definition at line 60 of file dds.c.

Function Documentation

◆ parse_pixel_format()

static int parse_pixel_format ( AVCodecContext avctx)
static

Definition at line 116 of file dds.c.

Referenced by dds_decode().

◆ decompress_texture_thread()

static int decompress_texture_thread ( AVCodecContext avctx,
void arg,
int  slice,
int  thread_nb 
)
static

Definition at line 436 of file dds.c.

Referenced by dds_decode().

◆ do_swizzle()

static void do_swizzle ( AVFrame frame,
int  x,
int  y 
)
static

Definition at line 473 of file dds.c.

Referenced by run_postproc().

◆ run_postproc()

static void run_postproc ( AVCodecContext avctx,
AVFrame frame 
)
static

Definition at line 482 of file dds.c.

Referenced by dds_decode().

◆ dds_decode()

static int dds_decode ( AVCodecContext avctx,
void data,
int got_frame,
AVPacket avpkt 
)
static

Definition at line 608 of file dds.c.

Variable Documentation

◆ ff_dds_decoder

AVCodec ff_dds_decoder
Initial value:
= {
.name = "dds",
.long_name = NULL_IF_CONFIG_SMALL("DirectDraw Surface image decoder"),
.decode = dds_decode,
.priv_data_size = sizeof(DDSContext),
}
static int dds_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dds.c:608
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:112
@ AV_CODEC_ID_DDS
Definition: codec_id.h:239
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:41
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
Definition: dds.c:99

Definition at line 751 of file dds.c.