FFmpeg
Data Structures | Macros | Functions | Variables
dxv.c File Reference
#include <stdint.h>
#include "libavutil/imgutils.h"
#include "mathops.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "lzf.h"
#include "texturedsp.h"
#include "thread.h"

Go to the source code of this file.

Data Structures

struct  DXVContext
 
struct  OpcodeTable
 

Macros

#define CHECKPOINT(x)
 

Functions

static void decompress_indices (uint8_t *dst, const uint8_t *src)
 
static int extract_component (int yo0, int yo1, int code)
 
static int cocg_block (uint8_t *plane0, ptrdiff_t stride0, uint8_t *plane1, ptrdiff_t stride1, const uint8_t *block)
 
static void yao_subblock (uint8_t *dst, uint8_t *yo_indices, ptrdiff_t stride, const uint8_t *block)
 
static int yo_block (uint8_t *dst, ptrdiff_t stride, uint8_t *unused0, ptrdiff_t unused1, const uint8_t *block)
 
static int yao_block (uint8_t *plane0, ptrdiff_t stride0, uint8_t *plane3, ptrdiff_t stride1, const uint8_t *block)
 
static int decompress_texture_thread (AVCodecContext *avctx, void *arg, int slice, int thread_nb)
 
static int dxv_decompress_dxt1 (AVCodecContext *avctx)
 
static int fill_ltable (GetByteContext *gb, uint32_t *table, int *nb_elements)
 
static int fill_optable (unsigned *table0, OpcodeTable *table1, int nb_elements)
 
static int get_opcodes (GetByteContext *gb, uint32_t *table, uint8_t *dst, int op_size, int nb_elements)
 
static int dxv_decompress_opcodes (GetByteContext *gb, void *dstp, size_t op_size)
 
static int dxv_decompress_cgo (DXVContext *ctx, GetByteContext *gb, uint8_t *tex_data, int tex_size, uint8_t *op_data, int *oindex, int op_size, uint8_t **dstp, int *statep, uint8_t **tab0, uint8_t **tab1, int offset)
 
static int dxv_decompress_cocg (DXVContext *ctx, GetByteContext *gb, uint8_t *tex_data, int tex_size, uint8_t *op_data0, uint8_t *op_data1, int max_op_size0, int max_op_size1)
 
static int dxv_decompress_yo (DXVContext *ctx, GetByteContext *gb, uint8_t *tex_data, int tex_size, uint8_t *op_data, int max_op_size)
 
static int dxv_decompress_ycg6 (AVCodecContext *avctx)
 
static int dxv_decompress_yg10 (AVCodecContext *avctx)
 
static int dxv_decompress_dxt5 (AVCodecContext *avctx)
 
static int dxv_decompress_lzf (AVCodecContext *avctx)
 
static int dxv_decompress_raw (AVCodecContext *avctx)
 
static int dxv_decode (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static int dxv_init (AVCodecContext *avctx)
 
static int dxv_close (AVCodecContext *avctx)
 

Variables

const AVCodec ff_dxv_decoder
 

Macro Definition Documentation

◆ CHECKPOINT

#define CHECKPOINT (   x)
Value:
do { \
if (state == 0) { \
value = bytestream2_get_le32(gbc); \
state = 16; \
} \
op = value & 0x3; \
value >>= 2; \
state--; \
switch (op) { \
case 1: \
idx = x; \
break; \
case 2: \
idx = (bytestream2_get_byte(gbc) + 2) * x; \
if (idx > pos) { \
av_log(avctx, AV_LOG_ERROR, "idx %d > %d\n", idx, pos); \
} \
break; \
case 3: \
idx = (bytestream2_get_le16(gbc) + 0x102) * x; \
if (idx > pos) { \
av_log(avctx, AV_LOG_ERROR, "idx %d > %d\n", idx, pos); \
} \
break; \
} \
} while(0)

Definition at line 256 of file dxv.c.

Function Documentation

◆ decompress_indices()

static void decompress_indices ( uint8_t *  dst,
const uint8_t *  src 
)
static

Definition at line 66 of file dxv.c.

Referenced by cocg_block(), and yao_subblock().

◆ extract_component()

static int extract_component ( int  yo0,
int  yo1,
int  code 
)
static

Definition at line 82 of file dxv.c.

Referenced by cocg_block(), and yao_subblock().

◆ cocg_block()

static int cocg_block ( uint8_t *  plane0,
ptrdiff_t  stride0,
uint8_t *  plane1,
ptrdiff_t  stride1,
const uint8_t *  block 
)
static

Definition at line 111 of file dxv.c.

Referenced by dxv_decode().

◆ yao_subblock()

static void yao_subblock ( uint8_t *  dst,
uint8_t *  yo_indices,
ptrdiff_t  stride,
const uint8_t *  block 
)
static

Definition at line 141 of file dxv.c.

Referenced by yao_block(), and yo_block().

◆ yo_block()

static int yo_block ( uint8_t *  dst,
ptrdiff_t  stride,
uint8_t *  unused0,
ptrdiff_t  unused1,
const uint8_t *  block 
)
static

Definition at line 160 of file dxv.c.

Referenced by dxv_decode().

◆ yao_block()

static int yao_block ( uint8_t *  plane0,
ptrdiff_t  stride0,
uint8_t *  plane3,
ptrdiff_t  stride1,
const uint8_t *  block 
)
static

Definition at line 174 of file dxv.c.

Referenced by dxv_decode().

◆ decompress_texture_thread()

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

Definition at line 193 of file dxv.c.

Referenced by dxv_decode().

◆ dxv_decompress_dxt1()

static int dxv_decompress_dxt1 ( AVCodecContext avctx)
static

Definition at line 288 of file dxv.c.

Referenced by dxv_decode().

◆ fill_ltable()

static int fill_ltable ( GetByteContext gb,
uint32_t *  table,
int nb_elements 
)
static

Definition at line 343 of file dxv.c.

Referenced by dxv_decompress_opcodes().

◆ fill_optable()

static int fill_optable ( unsigned *  table0,
OpcodeTable table1,
int  nb_elements 
)
static

Definition at line 387 of file dxv.c.

Referenced by get_opcodes().

◆ get_opcodes()

static int get_opcodes ( GetByteContext gb,
uint32_t *  table,
uint8_t *  dst,
int  op_size,
int  nb_elements 
)
static

Definition at line 428 of file dxv.c.

Referenced by dxv_decompress_opcodes().

◆ dxv_decompress_opcodes()

static int dxv_decompress_opcodes ( GetByteContext gb,
void *  dstp,
size_t  op_size 
)
static

Definition at line 470 of file dxv.c.

Referenced by dxv_decompress_cocg(), and dxv_decompress_yo().

◆ dxv_decompress_cgo()

static int dxv_decompress_cgo ( DXVContext ctx,
GetByteContext gb,
uint8_t *  tex_data,
int  tex_size,
uint8_t *  op_data,
int oindex,
int  op_size,
uint8_t **  dstp,
int statep,
uint8_t **  tab0,
uint8_t **  tab1,
int  offset 
)
static

Definition at line 495 of file dxv.c.

Referenced by dxv_decompress_cocg(), and dxv_decompress_yo().

◆ dxv_decompress_cocg()

static int dxv_decompress_cocg ( DXVContext ctx,
GetByteContext gb,
uint8_t *  tex_data,
int  tex_size,
uint8_t *  op_data0,
uint8_t *  op_data1,
int  max_op_size0,
int  max_op_size1 
)
static

Definition at line 735 of file dxv.c.

Referenced by dxv_decompress_ycg6(), and dxv_decompress_yg10().

◆ dxv_decompress_yo()

static int dxv_decompress_yo ( DXVContext ctx,
GetByteContext gb,
uint8_t *  tex_data,
int  tex_size,
uint8_t *  op_data,
int  max_op_size 
)
static

Definition at line 791 of file dxv.c.

Referenced by dxv_decompress_ycg6().

◆ dxv_decompress_ycg6()

static int dxv_decompress_ycg6 ( AVCodecContext avctx)
static

Definition at line 833 of file dxv.c.

Referenced by dxv_decode().

◆ dxv_decompress_yg10()

static int dxv_decompress_yg10 ( AVCodecContext avctx)
static

Definition at line 849 of file dxv.c.

Referenced by dxv_decode().

◆ dxv_decompress_dxt5()

static int dxv_decompress_dxt5 ( AVCodecContext avctx)
static

Definition at line 866 of file dxv.c.

Referenced by dxv_decode().

◆ dxv_decompress_lzf()

static int dxv_decompress_lzf ( AVCodecContext avctx)
static

Definition at line 1023 of file dxv.c.

Referenced by dxv_decode().

◆ dxv_decompress_raw()

static int dxv_decompress_raw ( AVCodecContext avctx)
static

Definition at line 1029 of file dxv.c.

Referenced by dxv_decode().

◆ dxv_decode()

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

Definition at line 1041 of file dxv.c.

◆ dxv_init()

static int dxv_init ( AVCodecContext avctx)
static

Definition at line 1231 of file dxv.c.

◆ dxv_close()

static int dxv_close ( AVCodecContext avctx)
static

Definition at line 1251 of file dxv.c.

Variable Documentation

◆ ff_dxv_decoder

const AVCodec ff_dxv_decoder
Initial value:
= {
.name = "dxv",
.long_name = NULL_IF_CONFIG_SMALL("Resolume DXV"),
.init = dxv_init,
.decode = dxv_decode,
.close = dxv_close,
.priv_data_size = sizeof(DXVContext),
.capabilities = AV_CODEC_CAP_DR1 |
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
}

Definition at line 1265 of file dxv.c.

FF_CODEC_CAP_INIT_THREADSAFE
#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:42
state
static struct @318 state
dxv_init
static int dxv_init(AVCodecContext *avctx)
Definition: dxv.c:1231
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
op
static int op(uint8_t **dst, const uint8_t *dst_end, GetByteContext *gb, int pixel, int count, int *x, int width, int linesize)
Perform decode operation.
Definition: anm.c:75
dxv_close
static int dxv_close(AVCodecContext *avctx)
Definition: dxv.c:1251
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:113
bytestream2_get_bytes_left
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:158
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AV_CODEC_ID_DXV
@ AV_CODEC_ID_DXV
Definition: codec_id.h:241
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:117
DXVContext
Definition: dxv.c:35
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:50
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
dxv_decode
static int dxv_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dxv.c:1041
pos
unsigned int pos
Definition: spdifenc.c:412
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61