51 0x0660, 0xFF00, 0xCCCC, 0xF000, 0x8888, 0x000F, 0x1111, 0xFEC8,
52 0x8CEF, 0x137F, 0xF731, 0xC800, 0x008C, 0x0013, 0x3100, 0xCC00,
53 0x00CC, 0x0033, 0x3300, 0x0FF0, 0x6666, 0x00F0, 0x0F00, 0x2222,
54 0x4444, 0xF600, 0x8CC8, 0x006F, 0x1331, 0x318C, 0xC813, 0x33CC,
55 0x6600, 0x0CC0, 0x0066, 0x0330, 0xF900, 0xC88C, 0x009F, 0x3113,
56 0x6000, 0x0880, 0x0006, 0x0110, 0xCC88, 0xFC00, 0x00CF, 0x88CC,
57 0x003F, 0x1133, 0x3311, 0xF300, 0x6FF6, 0x0603, 0x08C6, 0x8C63,
58 0xC631, 0x6310, 0xC060, 0x0136, 0x136C, 0x36C8, 0x6C80, 0x324C
65 start = bytestream2_get_byte(&c->
stream);
66 size = (bytestream2_get_byte(&c->
stream) - 1) & 0xFF;
67 if(start + size > 255){
71 if(size*3+2 > data_size){
75 for(i = start; i <= start +
size; i++)
76 c->
pal[i] = bytestream2_get_be24(&c->
stream);
79 static inline int check_pixel(uint8_t *buf, uint8_t *start, uint8_t *end)
81 return buf >= start && buf < end;
84 static inline int check_line(uint8_t *buf, uint8_t *start, uint8_t *end)
86 return buf >= start && (buf + 4) <= end;
93 int blk, blocks,
t, blk2;
108 for(blk = 0; blk < blocks; blk++){
110 blocktypes = bytestream2_get_byte(&g);
112 switch(blocktypes & 0xC0){
114 for(y = 0; y < 4; y++)
116 memcpy(cur + y*width, prev + y*width, 4);
118 memset(cur + y*width, 0, 4);
121 t = bytestream2_get_byte(&g);
127 for(y = 0; y < 4; y++)
130 x = ((t & 0xF)^8) - 8;
131 y = ((t >> 4) ^8) - 8;
133 for(y = 0; y < 4; y++)
134 if(
check_line(prev + t + y*width, pstart, pend))
135 memcpy(cur + y*width, prev + t + y*width, 4);
137 memset(cur + y*width, 0, 4);
141 t = bytestream2_get_byte(&g);
142 for(y = 0; y < 4; y++)
143 memset(cur + y*width, t, 4);
146 t = bytestream2_get_byte(&g);
151 a = bytestream2_get_byte(&g);
152 b = bytestream2_get_byte(&g);
153 for(y = 0; y < 4; y++)
154 for(x = 0; x < 4; x++, pattern >>= 1)
155 cur[x + y*width] = (pattern & 1) ? b :
a;
160 a = bytestream2_get_byte(&g);
161 for(y = 0; y < 4; y++)
162 for(x = 0; x < 4; x++, pattern >>= 1)
163 if(pattern & 1 &&
check_pixel(prev + x + y*width, pstart, pend))
178 if(blk2 == (width >> 2)){
190 uint8_t *outptr, *srcptr;
206 flags = bytestream2_get_le16(&c->
stream);
209 i = (int16_t)bytestream2_get_le16(&c->
stream);
210 j = (int16_t)bytestream2_get_le16(&c->
stream);
211 offset = i + j * avctx->
width;
214 size = bytestream2_get_le32(&c->
stream);
219 size = bytestream2_get_le32(&c->
stream);
229 for(i = 0; i < avctx->
height; i++){
230 memcpy(outptr, srcptr, avctx->
width);
231 srcptr += avctx->
width;
static int check_line(uint8_t *buf, uint8_t *start, uint8_t *end)
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
int(* get_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called at the beginning of each frame to get a buffer for it.
enum PixelFormat pix_fmt
Pixel format, see PIX_FMT_xxx.
void(* release_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called to release buffers which were allocated with get_buffer.
static av_cold int decode_end(AVCodecContext *avctx)
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
uint32_t pal[AVPALETTE_COUNT]
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
static int init(AVCodecParserContext *s)
int reference
is this picture used as reference The values for this are the same as the MpegEncContext.picture_structure variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
static const uint16_t vb_patterns[64]
int width
picture width / height.
struct AVFrame AVFrame
Audio Video Frame.
static int check_pixel(uint8_t *buf, uint8_t *start, uint8_t *end)
struct VBDecContext VBDecContext
int linesize[AV_NUM_DATA_POINTERS]
Size, in bytes, of the data for each picture/channel plane.
main external API structure.
static void close(AVCodecParserContext *s)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int palette_has_changed
Tell user application that palette has changed from previous frame.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static void vb_decode_palette(VBDecContext *c, int data_size)
8 bit with PIX_FMT_RGB32 palette
#define FFSWAP(type, a, b)
static int vb_decode_framedata(VBDecContext *c, int offset)
static av_cold int decode_init(AVCodecContext *avctx)