39 { 0x1FD, 9 }, { 0xFD, 8 }, { 0x7D, 7 }, { 0x3D, 6 }, { 0x1D, 5 }, { 0x0D, 4 }, { 0x005, 3 },
41 { 0x004, 3 }, { 0x0C, 4 }, { 0x1C, 5 }, { 0x3C, 6 }, { 0x7C, 7 }, { 0xFC, 8 }, { 0x1FC, 9 }, { 0xFF, 8 }
44 #define CODE_VLC_BITS 9
55 return base_value + ((v - 7) << w->
shift);
59 void *
data,
int *got_frame,
64 int buf_size = avpkt->
size;
66 unsigned char *
Y,*
U,*
V;
68 int prev_y = 0, prev_u = 0, prev_v = 0;
89 for (i = 8; i < buf_size; i++)
98 l->
shift = 8 - (buf[2] >> 4);
101 "Unknown WNV1 frame header value %i",
107 "Unknown WNV1 frame header value %i",
116 for (j = 0; j < avctx->
height; j++) {
117 for (i = 0; i < avctx->
width / 2; i++) {
141 code_vlc.
table = code_table;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static av_cold int init(AVCodecContext *avctx)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
bitstream reader API header.
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
const char * name
Name of the codec implementation.
Libavcodec external API header.
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
static int wnv1_get_code(WNV1Context *w, int base_value)
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
int width
picture width / height.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
#define INIT_VLC_USE_NEW_STATIC
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
static const uint16_t code_tab[16][2]
VLC_TYPE(* table)[2]
code, bits
int key_frame
1 -> keyframe, 0-> not
static av_cold int decode_init(AVCodecContext *avctx)
const uint8_t ff_reverse[256]
This structure stores compressed data.