33 0, 1, 2, 3, 4, 5, 6, 7,
34 8, 9, 12, 15, 20, 25, 34, 46,
35 64, 82, 94, 103, 108, 113, 116, 119,
36 120, 121, 122, 123, 124, 125, 126, 127
40 void *
data,
int *got_frame,
44 int buf_size = avpkt->
size;
50 int y0, y1, y2, y3 = 0, c0 = 0,
c1 = 0;
52 if (avctx->
width % 4) {
76 for (j = 0; j < avctx->
width; j += 4) {
80 val = ((
val >> 16) & 0xFFFF) | ((
val & 0xFFFF) << 16);
83 y0 = (
val & 0x1F) << 2;
94 c0 = (
val & 0x1F) << 2;
99 c1 = (
val & 0x1F) << 2;
112 buf += avctx->
width + 4;
static double val(void *priv, double ch)
Libavcodec external API header.
common internal and external API header
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_PICTURE_TYPE_I
Intra.
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int key_frame
1 -> keyframe, 0-> not
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
enum AVPictureType pict_type
Picture type of the frame.
This structure stores compressed data.
static av_cold int decode_init(AVCodecContext *avctx)
static const int xl_table[32]
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)