53 for (
i = 0;
i < 256;
i++)
54 s->palette[
i] = (0xFFU << 24) | bytestream2_get_le32u(&gb);
78 int *x,
int width,
int linesize)
80 int remaining =
width - *x;
82 int striplen =
FFMIN(count, remaining);
87 }
else if (
pixel >= 0)
88 memset(*dst,
pixel, striplen);
90 remaining -= striplen;
93 *dst += linesize -
width;
97 if (*dst >= dst_end)
goto exhausted;
99 if (*dst <= dst_end)
goto exhausted;
102 *x =
width - remaining;
106 *x =
width - remaining;
111 void *
data,
int *got_frame,
115 const int buf_size = avpkt->
size;
118 int count, ret, x = 0;
125 dst =
s->frame->data[0];
126 dst_end =
s->frame->data[0] +
s->frame->linesize[0]*avctx->
height;
130 if (bytestream2_get_byte(&gb) != 0x42) {
134 if (bytestream2_get_byte(&gb)) {
142 #define OP(gb, pixel, count) \
143 op(&dst, dst_end, (gb), (pixel), (count), &x, avctx->width, s->frame->linesize[0])
145 int type = bytestream2_get_byte(&gb);
152 count = bytestream2_get_byte(&gb);
153 pixel = bytestream2_get_byte(&gb);
157 type = bytestream2_get_le16(&gb);
158 count =
type & 0x3FFF;
169 pixel =
type == 3 ? bytestream2_get_byte(&gb) : -1;
170 if (
type == 1) count += 0x4000;
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
static av_always_inline void bytestream2_skipu(GetByteContext *g, unsigned int size)
static av_always_inline unsigned int bytestream2_get_bufferu(GetByteContext *g, uint8_t *dst, unsigned int size)
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
static av_cold int decode_init(AVCodecContext *avctx)
#define OP(gb, pixel, count)
static av_cold int decode_end(AVCodecContext *avctx)
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
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.
#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_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
This structure stores compressed data.
int palette[AVPALETTE_COUNT]
#define avpriv_request_sample(...)