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;
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);
149 if (
OP(type ?
NULL : &gb, -1, count))
break;
152 count = bytestream2_get_byte(&gb);
153 pixel = bytestream2_get_byte(&gb);
154 if (
OP(
NULL, pixel, count))
break;
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;
171 if (
OP(type == 2 ? &gb :
NULL, pixel, count))
break;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
static av_cold int init(AVCodecContext *avctx)
#define avpriv_request_sample(...)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static av_always_inline unsigned int bytestream2_get_bufferu(GetByteContext *g, uint8_t *dst, unsigned int size)
#define OP(gb, pixel, count)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bits with AV_PIX_FMT_RGB32 palette
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
static av_always_inline void bytestream2_skipu(GetByteContext *g, unsigned int size)
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
#define i(width, name, range_min, range_max)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
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...
const char * name
Name of the codec implementation.
static av_cold int decode_init(AVCodecContext *avctx)
int palette[AVPALETTE_COUNT]
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
main external API structure.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
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.
common internal api header.
static av_cold int decode_end(AVCodecContext *avctx)
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.