54 for (i = 0; i < 256; i++)
55 s->
palette[i] = bytestream2_get_le32u(&s->
gb);
79 int *x,
int width,
int linesize)
81 int remaining = width - *x;
83 int striplen =
FFMIN(count, remaining);
88 }
else if (pixel >= 0)
89 memset(*dst, pixel, striplen);
91 remaining -= striplen;
94 *dst += linesize -
width;
98 if (*dst >= dst_end)
goto exhausted;
100 if (*dst <= dst_end)
goto exhausted;
103 *x = width - remaining;
107 *x = width - remaining;
112 void *
data,
int *got_frame,
116 const int buf_size = avpkt->
size;
129 if (bytestream2_get_byte(&s->
gb) != 0x42) {
133 if (bytestream2_get_byte(&s->
gb)) {
142 #define OP(gb, pixel, count) \
143 op(&dst, dst_end, (gb), (pixel), (count), &s->x, avctx->width, s->frame->linesize[0])
145 int type = bytestream2_get_byte(&s->
gb);
149 if (
OP(type ?
NULL : &s->
gb, -1, count))
break;
152 count = bytestream2_get_byte(&s->
gb);
153 pixel = bytestream2_get_byte(&s->
gb);
154 if (
OP(
NULL, pixel, count))
break;
157 type = bytestream2_get_le16(&s->
gb);
158 count = type & 0x3FFF;
169 pixel = type == 3 ? bytestream2_get_byte(&s->
gb) : -1;
170 if (type == 1) count += 0x4000;
171 if (
OP(type == 2 ? &s->
gb :
NULL, pixel, count))
break;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
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 av_always_inline unsigned int bytestream2_get_bufferu(GetByteContext *g, uint8_t *dst, unsigned int size)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define OP(gb, pixel, count)
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
const char * name
Name of the codec implementation.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static av_always_inline void bytestream2_skipu(GetByteContext *g, unsigned int size)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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. ...
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Libavcodec external API header.
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
static av_cold int decode_init(AVCodecContext *avctx)
int palette[AVPALETTE_COUNT]
8 bit with PIX_FMT_RGB32 palette
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
main external API structure.
static void close(AVCodecParserContext *s)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
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.
int x
x coordinate position
static av_cold int init(AVCodecParserContext *s)
static av_cold int decode_end(AVCodecContext *avctx)
This structure stores compressed data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.