47 unsigned x = 0, y = 0;
52 unsigned run = bytestream2_get_byte(gb);
57 fill = bytestream2_get_byte(gb);
60 fill = bytestream2_get_le16(gb);
63 fill = bytestream2_get_le24(gb);
66 fill = bytestream2_get_le32(gb);
70 for (j = 0; j <
run; j++) {
73 bytestream2_put_byte(pb, fill);
76 bytestream2_put_le16(pb, fill);
79 bytestream2_put_le24(pb, fill);
82 bytestream2_put_le32(pb, fill);
88 unsigned copy = bytestream2_get_byte(gb);
94 }
else if (copy == 1) {
96 }
else if (copy == 2) {
98 x += bytestream2_get_byte(gb);
99 y += bytestream2_get_byte(gb);
103 for (j = 0; j <
copy; j++) {
106 bytestream2_put_byte(pb, bytestream2_get_byte(gb));
109 bytestream2_put_le16(pb, bytestream2_get_le16(gb));
112 bytestream2_put_le24(pb, bytestream2_get_le24(gb));
115 bytestream2_put_le32(pb, bytestream2_get_le32(gb));
120 if (s->
bpp == 1 && (copy & 1))
131 void *
data,
int *got_frame,
137 int buf_size = avpkt->
size;
160 for (j = 0; j < 256; j++)
161 s->
pal[j] = 0xFF000000 |
AV_RL32(pal + j * 4);
168 ret = inflateReset(&s->
zstream);
174 s->
zstream.avail_in = buf_size;
178 if (ret != Z_STREAM_END) {
190 for (j = 0; j < avctx->
height; j++) {
232 zret = inflateInit(&s->
zstream);
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static void copy(const float *p1, float *p2, const int length)
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static av_cold int init(AVCodecContext *avctx)
static av_always_inline void bytestream2_init_writer(PutByteContext *p, uint8_t *buf, int buf_size)
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)
8 bits with AV_PIX_FMT_RGB32 palette
static int rle_uncompress(AVCodecContext *avctx, GetByteContext *gb, PutByteContext *pb)
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette...
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
static av_cold int decode_init(AVCodecContext *avctx)
const char * name
Name of the codec implementation.
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
packed RGB 8:8:8, 24bpp, BGRBGR...
static av_always_inline int bytestream2_seek_p(PutByteContext *p, int offset, int whence)
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static void inflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord, int maxc)
int palette_has_changed
Tell user application that palette has changed from previous frame.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
#define AV_PIX_FMT_RGB555
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
int key_frame
1 -> keyframe, 0-> not
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static av_cold int decode_close(AVCodecContext *avctx)