47 int len,
int pixelstride)
49 unsigned char pixel, count;
50 unsigned char *orig = out_buf;
55 pixel = bytestream2_get_byteu(&s->
g);
56 if (!(count = (pixel & 0x7f))) {
57 return (out_buf - orig) / pixelstride;
61 if (pixelstride * (count - 1) >= len) {
68 *out_buf = bytestream2_get_byte(&s->
g);
69 out_buf += pixelstride;
72 pixel = bytestream2_get_byte(&s->
g);
76 out_buf += pixelstride;
94 unsigned int start_offset;
101 for (z = 0; z < s->
depth; z++) {
103 for (y = 0; y < s->
height; y++) {
105 start_offset = bytestream2_get_be32(&g_table);
135 for (z = 0; z < s->
depth; z++) {
140 for (y = s->
height - 1; y >= 0; y--) {
141 out_end = out_buf + (y * s->
linesize);
143 for (x = s->
width; x > 0; x--)
144 for (z = 0; z < s->
depth; z++)
145 *out_end++ = bytestream2_get_byteu(&gp[z]);
147 uint16_t *out16 = (uint16_t *)out_end;
148 for (x = s->
width; x > 0; x--)
149 for (z = 0; z < s->
depth; z++)
157 void *
data,
int *got_frame,
162 unsigned int dimension, rle;
173 if (bytestream2_get_be16(&s->
g) !=
SGI_MAGIC) {
178 rle = bytestream2_get_byte(&s->
g);
180 dimension = bytestream2_get_be16(&s->
g);
181 s->
width = bytestream2_get_be16(&s->
g);
182 s->
height = bytestream2_get_be16(&s->
g);
183 s->
depth = bytestream2_get_be16(&s->
g);
191 if (dimension != 2 && dimension != 3) {
218 out_buf = p->
data[0];
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
packed RGB 8:8:8, 24bpp, RGBRGB...
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
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 int read_rle_sgi(uint8_t *out_buf, SgiState *s)
Read a run length encoded SGI image.
unsigned int bytes_per_channel
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int read_uncompressed_sgi(unsigned char *out_buf, uint8_t *out_end, SgiState *s)
Read an uncompressed SGI image.
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
#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)
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
enum AVPictureType pict_type
Picture type of the frame.
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
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 av_cold int sgi_decode_init(AVCodecContext *avctx)
static int expand_rle_row(SgiState *s, uint8_t *out_buf, int len, int pixelstride)
Expand an RLE row into a channel.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
#define SGI_MAGIC
SGI image file signature.
#define bytestream2_get_ne16u
common internal api header.
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big...
static av_cold int init(AVCodecParserContext *s)
int key_frame
1 -> keyframe, 0-> not
static av_always_inline int bytestream2_seek(GetByteContext *g, int offset, int whence)
This structure stores compressed data.