92 ctx->component_size = 4;
95 ctx->component_size = 3;
99 ctx->component_size = 4;
123 ctx->component_size = 4;
132 if (!
ctx->inflated_buf)
158 int tiles_nb, packed_size, pixel_size = 0;
170 tiles_nb = bytestream2_get_le16(gbc);
178 tiles_nb *
sizeof(*
ctx->tiles));
190 uLongf packed_tiles_size;
193 packed_tiles_size = bytestream2_get_byte(gbc);
195 packed_tiles_size = bytestream2_get_le16(gbc);
197 ff_dlog(avctx,
"packed tiles of size %lu.\n", packed_tiles_size);
200 if (packed_tiles_size != tiles_nb *
TILE_SIZE) {
209 if (!inflated_tiles) {
214 ret = uncompress(inflated_tiles, &length,
215 gbc->
buffer, packed_tiles_size);
231 for (
i = 0;
i < tiles_nb;
i++) {
232 ctx->tiles[
i].x = bytestream2_get_le16(gbc);
233 ctx->tiles[
i].w = bytestream2_get_le16(gbc);
234 ctx->tiles[
i].y = bytestream2_get_le16(gbc);
235 ctx->tiles[
i].h = bytestream2_get_le16(gbc);
237 if (pixel_size +
ctx->tiles[
i].w * (
int64_t)
ctx->tiles[
i].h *
ctx->component_size > INT_MAX) {
243 pixel_size +=
ctx->tiles[
i].w *
ctx->tiles[
i].h *
ctx->component_size;
245 ff_dlog(avctx,
"tile %d orig(%d,%d) %dx%d.\n",
i,
249 if (
ctx->tiles[
i].w == 0 ||
ctx->tiles[
i].h == 0) {
251 "invalid tile %d at (%d.%d) with size %dx%d.\n",
i,
256 }
else if (
ctx->tiles[
i].x +
ctx->tiles[
i].w > avctx->
width ||
259 "out of bounds tile %d at (%d.%d) with size %dx%d.\n",
i,
271 if (pixel_size < 0x100)
272 packed_size = bytestream2_get_byte(gbc);
273 else if (pixel_size < 0x10000)
274 packed_size = bytestream2_get_le16(gbc);
275 else if (pixel_size < 0x1000000)
276 packed_size = bytestream2_get_le24(gbc);
278 packed_size = bytestream2_get_le32(gbc);
280 ff_dlog(avctx,
"pixel_size %d packed_size %d.\n", pixel_size, packed_size);
282 if (packed_size < 0) {
289 if (pixel_size == packed_size) {
297 uLongf
len =
ctx->inflated_size;
303 if (
ctx->inflated_size < pixel_size) {
307 ret = uncompress(
ctx->inflated_buf, &
len, gbc->
buffer, packed_size);
313 pixels =
ctx->inflated_buf;
323 for (
i = 0;
i < tiles_nb;
i++) {
324 uint8_t *dst =
ctx->reference->data[0] +
ctx->reference->linesize[0] *
326 ctx->tiles[
i].x *
ctx->component_size;
328 raw,
ctx->tiles[
i].w *
ctx->component_size,
329 ctx->tiles[
i].w *
ctx->component_size,
331 raw +=
ctx->tiles[
i].w *
ctx->component_size *
ctx->tiles[
i].h;
340 if (pixel_size ==
ctx->inflated_size) {
356 }
else if (palette) {
362 if (
ctx->valid_pixels <
ctx->inflated_size)
363 ctx->valid_pixels += pixel_size;
Libavcodec external API header.
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t *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)
#define MKTAG(a, b, c, d)
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.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
@ AV_PKT_DATA_PALETTE
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
#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.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
@ AV_PICTURE_TYPE_I
Intra.
@ AV_PICTURE_TYPE_P
Predicted.
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
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_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
@ AV_PIX_FMT_RGB555LE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
static av_cold int rscc_close(AVCodecContext *avctx)
static av_cold int rscc_init(AVCodecContext *avctx)
static int rscc_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
int discard_damaged_percentage
The percentage of damaged samples to discard a frame.
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.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int key_frame
1 -> keyframe, 0-> not
int palette_has_changed
Tell user application that palette has changed from previous frame.
enum AVPictureType pict_type
Picture type of the frame.
This structure stores compressed data.
uint8_t palette[AVPALETTE_SIZE]