46 #define C93_HAS_PALETTE 0x01
47 #define C93_FIRST_FRAME 0x02
66 if (!
s->pictures[0] || !
s->pictures[1])
110 for (y = 0; y <
height; y++) {
112 cols[0] = grps[3 * (y >> 1)];
113 for (x = 0; x <
width; x++) {
115 cols[1]= grps[(x >> 1) + 1];
116 out[x + y*
stride] = cols[col & ((1 << bpp) - 1)];
126 int buf_size = avpkt->
size;
132 int stride, ret,
i, x, y,
b, bt = 0;
145 b = bytestream2_get_byte(&gb);
154 for (y = 0; y <
HEIGHT; y += 8) {
156 for (x = 0; x <
WIDTH; x += 8) {
163 bt = bytestream2_get_byte(&gb);
165 block_type= bt & 0x0F;
166 switch (block_type) {
168 offset = bytestream2_get_le16(&gb);
176 for (j = 0; j < 8; j += 4) {
177 for (
i = 0;
i < 8;
i += 4) {
178 int offset = bytestream2_get_le16(&gb);
195 for (
i = 0;
i < 8;
i++) {
197 NULL, bytestream2_get_byte(&gb));
205 for (j = 0; j < 8; j += 4) {
206 for (
i = 0;
i < 8;
i += 4) {
210 1, cols,
NULL, bytestream2_get_le16(&gb));
214 2, cols,
NULL, bytestream2_get_le32(&gb));
218 1, cols, grps, bytestream2_get_le16(&gb));
228 for (j = 0; j < 8; j++)
243 uint32_t *palette = (uint32_t *) newpic->
data[1];
244 for (
i = 0;
i < 256;
i++) {
245 palette[
i] = 0xFFU << 24 | bytestream2_get_be24(&gb);
250 memcpy(newpic->
data[1], oldpic->
data[1], 256 * 4);
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
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.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#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_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_PICTURE_TYPE_I
Intra.
@ AV_PICTURE_TYPE_P
Predicted.
static int copy_from(IpvideoContext *s, AVFrame *src, AVFrame *dst, int delta_x, int delta_y)
static int copy_block(AVCodecContext *avctx, uint8_t *to, uint8_t *from, int offset, int height, int stride)
static av_cold int decode_init(AVCodecContext *avctx)
static av_cold int decode_end(AVCodecContext *avctx)
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static void draw_n_color(uint8_t *out, int stride, int width, int height, int bpp, uint8_t cols[4], uint8_t grps[4], uint32_t col)
#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...
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.
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_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
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.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
enum AVPictureType pict_type
Picture type of the frame.
This structure stores compressed data.
#define avpriv_request_sample(...)
static const uint8_t offset[127][2]