45 #define DECOMP_BUF_PADDING 16
50 static const int shift1[6] = { 0, 8, 8, 8, 4, 4 };
51 static const int shift2[6] = { 0, 0, 8, 4, 0, 4 };
59 int type, x, y, d, d2;
70 for(j = 0; j < avctx->
height; j += 4){
71 for(
i = 0;
i < avctx->
width;
i += 4){
72 if (
data > src_end ||
mv > src_end || msk > src_end)
79 x = (*mv) >> 4;
if(x & 8) x = 8 - x;
80 y = (*
mv++) & 0xF;
if(y & 8) y = 8 - y;
81 if (i < -x || avctx->
width -
i - 4 < x ||
82 j < -y || avctx->
height - j - 4 < y) {
89 for(y = 0; y < 4; y++){
110 for(y = 0; y < 4; y++){
111 for(x = 0; x < 4; x++){
120 for(y = 0; y < 4; y++){
127 for(y = 0; y < 4; y++){
135 for(k = 0; k < 4; k++){
136 d = ((k & 1) << 1) + ((k & 2) *
stride);
137 d2 = ((k & 1) << 1) + ((k & 2) *
stride);
141 x = (*mv) >> 4;
if(x & 8) x = 8 - x;
142 y = (*
mv++) & 0xF;
if(y & 8) y = 8 - y;
143 if (
i + 2*(k & 1) < -x || avctx->
width -
i - 2*(k & 1) - 2 < x ||
144 j + (k & 2) < -y || avctx->
height - j - (k & 2) - 2 < y) {
150 tmp[d + 0 ] = tmp2[0];
151 tmp[d + 1 ] = tmp2[1];
175 for(y = 0; y < 4; y++){
176 for(x = 0; x < 4; x++){
189 for(y = 0; y < 4; y++){
190 for(x = 0; x < 4; x++){
214 uint8_t *outptr, *srcptr, *tmpptr;
216 int i, j, compr, ret;
224 if (bytestream2_peek_le32(&gb) ==
MKTAG(
'C',
'M',
'A',
'P')) {
226 for(
i = 0;
i < 256;
i++){
227 c->pal[
i] = 0xFFU << 24 | bytestream2_get_be24(&gb);
238 srcptr =
c->decomp_buf;
239 tmpptr =
c->prev->data[0];
242 if (bytestream2_get_le32(&gb) ==
MKTAG(
'N',
'U',
'L',
'L'))
245 compr = bytestream2_get_byte(&gb);
248 if (compr != 4 && compr != -1) {
265 if (
c->prev->data[0])
277 for (j = 0; j < avctx->
height; j++) {
278 memcpy(outptr, srcptr, avctx->
width);
280 srcptr += avctx->
width;
292 for (j = 0; j < avctx->
height; j++) {
295 outptr[
i] = srcptr[
i] ^ tmpptr[
i];
298 memcpy(outptr, srcptr, avctx->
width);
300 srcptr += avctx->
width;
307 if (!
c->prev->data[0]) {
345 if (!
c->decomp_buf) {
Libavcodec external API header.
#define FF_DEBUG_PICT_INFO
static av_cold int init(AVCodecContext *avctx)
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)
static av_always_inline int bytestream2_tell(GetByteContext *g)
common internal and external API header
#define MKTAG(a, b, c, d)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define AV_CODEC_FLAG2_SHOW_ALL
Show all frames before the first keyframe.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
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_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_PICTURE_TYPE_I
Intra.
@ AV_PICTURE_TYPE_P
Predicted.
static const int8_t mv[256][2]
static av_cold int decode_init(AVCodecContext *avctx)
static av_cold int decode_end(AVCodecContext *avctx)
#define DECOMP_BUF_PADDING
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static const int shift1[6]
static const int shift2[6]
static int decode_13(AVCodecContext *avctx, DxaDecContext *c, uint8_t *dst, int stride, uint8_t *src, int srcsize, uint8_t *ref)
#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.
static const uint16_t mask[17]
@ 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.
int width
picture width / height.
int flags2
AV_CODEC_FLAG2_*.
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 int ref[MAX_W *MAX_W]