32 #define TM2_ESCAPE 0x80000000
107 huff->
bits[huff->
num] = prefix;
108 huff->
lens[huff->
num] = length;
114 if(
tm2_read_tree(ctx, (prefix << 1) | 1, length + 1, huff) == -1)
138 if((huff.
nodes <= 0) || (huff.
nodes > 0x10000)) {
166 huff.
lens,
sizeof(
int),
sizeof(
int),
167 huff.
bits,
sizeof(uint32_t),
sizeof(uint32_t), 0);
177 for(i = 0; i < code->
length; i++)
213 if(magic == 0x00000100) {
216 }
else if(magic == 0x00000101) {
233 if((d < 1) || (d >
TM2_DELTAS) || (mb < 1) || (mb > 32)) {
238 for(i = 0; i < d; i++) {
240 if(v & (1 << (mb - 1)))
241 ctx->
deltas[stream_id][i] = v - (1 << mb);
246 ctx->
deltas[stream_id][i] = 0;
261 len = bytestream2_get_be32(&gb);
267 if (len >= INT_MAX/4-1 || len < 0 || len > buf_size) {
272 toks = bytestream2_get_be32(&gb);
274 len = bytestream2_get_be32(&gb);
276 len = bytestream2_get_be32(&gb);
289 len = bytestream2_get_be32(&gb);
306 if((toks < 0) || (toks > 0xFFFFFF)){
313 len = bytestream2_get_be32(&gb);
319 for(i = 0; i < toks; i++) {
325 if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >=
TM2_DELTAS) {
327 ctx->
tokens[stream_id][i], stream_id, i);
332 for(i = 0; i < toks; i++) {
334 if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >=
TM2_DELTAS) {
336 ctx->
tokens[stream_id][i], stream_id, i);
359 #define TM2_INIT_POINTERS() \
362 int Ystride, Ustride, Vstride;\
364 Ystride = ctx->y_stride;\
365 Vstride = ctx->uv_stride;\
366 Ustride = ctx->uv_stride;\
367 Y = (ctx->cur?ctx->Y2:ctx->Y1) + by * 4 * Ystride + bx * 4;\
368 V = (ctx->cur?ctx->V2:ctx->V1) + by * 2 * Vstride + bx * 2;\
369 U = (ctx->cur?ctx->U2:ctx->U1) + by * 2 * Ustride + bx * 2;\
370 last = ctx->last + bx * 4;\
371 clast = ctx->clast + bx * 4;
373 #define TM2_INIT_POINTERS_2() \
375 int oYstride, oUstride, oVstride;\
377 TM2_INIT_POINTERS();\
381 Yo = (ctx->cur?ctx->Y1:ctx->Y2) + by * 4 * oYstride + bx * 4;\
382 Vo = (ctx->cur?ctx->V1:ctx->V2) + by * 2 * oVstride + bx * 2;\
383 Uo = (ctx->cur?ctx->U1:ctx->U2) + by * 2 * oUstride + bx * 2;
386 #define TM2_RECALC_BLOCK(CHR, stride, last, CD) {\
387 CD[0] = CHR[1] - last[1];\
388 CD[1] = (int)CHR[stride + 1] - (int)CHR[1];\
389 last[0] = (int)CHR[stride + 0];\
390 last[1] = (int)CHR[stride + 1];}
398 for(j = 0; j < 4; j++){
400 for(i = 0; i < 4; i++){
401 d = deltas[i + j * 4];
404 Y[i] = av_clip_uint8(last[i]);
414 for(j = 0; j < 2; j++){
415 for(i = 0; i < 2; i++){
416 CD[j] += deltas[i + j * 2];
434 t = (CD[0] + CD[1]) >> 1;
435 l = (prev - CD[0] - CD[1] + clast[1]) >> 1;
436 CD[1] = CD[0] + CD[1] -
t;
450 for(i = 0; i < 4; i++) {
458 for(i = 0; i < 16; i++)
472 deltas[1] = deltas[2] = deltas[3] = 0;
476 deltas[1] = deltas[2] = deltas[3] = 0;
480 for(i = 0; i < 16; i++)
495 deltas[1] = deltas[2] = deltas[3] = 0;
499 deltas[1] = deltas[2] = deltas[3] = 0;
503 for(i = 0; i < 16; i++)
512 last[0] = (last[-1] - ctx->
D[0] - ctx->
D[1] - ctx->
D[2] - ctx->
D[3] + last[1]) >> 1;
514 last[0] = (last[1] - ctx->
D[0] - ctx->
D[1] - ctx->
D[2] - ctx->
D[3])>> 1;
515 last[2] = (last[1] + last[3]) >> 1;
517 t1 = ctx->
D[0] + ctx->
D[1];
519 ctx->
D[1] = t1 - (t1 >> 1);
520 t2 = ctx->
D[2] + ctx->
D[3];
522 ctx->
D[3] = t2 - (t2 >> 1);
531 int left, right, diff;
536 deltas[0] = deltas[1] = deltas[2] = deltas[3] = 0;
539 deltas[0] = deltas[1] = deltas[2] = deltas[3] = 0;
543 for(i = 0; i < 16; i++)
546 ct = ctx->
D[0] + ctx->
D[1] + ctx->
D[2] + ctx->
D[3];
549 left = last[-1] - ct;
555 last[0] = left + (diff >> 2);
556 last[1] = left + (diff >> 1);
557 last[2] = right - (diff >> 2);
562 ctx->
D[0] = (tp + (ct >> 2)) - left;
564 ctx->
D[1] = (tp + (ct >> 1)) - left;
566 ctx->
D[2] = ((tp + ct) - (ct >> 2)) - left;
568 ctx->
D[3] = (tp + ct) - left;
579 for(j = 0; j < 2; j++){
580 for(i = 0; i < 2; i++){
584 U += Ustride;
V += Vstride;
585 Uo += oUstride; Vo += oVstride;
593 ctx->
D[0] = Yo[3] - last[3];
594 ctx->
D[1] = Yo[3 + oYstride] - Yo[3];
595 ctx->
D[2] = Yo[3 + oYstride * 2] - Yo[3 + oYstride];
596 ctx->
D[3] = Yo[3 + oYstride * 3] - Yo[3 + oYstride * 2];
598 for(j = 0; j < 4; j++){
599 for(i = 0; i < 4; i++){
615 for(j = 0; j < 2; j++){
616 for(i = 0; i < 2; i++){
620 U += Ustride;
V += Vstride;
621 Uo += oUstride; Vo += oVstride;
629 ctx->
D[0] = Yo[3] - last[3];
630 ctx->
D[1] = Yo[3 + oYstride] - Yo[3];
631 ctx->
D[2] = Yo[3 + oYstride * 2] - Yo[3 + oYstride];
632 ctx->
D[3] = Yo[3 + oYstride * 3] - Yo[3 + oYstride * 2];
634 for(j = 0; j < 4; j++){
636 for(i = 0; i < 4; i++){
640 ctx->
D[j] = last[3] - d;
654 mx = av_clip(mx, -(bx * 4 + 4), ctx->
avctx->
width - bx * 4);
655 my = av_clip(my, -(by * 4 + 4), ctx->
avctx->
height - by * 4);
657 Yo += my * oYstride + mx;
658 Uo += (my >> 1) * oUstride + (mx >> 1);
659 Vo += (my >> 1) * oVstride + (mx >> 1);
662 for(j = 0; j < 2; j++){
663 for(i = 0; i < 2; i++){
667 U += Ustride;
V += Vstride;
668 Uo += oUstride; Vo += oVstride;
676 for(j = 0; j < 4; j++){
677 for(i = 0; i < 4; i++){
685 ctx->
D[0] =
Y[3] - last[3];
686 ctx->
D[1] =
Y[3 + Ystride] -
Y[3];
687 ctx->
D[2] = Y[3 + Ystride * 2] - Y[3 + Ystride];
688 ctx->
D[3] = Y[3 + Ystride * 3] - Y[3 + Ystride * 2];
689 for(i = 0; i < 4; i++)
690 last[i] = Y[i + Ystride * 3];
710 memset(ctx->
last, 0, 4 * bw *
sizeof(
int));
711 memset(ctx->
clast, 0, 4 * bw *
sizeof(
int));
713 for(j = 0; j < bh; j++) {
714 memset(ctx->
D, 0, 4 *
sizeof(
int));
715 memset(ctx->
CD, 0, 4 *
sizeof(
int));
716 for(i = 0; i < bw; i++) {
750 Y = (ctx->
cur?ctx->
Y2:ctx->
Y1);
751 U = (ctx->
cur?ctx->
U2:ctx->
U1);
752 V = (ctx->
cur?ctx->
V2:ctx->
V1);
754 for(j = 0; j < h; j++){
755 for(i = 0; i < w; i++){
756 int y = Y[i], u = U[i >> 1],
v = V[i >> 1];
757 dst[3*i+0] = av_clip_uint8(y + v);
758 dst[3*i+1] = av_clip_uint8(y);
759 dst[3*i+2] = av_clip_uint8(y + u);
763 Y[-4] = Y[-3] = Y[-2] = Y[-1] = Y[0];
764 Y[w + 3] = Y[w + 2] = Y[w + 1] = Y[w] = Y[w - 1];
772 }
else if (j == h - 1) {
782 U[-2] = U[-1] = U[0];
783 V[-2] = V[-1] = V[0];
784 U[cw + 1] = U[cw] = U[cw - 1];
785 V[cw + 1] = V[cw] = V[cw - 1];
793 }
else if (j == h - 1) {
814 void *
data,
int *data_size,
817 const uint8_t *buf = avpkt->
data;
818 int buf_size = avpkt->
size & ~3;
837 l->
dsp.
bswap_buf((uint32_t*)swbuf, (
const uint32_t*)buf, buf_size >> 2);
846 if (skip >= buf_size) {
955 .
name =
"truemotion2",
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static void tm2_low_chroma(int *data, int stride, int *clast, int *CD, int *deltas, int bx)
enum PixelFormat pix_fmt
Pixel format, see PIX_FMT_xxx.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
struct TM2Huff TM2Huff
structure for gathering Huffman codes information
#define FF_BUFFER_HINTS_VALID
int buffer_hints
codec suggestion on buffer type if != 0
void(* release_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called to release buffers which were allocated with get_buffer.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
int * recode
table for converting from code indexes to values
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
void * av_realloc(void *ptr, size_t size)
Allocate or reallocate a block of memory.
AVCodec ff_truemotion2_decoder
int(* reget_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called at the beginning of a frame to get cr buffer for it.
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
int num
current number filled
static int tm2_read_header(TM2Context *ctx, const uint8_t *buf)
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
structure for gathering Huffman codes information
static const int tm2_stream_order[TM2_NUM_STREAMS]
int max_bits
maximum length of code
static int tm2_read_deltas(TM2Context *ctx, int stream_id)
static void tm2_free_codes(TM2Codes *code)
int min_bits
minimum length of code
static int get_bits_count(const GetBitContext *s)
static int tm2_read_tree(TM2Context *ctx, uint32_t prefix, int length, TM2Huff *huff)
VLC vlc
table for Libav bitstream reader
bitstream reader API header.
static void tm2_hi_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
static int tm2_read_stream(TM2Context *ctx, const uint8_t *buf, int stream_id, int buf_size)
av_cold void dsputil_init(DSPContext *c, AVCodecContext *avctx)
static int init(AVCodecParserContext *s)
static void tm2_update_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static int get_bits_left(GetBitContext *gb)
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
int val_bits
length of literal
int reference
is this picture used as reference The values for this are the same as the MpegEncContext.picture_structure variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
static void tm2_low_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p)
int * tokens[TM2_NUM_STREAMS]
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
struct TM2Codes TM2Codes
Huffman codes for each of streams.
int max_num
total number of codes
enum AVPictureType pict_type
Picture type of the frame, see ?_TYPE below.
static int GET_TOK(TM2Context *ctx, int type)
int width
picture width / height.
struct AVFrame AVFrame
Audio Video Frame.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
static int tm2_get_token(GetBitContext *gb, TM2Codes *code)
int nodes
total number of nodes in tree
#define FF_BUFFER_HINTS_REUSABLE
static av_cold int decode_end(AVCodecContext *avctx)
static av_always_inline int bytestream2_tell(GetByteContext *g)
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
int linesize[AV_NUM_DATA_POINTERS]
Size, in bytes, of the data for each picture/channel plane.
#define TM2_INIT_POINTERS_2()
main external API structure.
static void close(AVCodecParserContext *s)
static void tm2_still_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
static unsigned int get_bits1(GetBitContext *s)
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define TM2_INIT_POINTERS()
#define FF_BUFFER_HINTS_PRESERVE
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static void tm2_med_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
static void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
packed RGB 8:8:8, 24bpp, BGRBGR...
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
static void tm2_apply_deltas(TM2Context *ctx, int *Y, int stride, int *deltas, int *last)
#define TM2_RECALC_BLOCK(CHR, stride, last, CD)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static void tm2_null_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
int deltas[TM2_NUM_STREAMS][TM2_DELTAS]
static av_cold int decode_init(AVCodecContext *avctx)
VLC_TYPE(* table)[2]
code, bits
int tok_lens[TM2_NUM_STREAMS]
int key_frame
1 -> keyframe, 0-> not
static void tm2_high_chroma(int *data, int stride, int *last, int *CD, int *deltas)
struct TM2Context TM2Context
Huffman codes for each of streams.
int tok_ptrs[TM2_NUM_STREAMS]
void ff_free_vlc(VLC *vlc)