33 #define TM2_ESCAPE 0x80000000
130 huff->
bits[huff->
num] = prefix;
135 if ((ret =
tm2_read_tree(ctx, prefix << 1, length + 1, huff)) < 0)
137 if ((ret =
tm2_read_tree(ctx, (prefix << 1) | 1, length + 1, huff)) < 0)
161 if ((huff.
nodes <= 0) || (huff.
nodes > 0x10000)) {
163 "nodes: %i\n", huff.
nodes);
194 huff.
lens,
sizeof(
int),
sizeof(
int),
195 huff.
bits,
sizeof(uint32_t),
sizeof(uint32_t), 0);
206 for (i = 0; i < code->
length; i++)
235 #define TM2_OLD_HEADER_MAGIC 0x00000100
236 #define TM2_NEW_HEADER_MAGIC 0x00000101
262 if ((d < 1) || (d >
TM2_DELTAS) || (mb < 1) || (mb > 32)) {
267 for (i = 0; i < d; i++) {
269 if (v & (1 << (mb - 1)))
270 ctx->
deltas[stream_id][i] = v - (1 <<
mb);
275 ctx->
deltas[stream_id][i] = 0;
295 len = bytestream2_get_be32(&gb);
301 if (len >= INT_MAX/4-1 || len < 0 || skip > buf_size) {
306 toks = bytestream2_get_be32(&gb);
308 len = bytestream2_get_be32(&gb);
310 len = bytestream2_get_be32(&gb);
323 len = bytestream2_get_be32(&gb);
340 if ((toks < 0) || (toks > 0xFFFFFF)) {
351 len = bytestream2_get_be32(&gb);
357 for (i = 0; i < toks; i++) {
363 if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >=
TM2_DELTAS || ctx->
tokens[stream_id][i]<0) {
365 ctx->
tokens[stream_id][i], stream_id, i);
370 for (i = 0; i < toks; i++) {
372 if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >=
TM2_DELTAS) {
374 ctx->
tokens[stream_id][i], stream_id, i);
403 #define TM2_INIT_POINTERS() \
406 int Ystride, Ustride, Vstride;\
408 Ystride = ctx->y_stride;\
409 Vstride = ctx->uv_stride;\
410 Ustride = ctx->uv_stride;\
411 Y = (ctx->cur?ctx->Y2:ctx->Y1) + by * 4 * Ystride + bx * 4;\
412 V = (ctx->cur?ctx->V2:ctx->V1) + by * 2 * Vstride + bx * 2;\
413 U = (ctx->cur?ctx->U2:ctx->U1) + by * 2 * Ustride + bx * 2;\
414 last = ctx->last + bx * 4;\
415 clast = ctx->clast + bx * 4;
417 #define TM2_INIT_POINTERS_2() \
419 int oYstride, oUstride, oVstride;\
421 TM2_INIT_POINTERS();\
425 Yo = (ctx->cur?ctx->Y1:ctx->Y2) + by * 4 * oYstride + bx * 4;\
426 Vo = (ctx->cur?ctx->V1:ctx->V2) + by * 2 * oVstride + bx * 2;\
427 Uo = (ctx->cur?ctx->U1:ctx->U2) + by * 2 * oUstride + bx * 2;
430 #define TM2_RECALC_BLOCK(CHR, stride, last, CD) {\
431 CD[0] = CHR[1] - last[1];\
432 CD[1] = (int)CHR[stride + 1] - (int)CHR[1];\
433 last[0] = (int)CHR[stride + 0];\
434 last[1] = (int)CHR[stride + 1];}
442 for (j = 0; j < 4; j++){
444 for (i = 0; i < 4; i++){
445 d = deltas[i + j * 4];
448 Y[i] = av_clip_uint8(last[i]);
458 for (j = 0; j < 2; j++) {
459 for (i = 0; i < 2; i++) {
460 CD[j] += deltas[i + j * 2];
478 t = (CD[0] + CD[1]) >> 1;
479 l = (prev - CD[0] - CD[1] + clast[1]) >> 1;
480 CD[1] = CD[0] + CD[1] -
t;
494 for (i = 0; i < 4; i++) {
502 for (i = 0; i < 16; i++)
516 deltas[1] = deltas[2] = deltas[3] = 0;
520 deltas[1] = deltas[2] = deltas[3] = 0;
524 for (i = 0; i < 16; i++)
539 deltas[1] = deltas[2] = deltas[3] = 0;
543 deltas[1] = deltas[2] = deltas[3] = 0;
547 for (i = 0; i < 16; i++)
556 last[0] = (last[-1] - ctx->
D[0] - ctx->
D[1] - ctx->
D[2] - ctx->
D[3] + last[1]) >> 1;
558 last[0] = (last[1] - ctx->
D[0] - ctx->
D[1] - ctx->
D[2] - ctx->
D[3])>> 1;
559 last[2] = (last[1] + last[3]) >> 1;
561 t1 = ctx->
D[0] + ctx->
D[1];
563 ctx->
D[1] = t1 - (t1 >> 1);
564 t2 = ctx->
D[2] + ctx->
D[3];
566 ctx->
D[3] = t2 - (t2 >> 1);
575 int left, right, diff;
580 deltas[0] = deltas[1] = deltas[2] = deltas[3] = 0;
583 deltas[0] = deltas[1] = deltas[2] = deltas[3] = 0;
587 for (i = 0; i < 16; i++)
590 ct = ctx->
D[0] + ctx->
D[1] + ctx->
D[2] + ctx->
D[3];
593 left = last[-1] - ct;
599 last[0] = left + (diff >> 2);
600 last[1] = left + (diff >> 1);
601 last[2] = right - (diff >> 2);
606 ctx->
D[0] = (tp + (ct >> 2)) - left;
608 ctx->
D[1] = (tp + (ct >> 1)) - left;
610 ctx->
D[2] = ((tp + ct) - (ct >> 2)) - left;
612 ctx->
D[3] = (tp + ct) - left;
623 for (j = 0; j < 2; j++) {
624 for (i = 0; i < 2; i++){
628 U += Ustride;
V += Vstride;
629 Uo += oUstride; Vo += oVstride;
637 ctx->
D[0] = Yo[3] - last[3];
638 ctx->
D[1] = Yo[3 + oYstride] - Yo[3];
639 ctx->
D[2] = Yo[3 + oYstride * 2] - Yo[3 + oYstride];
640 ctx->
D[3] = Yo[3 + oYstride * 3] - Yo[3 + oYstride * 2];
642 for (j = 0; j < 4; j++) {
643 for (i = 0; i < 4; i++) {
659 for (j = 0; j < 2; j++) {
660 for (i = 0; i < 2; i++) {
675 ctx->
D[0] = Yo[3] - last[3];
676 ctx->
D[1] = Yo[3 + oYstride] - Yo[3];
677 ctx->
D[2] = Yo[3 + oYstride * 2] - Yo[3 + oYstride];
678 ctx->
D[3] = Yo[3 + oYstride * 3] - Yo[3 + oYstride * 2];
680 for (j = 0; j < 4; j++) {
682 for (i = 0; i < 4; i++) {
686 ctx->
D[j] = last[3] - d;
700 mx = av_clip(mx, -(bx * 4 + 4), ctx->
avctx->
width - bx * 4);
701 my = av_clip(my, -(by * 4 + 4), ctx->
avctx->
height - by * 4);
708 Yo += my * oYstride + mx;
709 Uo += (my >> 1) * oUstride + (mx >> 1);
710 Vo += (my >> 1) * oVstride + (mx >> 1);
713 for (j = 0; j < 2; j++) {
714 for (i = 0; i < 2; i++) {
729 for (j = 0; j < 4; j++) {
730 for (i = 0; i < 4; i++) {
738 ctx->
D[0] =
Y[3] - last[3];
739 ctx->
D[1] =
Y[3 + Ystride] -
Y[3];
740 ctx->
D[2] = Y[3 + Ystride * 2] - Y[3 + Ystride];
741 ctx->
D[3] = Y[3 + Ystride * 3] - Y[3 + Ystride * 2];
742 for (i = 0; i < 4; i++)
743 last[i] = Y[i + Ystride * 3];
763 memset(ctx->
last, 0, 4 * bw *
sizeof(
int));
764 memset(ctx->
clast, 0, 4 * bw *
sizeof(
int));
766 for (j = 0; j < bh; j++) {
767 memset(ctx->
D, 0, 4 *
sizeof(
int));
768 memset(ctx->
CD, 0, 4 *
sizeof(
int));
769 for (i = 0; i < bw; i++) {
803 Y = (ctx->
cur?ctx->
Y2:ctx->
Y1);
804 U = (ctx->
cur?ctx->
U2:ctx->
U1);
805 V = (ctx->
cur?ctx->
V2:ctx->
V1);
807 for (j = 0; j < h; j++) {
808 for (i = 0; i < w; i++) {
809 int y = Y[i],
u = U[i >> 1],
v = V[i >> 1];
810 dst[3*i+0] = av_clip_uint8(y + v);
811 dst[3*i+1] = av_clip_uint8(y);
812 dst[3*i+2] = av_clip_uint8(y + u);
816 Y[-4] = Y[-3] = Y[-2] = Y[-1] = Y[0];
817 Y[w + 3] = Y[w + 2] = Y[w + 1] = Y[w] = Y[w - 1];
825 }
else if (j == h - 1) {
835 U[-2] = U[-1] = U[0];
836 V[-2] = V[-1] = V[0];
837 U[cw + 1] = U[cw] = U[cw - 1];
838 V[cw + 1] = V[cw] = V[cw - 1];
846 }
else if (j == h - 1) {
866 #define TM2_HEADER_SIZE 40
869 void *
data,
int *got_frame,
874 int buf_size = avpkt->
size & ~3;
895 if (offset >= buf_size) {
919 return (ret < 0) ? ret : buf_size;
1011 .
name =
"truemotion2",
static void tm2_low_chroma(int *data, int stride, int *clast, int *CD, int *deltas, int bx)
const char const char void * val
av_cold void ff_dsputil_init(DSPContext *c, AVCodecContext *avctx)
void * av_calloc(size_t nmemb, size_t size) av_malloc_attrib
Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vec...
This structure describes decoded (raw) audio or video data.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static av_cold int init(AVCodecContext *avctx)
int * recode
table for converting from code indexes to values
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
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)
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional FF_INPUT_BUFFER_PADDING_SIZE at the end w...
AVCodec ff_truemotion2_decoder
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
if((e=av_dict_get(options,"", NULL, AV_DICT_IGNORE_SUFFIX)))
packed RGB 8:8:8, 24bpp, BGRBGR...
int num
current number filled
static int tm2_read_header(TM2Context *ctx, const uint8_t *buf)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
structure for gathering Huffman codes information
static const uint8_t offset[511][2]
static const int tm2_stream_order[TM2_NUM_STREAMS]
int max_bits
maximum length of code
const char * name
Name of the codec implementation.
int av_frame_ref(AVFrame *dst, AVFrame *src)
Setup a new reference to the data described by a given frame.
static int tm2_read_deltas(TM2Context *ctx, int stream_id)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
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 FFmpeg 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)
static void tm2_update_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
static int get_bits_left(GetBitContext *gb)
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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
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. ...
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.
static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p)
int * tokens[TM2_NUM_STREAMS]
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Libavcodec external API header.
int max_num
total number of codes
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
enum AVPictureType pict_type
Picture type of the frame.
static int GET_TOK(TM2Context *ctx, int type)
int width
picture width / height.
#define TM2_OLD_HEADER_MAGIC
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
static av_cold int decode_end(AVCodecContext *avctx)
static av_always_inline int bytestream2_tell(GetByteContext *g)
#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 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)
#define TM2_INIT_POINTERS()
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)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
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)
static void * av_malloc_array(size_t nmemb, size_t size)
common internal api header.
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)
#define TM2_NEW_HEADER_MAGIC
#define AVERROR_INVALIDDATA
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)
Huffman codes for each of streams.
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int tok_ptrs[TM2_NUM_STREAMS]
This structure stores compressed data.
void ff_free_vlc(VLC *vlc)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)