mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-16 12:24:52 +00:00
429914a330
Originally committed as revision 6400 to svn://svn.ffmpeg.org/ffmpeg/trunk
892 lines
25 KiB
C
892 lines
25 KiB
C
/*
|
|
* Duck/ON2 TrueMotion 2 Decoder
|
|
* Copyright (c) 2005 Konstantin Shishkov
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* @file truemotion2.c
|
|
* Duck TrueMotion2 decoder.
|
|
*/
|
|
|
|
#include "avcodec.h"
|
|
#include "common.h"
|
|
#include "bitstream.h"
|
|
#include "dsputil.h"
|
|
|
|
#define TM2_ESCAPE 0x80000000
|
|
#define TM2_DELTAS 64
|
|
/* Huffman-coded streams of different types of blocks */
|
|
enum TM2_STREAMS{ TM2_C_HI = 0, TM2_C_LO, TM2_L_HI, TM2_L_LO,
|
|
TM2_UPD, TM2_MOT, TM2_TYPE, TM2_NUM_STREAMS};
|
|
/* Block types */
|
|
enum TM2_BLOCKS{ TM2_HI_RES = 0, TM2_MED_RES, TM2_LOW_RES, TM2_NULL_RES,
|
|
TM2_UPDATE, TM2_STILL, TM2_MOTION};
|
|
|
|
typedef struct TM2Context{
|
|
AVCodecContext *avctx;
|
|
AVFrame pic;
|
|
|
|
GetBitContext gb;
|
|
DSPContext dsp;
|
|
|
|
/* TM2 streams */
|
|
int *tokens[TM2_NUM_STREAMS];
|
|
int tok_lens[TM2_NUM_STREAMS];
|
|
int tok_ptrs[TM2_NUM_STREAMS];
|
|
int deltas[TM2_NUM_STREAMS][TM2_DELTAS];
|
|
/* for blocks decoding */
|
|
int D[4];
|
|
int CD[4];
|
|
int *last;
|
|
int *clast;
|
|
|
|
/* data for current and previous frame */
|
|
int *Y1, *U1, *V1, *Y2, *U2, *V2;
|
|
int cur;
|
|
} TM2Context;
|
|
|
|
/**
|
|
* Huffman codes for each of streams
|
|
*/
|
|
typedef struct TM2Codes{
|
|
VLC vlc; ///< table for FFmpeg bitstream reader
|
|
int bits;
|
|
int *recode; ///< table for converting from code indexes to values
|
|
int length;
|
|
} TM2Codes;
|
|
|
|
/**
|
|
* structure for gathering Huffman codes information
|
|
*/
|
|
typedef struct TM2Huff{
|
|
int val_bits; ///< length of literal
|
|
int max_bits; ///< maximum length of code
|
|
int min_bits; ///< minimum length of code
|
|
int nodes; ///< total number of nodes in tree
|
|
int num; ///< current number filled
|
|
int max_num; ///< total number of codes
|
|
int *nums; ///< literals
|
|
uint32_t *bits; ///< codes
|
|
int *lens; ///< codelengths
|
|
} TM2Huff;
|
|
|
|
static int tm2_read_tree(TM2Context *ctx, uint32_t prefix, int length, TM2Huff *huff)
|
|
{
|
|
if(length > huff->max_bits) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Tree exceeded its given depth (%i)\n", huff->max_bits);
|
|
return -1;
|
|
}
|
|
|
|
if(!get_bits1(&ctx->gb)) { /* literal */
|
|
if (length == 0) {
|
|
length = 1;
|
|
}
|
|
if(huff->num >= huff->max_num) {
|
|
av_log(ctx->avctx, AV_LOG_DEBUG, "Too many literals\n");
|
|
return -1;
|
|
}
|
|
huff->nums[huff->num] = get_bits_long(&ctx->gb, huff->val_bits);
|
|
huff->bits[huff->num] = prefix;
|
|
huff->lens[huff->num] = length;
|
|
huff->num++;
|
|
return 0;
|
|
} else { /* non-terminal node */
|
|
if(tm2_read_tree(ctx, prefix << 1, length + 1, huff) == -1)
|
|
return -1;
|
|
if(tm2_read_tree(ctx, (prefix << 1) | 1, length + 1, huff) == -1)
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code)
|
|
{
|
|
TM2Huff huff;
|
|
int res = 0;
|
|
|
|
huff.val_bits = get_bits(&ctx->gb, 5);
|
|
huff.max_bits = get_bits(&ctx->gb, 5);
|
|
huff.min_bits = get_bits(&ctx->gb, 5);
|
|
huff.nodes = get_bits_long(&ctx->gb, 17);
|
|
huff.num = 0;
|
|
|
|
/* check for correct codes parameters */
|
|
if((huff.val_bits < 1) || (huff.val_bits > 32) ||
|
|
(huff.max_bits < 0) || (huff.max_bits > 32)) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect tree parameters - literal length: %i, max code length: %i\n",
|
|
huff.val_bits, huff.max_bits);
|
|
return -1;
|
|
}
|
|
if((huff.nodes < 0) || (huff.nodes > 0x10000)) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect number of Huffman tree nodes: %i\n", huff.nodes);
|
|
return -1;
|
|
}
|
|
/* one-node tree */
|
|
if(huff.max_bits == 0)
|
|
huff.max_bits = 1;
|
|
|
|
/* allocate space for codes - it is exactly ceil(nodes / 2) entries */
|
|
huff.max_num = (huff.nodes + 1) >> 1;
|
|
huff.nums = av_mallocz(huff.max_num * sizeof(int));
|
|
huff.bits = av_mallocz(huff.max_num * sizeof(uint32_t));
|
|
huff.lens = av_mallocz(huff.max_num * sizeof(int));
|
|
|
|
if(tm2_read_tree(ctx, 0, 0, &huff) == -1)
|
|
res = -1;
|
|
|
|
if(huff.num != huff.max_num) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Got less codes than expected: %i of %i\n",
|
|
huff.num, huff.max_num);
|
|
res = -1;
|
|
}
|
|
|
|
/* convert codes to vlc_table */
|
|
if(res != -1) {
|
|
int i;
|
|
|
|
res = init_vlc(&code->vlc, huff.max_bits, huff.max_num,
|
|
huff.lens, sizeof(int), sizeof(int),
|
|
huff.bits, sizeof(uint32_t), sizeof(uint32_t), 0);
|
|
if(res < 0) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
|
|
res = -1;
|
|
} else
|
|
res = 0;
|
|
if(res != -1) {
|
|
code->bits = huff.max_bits;
|
|
code->length = huff.max_num;
|
|
code->recode = av_malloc(code->length * sizeof(int));
|
|
for(i = 0; i < code->length; i++)
|
|
code->recode[i] = huff.nums[i];
|
|
}
|
|
}
|
|
/* free allocated memory */
|
|
av_free(huff.nums);
|
|
av_free(huff.bits);
|
|
av_free(huff.lens);
|
|
|
|
return res;
|
|
}
|
|
|
|
static void tm2_free_codes(TM2Codes *code)
|
|
{
|
|
if(code->recode)
|
|
av_free(code->recode);
|
|
if(code->vlc.table)
|
|
free_vlc(&code->vlc);
|
|
}
|
|
|
|
static inline int tm2_get_token(GetBitContext *gb, TM2Codes *code)
|
|
{
|
|
int val;
|
|
val = get_vlc2(gb, code->vlc.table, code->bits, 1);
|
|
return code->recode[val];
|
|
}
|
|
|
|
static inline int tm2_read_header(TM2Context *ctx, uint8_t *buf)
|
|
{
|
|
uint32_t magic;
|
|
uint8_t *obuf;
|
|
int length;
|
|
|
|
obuf = buf;
|
|
|
|
magic = LE_32(buf);
|
|
buf += 4;
|
|
|
|
if(magic == 0x00000100) { /* old header */
|
|
/* av_log (ctx->avctx, AV_LOG_ERROR, "TM2 old header: not implemented (yet)\n"); */
|
|
return 40;
|
|
} else if(magic == 0x00000101) { /* new header */
|
|
int w, h, size, flags, xr, yr;
|
|
|
|
length = LE_32(buf);
|
|
buf += 4;
|
|
|
|
init_get_bits(&ctx->gb, buf, 32 * 8);
|
|
size = get_bits_long(&ctx->gb, 31);
|
|
h = get_bits(&ctx->gb, 15);
|
|
w = get_bits(&ctx->gb, 15);
|
|
flags = get_bits_long(&ctx->gb, 31);
|
|
yr = get_bits(&ctx->gb, 9);
|
|
xr = get_bits(&ctx->gb, 9);
|
|
|
|
return 40;
|
|
} else {
|
|
av_log (ctx->avctx, AV_LOG_ERROR, "Not a TM2 header: 0x%08X\n", magic);
|
|
return -1;
|
|
}
|
|
|
|
return (buf - obuf);
|
|
}
|
|
|
|
static int tm2_read_deltas(TM2Context *ctx, int stream_id) {
|
|
int d, mb;
|
|
int i, v;
|
|
|
|
d = get_bits(&ctx->gb, 9);
|
|
mb = get_bits(&ctx->gb, 5);
|
|
|
|
if((d < 1) || (d > TM2_DELTAS) || (mb < 1) || (mb > 32)) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect delta table: %i deltas x %i bits\n", d, mb);
|
|
return -1;
|
|
}
|
|
|
|
for(i = 0; i < d; i++) {
|
|
v = get_bits_long(&ctx->gb, mb);
|
|
if(v & (1 << (mb - 1)))
|
|
ctx->deltas[stream_id][i] = v - (1 << mb);
|
|
else
|
|
ctx->deltas[stream_id][i] = v;
|
|
}
|
|
for(; i < TM2_DELTAS; i++)
|
|
ctx->deltas[stream_id][i] = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tm2_read_stream(TM2Context *ctx, uint8_t *buf, int stream_id) {
|
|
int i;
|
|
int cur = 0;
|
|
int skip = 0;
|
|
int len, toks;
|
|
TM2Codes codes;
|
|
|
|
/* get stream length in dwords */
|
|
len = BE_32(buf); buf += 4; cur += 4;
|
|
skip = len * 4 + 4;
|
|
|
|
if(len == 0)
|
|
return 4;
|
|
|
|
toks = BE_32(buf); buf += 4; cur += 4;
|
|
if(toks & 1) {
|
|
len = BE_32(buf); buf += 4; cur += 4;
|
|
if(len == TM2_ESCAPE) {
|
|
len = BE_32(buf); buf += 4; cur += 4;
|
|
}
|
|
if(len > 0) {
|
|
init_get_bits(&ctx->gb, buf, (skip - cur) * 8);
|
|
if(tm2_read_deltas(ctx, stream_id) == -1)
|
|
return -1;
|
|
buf += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
|
|
cur += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
|
|
}
|
|
}
|
|
/* skip unused fields */
|
|
if(BE_32(buf) == TM2_ESCAPE) {
|
|
buf += 4; cur += 4; /* some unknown length - could be escaped too */
|
|
}
|
|
buf += 4; cur += 4;
|
|
buf += 4; cur += 4; /* unused by decoder */
|
|
|
|
init_get_bits(&ctx->gb, buf, (skip - cur) * 8);
|
|
if(tm2_build_huff_table(ctx, &codes) == -1)
|
|
return -1;
|
|
buf += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
|
|
cur += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
|
|
|
|
toks >>= 1;
|
|
/* check if we have sane number of tokens */
|
|
if((toks < 0) || (toks > 0xFFFFFF)){
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect number of tokens: %i\n", toks);
|
|
tm2_free_codes(&codes);
|
|
return -1;
|
|
}
|
|
ctx->tokens[stream_id] = av_realloc(ctx->tokens[stream_id], toks * sizeof(int));
|
|
ctx->tok_lens[stream_id] = toks;
|
|
len = BE_32(buf); buf += 4; cur += 4;
|
|
if(len > 0) {
|
|
init_get_bits(&ctx->gb, buf, (skip - cur) * 8);
|
|
for(i = 0; i < toks; i++)
|
|
ctx->tokens[stream_id][i] = tm2_get_token(&ctx->gb, &codes);
|
|
} else {
|
|
for(i = 0; i < toks; i++)
|
|
ctx->tokens[stream_id][i] = codes.recode[0];
|
|
}
|
|
tm2_free_codes(&codes);
|
|
|
|
return skip;
|
|
}
|
|
|
|
static inline int GET_TOK(TM2Context *ctx,int type) {
|
|
if(ctx->tok_ptrs[type] >= ctx->tok_lens[type]) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Read token from stream %i out of bounds (%i>=%i)\n", type, ctx->tok_ptrs[type], ctx->tok_lens[type]);
|
|
return 0;
|
|
}
|
|
if(type <= TM2_MOT)
|
|
return ctx->deltas[type][ctx->tokens[type][ctx->tok_ptrs[type]++]];
|
|
return ctx->tokens[type][ctx->tok_ptrs[type]++];
|
|
}
|
|
|
|
/* blocks decoding routines */
|
|
|
|
/* common Y, U, V pointers initialisation */
|
|
#define TM2_INIT_POINTERS() \
|
|
int *last, *clast; \
|
|
int *Y, *U, *V;\
|
|
int Ystride, Ustride, Vstride;\
|
|
\
|
|
Ystride = ctx->avctx->width;\
|
|
Vstride = (ctx->avctx->width + 1) >> 1;\
|
|
Ustride = (ctx->avctx->width + 1) >> 1;\
|
|
Y = (ctx->cur?ctx->Y2:ctx->Y1) + by * 4 * Ystride + bx * 4;\
|
|
V = (ctx->cur?ctx->V2:ctx->V1) + by * 2 * Vstride + bx * 2;\
|
|
U = (ctx->cur?ctx->U2:ctx->U1) + by * 2 * Ustride + bx * 2;\
|
|
last = ctx->last + bx * 4;\
|
|
clast = ctx->clast + bx * 4;
|
|
|
|
#define TM2_INIT_POINTERS_2() \
|
|
int *Yo, *Uo, *Vo;\
|
|
int oYstride, oUstride, oVstride;\
|
|
\
|
|
TM2_INIT_POINTERS();\
|
|
oYstride = Ystride;\
|
|
oVstride = Vstride;\
|
|
oUstride = Ustride;\
|
|
Yo = (ctx->cur?ctx->Y1:ctx->Y2) + by * 4 * oYstride + bx * 4;\
|
|
Vo = (ctx->cur?ctx->V1:ctx->V2) + by * 2 * oVstride + bx * 2;\
|
|
Uo = (ctx->cur?ctx->U1:ctx->U2) + by * 2 * oUstride + bx * 2;
|
|
|
|
/* recalculate last and delta values for next blocks */
|
|
#define TM2_RECALC_BLOCK(CHR, stride, last, CD) {\
|
|
CD[0] = (CHR[1] - 128) - last[1];\
|
|
CD[1] = (int)CHR[stride + 1] - (int)CHR[1];\
|
|
last[0] = (int)CHR[stride + 0] - 128;\
|
|
last[1] = (int)CHR[stride + 1] - 128;}
|
|
|
|
/* common operations - add deltas to 4x4 block of luma or 2x2 blocks of chroma */
|
|
static inline void tm2_apply_deltas(TM2Context *ctx, int* Y, int stride, int *deltas, int *last)
|
|
{
|
|
int ct, d;
|
|
int i, j;
|
|
|
|
for(j = 0; j < 4; j++){
|
|
ct = ctx->D[j];
|
|
for(i = 0; i < 4; i++){
|
|
d = deltas[i + j * 4];
|
|
ct += d;
|
|
last[i] += ct;
|
|
Y[i] = clip_uint8(last[i]);
|
|
}
|
|
Y += stride;
|
|
ctx->D[j] = ct;
|
|
}
|
|
}
|
|
|
|
static inline void tm2_high_chroma(int *data, int stride, int *last, int *CD, int *deltas)
|
|
{
|
|
int i, j;
|
|
for(j = 0; j < 2; j++){
|
|
for(i = 0; i < 2; i++){
|
|
CD[j] += deltas[i + j * 2];
|
|
last[i] += CD[j];
|
|
data[i] = last[i] + 128;
|
|
}
|
|
data += stride;
|
|
}
|
|
}
|
|
|
|
static inline void tm2_low_chroma(int *data, int stride, int *clast, int *CD, int *deltas, int bx)
|
|
{
|
|
int t;
|
|
int l;
|
|
int prev;
|
|
|
|
if(bx > 0)
|
|
prev = clast[-3];
|
|
else
|
|
prev = 0;
|
|
t = (CD[0] + CD[1]) >> 1;
|
|
l = (prev - CD[0] - CD[1] + clast[1]) >> 1;
|
|
CD[1] = CD[0] + CD[1] - t;
|
|
CD[0] = t;
|
|
clast[0] = l;
|
|
|
|
tm2_high_chroma(data, stride, clast, CD, deltas);
|
|
}
|
|
|
|
static inline void tm2_hi_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
|
|
{
|
|
int i;
|
|
int deltas[16];
|
|
TM2_INIT_POINTERS();
|
|
|
|
/* hi-res chroma */
|
|
for(i = 0; i < 4; i++) {
|
|
deltas[i] = GET_TOK(ctx, TM2_C_HI);
|
|
deltas[i + 4] = GET_TOK(ctx, TM2_C_HI);
|
|
}
|
|
tm2_high_chroma(U, Ustride, clast, ctx->CD, deltas);
|
|
tm2_high_chroma(V, Vstride, clast + 2, ctx->CD + 2, deltas + 4);
|
|
|
|
/* hi-res luma */
|
|
for(i = 0; i < 16; i++)
|
|
deltas[i] = GET_TOK(ctx, TM2_L_HI);
|
|
|
|
tm2_apply_deltas(ctx, Y, Ystride, deltas, last);
|
|
}
|
|
|
|
static inline void tm2_med_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
|
|
{
|
|
int i;
|
|
int deltas[16];
|
|
TM2_INIT_POINTERS();
|
|
|
|
/* low-res chroma */
|
|
deltas[0] = GET_TOK(ctx, TM2_C_LO);
|
|
deltas[1] = deltas[2] = deltas[3] = 0;
|
|
tm2_low_chroma(U, Ustride, clast, ctx->CD, deltas, bx);
|
|
|
|
deltas[0] = GET_TOK(ctx, TM2_C_LO);
|
|
deltas[1] = deltas[2] = deltas[3] = 0;
|
|
tm2_low_chroma(V, Vstride, clast + 2, ctx->CD + 2, deltas, bx);
|
|
|
|
/* hi-res luma */
|
|
for(i = 0; i < 16; i++)
|
|
deltas[i] = GET_TOK(ctx, TM2_L_HI);
|
|
|
|
tm2_apply_deltas(ctx, Y, Ystride, deltas, last);
|
|
}
|
|
|
|
static inline void tm2_low_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
|
|
{
|
|
int i;
|
|
int t1, t2;
|
|
int deltas[16];
|
|
TM2_INIT_POINTERS();
|
|
|
|
/* low-res chroma */
|
|
deltas[0] = GET_TOK(ctx, TM2_C_LO);
|
|
deltas[1] = deltas[2] = deltas[3] = 0;
|
|
tm2_low_chroma(U, Ustride, clast, ctx->CD, deltas, bx);
|
|
|
|
deltas[0] = GET_TOK(ctx, TM2_C_LO);
|
|
deltas[1] = deltas[2] = deltas[3] = 0;
|
|
tm2_low_chroma(V, Vstride, clast + 2, ctx->CD + 2, deltas, bx);
|
|
|
|
/* low-res luma */
|
|
for(i = 0; i < 16; i++)
|
|
deltas[i] = 0;
|
|
|
|
deltas[ 0] = GET_TOK(ctx, TM2_L_LO);
|
|
deltas[ 2] = GET_TOK(ctx, TM2_L_LO);
|
|
deltas[ 8] = GET_TOK(ctx, TM2_L_LO);
|
|
deltas[10] = GET_TOK(ctx, TM2_L_LO);
|
|
|
|
if(bx > 0)
|
|
last[0] = (last[-1] - ctx->D[0] - ctx->D[1] - ctx->D[2] - ctx->D[3] + last[1]) >> 1;
|
|
else
|
|
last[0] = (last[1] - ctx->D[0] - ctx->D[1] - ctx->D[2] - ctx->D[3])>> 1;
|
|
last[2] = (last[1] + last[3]) >> 1;
|
|
|
|
t1 = ctx->D[0] + ctx->D[1];
|
|
ctx->D[0] = t1 >> 1;
|
|
ctx->D[1] = t1 - (t1 >> 1);
|
|
t2 = ctx->D[2] + ctx->D[3];
|
|
ctx->D[2] = t2 >> 1;
|
|
ctx->D[3] = t2 - (t2 >> 1);
|
|
|
|
tm2_apply_deltas(ctx, Y, Ystride, deltas, last);
|
|
}
|
|
|
|
static inline void tm2_null_res_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
|
|
{
|
|
int i;
|
|
int ct;
|
|
int left, right, diff;
|
|
int deltas[16];
|
|
TM2_INIT_POINTERS();
|
|
|
|
/* null chroma */
|
|
deltas[0] = deltas[1] = deltas[2] = deltas[3] = 0;
|
|
tm2_low_chroma(U, Ustride, clast, ctx->CD, deltas, bx);
|
|
|
|
deltas[0] = deltas[1] = deltas[2] = deltas[3] = 0;
|
|
tm2_low_chroma(V, Vstride, clast + 2, ctx->CD + 2, deltas, bx);
|
|
|
|
/* null luma */
|
|
for(i = 0; i < 16; i++)
|
|
deltas[i] = 0;
|
|
|
|
ct = ctx->D[0] + ctx->D[1] + ctx->D[2] + ctx->D[3];
|
|
|
|
if(bx > 0)
|
|
left = last[-1] - ct;
|
|
else
|
|
left = 0;
|
|
|
|
right = last[3];
|
|
diff = right - left;
|
|
last[0] = left + (diff >> 2);
|
|
last[1] = left + (diff >> 1);
|
|
last[2] = right - (diff >> 2);
|
|
last[3] = right;
|
|
{
|
|
int tp = left;
|
|
|
|
ctx->D[0] = (tp + (ct >> 2)) - left;
|
|
left += ctx->D[0];
|
|
ctx->D[1] = (tp + (ct >> 1)) - left;
|
|
left += ctx->D[1];
|
|
ctx->D[2] = ((tp + ct) - (ct >> 2)) - left;
|
|
left += ctx->D[2];
|
|
ctx->D[3] = (tp + ct) - left;
|
|
}
|
|
tm2_apply_deltas(ctx, Y, Ystride, deltas, last);
|
|
}
|
|
|
|
static inline void tm2_still_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
|
|
{
|
|
int i, j;
|
|
TM2_INIT_POINTERS_2();
|
|
|
|
/* update chroma */
|
|
for(j = 0; j < 2; j++){
|
|
for(i = 0; i < 2; i++){
|
|
U[i] = Uo[i];
|
|
V[i] = Vo[i];
|
|
}
|
|
U += Ustride; V += Vstride;
|
|
Uo += oUstride; Vo += oVstride;
|
|
}
|
|
U -= Ustride * 2;
|
|
V -= Vstride * 2;
|
|
TM2_RECALC_BLOCK(U, Ustride, clast, ctx->CD);
|
|
TM2_RECALC_BLOCK(V, Vstride, (clast + 2), (ctx->CD + 2));
|
|
|
|
/* update deltas */
|
|
ctx->D[0] = Yo[3] - last[3];
|
|
ctx->D[1] = Yo[3 + oYstride] - Yo[3];
|
|
ctx->D[2] = Yo[3 + oYstride * 2] - Yo[3 + oYstride];
|
|
ctx->D[3] = Yo[3 + oYstride * 3] - Yo[3 + oYstride * 2];
|
|
|
|
for(j = 0; j < 4; j++){
|
|
for(i = 0; i < 4; i++){
|
|
Y[i] = Yo[i];
|
|
last[i] = Yo[i];
|
|
}
|
|
Y += Ystride;
|
|
Yo += oYstride;
|
|
}
|
|
}
|
|
|
|
static inline void tm2_update_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
|
|
{
|
|
int i, j;
|
|
int d;
|
|
TM2_INIT_POINTERS_2();
|
|
|
|
/* update chroma */
|
|
for(j = 0; j < 2; j++){
|
|
for(i = 0; i < 2; i++){
|
|
U[i] = Uo[i] + GET_TOK(ctx, TM2_UPD);
|
|
V[i] = Vo[i] + GET_TOK(ctx, TM2_UPD);
|
|
}
|
|
U += Ustride; V += Vstride;
|
|
Uo += oUstride; Vo += oVstride;
|
|
}
|
|
U -= Ustride * 2;
|
|
V -= Vstride * 2;
|
|
TM2_RECALC_BLOCK(U, Ustride, clast, ctx->CD);
|
|
TM2_RECALC_BLOCK(V, Vstride, (clast + 2), (ctx->CD + 2));
|
|
|
|
/* update deltas */
|
|
ctx->D[0] = Yo[3] - last[3];
|
|
ctx->D[1] = Yo[3 + oYstride] - Yo[3];
|
|
ctx->D[2] = Yo[3 + oYstride * 2] - Yo[3 + oYstride];
|
|
ctx->D[3] = Yo[3 + oYstride * 3] - Yo[3 + oYstride * 2];
|
|
|
|
for(j = 0; j < 4; j++){
|
|
d = last[3];
|
|
for(i = 0; i < 4; i++){
|
|
Y[i] = Yo[i] + GET_TOK(ctx, TM2_UPD);
|
|
last[i] = Y[i];
|
|
}
|
|
ctx->D[j] = last[3] - d;
|
|
Y += Ystride;
|
|
Yo += oYstride;
|
|
}
|
|
}
|
|
|
|
static inline void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
|
|
{
|
|
int i, j;
|
|
int mx, my;
|
|
TM2_INIT_POINTERS_2();
|
|
|
|
mx = GET_TOK(ctx, TM2_MOT);
|
|
my = GET_TOK(ctx, TM2_MOT);
|
|
|
|
Yo += my * oYstride + mx;
|
|
Uo += (my >> 1) * oUstride + (mx >> 1);
|
|
Vo += (my >> 1) * oVstride + (mx >> 1);
|
|
|
|
/* copy chroma */
|
|
for(j = 0; j < 2; j++){
|
|
for(i = 0; i < 2; i++){
|
|
U[i] = Uo[i];
|
|
V[i] = Vo[i];
|
|
}
|
|
U += Ustride; V += Vstride;
|
|
Uo += oUstride; Vo += oVstride;
|
|
}
|
|
U -= Ustride * 2;
|
|
V -= Vstride * 2;
|
|
TM2_RECALC_BLOCK(U, Ustride, clast, ctx->CD);
|
|
TM2_RECALC_BLOCK(V, Vstride, (clast + 2), (ctx->CD + 2));
|
|
|
|
/* copy luma */
|
|
for(j = 0; j < 4; j++){
|
|
for(i = 0; i < 4; i++){
|
|
Y[i] = Yo[i];
|
|
}
|
|
Y += Ystride;
|
|
Yo += oYstride;
|
|
}
|
|
/* calculate deltas */
|
|
Y -= Ystride * 4;
|
|
ctx->D[0] = Y[3] - last[3];
|
|
ctx->D[1] = Y[3 + Ystride] - Y[3];
|
|
ctx->D[2] = Y[3 + Ystride * 2] - Y[3 + Ystride];
|
|
ctx->D[3] = Y[3 + Ystride * 3] - Y[3 + Ystride * 2];
|
|
for(i = 0; i < 4; i++)
|
|
last[i] = Y[i + Ystride * 3];
|
|
}
|
|
|
|
static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p)
|
|
{
|
|
int i, j;
|
|
int bw, bh;
|
|
int type;
|
|
int keyframe = 1;
|
|
uint8_t *Y, *U, *V;
|
|
int *src;
|
|
|
|
bw = ctx->avctx->width >> 2;
|
|
bh = ctx->avctx->height >> 2;
|
|
|
|
for(i = 0; i < TM2_NUM_STREAMS; i++)
|
|
ctx->tok_ptrs[i] = 0;
|
|
|
|
if (ctx->tok_lens[TM2_TYPE]<bw*bh){
|
|
av_log(ctx->avctx,AV_LOG_ERROR,"Got %i tokens for %i blocks\n",ctx->tok_lens[TM2_TYPE],bw*bh);
|
|
return -1;
|
|
}
|
|
|
|
memset(ctx->last, 0, 4 * bw * sizeof(int));
|
|
memset(ctx->clast, 0, 4 * bw * sizeof(int));
|
|
|
|
for(j = 0; j < bh; j++) {
|
|
memset(ctx->D, 0, 4 * sizeof(int));
|
|
memset(ctx->CD, 0, 4 * sizeof(int));
|
|
for(i = 0; i < bw; i++) {
|
|
type = GET_TOK(ctx, TM2_TYPE);
|
|
switch(type) {
|
|
case TM2_HI_RES:
|
|
tm2_hi_res_block(ctx, p, i, j);
|
|
break;
|
|
case TM2_MED_RES:
|
|
tm2_med_res_block(ctx, p, i, j);
|
|
break;
|
|
case TM2_LOW_RES:
|
|
tm2_low_res_block(ctx, p, i, j);
|
|
break;
|
|
case TM2_NULL_RES:
|
|
tm2_null_res_block(ctx, p, i, j);
|
|
break;
|
|
case TM2_UPDATE:
|
|
tm2_update_block(ctx, p, i, j);
|
|
keyframe = 0;
|
|
break;
|
|
case TM2_STILL:
|
|
tm2_still_block(ctx, p, i, j);
|
|
keyframe = 0;
|
|
break;
|
|
case TM2_MOTION:
|
|
tm2_motion_block(ctx, p, i, j);
|
|
keyframe = 0;
|
|
break;
|
|
default:
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Skipping unknown block type %i\n", type);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* copy data from our buffer to AVFrame */
|
|
Y = p->data[0];
|
|
src = (ctx->cur?ctx->Y2:ctx->Y1);
|
|
for(j = 0; j < ctx->avctx->height; j++){
|
|
for(i = 0; i < ctx->avctx->width; i++){
|
|
Y[i] = clip_uint8(*src++);
|
|
}
|
|
Y += p->linesize[0];
|
|
}
|
|
U = p->data[2];
|
|
src = (ctx->cur?ctx->U2:ctx->U1);
|
|
for(j = 0; j < (ctx->avctx->height + 1) >> 1; j++){
|
|
for(i = 0; i < (ctx->avctx->width + 1) >> 1; i++){
|
|
U[i] = clip_uint8(*src++);
|
|
}
|
|
U += p->linesize[2];
|
|
}
|
|
V = p->data[1];
|
|
src = (ctx->cur?ctx->V2:ctx->V1);
|
|
for(j = 0; j < (ctx->avctx->height + 1) >> 1; j++){
|
|
for(i = 0; i < (ctx->avctx->width + 1) >> 1; i++){
|
|
V[i] = clip_uint8(*src++);
|
|
}
|
|
V += p->linesize[1];
|
|
}
|
|
|
|
return keyframe;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
uint8_t *buf, int buf_size)
|
|
{
|
|
TM2Context * const l = avctx->priv_data;
|
|
AVFrame * const p= (AVFrame*)&l->pic;
|
|
int skip, t;
|
|
|
|
p->reference = 1;
|
|
p->buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
|
|
if(avctx->reget_buffer(avctx, p) < 0){
|
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
|
return -1;
|
|
}
|
|
|
|
l->dsp.bswap_buf((uint32_t*)buf, (uint32_t*)buf, buf_size >> 2);
|
|
skip = tm2_read_header(l, buf);
|
|
|
|
if(skip == -1)
|
|
return -1;
|
|
|
|
t = tm2_read_stream(l, buf + skip, TM2_C_HI);
|
|
if(t == -1)
|
|
return -1;
|
|
skip += t;
|
|
t = tm2_read_stream(l, buf + skip, TM2_C_LO);
|
|
if(t == -1)
|
|
return -1;
|
|
skip += t;
|
|
t = tm2_read_stream(l, buf + skip, TM2_L_HI);
|
|
if(t == -1)
|
|
return -1;
|
|
skip += t;
|
|
t = tm2_read_stream(l, buf + skip, TM2_L_LO);
|
|
if(t == -1)
|
|
return -1;
|
|
skip += t;
|
|
t = tm2_read_stream(l, buf + skip, TM2_UPD);
|
|
if(t == -1)
|
|
return -1;
|
|
skip += t;
|
|
t = tm2_read_stream(l, buf + skip, TM2_MOT);
|
|
if(t == -1)
|
|
return -1;
|
|
skip += t;
|
|
t = tm2_read_stream(l, buf + skip, TM2_TYPE);
|
|
if(t == -1)
|
|
return -1;
|
|
p->key_frame = tm2_decode_blocks(l, p);
|
|
if(p->key_frame)
|
|
p->pict_type = FF_I_TYPE;
|
|
else
|
|
p->pict_type = FF_P_TYPE;
|
|
|
|
l->cur = !l->cur;
|
|
*data_size = sizeof(AVFrame);
|
|
*(AVFrame*)data = l->pic;
|
|
|
|
return buf_size;
|
|
}
|
|
|
|
static int decode_init(AVCodecContext *avctx){
|
|
TM2Context * const l = avctx->priv_data;
|
|
int i;
|
|
|
|
if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
|
|
return -1;
|
|
}
|
|
if((avctx->width & 3) || (avctx->height & 3)){
|
|
av_log(avctx, AV_LOG_ERROR, "Width and height must be multiple of 4\n");
|
|
return -1;
|
|
}
|
|
|
|
l->avctx = avctx;
|
|
l->pic.data[0]=NULL;
|
|
avctx->has_b_frames = 0;
|
|
avctx->pix_fmt = PIX_FMT_YUV420P;
|
|
|
|
dsputil_init(&l->dsp, avctx);
|
|
|
|
l->last = av_malloc(4 * sizeof(int) * (avctx->width >> 2));
|
|
l->clast = av_malloc(4 * sizeof(int) * (avctx->width >> 2));
|
|
|
|
for(i = 0; i < TM2_NUM_STREAMS; i++) {
|
|
l->tokens[i] = NULL;
|
|
l->tok_lens[i] = 0;
|
|
}
|
|
|
|
l->Y1 = av_malloc(sizeof(int) * avctx->width * avctx->height);
|
|
l->U1 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
|
|
l->V1 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
|
|
l->Y2 = av_malloc(sizeof(int) * avctx->width * avctx->height);
|
|
l->U2 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
|
|
l->V2 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
|
|
l->cur = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_end(AVCodecContext *avctx){
|
|
TM2Context * const l = avctx->priv_data;
|
|
int i;
|
|
|
|
if(l->last)
|
|
av_free(l->last);
|
|
if(l->clast)
|
|
av_free(l->clast);
|
|
for(i = 0; i < TM2_NUM_STREAMS; i++)
|
|
if(l->tokens[i])
|
|
av_free(l->tokens[i]);
|
|
if(l->Y1){
|
|
av_free(l->Y1);
|
|
av_free(l->U1);
|
|
av_free(l->V1);
|
|
av_free(l->Y2);
|
|
av_free(l->U2);
|
|
av_free(l->V2);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
AVCodec truemotion2_decoder = {
|
|
"truemotion2",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_TRUEMOTION2,
|
|
sizeof(TM2Context),
|
|
decode_init,
|
|
NULL,
|
|
decode_end,
|
|
decode_frame,
|
|
CODEC_CAP_DR1,
|
|
};
|