* Duck/ON2 TrueMotion 2 Decoder
* Copyright (c) 2005 Konstantin Shishkov
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
*/
/**
- * @file truemotion2.c
+ * @file
* Duck TrueMotion2 decoder.
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "bytestream.h"
+#include "get_bits.h"
#include "dsputil.h"
+#include "internal.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};
+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};
+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{
+typedef struct TM2Context {
AVCodecContext *avctx;
AVFrame pic;
int *clast;
/* data for current and previous frame */
+ int *Y1_base, *U1_base, *V1_base, *Y2_base, *U2_base, *V2_base;
int *Y1, *U1, *V1, *Y2, *U2, *V2;
+ int y_stride, uv_stride;
int cur;
} TM2Context;
/**
* Huffman codes for each of streams
*/
-typedef struct TM2Codes{
- VLC vlc; ///< table for FFmpeg bitstream reader
+typedef struct TM2Codes {
+ VLC vlc; ///< table for Libav bitstream reader
int bits;
int *recode; ///< table for converting from code indexes to values
int length;
/**
* structure for gathering Huffman codes information
*/
-typedef struct TM2Huff{
+typedef struct TM2Huff {
int val_bits; ///< length of literal
int max_bits; ///< maximum length of code
int min_bits; ///< minimum length of code
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;
+ int ret;
+ if (length > huff->max_bits) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "Tree exceeded its given depth (%i)\n",
+ huff->max_bits);
+ return AVERROR_INVALIDDATA;
}
- if(!get_bits1(&ctx->gb)) { /* literal */
+ if (!get_bits1(&ctx->gb)) { /* literal */
if (length == 0) {
length = 1;
}
- if(huff->num >= huff->max_num) {
+ if (huff->num >= huff->max_num) {
av_log(ctx->avctx, AV_LOG_DEBUG, "Too many literals\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
huff->nums[huff->num] = get_bits_long(&ctx->gb, huff->val_bits);
huff->bits[huff->num] = prefix;
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;
+ if ((ret = tm2_read_tree(ctx, prefix << 1, length + 1, huff)) < 0)
+ return ret;
+ if ((ret = tm2_read_tree(ctx, (prefix << 1) | 1, length + 1, huff)) < 0)
+ return ret;
}
return 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;
+ 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.val_bits < 1) || (huff.val_bits > 32) ||
+ (huff.max_bits < 0) || (huff.max_bits > 25)) {
+ 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 AVERROR_INVALIDDATA;
}
- 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;
+ 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 AVERROR_INVALIDDATA;
}
/* one-node tree */
- if(huff.max_bits == 0)
+ 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));
+ 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;
+ res = tm2_read_tree(ctx, 0, 0, &huff);
- if(huff.num != huff.max_num) {
+ 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;
+ res = AVERROR_INVALIDDATA;
}
/* convert codes to vlc_table */
- if(res != -1) {
+ if (res >= 0) {
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) {
+ 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) {
+ else {
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++)
+ for (i = 0; i < code->length; i++)
code->recode[i] = huff.nums[i];
}
}
static void tm2_free_codes(TM2Codes *code)
{
- if(code->recode)
- av_free(code->recode);
- if(code->vlc.table)
- free_vlc(&code->vlc);
+ av_free(code->recode);
+ if (code->vlc.table)
+ ff_free_vlc(&code->vlc);
}
static inline int tm2_get_token(GetBitContext *gb, TM2Codes *code)
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;
+#define TM2_OLD_HEADER_MAGIC 0x00000100
+#define TM2_NEW_HEADER_MAGIC 0x00000101
- magic = AV_RL32(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 = AV_RL32(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);
+static inline int tm2_read_header(TM2Context *ctx, const uint8_t *buf)
+{
+ uint32_t magic = AV_RL32(buf);
- return 40;
- } else {
- av_log (ctx->avctx, AV_LOG_ERROR, "Not a TM2 header: 0x%08X\n", magic);
- return -1;
+ switch (magic) {
+ case TM2_OLD_HEADER_MAGIC:
+ avpriv_request_sample(ctx->avctx, "Old TM2 header");
+ return 0;
+ case TM2_NEW_HEADER_MAGIC:
+ return 0;
+ default:
+ av_log(ctx->avctx, AV_LOG_ERROR, "Not a TM2 header: 0x%08X\n", magic);
+ return AVERROR_INVALIDDATA;
}
-
- return (buf - obuf);
}
-static int tm2_read_deltas(TM2Context *ctx, int stream_id) {
+static int tm2_read_deltas(TM2Context *ctx, int stream_id)
+{
int d, mb;
int i, v;
- d = get_bits(&ctx->gb, 9);
+ d = get_bits(&ctx->gb, 9);
mb = get_bits(&ctx->gb, 5);
- if((d < 1) || (d > TM2_DELTAS) || (mb < 1) || (mb > 32)) {
+ 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;
+ return AVERROR_INVALIDDATA;
}
- for(i = 0; i < d; i++) {
+ for (i = 0; i < d; i++) {
v = get_bits_long(&ctx->gb, mb);
- if(v & (1 << (mb - 1)))
+ 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++)
+ 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;
+static int tm2_read_stream(TM2Context *ctx, const uint8_t *buf, int stream_id, int buf_size)
+{
+ int i, ret;
int skip = 0;
- int len, toks;
+ int len, toks, pos;
TM2Codes codes;
+ GetByteContext gb;
/* get stream length in dwords */
- len = AV_RB32(buf); buf += 4; cur += 4;
+ bytestream2_init(&gb, buf, buf_size);
+ len = bytestream2_get_be32(&gb);
skip = len * 4 + 4;
- if(len == 0)
+ if (len == 0)
return 4;
- toks = AV_RB32(buf); buf += 4; cur += 4;
- if(toks & 1) {
- len = AV_RB32(buf); buf += 4; cur += 4;
- if(len == TM2_ESCAPE) {
- len = AV_RB32(buf); buf += 4; cur += 4;
+ if (len >= INT_MAX/4-1 || len < 0 || len > buf_size) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "Error, invalid stream size.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ toks = bytestream2_get_be32(&gb);
+ if (toks & 1) {
+ len = bytestream2_get_be32(&gb);
+ if (len == TM2_ESCAPE) {
+ len = bytestream2_get_be32(&gb);
}
- 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;
+ if (len > 0) {
+ pos = bytestream2_tell(&gb);
+ if (skip <= pos)
+ return AVERROR_INVALIDDATA;
+ init_get_bits(&ctx->gb, buf + pos, (skip - pos) * 8);
+ if ((ret = tm2_read_deltas(ctx, stream_id)) < 0)
+ return ret;
+ bytestream2_skip(&gb, ((get_bits_count(&ctx->gb) + 31) >> 5) << 2);
}
}
/* skip unused fields */
- if(AV_RB32(buf) == TM2_ESCAPE) {
- buf += 4; cur += 4; /* some unknown length - could be escaped too */
+ len = bytestream2_get_be32(&gb);
+ if (len == TM2_ESCAPE) { /* some unknown length - could be escaped too */
+ bytestream2_skip(&gb, 8); /* unused by decoder */
+ } else {
+ bytestream2_skip(&gb, 4); /* unused by decoder */
}
- 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;
+ pos = bytestream2_tell(&gb);
+ if (skip <= pos)
+ return AVERROR_INVALIDDATA;
+ init_get_bits(&ctx->gb, buf + pos, (skip - pos) * 8);
+ if ((ret = tm2_build_huff_table(ctx, &codes)) < 0)
+ return ret;
+ bytestream2_skip(&gb, ((get_bits_count(&ctx->gb) + 31) >> 5) << 2);
toks >>= 1;
/* check if we have sane number of tokens */
- if((toks < 0) || (toks > 0xFFFFFF)){
+ 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;
+ return AVERROR_INVALIDDATA;
}
- ctx->tokens[stream_id] = av_realloc(ctx->tokens[stream_id], toks * sizeof(int));
+ ctx->tokens[stream_id] = av_realloc(ctx->tokens[stream_id], toks * sizeof(int));
ctx->tok_lens[stream_id] = toks;
- len = AV_RB32(buf); buf += 4; cur += 4;
- if(len > 0) {
- init_get_bits(&ctx->gb, buf, (skip - cur) * 8);
- for(i = 0; i < toks; i++)
+ len = bytestream2_get_be32(&gb);
+ if (len > 0) {
+ pos = bytestream2_tell(&gb);
+ if (skip <= pos)
+ return AVERROR_INVALIDDATA;
+ init_get_bits(&ctx->gb, buf + pos, (skip - pos) * 8);
+ for (i = 0; i < toks; i++) {
+ if (get_bits_left(&ctx->gb) <= 0) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect number of tokens: %i\n", toks);
+ return AVERROR_INVALIDDATA;
+ }
ctx->tokens[stream_id][i] = tm2_get_token(&ctx->gb, &codes);
+ if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >= TM2_DELTAS) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "Invalid delta token index %d for type %d, n=%d\n",
+ ctx->tokens[stream_id][i], stream_id, i);
+ return AVERROR_INVALIDDATA;
+ }
+ }
} else {
- for(i = 0; i < toks; i++)
+ for (i = 0; i < toks; i++) {
ctx->tokens[stream_id][i] = codes.recode[0];
+ if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >= TM2_DELTAS) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "Invalid delta token index %d for type %d, n=%d\n",
+ ctx->tokens[stream_id][i], stream_id, i);
+ return AVERROR_INVALIDDATA;
+ }
+ }
}
tm2_free_codes(&codes);
return skip;
}
-static inline int GET_TOK(TM2Context *ctx,int type) {
- if(ctx->tok_ptrs[type] >= ctx->tok_lens[type]) {
+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)
+ if (type <= TM2_MOT)
return ctx->deltas[type][ctx->tokens[type][ctx->tok_ptrs[type]++]];
return ctx->tokens[type][ctx->tok_ptrs[type]++];
}
int *Y, *U, *V;\
int Ystride, Ustride, Vstride;\
\
- Ystride = ctx->avctx->width;\
- Vstride = (ctx->avctx->width + 1) >> 1;\
- Ustride = (ctx->avctx->width + 1) >> 1;\
+ Ystride = ctx->y_stride;\
+ Vstride = ctx->uv_stride;\
+ Ustride = ctx->uv_stride;\
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;\
/* recalculate last and delta values for next blocks */
#define TM2_RECALC_BLOCK(CHR, stride, last, CD) {\
- CD[0] = (CHR[1] - 128) - last[1];\
+ CD[0] = CHR[1] - 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;}
+ last[0] = (int)CHR[stride + 0];\
+ last[1] = (int)CHR[stride + 1];}
/* 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++){
+ for (j = 0; j < 4; j++){
ct = ctx->D[j];
- for(i = 0; i < 4; i++){
- d = deltas[i + j * 4];
- ct += d;
+ for (i = 0; i < 4; i++){
+ d = deltas[i + j * 4];
+ ct += d;
last[i] += ct;
- Y[i] = av_clip_uint8(last[i]);
+ Y[i] = av_clip_uint8(last[i]);
}
- Y += stride;
+ 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];
+ 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[i] = last[i];
}
data += stride;
}
int l;
int prev;
- if(bx > 0)
+ 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;
+ 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);
TM2_INIT_POINTERS();
/* hi-res chroma */
- for(i = 0; i < 4; i++) {
- deltas[i] = GET_TOK(ctx, TM2_C_HI);
+ 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(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++)
+ for (i = 0; i < 16; i++)
deltas[i] = GET_TOK(ctx, TM2_L_HI);
tm2_apply_deltas(ctx, Y, Ystride, deltas, last);
tm2_low_chroma(V, Vstride, clast + 2, ctx->CD + 2, deltas, bx);
/* hi-res luma */
- for(i = 0; i < 16; i++)
+ for (i = 0; i < 16; i++)
deltas[i] = GET_TOK(ctx, TM2_L_HI);
tm2_apply_deltas(ctx, Y, Ystride, deltas, last);
tm2_low_chroma(V, Vstride, clast + 2, ctx->CD + 2, deltas, bx);
/* low-res luma */
- for(i = 0; i < 16; i++)
+ for (i = 0; i < 16; i++)
deltas[i] = 0;
deltas[ 0] = 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)
+ 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;
tm2_low_chroma(V, Vstride, clast + 2, ctx->CD + 2, deltas, bx);
/* null luma */
- for(i = 0; i < 16; i++)
+ 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)
+ if (bx > 0)
left = last[-1] - ct;
else
left = 0;
- right = last[3];
- diff = right - left;
+ right = last[3];
+ diff = right - left;
last[0] = left + (diff >> 2);
last[1] = left + (diff >> 1);
last[2] = right - (diff >> 2);
int tp = left;
ctx->D[0] = (tp + (ct >> 2)) - left;
- left += ctx->D[0];
+ left += ctx->D[0];
ctx->D[1] = (tp + (ct >> 1)) - left;
- left += ctx->D[1];
+ left += ctx->D[1];
ctx->D[2] = ((tp + ct) - (ct >> 2)) - left;
- left += ctx->D[2];
+ left += ctx->D[2];
ctx->D[3] = (tp + ct) - left;
}
tm2_apply_deltas(ctx, Y, Ystride, deltas, last);
TM2_INIT_POINTERS_2();
/* update chroma */
- for(j = 0; j < 2; j++){
- for(i = 0; i < 2; i++){
+ for (j = 0; j < 2; j++) {
+ for (i = 0; i < 2; i++){
U[i] = Uo[i];
V[i] = Vo[i];
}
- U += Ustride; V += Vstride;
+ U += Ustride; V += Vstride;
Uo += oUstride; Vo += oVstride;
}
U -= Ustride * 2;
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];
+ for (j = 0; j < 4; j++) {
+ for (i = 0; i < 4; i++) {
+ Y[i] = Yo[i];
last[i] = Yo[i];
}
- Y += Ystride;
+ Y += Ystride;
Yo += oYstride;
}
}
TM2_INIT_POINTERS_2();
/* update chroma */
- for(j = 0; j < 2; j++){
- for(i = 0; i < 2; i++){
+ 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;
+ V += Vstride;
+ Uo += oUstride;
+ Vo += oVstride;
}
U -= Ustride * 2;
V -= Vstride * 2;
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 (j = 0; j < 4; j++) {
d = last[3];
- for(i = 0; i < 4; i++){
- Y[i] = Yo[i] + GET_TOK(ctx, TM2_UPD);
+ 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;
+ Y += Ystride;
Yo += oYstride;
}
}
mx = GET_TOK(ctx, TM2_MOT);
my = GET_TOK(ctx, TM2_MOT);
+ mx = av_clip(mx, -(bx * 4 + 4), ctx->avctx->width - bx * 4);
+ my = av_clip(my, -(by * 4 + 4), ctx->avctx->height - by * 4);
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++){
+ 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;
+ V += Vstride;
+ Uo += oUstride;
+ Vo += oVstride;
}
U -= Ustride * 2;
V -= Vstride * 2;
TM2_RECALC_BLOCK(V, Vstride, (clast + 2), (ctx->CD + 2));
/* copy luma */
- for(j = 0; j < 4; j++){
- for(i = 0; i < 4; i++){
+ for (j = 0; j < 4; j++) {
+ for (i = 0; i < 4; i++) {
Y[i] = Yo[i];
}
- Y += Ystride;
+ Y += Ystride;
Yo += oYstride;
}
/* calculate deltas */
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++)
+ 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 w = ctx->avctx->width, h = ctx->avctx->height, bw = w >> 2, bh = h >> 2, cw = w >> 1;
int type;
int keyframe = 1;
- uint8_t *Y, *U, *V;
- int *src;
+ int *Y, *U, *V;
+ uint8_t *dst;
- bw = ctx->avctx->width >> 2;
- bh = ctx->avctx->height >> 2;
-
- for(i = 0; i < TM2_NUM_STREAMS; i++)
+ for (i = 0; i < TM2_NUM_STREAMS; i++)
ctx->tok_ptrs[i] = 0;
- if (ctx->tok_lens[TM2_TYPE]<bw*bh){
+ 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;
+ return AVERROR_INVALIDDATA;
}
memset(ctx->last, 0, 4 * bw * sizeof(int));
memset(ctx->clast, 0, 4 * bw * sizeof(int));
- for(j = 0; j < bh; j++) {
+ 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++) {
+ for (i = 0; i < bw; i++) {
type = GET_TOK(ctx, TM2_TYPE);
switch(type) {
case TM2_HI_RES:
}
/* 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] = av_clip_uint8(*src++);
+ Y = (ctx->cur?ctx->Y2:ctx->Y1);
+ U = (ctx->cur?ctx->U2:ctx->U1);
+ V = (ctx->cur?ctx->V2:ctx->V1);
+ dst = p->data[0];
+ for (j = 0; j < h; j++) {
+ for (i = 0; i < w; i++) {
+ int y = Y[i], u = U[i >> 1], v = V[i >> 1];
+ dst[3*i+0] = av_clip_uint8(y + v);
+ dst[3*i+1] = av_clip_uint8(y);
+ dst[3*i+2] = av_clip_uint8(y + u);
}
- 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] = av_clip_uint8(*src++);
+
+ /* horizontal edge extension */
+ Y[-4] = Y[-3] = Y[-2] = Y[-1] = Y[0];
+ Y[w + 3] = Y[w + 2] = Y[w + 1] = Y[w] = Y[w - 1];
+
+ /* vertical edge extension */
+ if (j == 0) {
+ memcpy(Y - 4 - 1 * ctx->y_stride, Y - 4, ctx->y_stride);
+ memcpy(Y - 4 - 2 * ctx->y_stride, Y - 4, ctx->y_stride);
+ memcpy(Y - 4 - 3 * ctx->y_stride, Y - 4, ctx->y_stride);
+ memcpy(Y - 4 - 4 * ctx->y_stride, Y - 4, ctx->y_stride);
+ } else if (j == h - 1) {
+ memcpy(Y - 4 + 1 * ctx->y_stride, Y - 4, ctx->y_stride);
+ memcpy(Y - 4 + 2 * ctx->y_stride, Y - 4, ctx->y_stride);
+ memcpy(Y - 4 + 3 * ctx->y_stride, Y - 4, ctx->y_stride);
+ memcpy(Y - 4 + 4 * ctx->y_stride, Y - 4, ctx->y_stride);
}
- 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] = av_clip_uint8(*src++);
+
+ Y += ctx->y_stride;
+ if (j & 1) {
+ /* horizontal edge extension */
+ U[-2] = U[-1] = U[0];
+ V[-2] = V[-1] = V[0];
+ U[cw + 1] = U[cw] = U[cw - 1];
+ V[cw + 1] = V[cw] = V[cw - 1];
+
+ /* vertical edge extension */
+ if (j == 1) {
+ memcpy(U - 2 - 1 * ctx->uv_stride, U - 2, ctx->uv_stride);
+ memcpy(V - 2 - 1 * ctx->uv_stride, V - 2, ctx->uv_stride);
+ memcpy(U - 2 - 2 * ctx->uv_stride, U - 2, ctx->uv_stride);
+ memcpy(V - 2 - 2 * ctx->uv_stride, V - 2, ctx->uv_stride);
+ } else if (j == h - 1) {
+ memcpy(U - 2 + 1 * ctx->uv_stride, U - 2, ctx->uv_stride);
+ memcpy(V - 2 + 1 * ctx->uv_stride, V - 2, ctx->uv_stride);
+ memcpy(U - 2 + 2 * ctx->uv_stride, U - 2, ctx->uv_stride);
+ memcpy(V - 2 + 2 * ctx->uv_stride, V - 2, ctx->uv_stride);
+ }
+
+ U += ctx->uv_stride;
+ V += ctx->uv_stride;
}
- V += p->linesize[1];
+ dst += p->linesize[0];
}
return keyframe;
}
+static const int tm2_stream_order[TM2_NUM_STREAMS] = {
+ TM2_C_HI, TM2_C_LO, TM2_L_HI, TM2_L_LO, TM2_UPD, TM2_MOT, TM2_TYPE
+};
+
+#define TM2_HEADER_SIZE 40
+
static int decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ void *data, int *got_frame,
+ AVPacket *avpkt)
{
TM2Context * const l = avctx->priv_data;
- AVFrame * const p= (AVFrame*)&l->pic;
- int skip, t;
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size & ~3;
+ AVFrame * const p = &l->pic;
+ int offset = TM2_HEADER_SIZE;
+ int i, t, ret;
+ uint8_t *swbuf;
+
+ swbuf = av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!swbuf) {
+ av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");
+ return AVERROR(ENOMEM);
+ }
- 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){
+ if ((ret = ff_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;
+ av_free(swbuf);
+ return ret;
+ }
+
+ l->dsp.bswap_buf((uint32_t*)swbuf, (const uint32_t*)buf, buf_size >> 2);
+
+ if ((ret = tm2_read_header(l, swbuf)) < 0) {
+ av_free(swbuf);
+ return ret;
+ }
+
+ for (i = 0; i < TM2_NUM_STREAMS; i++) {
+ if (offset >= buf_size) {
+ av_free(swbuf);
+ return AVERROR_INVALIDDATA;
+ }
+ t = tm2_read_stream(l, swbuf + offset, tm2_stream_order[i],
+ buf_size - offset);
+ if (t < 0) {
+ av_free(swbuf);
+ return t;
+ }
+ offset += t;
+ }
p->key_frame = tm2_decode_blocks(l, p);
- if(p->key_frame)
- p->pict_type = FF_I_TYPE;
+ if (p->key_frame)
+ p->pict_type = AV_PICTURE_TYPE_I;
else
- p->pict_type = FF_P_TYPE;
+ p->pict_type = AV_PICTURE_TYPE_P;
l->cur = !l->cur;
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = l->pic;
+ *got_frame = 1;
+ ret = av_frame_ref(data, &l->pic);
+ av_free(swbuf);
- return buf_size;
+ return (ret < 0) ? ret : buf_size;
}
-static int decode_init(AVCodecContext *avctx){
+static av_cold int decode_init(AVCodecContext *avctx)
+{
TM2Context * const l = avctx->priv_data;
- int i;
+ int i, w = avctx->width, h = avctx->height;
- if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
- return -1;
- }
- if((avctx->width & 3) || (avctx->height & 3)){
+ if ((avctx->width & 3) || (avctx->height & 3)) {
av_log(avctx, AV_LOG_ERROR, "Width and height must be multiple of 4\n");
- return -1;
+ return AVERROR(EINVAL);
}
- l->avctx = avctx;
- l->pic.data[0]=NULL;
- avctx->pix_fmt = PIX_FMT_YUV420P;
+ l->avctx = avctx;
+ avcodec_get_frame_defaults(&l->pic);
+ avctx->pix_fmt = AV_PIX_FMT_BGR24;
- dsputil_init(&l->dsp, avctx);
+ ff_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));
+ l->last = av_malloc(4 * sizeof(*l->last) * (w >> 2));
+ l->clast = av_malloc(4 * sizeof(*l->clast) * (w >> 2));
- for(i = 0; i < TM2_NUM_STREAMS; i++) {
+ 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));
+ w += 8;
+ h += 8;
+ l->Y1_base = av_malloc(sizeof(*l->Y1_base) * w * h);
+ l->Y2_base = av_malloc(sizeof(*l->Y2_base) * w * h);
+ l->y_stride = w;
+ w = (w + 1) >> 1;
+ h = (h + 1) >> 1;
+ l->U1_base = av_malloc(sizeof(*l->U1_base) * w * h);
+ l->V1_base = av_malloc(sizeof(*l->V1_base) * w * h);
+ l->U2_base = av_malloc(sizeof(*l->U2_base) * w * h);
+ l->V2_base = av_malloc(sizeof(*l->V1_base) * w * h);
+ l->uv_stride = w;
l->cur = 0;
+ if (!l->Y1_base || !l->Y2_base || !l->U1_base ||
+ !l->V1_base || !l->U2_base || !l->V2_base ||
+ !l->last || !l->clast) {
+ av_freep(&l->Y1_base);
+ av_freep(&l->Y2_base);
+ av_freep(&l->U1_base);
+ av_freep(&l->U2_base);
+ av_freep(&l->V1_base);
+ av_freep(&l->V2_base);
+ av_freep(&l->last);
+ av_freep(&l->clast);
+ return AVERROR(ENOMEM);
+ }
+ l->Y1 = l->Y1_base + l->y_stride * 4 + 4;
+ l->Y2 = l->Y2_base + l->y_stride * 4 + 4;
+ l->U1 = l->U1_base + l->uv_stride * 2 + 2;
+ l->U2 = l->U2_base + l->uv_stride * 2 + 2;
+ l->V1 = l->V1_base + l->uv_stride * 2 + 2;
+ l->V2 = l->V2_base + l->uv_stride * 2 + 2;
return 0;
}
-static int decode_end(AVCodecContext *avctx){
+static av_cold int decode_end(AVCodecContext *avctx)
+{
TM2Context * const l = avctx->priv_data;
+ AVFrame *pic = &l->pic;
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);
+ av_free(l->last);
+ av_free(l->clast);
+ for (i = 0; i < TM2_NUM_STREAMS; i++)
+ av_free(l->tokens[i]);
+ if (l->Y1) {
+ av_free(l->Y1_base);
+ av_free(l->U1_base);
+ av_free(l->V1_base);
+ av_free(l->Y2_base);
+ av_free(l->U2_base);
+ av_free(l->V2_base);
}
+
+ av_frame_unref(pic);
+
return 0;
}
-AVCodec truemotion2_decoder = {
- "truemotion2",
- CODEC_TYPE_VIDEO,
- CODEC_ID_TRUEMOTION2,
- sizeof(TM2Context),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1,
+AVCodec ff_truemotion2_decoder = {
+ .name = "truemotion2",
+ .long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 2.0"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_TRUEMOTION2,
+ .priv_data_size = sizeof(TM2Context),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff