* 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
*/
*/
#include "avcodec.h"
+#include "bytestream.h"
#include "get_bits.h"
#include "dsputil.h"
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
+ VLC vlc; ///< table for Libav bitstream reader
int bits;
int *recode; ///< table for converting from code indexes to values
int length;
/* check for correct codes parameters */
if((huff.val_bits < 1) || (huff.val_bits > 32) ||
- (huff.max_bits < 0) || (huff.max_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 -1;
}
- if((huff.nodes < 0) || (huff.nodes > 0x10000)) {
+ 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;
}
{
av_free(code->recode);
if(code->vlc.table)
- free_vlc(&code->vlc);
+ ff_free_vlc(&code->vlc);
}
static inline int tm2_get_token(GetBitContext *gb, TM2Codes *code)
{
uint32_t magic;
const uint8_t *obuf;
- int length;
obuf = buf;
/* 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);
-
return 40;
} else {
av_log (ctx->avctx, AV_LOG_ERROR, "Not a TM2 header: 0x%08X\n", magic);
static int tm2_read_stream(TM2Context *ctx, const uint8_t *buf, int stream_id, int buf_size)
{
int i;
- int cur = 0;
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)
return -1;
}
- toks = AV_RB32(buf); buf += 4; cur += 4;
+ toks = bytestream2_get_be32(&gb);
if(toks & 1) {
- len = AV_RB32(buf); buf += 4; cur += 4;
+ len = bytestream2_get_be32(&gb);
if(len == TM2_ESCAPE) {
- len = AV_RB32(buf); buf += 4; cur += 4;
+ len = bytestream2_get_be32(&gb);
}
if(len > 0) {
- init_get_bits(&ctx->gb, buf, (skip - cur) * 8);
+ pos = bytestream2_tell(&gb);
+ if (skip <= pos)
+ return -1;
+ init_get_bits(&ctx->gb, buf + pos, (skip - pos) * 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;
+ 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);
+ pos = bytestream2_tell(&gb);
+ if (skip <= pos)
+ return -1;
+ init_get_bits(&ctx->gb, buf + pos, (skip - pos) * 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;
+ bytestream2_skip(&gb, ((get_bits_count(&ctx->gb) + 31) >> 5) << 2);
toks >>= 1;
/* check if we have sane number of tokens */
}
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;
+ len = bytestream2_get_be32(&gb);
if(len > 0) {
- init_get_bits(&ctx->gb, buf, (skip - cur) * 8);
+ pos = bytestream2_tell(&gb);
+ if (skip <= pos)
+ return -1;
+ 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 -1;
}
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);
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;\
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);
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;
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++)
ctx->tok_ptrs[i] = 0;
U = (ctx->cur?ctx->U2:ctx->U1);
V = (ctx->cur?ctx->V2:ctx->V1);
dst = p->data[0];
- for(j = 0; j < ctx->avctx->height; j++){
- for(i = 0; i < ctx->avctx->width; i++){
+ 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 += ctx->avctx->width;
+
+ /* 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);
+ }
+
+ Y += ctx->y_stride;
if (j & 1) {
- U += ctx->avctx->width >> 1;
- V += ctx->avctx->width >> 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;
}
dst += p->linesize[0];
}
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
+ int buf_size = avpkt->size & ~3;
TM2Context * const l = avctx->priv_data;
- AVFrame * const p= (AVFrame*)&l->pic;
+ AVFrame * const p = &l->pic;
int i, skip, t;
uint8_t *swbuf;
}
for(i = 0; i < TM2_NUM_STREAMS; i++){
- t = tm2_read_stream(l, swbuf + skip, tm2_stream_order[i], buf_size);
- if(t == -1){
+ if (skip >= buf_size) {
av_free(swbuf);
- return -1;
+ return AVERROR_INVALIDDATA;
+ }
+ t = tm2_read_stream(l, swbuf + skip, tm2_stream_order[i], buf_size - skip);
+ if(t < 0){
+ av_free(swbuf);
+ return t;
}
skip += t;
}
p->key_frame = tm2_decode_blocks(l, p);
if(p->key_frame)
- p->pict_type = FF_I_TYPE;
+ 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);
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((avctx->width & 3) || (avctx->height & 3)){
av_log(avctx, AV_LOG_ERROR, "Width and height must be multiple of 4\n");
l->pic.data[0]=NULL;
avctx->pix_fmt = 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++) {
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;
}
for(i = 0; i < TM2_NUM_STREAMS; 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->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);
}
if (pic->data[0])
}
AVCodec ff_truemotion2_decoder = {
- "truemotion2",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_TRUEMOTION2,
- sizeof(TM2Context),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 2.0"),
+ .name = "truemotion2",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_TRUEMOTION2,
+ .priv_data_size = sizeof(TM2Context),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 2.0"),
};
projects / ffmpeg / blobdiff