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Diffstat (limited to 'libavcodec/truemotion2.c')
-rw-r--r--libavcodec/truemotion2.c137
1 files changed, 106 insertions, 31 deletions
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c
index 38c01c100d..c4f66e8f6d 100644
--- a/libavcodec/truemotion2.c
+++ b/libavcodec/truemotion2.c
@@ -60,7 +60,9 @@ typedef struct TM2Context{
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;
@@ -131,7 +133,7 @@ static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code)
/* 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;
@@ -328,10 +330,21 @@ static int tm2_read_stream(TM2Context *ctx, const uint8_t *buf, int stream_id, i
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);
@@ -361,9 +374,9 @@ static inline int GET_TOK(TM2Context *ctx,int 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;\
@@ -651,6 +664,8 @@ static inline void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int b
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);
if (4*bx+mx<0 || 4*by+my<0 || 4*bx+mx+4 > ctx->avctx->width || 4*by+my+4 > ctx->avctx->height) {
av_log(0,0, "MV out of picture\n");
@@ -696,15 +711,12 @@ static inline void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int b
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;
@@ -757,17 +769,54 @@ static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p)
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];
}
@@ -813,9 +862,10 @@ static int decode_frame(AVCodecContext *avctx,
av_log(avctx, AV_LOG_ERROR, "no space for tm2_read_stream\n");
return AVERROR_INVALIDDATA;
}
+
t = tm2_read_stream(l, l->buffer + skip, tm2_stream_order[i], buf_size - skip);
- if(t == -1){
- return -1;
+ if(t < 0){
+ return t;
}
skip += t;
}
@@ -834,7 +884,7 @@ static int decode_frame(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((avctx->width & 3) || (avctx->height & 3)){
av_log(avctx, AV_LOG_ERROR, "Width and height must be multiple of 4\n");
@@ -848,21 +898,46 @@ static av_cold int decode_init(AVCodecContext *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;
}
@@ -877,12 +952,12 @@ static av_cold int decode_end(AVCodecContext *avctx){
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);
}
av_freep(&l->buffer);
l->buffer_size = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 03:17:35 +0000