diff options
Diffstat (limited to 'libavcodec/truemotion2.c')
| -rw-r--r-- | libavcodec/truemotion2.c | 126 |
1 files changed, 63 insertions, 63 deletions
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index 42487bf32b..8fa6ca81e3 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -17,12 +17,12 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ - + /** * @file truemotion2.c * Duck TrueMotion2 decoder. */ - + #include "avcodec.h" #include "common.h" #include "bitstream.h" @@ -43,7 +43,7 @@ typedef struct TM2Context{ GetBitContext gb; DSPContext dsp; - + /* TM2 streams */ int *tokens[TM2_NUM_STREAMS]; int tok_lens[TM2_NUM_STREAMS]; @@ -54,7 +54,7 @@ typedef struct TM2Context{ int CD[4]; int *last; int *clast; - + /* data for current and previous frame */ int *Y1, *U1, *V1, *Y2, *U2, *V2; int cur; @@ -118,13 +118,13 @@ 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)) { @@ -139,33 +139,33 @@ static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code) /* 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 + } else res = 0; if(res != -1) { code->bits = huff.max_bits; @@ -179,7 +179,7 @@ static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code) av_free(huff.nums); av_free(huff.bits); av_free(huff.lens); - + return res; } @@ -203,21 +203,21 @@ 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); @@ -225,28 +225,28 @@ static inline int tm2_read_header(TM2Context *ctx, uint8_t *buf) 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))) @@ -256,7 +256,7 @@ static int tm2_read_deltas(TM2Context *ctx, int stream_id) { } for(; i < TM2_DELTAS; i++) ctx->deltas[stream_id][i] = 0; - + return 0; } @@ -266,14 +266,14 @@ static int tm2_read_stream(TM2Context *ctx, uint8_t *buf, int stream_id) { 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; @@ -294,13 +294,13 @@ static int tm2_read_stream(TM2Context *ctx, uint8_t *buf, int stream_id) { } 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)){ @@ -320,7 +320,7 @@ static int tm2_read_stream(TM2Context *ctx, uint8_t *buf, int stream_id) { ctx->tokens[stream_id][i] = codes.recode[0]; } tm2_free_codes(&codes); - + return skip; } @@ -375,7 +375,7 @@ static inline void tm2_apply_deltas(TM2Context *ctx, int* Y, int stride, int *de { int ct, d; int i, j; - + for(j = 0; j < 4; j++){ ct = ctx->D[j]; for(i = 0; i < 4; i++){ @@ -417,7 +417,7 @@ static inline void tm2_low_chroma(int *data, int stride, int *clast, int *CD, in CD[1] = CD[0] + CD[1] - t; CD[0] = t; clast[0] = l; - + tm2_high_chroma(data, stride, clast, CD, deltas); } @@ -434,11 +434,11 @@ static inline void tm2_hi_res_block(TM2Context *ctx, AVFrame *pic, int bx, int b } 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); } @@ -447,7 +447,7 @@ static inline void tm2_med_res_block(TM2Context *ctx, AVFrame *pic, int bx, int 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; @@ -460,7 +460,7 @@ static inline void tm2_med_res_block(TM2Context *ctx, AVFrame *pic, int bx, int /* 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); } @@ -483,12 +483,12 @@ static inline void tm2_low_res_block(TM2Context *ctx, AVFrame *pic, int bx, int /* 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 @@ -501,7 +501,7 @@ static inline void tm2_low_res_block(TM2Context *ctx, AVFrame *pic, int bx, int 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); } @@ -512,25 +512,25 @@ static inline void tm2_null_res_block(TM2Context *ctx, AVFrame *pic, int bx, int 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); @@ -539,7 +539,7 @@ static inline void tm2_null_res_block(TM2Context *ctx, AVFrame *pic, int bx, int last[3] = right; { int tp = left; - + ctx->D[0] = (tp + (ct >> 2)) - left; left += ctx->D[0]; ctx->D[1] = (tp + (ct >> 1)) - left; @@ -591,7 +591,7 @@ static inline void tm2_update_block(TM2Context *ctx, AVFrame *pic, int bx, int b int i, j; int d; TM2_INIT_POINTERS_2(); - + /* update chroma */ for(j = 0; j < 2; j++){ for(i = 0; i < 2; i++){ @@ -632,11 +632,11 @@ 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); - + 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++){ @@ -677,18 +677,18 @@ static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p) 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)); @@ -727,8 +727,8 @@ static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p) } } } - - /* copy data from our buffer to AVFrame */ + + /* 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++){ @@ -753,11 +753,11 @@ static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p) } V += p->linesize[1]; } - + return keyframe; } -static int decode_frame(AVCodecContext *avctx, +static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size) { @@ -774,10 +774,10 @@ static int decode_frame(AVCodecContext *avctx, 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; @@ -810,11 +810,11 @@ static int decode_frame(AVCodecContext *avctx, 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; } @@ -829,22 +829,22 @@ static int decode_init(AVCodecContext *avctx){ 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)); @@ -852,7 +852,7 @@ static int decode_init(AVCodecContext *avctx){ 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; } |