diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/truemotion2.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/truemotion2.c | 892 |
1 files changed, 0 insertions, 892 deletions
diff --git a/contrib/ffmpeg/libavcodec/truemotion2.c b/contrib/ffmpeg/libavcodec/truemotion2.c deleted file mode 100644 index b282c967b..000000000 --- a/contrib/ffmpeg/libavcodec/truemotion2.c +++ /dev/null @@ -1,892 +0,0 @@ -/* - * Duck/ON2 TrueMotion 2 Decoder - * Copyright (c) 2005 Konstantin Shishkov - * - * This file is part of FFmpeg. - * - * FFmpeg 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, - * 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 - * 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 = 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); - - 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 = AV_RB32(buf); buf += 4; cur += 4; - skip = len * 4 + 4; - - 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 > 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(AV_RB32(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 = 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++) - 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] = av_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] = av_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] = av_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] = av_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->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, -}; |