mirror of
https://github.com/FFmpeg/FFmpeg.git
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Duck TrueMotion 2 video decoder, courtesy of Konstantin Shishkov
Originally committed as revision 4638 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson
parent
f37f8d4c55
commit
64af6168f7
@ -18,7 +18,7 @@ OBJS= bitstream.o utils.o mem.o allcodecs.o \
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fft.o mdct.o raw.o golomb.o cabac.o\
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dpcm.o adx.o faandct.o parser.o g726.o \
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vp3dsp.o h264idct.o rangecoder.o pnm.o h263.o msmpeg4.o h263dec.o dvdsub.o dvbsub.o dvbsubdec.o\
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opt.o
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opt.o truemotion2.o
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ifeq ($(CONFIG_AASC_DECODER),yes)
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OBJS+= aasc.o
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@ -424,6 +424,9 @@ void avcodec_register_all(void)
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#ifdef CONFIG_TRUEMOTION1_DECODER
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register_avcodec(&truemotion1_decoder);
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#endif //CONFIG_TRUEMOTION1_DECODER
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#ifdef CONFIG_TRUEMOTION2_DECODER
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register_avcodec(&truemotion2_decoder);
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#endif //CONFIG_TRUEMOTION2_DECODER
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#ifdef CONFIG_VMDVIDEO_DECODER
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register_avcodec(&vmdvideo_decoder);
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#endif //CONFIG_VMDVIDEO_DECODER
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@ -111,6 +111,7 @@ enum CodecID {
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CODEC_ID_AASC,
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CODEC_ID_INDEO2,
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CODEC_ID_FRAPS,
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CODEC_ID_TRUEMOTION2,
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/* various pcm "codecs" */
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CODEC_ID_PCM_S16LE= 0x10000,
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@ -2039,6 +2040,7 @@ extern AVCodec flic_decoder;
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extern AVCodec vmdvideo_decoder;
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extern AVCodec vmdaudio_decoder;
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extern AVCodec truemotion1_decoder;
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extern AVCodec truemotion2_decoder;
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extern AVCodec mszh_decoder;
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extern AVCodec zlib_decoder;
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extern AVCodec ra_144_decoder;
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889
libavcodec/truemotion2.c
Normal file
889
libavcodec/truemotion2.c
Normal file
@ -0,0 +1,889 @@
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/*
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* Duck/ON2 TrueMotion 2 Decoder
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* Copyright (c) 2005 Konstantin Shishkov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/**
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* @file truemotion2.c
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* Duck TrueMotion2 decoder.
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*/
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#include "avcodec.h"
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#include "common.h"
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#include "bitstream.h"
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#include "dsputil.h"
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#define TM2_ESCAPE 0x80000000
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#define TM2_DELTAS 32
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/* Huffman-coded streams of different types of blocks */
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enum TM2_STREAMS{ TM2_C_HI = 0, TM2_C_LO, TM2_L_HI, TM2_L_LO,
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TM2_UPD, TM2_MOT, TM2_TYPE, TM2_NUM_STREAMS};
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/* Block types */
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enum TM2_BLOCKS{ TM2_HI_RES = 0, TM2_MED_RES, TM2_LOW_RES, TM2_NULL_RES,
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TM2_UPDATE, TM2_STILL, TM2_MOTION};
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typedef struct TM2Context{
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AVCodecContext *avctx;
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AVFrame pic;
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GetBitContext gb;
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DSPContext dsp;
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/* TM2 streams */
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int *tokens[TM2_NUM_STREAMS];
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int tok_lens[TM2_NUM_STREAMS];
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int tok_ptrs[TM2_NUM_STREAMS];
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int deltas[TM2_NUM_STREAMS][TM2_DELTAS];
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/* for blocks decoding */
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int D[4];
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int CD[4];
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int *last;
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int *clast;
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/* data for current and previous frame */
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int *Y1, *U1, *V1, *Y2, *U2, *V2;
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int cur;
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} TM2Context;
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/**
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* Huffman codes for each of streams
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*/
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typedef struct TM2Codes{
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VLC vlc; ///< table for FFmpeg bitstream reader
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int bits;
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int *recode; ///< table for converting from code indexes to values
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int length;
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} TM2Codes;
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/**
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* structure for gathering Huffman codes information
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*/
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typedef struct TM2Huff{
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int val_bits; ///< length of literal
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int max_bits; ///< maximum length of code
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int min_bits; ///< minimum length of code
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int nodes; ///< total number of nodes in tree
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int num; ///< current number filled
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int max_num; ///< total number of codes
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int *nums; ///< literals
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uint32_t *bits; ///< codes
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int *lens; ///< codelengths
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} TM2Huff;
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static int tm2_read_tree(TM2Context *ctx, uint32_t prefix, int length, TM2Huff *huff)
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{
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if(length > huff->max_bits) {
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av_log(ctx->avctx, AV_LOG_ERROR, "Tree exceeded its given depth (%i)\n", huff->max_bits);
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return -1;
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}
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if(!get_bits1(&ctx->gb)) { /* literal */
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if (length == 0) {
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length = 1;
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}
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if(huff->num >= huff->max_num) {
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av_log(ctx->avctx, AV_LOG_DEBUG, "Too many literals\n");
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return -1;
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}
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huff->nums[huff->num] = get_bits_long(&ctx->gb, huff->val_bits);
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huff->bits[huff->num] = prefix;
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huff->lens[huff->num] = length;
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huff->num++;
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return 0;
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} else { /* non-terminal node */
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if(tm2_read_tree(ctx, prefix << 1, length + 1, huff) == -1)
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return -1;
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if(tm2_read_tree(ctx, (prefix << 1) | 1, length + 1, huff) == -1)
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return -1;
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}
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return 0;
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}
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static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code)
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{
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TM2Huff huff;
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int res = 0;
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huff.val_bits = get_bits(&ctx->gb, 5);
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huff.max_bits = get_bits(&ctx->gb, 5);
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huff.min_bits = get_bits(&ctx->gb, 5);
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huff.nodes = get_bits_long(&ctx->gb, 17);
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huff.num = 0;
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/* check for correct codes parameters */
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if((huff.val_bits < 1) || (huff.val_bits > 32) ||
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(huff.max_bits < 0) || (huff.max_bits > 32)) {
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av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect tree parameters - literal length: %i, max code length: %i\n",
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huff.val_bits, huff.max_bits);
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return -1;
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}
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if((huff.nodes < 0) || (huff.nodes > 0x10000)) {
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av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect number of Huffman tree nodes: %i\n", huff.nodes);
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return -1;
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}
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/* one-node tree */
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if(huff.max_bits == 0)
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huff.max_bits = 1;
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/* allocate space for codes - it is exactly ceil(nodes / 2) entries */
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huff.max_num = (huff.nodes + 1) >> 1;
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huff.nums = av_mallocz(huff.max_num * sizeof(int));
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huff.bits = av_mallocz(huff.max_num * sizeof(uint32_t));
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huff.lens = av_mallocz(huff.max_num * sizeof(int));
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if(tm2_read_tree(ctx, 0, 0, &huff) == -1)
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res = -1;
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if(huff.num != huff.max_num) {
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av_log(ctx->avctx, AV_LOG_ERROR, "Got less codes than expected: %i of %i\n",
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huff.num, huff.max_num);
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res = -1;
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}
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/* convert codes to vlc_table */
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if(res != -1) {
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int i;
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res = init_vlc(&code->vlc, huff.max_bits, huff.max_num,
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huff.lens, sizeof(int), sizeof(int),
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huff.bits, sizeof(uint32_t), sizeof(uint32_t), 0);
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if(res < 0) {
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av_log(ctx->avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
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res = -1;
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} else
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res = 0;
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if(res != -1) {
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code->bits = huff.max_bits;
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code->length = huff.max_num;
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code->recode = av_malloc(code->length * sizeof(int));
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for(i = 0; i < code->length; i++)
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code->recode[i] = huff.nums[i];
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}
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}
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/* free allocated memory */
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av_free(huff.nums);
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av_free(huff.bits);
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av_free(huff.lens);
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return res;
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}
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static void tm2_free_codes(TM2Codes *code)
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{
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if(code->recode)
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av_free(code->recode);
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if(code->vlc.table)
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free_vlc(&code->vlc);
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}
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static inline int tm2_get_token(GetBitContext *gb, TM2Codes *code)
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{
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int val;
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val = get_vlc2(gb, code->vlc.table, code->bits, 1);
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return code->recode[val];
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}
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static inline int tm2_read_header(TM2Context *ctx, uint8_t *buf)
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{
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uint32_t magic;
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uint8_t *obuf;
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int length;
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obuf = buf;
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magic = LE_32(buf);
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buf += 4;
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if(magic == 0x00000100) { /* old header */
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/* av_log (ctx->avctx, AV_LOG_ERROR, "TM2 old header: not implemented (yet)\n"); */
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return 40;
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} else if(magic == 0x00000101) { /* new header */
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int w, h, size, flags, xr, yr;
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length = LE_32(buf);
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buf += 4;
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init_get_bits(&ctx->gb, buf, 32);
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size = get_bits_long(&ctx->gb, 31);
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h = get_bits(&ctx->gb, 15);
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w = get_bits(&ctx->gb, 15);
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flags = get_bits_long(&ctx->gb, 31);
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yr = get_bits(&ctx->gb, 9);
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xr = get_bits(&ctx->gb, 9);
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return 40;
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} else {
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av_log (ctx->avctx, AV_LOG_ERROR, "Not a TM2 header: 0x%08X\n", magic);
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return -1;
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}
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return (buf - obuf);
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}
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static int tm2_read_deltas(TM2Context *ctx, int stream_id) {
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int d, mb;
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int i, v;
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d = get_bits(&ctx->gb, 9);
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mb = get_bits(&ctx->gb, 5);
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if((d < 1) || (d > TM2_DELTAS) || (mb < 1) || (mb > 32)) {
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av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect delta table: %i deltas x %i bits\n", d, mb);
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return -1;
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}
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for(i = 0; i < d; i++) {
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v = get_bits_long(&ctx->gb, mb);
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if(v & (1 << (mb - 1)))
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ctx->deltas[stream_id][i] = v - (1 << mb);
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else
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ctx->deltas[stream_id][i] = v;
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}
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for(; i < TM2_DELTAS; i++)
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ctx->deltas[stream_id][i] = 0;
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return 0;
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}
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static int tm2_read_stream(TM2Context *ctx, uint8_t *buf, int stream_id) {
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int i;
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int cur = 0;
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int skip = 0;
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int len, toks;
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TM2Codes codes;
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/* get stream length in dwords */
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len = BE_32(buf); buf += 4; cur += 4;
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skip = len * 4 + 4;
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if(len == 0)
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return 4;
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toks = BE_32(buf); buf += 4; cur += 4;
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if(toks & 1) {
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len = BE_32(buf); buf += 4; cur += 4;
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if(len == TM2_ESCAPE) {
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len = BE_32(buf); buf += 4; cur += 4;
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}
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if(len > 0) {
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init_get_bits(&ctx->gb, buf, skip - cur);
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if(tm2_read_deltas(ctx, stream_id) == -1)
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return -1;
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buf += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
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cur += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
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}
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}
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/* skip unused fields */
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if(BE_32(buf) == TM2_ESCAPE) {
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buf += 4; cur += 4; /* some unknown length - could be escaped too */
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}
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buf += 4; cur += 4;
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buf += 4; cur += 4; /* unused by decoder */
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init_get_bits(&ctx->gb, buf, skip - cur);
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if(tm2_build_huff_table(ctx, &codes) == -1)
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return -1;
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buf += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
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cur += ((get_bits_count(&ctx->gb) + 31) >> 5) << 2;
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toks >>= 1;
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/* check if we have sane number of tokens */
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if((toks < 0) || (toks > 0xFFFFFF)){
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av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect number of tokens: %i\n", toks);
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tm2_free_codes(&codes);
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return -1;
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}
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ctx->tokens[stream_id] = av_realloc(ctx->tokens[stream_id], toks * sizeof(int));
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ctx->tok_lens[stream_id] = toks;
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len = BE_32(buf); buf += 4; cur += 4;
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if(len > 0) {
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init_get_bits(&ctx->gb, buf, skip - cur);
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for(i = 0; i < toks; i++)
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ctx->tokens[stream_id][i] = tm2_get_token(&ctx->gb, &codes);
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} else {
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memset(ctx->tokens[stream_id], 0, toks * sizeof(int));
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}
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tm2_free_codes(&codes);
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return skip;
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}
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static inline int GET_TOK(TM2Context *ctx,int type) {
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if(ctx->tok_ptrs[type] >= ctx->tok_lens[type]) {
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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]);
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return 0;
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}
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if(type <= TM2_MOT)
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return ctx->deltas[type][ctx->tokens[type][ctx->tok_ptrs[type]++]];
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return ctx->tokens[type][ctx->tok_ptrs[type]++];
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}
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/* blocks decoding routines */
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/* common Y, U, V pointers initialisation */
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#define TM2_INIT_POINTERS(); \
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int *last, *clast; \
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int *Y, *U, *V;\
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int Ystride, Ustride, Vstride;\
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\
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Ystride = ctx->avctx->width;\
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Vstride = (ctx->avctx->width + 1) >> 1;\
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Ustride = (ctx->avctx->width + 1) >> 1;\
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Y = (ctx->cur?ctx->Y2:ctx->Y1) + by * 4 * Ystride + bx * 4;\
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V = (ctx->cur?ctx->V2:ctx->V1) + by * 2 * Vstride + bx * 2;\
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U = (ctx->cur?ctx->U2:ctx->U1) + by * 2 * Ustride + bx * 2;\
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last = ctx->last + bx * 4;\
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clast = ctx->clast + bx * 4;
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#define TM2_INIT_POINTERS_2(); \
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int *Yo, *Uo, *Vo;\
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int oYstride, oUstride, oVstride;\
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\
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TM2_INIT_POINTERS();\
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oYstride = Ystride;\
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oVstride = Vstride;\
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oUstride = Ustride;\
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Yo = (ctx->cur?ctx->Y1:ctx->Y2) + by * 4 * oYstride + bx * 4;\
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Vo = (ctx->cur?ctx->V1:ctx->V2) + by * 2 * oVstride + bx * 2;\
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Uo = (ctx->cur?ctx->U1:ctx->U2) + by * 2 * oUstride + bx * 2;
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/* recalculate last and delta values for next blocks */
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#define TM2_RECALC_BLOCK(CHR, stride, last, CD) {\
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CD[0] = (CHR[1] - 128) - last[1];\
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CD[1] = (int)CHR[stride + 1] - (int)CHR[1];\
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last[0] = (int)CHR[stride + 0] - 128;\
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last[1] = (int)CHR[stride + 1] - 128;}
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/* common operations - add deltas to 4x4 block of luma or 2x2 blocks of chroma */
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static inline void tm2_apply_deltas(TM2Context *ctx, int* Y, int stride, int *deltas, int *last)
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{
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int ct, d;
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int i, j;
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for(j = 0; j < 4; j++){
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ct = ctx->D[j];
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for(i = 0; i < 4; i++){
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d = deltas[i + j * 4];
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ct += d;
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last[i] += ct;
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Y[i] = clip_uint8(last[i]);
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}
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Y += stride;
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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) >> 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] = 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] = 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] = 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;
|
||||
if(avctx->get_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->height, avctx->width) < 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->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));
|
||||
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,
|
||||
};
|
||||
@ -188,6 +188,7 @@ const CodecTag codec_bmp_tags[] = {
|
||||
{ CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
|
||||
{ CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
|
||||
{ CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
|
||||
{ CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
|
||||
{ CODEC_ID_RAWVIDEO, 0 },
|
||||
{ 0, 0 },
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user