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@@ -0,0 +1,965 @@
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+/*
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+ * MSMPEG4 backend for encoder and decoder
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+ * Copyright (c) 2001 Fabrice Bellard
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+ * Copyright (c) 2002-2013 Michael Niedermayer <michaelni@gmx.at>
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+ *
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+ * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
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+ *
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+ * This file is part of FFmpeg.
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+ *
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+ * FFmpeg 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 2.1 of the License, or (at your option) any later version.
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+ *
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+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+ */
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+
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+#include "avcodec.h"
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+#include "dsputil.h"
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+#include "mpegvideo.h"
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+#include "msmpeg4.h"
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+#include "libavutil/imgutils.h"
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+#include "libavutil/x86/asm.h"
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+#include "h263.h"
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+#include "mpeg4video.h"
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+#include "msmpeg4data.h"
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+#include "vc1data.h"
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+
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+#define DC_VLC_BITS 9
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+#define V2_INTRA_CBPC_VLC_BITS 3
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+#define V2_MB_TYPE_VLC_BITS 7
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+#define MV_VLC_BITS 9
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+#define V2_MV_VLC_BITS 9
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+#define TEX_VLC_BITS 9
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+
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+#define DEFAULT_INTER_INDEX 3
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+
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+static inline int msmpeg4v1_pred_dc(MpegEncContext * s, int n,
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+ int32_t **dc_val_ptr)
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+{
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+ int i;
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+
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+ if (n < 4) {
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+ i= 0;
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+ } else {
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+ i= n-3;
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+ }
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+
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+ *dc_val_ptr= &s->last_dc[i];
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+ return s->last_dc[i];
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+}
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+
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+/****************************************/
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+/* decoding stuff */
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+
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+VLC ff_mb_non_intra_vlc[4];
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+static VLC v2_dc_lum_vlc;
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+static VLC v2_dc_chroma_vlc;
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+static VLC v2_intra_cbpc_vlc;
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+static VLC v2_mb_type_vlc;
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+static VLC v2_mv_vlc;
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+VLC ff_inter_intra_vlc;
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+
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+/* This is identical to h263 except that its range is multiplied by 2. */
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+static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code)
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+{
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+ int code, val, sign, shift;
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+
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+ code = get_vlc2(&s->gb, v2_mv_vlc.table, V2_MV_VLC_BITS, 2);
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+ av_dlog(s, "MV code %d at %d %d pred: %d\n", code, s->mb_x,s->mb_y, pred);
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+ if (code < 0)
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+ return 0xffff;
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+
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+ if (code == 0)
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+ return pred;
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+ sign = get_bits1(&s->gb);
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+ shift = f_code - 1;
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+ val = code;
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+ if (shift) {
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+ val = (val - 1) << shift;
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+ val |= get_bits(&s->gb, shift);
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+ val++;
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+ }
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+ if (sign)
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+ val = -val;
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+
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+ val += pred;
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+ if (val <= -64)
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+ val += 64;
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+ else if (val >= 64)
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+ val -= 64;
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+
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+ return val;
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+}
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+
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+static int msmpeg4v12_decode_mb(MpegEncContext *s, int16_t block[6][64])
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+{
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+ int cbp, code, i;
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+ uint32_t * const mb_type_ptr = &s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride];
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+
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+ if (s->pict_type == AV_PICTURE_TYPE_P) {
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+ if (s->use_skip_mb_code) {
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+ if (get_bits1(&s->gb)) {
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+ /* skip mb */
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+ s->mb_intra = 0;
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+ for(i=0;i<6;i++)
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+ s->block_last_index[i] = -1;
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+ s->mv_dir = MV_DIR_FORWARD;
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+ s->mv_type = MV_TYPE_16X16;
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+ s->mv[0][0][0] = 0;
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+ s->mv[0][0][1] = 0;
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+ s->mb_skipped = 1;
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+ *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
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+ return 0;
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+ }
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+ }
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+
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+ if(s->msmpeg4_version==2)
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+ code = get_vlc2(&s->gb, v2_mb_type_vlc.table, V2_MB_TYPE_VLC_BITS, 1);
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+ else
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+ code = get_vlc2(&s->gb, ff_h263_inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
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+ if(code<0 || code>7){
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+ av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", code, s->mb_x, s->mb_y);
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+ return -1;
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+ }
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+
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+ s->mb_intra = code >>2;
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+
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+ cbp = code & 0x3;
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+ } else {
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+ s->mb_intra = 1;
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+ if(s->msmpeg4_version==2)
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+ cbp= get_vlc2(&s->gb, v2_intra_cbpc_vlc.table, V2_INTRA_CBPC_VLC_BITS, 1);
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+ else
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+ cbp= get_vlc2(&s->gb, ff_h263_intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 1);
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+ if(cbp<0 || cbp>3){
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+ av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y);
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+ return -1;
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+ }
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+ }
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+
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+ if (!s->mb_intra) {
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+ int mx, my, cbpy;
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+
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+ cbpy= get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
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+ if(cbpy<0){
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+ av_log(s->avctx, AV_LOG_ERROR, "cbpy %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y);
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+ return -1;
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+ }
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+
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+ cbp|= cbpy<<2;
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+ if(s->msmpeg4_version==1 || (cbp&3) != 3) cbp^= 0x3C;
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+
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+ ff_h263_pred_motion(s, 0, 0, &mx, &my);
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+ mx= msmpeg4v2_decode_motion(s, mx, 1);
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+ my= msmpeg4v2_decode_motion(s, my, 1);
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+
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+ s->mv_dir = MV_DIR_FORWARD;
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+ s->mv_type = MV_TYPE_16X16;
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+ s->mv[0][0][0] = mx;
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+ s->mv[0][0][1] = my;
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+ *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16;
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+ } else {
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+ if(s->msmpeg4_version==2){
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+ s->ac_pred = get_bits1(&s->gb);
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+ cbp|= get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors
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+ } else{
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+ s->ac_pred = 0;
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+ cbp|= get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors
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+ if(s->pict_type==AV_PICTURE_TYPE_P) cbp^=0x3C;
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+ }
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+ *mb_type_ptr = MB_TYPE_INTRA;
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+ }
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+
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+ s->dsp.clear_blocks(s->block[0]);
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+ for (i = 0; i < 6; i++) {
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+ if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
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+ {
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+ av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
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+ return -1;
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+ }
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+ }
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+ return 0;
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+}
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+
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+static int msmpeg4v34_decode_mb(MpegEncContext *s, int16_t block[6][64])
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+{
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+ int cbp, code, i;
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+ uint8_t *coded_val;
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+ uint32_t * const mb_type_ptr = &s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride];
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+
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+ if (s->pict_type == AV_PICTURE_TYPE_P) {
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+ if (s->use_skip_mb_code) {
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+ if (get_bits1(&s->gb)) {
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+ /* skip mb */
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+ s->mb_intra = 0;
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+ for(i=0;i<6;i++)
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+ s->block_last_index[i] = -1;
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+ s->mv_dir = MV_DIR_FORWARD;
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+ s->mv_type = MV_TYPE_16X16;
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+ s->mv[0][0][0] = 0;
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+ s->mv[0][0][1] = 0;
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+ s->mb_skipped = 1;
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+ *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
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+
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+ return 0;
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+ }
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+ }
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+
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+ code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[DEFAULT_INTER_INDEX].table, MB_NON_INTRA_VLC_BITS, 3);
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+ if (code < 0)
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+ return -1;
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+ //s->mb_intra = (code & 0x40) ? 0 : 1;
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+ s->mb_intra = (~code & 0x40) >> 6;
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+
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+ cbp = code & 0x3f;
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+ } else {
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+ s->mb_intra = 1;
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+ code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
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+ if (code < 0)
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+ return -1;
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+ /* predict coded block pattern */
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+ cbp = 0;
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+ for(i=0;i<6;i++) {
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+ int val = ((code >> (5 - i)) & 1);
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+ if (i < 4) {
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+ int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_val);
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+ val = val ^ pred;
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+ *coded_val = val;
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+ }
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+ cbp |= val << (5 - i);
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+ }
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+ }
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+
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+ if (!s->mb_intra) {
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+ int mx, my;
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+ if(s->per_mb_rl_table && cbp){
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+ s->rl_table_index = decode012(&s->gb);
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+ s->rl_chroma_table_index = s->rl_table_index;
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+ }
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+ ff_h263_pred_motion(s, 0, 0, &mx, &my);
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+ if (ff_msmpeg4_decode_motion(s, &mx, &my) < 0)
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+ return -1;
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+ s->mv_dir = MV_DIR_FORWARD;
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+ s->mv_type = MV_TYPE_16X16;
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+ s->mv[0][0][0] = mx;
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+ s->mv[0][0][1] = my;
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+ *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16;
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+ } else {
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+ av_dlog(s, "I at %d %d %d %06X\n", s->mb_x, s->mb_y,
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+ ((cbp & 3) ? 1 : 0) +((cbp & 0x3C)? 2 : 0),
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+ show_bits(&s->gb, 24));
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+ s->ac_pred = get_bits1(&s->gb);
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+ *mb_type_ptr = MB_TYPE_INTRA;
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+ if(s->inter_intra_pred){
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+ s->h263_aic_dir= get_vlc2(&s->gb, ff_inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
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+ av_dlog(s, "%d%d %d %d/",
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+ s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
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+ }
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+ if(s->per_mb_rl_table && cbp){
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+ s->rl_table_index = decode012(&s->gb);
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+ s->rl_chroma_table_index = s->rl_table_index;
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+ }
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+ }
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+
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+ s->dsp.clear_blocks(s->block[0]);
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+ for (i = 0; i < 6; i++) {
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+ if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
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+ {
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+ av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
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+ return -1;
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+ }
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+ }
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+
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+ return 0;
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+}
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+
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+/* init all vlc decoding tables */
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+av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx)
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+{
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+ MpegEncContext *s = avctx->priv_data;
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+ static volatile int done = 0;
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+ int i, ret;
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+ MVTable *mv;
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+
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+ if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
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+ return ret;
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+
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+ if (ff_h263_decode_init(avctx) < 0)
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+ return -1;
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+
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+ ff_msmpeg4_common_init(s);
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+
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+ if (!done) {
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+ for(i=0;i<NB_RL_TABLES;i++) {
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+ ff_init_rl(&ff_rl_table[i], ff_static_rl_table_store[i]);
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+ }
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+ INIT_VLC_RL(ff_rl_table[0], 642);
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+ INIT_VLC_RL(ff_rl_table[1], 1104);
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+ INIT_VLC_RL(ff_rl_table[2], 554);
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+ INIT_VLC_RL(ff_rl_table[3], 940);
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+ INIT_VLC_RL(ff_rl_table[4], 962);
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+ INIT_VLC_RL(ff_rl_table[5], 554);
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+
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+ mv = &ff_mv_tables[0];
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+ INIT_VLC_STATIC(&mv->vlc, MV_VLC_BITS, mv->n + 1,
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+ mv->table_mv_bits, 1, 1,
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+ mv->table_mv_code, 2, 2, 3714);
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+ mv = &ff_mv_tables[1];
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+ INIT_VLC_STATIC(&mv->vlc, MV_VLC_BITS, mv->n + 1,
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+ mv->table_mv_bits, 1, 1,
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+ mv->table_mv_code, 2, 2, 2694);
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+
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+ INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[0], DC_VLC_BITS, 120,
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+ &ff_table0_dc_lum[0][1], 8, 4,
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+ &ff_table0_dc_lum[0][0], 8, 4, 1158);
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+ INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[0], DC_VLC_BITS, 120,
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+ &ff_table0_dc_chroma[0][1], 8, 4,
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+ &ff_table0_dc_chroma[0][0], 8, 4, 1118);
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+ INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[1], DC_VLC_BITS, 120,
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+ &ff_table1_dc_lum[0][1], 8, 4,
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+ &ff_table1_dc_lum[0][0], 8, 4, 1476);
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+ INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[1], DC_VLC_BITS, 120,
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+ &ff_table1_dc_chroma[0][1], 8, 4,
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+ &ff_table1_dc_chroma[0][0], 8, 4, 1216);
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+
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+ INIT_VLC_STATIC(&v2_dc_lum_vlc, DC_VLC_BITS, 512,
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+ &ff_v2_dc_lum_table[0][1], 8, 4,
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+ &ff_v2_dc_lum_table[0][0], 8, 4, 1472);
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+ INIT_VLC_STATIC(&v2_dc_chroma_vlc, DC_VLC_BITS, 512,
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+ &ff_v2_dc_chroma_table[0][1], 8, 4,
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+ &ff_v2_dc_chroma_table[0][0], 8, 4, 1506);
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+
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+ INIT_VLC_STATIC(&v2_intra_cbpc_vlc, V2_INTRA_CBPC_VLC_BITS, 4,
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+ &ff_v2_intra_cbpc[0][1], 2, 1,
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|
|
+ &ff_v2_intra_cbpc[0][0], 2, 1, 8);
|
|
|
+ INIT_VLC_STATIC(&v2_mb_type_vlc, V2_MB_TYPE_VLC_BITS, 8,
|
|
|
+ &ff_v2_mb_type[0][1], 2, 1,
|
|
|
+ &ff_v2_mb_type[0][0], 2, 1, 128);
|
|
|
+ INIT_VLC_STATIC(&v2_mv_vlc, V2_MV_VLC_BITS, 33,
|
|
|
+ &ff_mvtab[0][1], 2, 1,
|
|
|
+ &ff_mvtab[0][0], 2, 1, 538);
|
|
|
+
|
|
|
+ INIT_VLC_STATIC(&ff_mb_non_intra_vlc[0], MB_NON_INTRA_VLC_BITS, 128,
|
|
|
+ &ff_wmv2_inter_table[0][0][1], 8, 4,
|
|
|
+ &ff_wmv2_inter_table[0][0][0], 8, 4, 1636);
|
|
|
+ INIT_VLC_STATIC(&ff_mb_non_intra_vlc[1], MB_NON_INTRA_VLC_BITS, 128,
|
|
|
+ &ff_wmv2_inter_table[1][0][1], 8, 4,
|
|
|
+ &ff_wmv2_inter_table[1][0][0], 8, 4, 2648);
|
|
|
+ INIT_VLC_STATIC(&ff_mb_non_intra_vlc[2], MB_NON_INTRA_VLC_BITS, 128,
|
|
|
+ &ff_wmv2_inter_table[2][0][1], 8, 4,
|
|
|
+ &ff_wmv2_inter_table[2][0][0], 8, 4, 1532);
|
|
|
+ INIT_VLC_STATIC(&ff_mb_non_intra_vlc[3], MB_NON_INTRA_VLC_BITS, 128,
|
|
|
+ &ff_wmv2_inter_table[3][0][1], 8, 4,
|
|
|
+ &ff_wmv2_inter_table[3][0][0], 8, 4, 2488);
|
|
|
+
|
|
|
+ INIT_VLC_STATIC(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
|
|
|
+ &ff_msmp4_mb_i_table[0][1], 4, 2,
|
|
|
+ &ff_msmp4_mb_i_table[0][0], 4, 2, 536);
|
|
|
+
|
|
|
+ INIT_VLC_STATIC(&ff_inter_intra_vlc, INTER_INTRA_VLC_BITS, 4,
|
|
|
+ &ff_table_inter_intra[0][1], 2, 1,
|
|
|
+ &ff_table_inter_intra[0][0], 2, 1, 8);
|
|
|
+ done = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ switch(s->msmpeg4_version){
|
|
|
+ case 1:
|
|
|
+ case 2:
|
|
|
+ s->decode_mb= msmpeg4v12_decode_mb;
|
|
|
+ break;
|
|
|
+ case 3:
|
|
|
+ case 4:
|
|
|
+ s->decode_mb= msmpeg4v34_decode_mb;
|
|
|
+ break;
|
|
|
+ case 5:
|
|
|
+ if (CONFIG_WMV2_DECODER)
|
|
|
+ s->decode_mb= ff_wmv2_decode_mb;
|
|
|
+ case 6:
|
|
|
+ //FIXME + TODO VC1 decode mb
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ s->slice_height= s->mb_height; //to avoid 1/0 if the first frame is not a keyframe
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int ff_msmpeg4_decode_picture_header(MpegEncContext * s)
|
|
|
+{
|
|
|
+ int code;
|
|
|
+
|
|
|
+ if(s->msmpeg4_version==1){
|
|
|
+ int start_code = get_bits_long(&s->gb, 32);
|
|
|
+ if(start_code!=0x00000100){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "invalid startcode\n");
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ skip_bits(&s->gb, 5); // frame number */
|
|
|
+ }
|
|
|
+
|
|
|
+ s->pict_type = get_bits(&s->gb, 2) + 1;
|
|
|
+ if (s->pict_type != AV_PICTURE_TYPE_I &&
|
|
|
+ s->pict_type != AV_PICTURE_TYPE_P){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "invalid picture type\n");
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+#if 0
|
|
|
+{
|
|
|
+ static int had_i=0;
|
|
|
+ if(s->pict_type == AV_PICTURE_TYPE_I) had_i=1;
|
|
|
+ if(!had_i) return -1;
|
|
|
+}
|
|
|
+#endif
|
|
|
+ s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
|
|
|
+ if(s->qscale==0){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "invalid qscale\n");
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (s->pict_type == AV_PICTURE_TYPE_I) {
|
|
|
+ code = get_bits(&s->gb, 5);
|
|
|
+ if(s->msmpeg4_version==1){
|
|
|
+ if(code==0 || code>s->mb_height){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "invalid slice height %d\n", code);
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ s->slice_height = code;
|
|
|
+ }else{
|
|
|
+ /* 0x17: one slice, 0x18: two slices, ... */
|
|
|
+ if (code < 0x17){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "error, slice code was %X\n", code);
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ s->slice_height = s->mb_height / (code - 0x16);
|
|
|
+ }
|
|
|
+
|
|
|
+ switch(s->msmpeg4_version){
|
|
|
+ case 1:
|
|
|
+ case 2:
|
|
|
+ s->rl_chroma_table_index = 2;
|
|
|
+ s->rl_table_index = 2;
|
|
|
+
|
|
|
+ s->dc_table_index = 0; //not used
|
|
|
+ break;
|
|
|
+ case 3:
|
|
|
+ s->rl_chroma_table_index = decode012(&s->gb);
|
|
|
+ s->rl_table_index = decode012(&s->gb);
|
|
|
+
|
|
|
+ s->dc_table_index = get_bits1(&s->gb);
|
|
|
+ break;
|
|
|
+ case 4:
|
|
|
+ ff_msmpeg4_decode_ext_header(s, (2+5+5+17+7)/8);
|
|
|
+
|
|
|
+ if(s->bit_rate > MBAC_BITRATE) s->per_mb_rl_table= get_bits1(&s->gb);
|
|
|
+ else s->per_mb_rl_table= 0;
|
|
|
+
|
|
|
+ if(!s->per_mb_rl_table){
|
|
|
+ s->rl_chroma_table_index = decode012(&s->gb);
|
|
|
+ s->rl_table_index = decode012(&s->gb);
|
|
|
+ }
|
|
|
+
|
|
|
+ s->dc_table_index = get_bits1(&s->gb);
|
|
|
+ s->inter_intra_pred= 0;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ s->no_rounding = 1;
|
|
|
+ if(s->avctx->debug&FF_DEBUG_PICT_INFO)
|
|
|
+ av_log(s->avctx, AV_LOG_DEBUG, "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d slice:%d \n",
|
|
|
+ s->qscale,
|
|
|
+ s->rl_chroma_table_index,
|
|
|
+ s->rl_table_index,
|
|
|
+ s->dc_table_index,
|
|
|
+ s->per_mb_rl_table,
|
|
|
+ s->slice_height);
|
|
|
+ } else {
|
|
|
+ switch(s->msmpeg4_version){
|
|
|
+ case 1:
|
|
|
+ case 2:
|
|
|
+ if(s->msmpeg4_version==1)
|
|
|
+ s->use_skip_mb_code = 1;
|
|
|
+ else
|
|
|
+ s->use_skip_mb_code = get_bits1(&s->gb);
|
|
|
+ s->rl_table_index = 2;
|
|
|
+ s->rl_chroma_table_index = s->rl_table_index;
|
|
|
+ s->dc_table_index = 0; //not used
|
|
|
+ s->mv_table_index = 0;
|
|
|
+ break;
|
|
|
+ case 3:
|
|
|
+ s->use_skip_mb_code = get_bits1(&s->gb);
|
|
|
+ s->rl_table_index = decode012(&s->gb);
|
|
|
+ s->rl_chroma_table_index = s->rl_table_index;
|
|
|
+
|
|
|
+ s->dc_table_index = get_bits1(&s->gb);
|
|
|
+
|
|
|
+ s->mv_table_index = get_bits1(&s->gb);
|
|
|
+ break;
|
|
|
+ case 4:
|
|
|
+ s->use_skip_mb_code = get_bits1(&s->gb);
|
|
|
+
|
|
|
+ if(s->bit_rate > MBAC_BITRATE) s->per_mb_rl_table= get_bits1(&s->gb);
|
|
|
+ else s->per_mb_rl_table= 0;
|
|
|
+
|
|
|
+ if(!s->per_mb_rl_table){
|
|
|
+ s->rl_table_index = decode012(&s->gb);
|
|
|
+ s->rl_chroma_table_index = s->rl_table_index;
|
|
|
+ }
|
|
|
+
|
|
|
+ s->dc_table_index = get_bits1(&s->gb);
|
|
|
+
|
|
|
+ s->mv_table_index = get_bits1(&s->gb);
|
|
|
+ s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(s->avctx->debug&FF_DEBUG_PICT_INFO)
|
|
|
+ av_log(s->avctx, AV_LOG_DEBUG, "skip:%d rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d \n",
|
|
|
+ s->use_skip_mb_code,
|
|
|
+ s->rl_table_index,
|
|
|
+ s->rl_chroma_table_index,
|
|
|
+ s->dc_table_index,
|
|
|
+ s->mv_table_index,
|
|
|
+ s->per_mb_rl_table,
|
|
|
+ s->qscale);
|
|
|
+
|
|
|
+ if(s->flipflop_rounding){
|
|
|
+ s->no_rounding ^= 1;
|
|
|
+ }else{
|
|
|
+ s->no_rounding = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ av_dlog(s->avctx, "%d %d %d %d %d\n", s->pict_type, s->bit_rate,
|
|
|
+ s->inter_intra_pred, s->width, s->height);
|
|
|
+
|
|
|
+ s->esc3_level_length= 0;
|
|
|
+ s->esc3_run_length= 0;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size)
|
|
|
+{
|
|
|
+ int left= buf_size*8 - get_bits_count(&s->gb);
|
|
|
+ int length= s->msmpeg4_version>=3 ? 17 : 16;
|
|
|
+ /* the alt_bitstream reader could read over the end so we need to check it */
|
|
|
+ if(left>=length && left<length+8)
|
|
|
+ {
|
|
|
+ skip_bits(&s->gb, 5); /* fps */
|
|
|
+ s->bit_rate= get_bits(&s->gb, 11)*1024;
|
|
|
+ if(s->msmpeg4_version>=3)
|
|
|
+ s->flipflop_rounding= get_bits1(&s->gb);
|
|
|
+ else
|
|
|
+ s->flipflop_rounding= 0;
|
|
|
+ }
|
|
|
+ else if(left<length+8)
|
|
|
+ {
|
|
|
+ s->flipflop_rounding= 0;
|
|
|
+ if(s->msmpeg4_version != 2)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "ext header missing, %d left\n", left);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "I frame too long, ignoring ext header\n");
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
|
|
|
+{
|
|
|
+ int level, pred;
|
|
|
+
|
|
|
+ if(s->msmpeg4_version<=2){
|
|
|
+ if (n < 4) {
|
|
|
+ level = get_vlc2(&s->gb, v2_dc_lum_vlc.table, DC_VLC_BITS, 3);
|
|
|
+ } else {
|
|
|
+ level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, DC_VLC_BITS, 3);
|
|
|
+ }
|
|
|
+ if (level < 0)
|
|
|
+ return -1;
|
|
|
+ level-=256;
|
|
|
+ }else{ //FIXME optimize use unified tables & index
|
|
|
+ if (n < 4) {
|
|
|
+ level = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
|
+ } else {
|
|
|
+ level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
|
+ }
|
|
|
+ if (level < 0){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n");
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (level == DC_MAX) {
|
|
|
+ level = get_bits(&s->gb, 8);
|
|
|
+ if (get_bits1(&s->gb))
|
|
|
+ level = -level;
|
|
|
+ } else if (level != 0) {
|
|
|
+ if (get_bits1(&s->gb))
|
|
|
+ level = -level;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if(s->msmpeg4_version==1){
|
|
|
+ int32_t *dc_val;
|
|
|
+ pred = msmpeg4v1_pred_dc(s, n, &dc_val);
|
|
|
+ level += pred;
|
|
|
+
|
|
|
+ /* update predictor */
|
|
|
+ *dc_val= level;
|
|
|
+ }else{
|
|
|
+ int16_t *dc_val;
|
|
|
+ pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
|
|
|
+ level += pred;
|
|
|
+
|
|
|
+ /* update predictor */
|
|
|
+ if (n < 4) {
|
|
|
+ *dc_val = level * s->y_dc_scale;
|
|
|
+ } else {
|
|
|
+ *dc_val = level * s->c_dc_scale;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return level;
|
|
|
+}
|
|
|
+
|
|
|
+//#define ERROR_DETAILS
|
|
|
+int ff_msmpeg4_decode_block(MpegEncContext * s, int16_t * block,
|
|
|
+ int n, int coded, const uint8_t *scan_table)
|
|
|
+{
|
|
|
+ int level, i, last, run, run_diff;
|
|
|
+ int av_uninit(dc_pred_dir);
|
|
|
+ RLTable *rl;
|
|
|
+ RL_VLC_ELEM *rl_vlc;
|
|
|
+ int qmul, qadd;
|
|
|
+
|
|
|
+ if (s->mb_intra) {
|
|
|
+ qmul=1;
|
|
|
+ qadd=0;
|
|
|
+
|
|
|
+ /* DC coef */
|
|
|
+ level = msmpeg4_decode_dc(s, n, &dc_pred_dir);
|
|
|
+
|
|
|
+ if (level < 0){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "dc overflow- block: %d qscale: %d//\n", n, s->qscale);
|
|
|
+ if(s->inter_intra_pred) level=0;
|
|
|
+ else return -1;
|
|
|
+ }
|
|
|
+ if (n < 4) {
|
|
|
+ rl = &ff_rl_table[s->rl_table_index];
|
|
|
+ if(level > 256*s->y_dc_scale){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "dc overflow+ L qscale: %d//\n", s->qscale);
|
|
|
+ if(!s->inter_intra_pred) return -1;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ rl = &ff_rl_table[3 + s->rl_chroma_table_index];
|
|
|
+ if(level > 256*s->c_dc_scale){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "dc overflow+ C qscale: %d//\n", s->qscale);
|
|
|
+ if(!s->inter_intra_pred) return -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ block[0] = level;
|
|
|
+
|
|
|
+ run_diff = s->msmpeg4_version >= 4;
|
|
|
+ i = 0;
|
|
|
+ if (!coded) {
|
|
|
+ goto not_coded;
|
|
|
+ }
|
|
|
+ if (s->ac_pred) {
|
|
|
+ if (dc_pred_dir == 0)
|
|
|
+ scan_table = s->intra_v_scantable.permutated; /* left */
|
|
|
+ else
|
|
|
+ scan_table = s->intra_h_scantable.permutated; /* top */
|
|
|
+ } else {
|
|
|
+ scan_table = s->intra_scantable.permutated;
|
|
|
+ }
|
|
|
+ rl_vlc= rl->rl_vlc[0];
|
|
|
+ } else {
|
|
|
+ qmul = s->qscale << 1;
|
|
|
+ qadd = (s->qscale - 1) | 1;
|
|
|
+ i = -1;
|
|
|
+ rl = &ff_rl_table[3 + s->rl_table_index];
|
|
|
+
|
|
|
+ if(s->msmpeg4_version==2)
|
|
|
+ run_diff = 0;
|
|
|
+ else
|
|
|
+ run_diff = 1;
|
|
|
+
|
|
|
+ if (!coded) {
|
|
|
+ s->block_last_index[n] = i;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ if(!scan_table)
|
|
|
+ scan_table = s->inter_scantable.permutated;
|
|
|
+ rl_vlc= rl->rl_vlc[s->qscale];
|
|
|
+ }
|
|
|
+ {
|
|
|
+ OPEN_READER(re, &s->gb);
|
|
|
+ for(;;) {
|
|
|
+ UPDATE_CACHE(re, &s->gb);
|
|
|
+ GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 0);
|
|
|
+ if (level==0) {
|
|
|
+ int cache;
|
|
|
+ cache= GET_CACHE(re, &s->gb);
|
|
|
+ /* escape */
|
|
|
+ if (s->msmpeg4_version==1 || (cache&0x80000000)==0) {
|
|
|
+ if (s->msmpeg4_version==1 || (cache&0x40000000)==0) {
|
|
|
+ /* third escape */
|
|
|
+ if(s->msmpeg4_version!=1) LAST_SKIP_BITS(re, &s->gb, 2);
|
|
|
+ UPDATE_CACHE(re, &s->gb);
|
|
|
+ if(s->msmpeg4_version<=3){
|
|
|
+ last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1);
|
|
|
+ run= SHOW_UBITS(re, &s->gb, 6); SKIP_CACHE(re, &s->gb, 6);
|
|
|
+ level= SHOW_SBITS(re, &s->gb, 8);
|
|
|
+ SKIP_COUNTER(re, &s->gb, 1+6+8);
|
|
|
+ }else{
|
|
|
+ int sign;
|
|
|
+ last= SHOW_UBITS(re, &s->gb, 1); SKIP_BITS(re, &s->gb, 1);
|
|
|
+ if(!s->esc3_level_length){
|
|
|
+ int ll;
|
|
|
+ av_dlog(s->avctx, "ESC-3 %X at %d %d\n",
|
|
|
+ show_bits(&s->gb, 24), s->mb_x, s->mb_y);
|
|
|
+ if(s->qscale<8){
|
|
|
+ ll= SHOW_UBITS(re, &s->gb, 3); SKIP_BITS(re, &s->gb, 3);
|
|
|
+ if(ll==0){
|
|
|
+ ll= 8+SHOW_UBITS(re, &s->gb, 1); SKIP_BITS(re, &s->gb, 1);
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ ll=2;
|
|
|
+ while(ll<8 && SHOW_UBITS(re, &s->gb, 1)==0){
|
|
|
+ ll++;
|
|
|
+ SKIP_BITS(re, &s->gb, 1);
|
|
|
+ }
|
|
|
+ if(ll<8) SKIP_BITS(re, &s->gb, 1);
|
|
|
+ }
|
|
|
+
|
|
|
+ s->esc3_level_length= ll;
|
|
|
+ s->esc3_run_length= SHOW_UBITS(re, &s->gb, 2) + 3; SKIP_BITS(re, &s->gb, 2);
|
|
|
+ UPDATE_CACHE(re, &s->gb);
|
|
|
+ }
|
|
|
+ run= SHOW_UBITS(re, &s->gb, s->esc3_run_length);
|
|
|
+ SKIP_BITS(re, &s->gb, s->esc3_run_length);
|
|
|
+
|
|
|
+ sign= SHOW_UBITS(re, &s->gb, 1);
|
|
|
+ SKIP_BITS(re, &s->gb, 1);
|
|
|
+
|
|
|
+ level= SHOW_UBITS(re, &s->gb, s->esc3_level_length);
|
|
|
+ SKIP_BITS(re, &s->gb, s->esc3_level_length);
|
|
|
+ if(sign) level= -level;
|
|
|
+ }
|
|
|
+
|
|
|
+#if 0 // waste of time / this will detect very few errors
|
|
|
+ {
|
|
|
+ const int abs_level= FFABS(level);
|
|
|
+ const int run1= run - rl->max_run[last][abs_level] - run_diff;
|
|
|
+ if(abs_level<=MAX_LEVEL && run<=MAX_RUN){
|
|
|
+ if(abs_level <= rl->max_level[last][run]){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, vlc encoding possible\n");
|
|
|
+ return DECODING_AC_LOST;
|
|
|
+ }
|
|
|
+ if(abs_level <= rl->max_level[last][run]*2){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, esc 1 encoding possible\n");
|
|
|
+ return DECODING_AC_LOST;
|
|
|
+ }
|
|
|
+ if(run1>=0 && abs_level <= rl->max_level[last][run1]){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, esc 2 encoding possible\n");
|
|
|
+ return DECODING_AC_LOST;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ //level = level * qmul + (level>0) * qadd - (level<=0) * qadd ;
|
|
|
+ if (level>0) level= level * qmul + qadd;
|
|
|
+ else level= level * qmul - qadd;
|
|
|
+#if 0 // waste of time too :(
|
|
|
+ if(level>2048 || level<-2048){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "|level| overflow in 3. esc\n");
|
|
|
+ return DECODING_AC_LOST;
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ i+= run + 1;
|
|
|
+ if(last) i+=192;
|
|
|
+#ifdef ERROR_DETAILS
|
|
|
+ if(run==66)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code in ESC3 level=%d\n", level);
|
|
|
+ else if((i>62 && i<192) || i>192+63)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "run overflow in ESC3 i=%d run=%d level=%d\n", i, run, level);
|
|
|
+#endif
|
|
|
+ } else {
|
|
|
+ /* second escape */
|
|
|
+ SKIP_BITS(re, &s->gb, 2);
|
|
|
+ GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
|
|
|
+ i+= run + rl->max_run[run>>7][level/qmul] + run_diff; //FIXME opt indexing
|
|
|
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
|
|
|
+ LAST_SKIP_BITS(re, &s->gb, 1);
|
|
|
+#ifdef ERROR_DETAILS
|
|
|
+ if(run==66)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code in ESC2 level=%d\n", level);
|
|
|
+ else if((i>62 && i<192) || i>192+63)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "run overflow in ESC2 i=%d run=%d level=%d\n", i, run, level);
|
|
|
+#endif
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* first escape */
|
|
|
+ SKIP_BITS(re, &s->gb, 1);
|
|
|
+ GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
|
|
|
+ i+= run;
|
|
|
+ level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing
|
|
|
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
|
|
|
+ LAST_SKIP_BITS(re, &s->gb, 1);
|
|
|
+#ifdef ERROR_DETAILS
|
|
|
+ if(run==66)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code in ESC1 level=%d\n", level);
|
|
|
+ else if((i>62 && i<192) || i>192+63)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "run overflow in ESC1 i=%d run=%d level=%d\n", i, run, level);
|
|
|
+#endif
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ i+= run;
|
|
|
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
|
|
|
+ LAST_SKIP_BITS(re, &s->gb, 1);
|
|
|
+#ifdef ERROR_DETAILS
|
|
|
+ if(run==66)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code level=%d\n", level);
|
|
|
+ else if((i>62 && i<192) || i>192+63)
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "run overflow i=%d run=%d level=%d\n", i, run, level);
|
|
|
+#endif
|
|
|
+ }
|
|
|
+ if (i > 62){
|
|
|
+ i-= 192;
|
|
|
+ if(i&(~63)){
|
|
|
+ const int left= get_bits_left(&s->gb);
|
|
|
+ if(((i+192 == 64 && level/qmul==-1) || !(s->err_recognition&(AV_EF_BITSTREAM|AV_EF_COMPLIANT))) && left>=0){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "ignoring overflow at %d %d\n", s->mb_x, s->mb_y);
|
|
|
+ i = 63;
|
|
|
+ break;
|
|
|
+ }else{
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ block[scan_table[i]] = level;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ block[scan_table[i]] = level;
|
|
|
+ }
|
|
|
+ CLOSE_READER(re, &s->gb);
|
|
|
+ }
|
|
|
+ not_coded:
|
|
|
+ if (s->mb_intra) {
|
|
|
+ ff_mpeg4_pred_ac(s, block, n, dc_pred_dir);
|
|
|
+ if (s->ac_pred) {
|
|
|
+ i = 63; /* XXX: not optimal */
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if(s->msmpeg4_version>=4 && i>0) i=63; //FIXME/XXX optimize
|
|
|
+ s->block_last_index[n] = i;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int ff_msmpeg4_decode_motion(MpegEncContext * s,
|
|
|
+ int *mx_ptr, int *my_ptr)
|
|
|
+{
|
|
|
+ MVTable *mv;
|
|
|
+ int code, mx, my;
|
|
|
+
|
|
|
+ mv = &ff_mv_tables[s->mv_table_index];
|
|
|
+
|
|
|
+ code = get_vlc2(&s->gb, mv->vlc.table, MV_VLC_BITS, 2);
|
|
|
+ if (code < 0){
|
|
|
+ av_log(s->avctx, AV_LOG_ERROR, "illegal MV code at %d %d\n", s->mb_x, s->mb_y);
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ if (code == mv->n) {
|
|
|
+ mx = get_bits(&s->gb, 6);
|
|
|
+ my = get_bits(&s->gb, 6);
|
|
|
+ } else {
|
|
|
+ mx = mv->table_mvx[code];
|
|
|
+ my = mv->table_mvy[code];
|
|
|
+ }
|
|
|
+
|
|
|
+ mx += *mx_ptr - 32;
|
|
|
+ my += *my_ptr - 32;
|
|
|
+ /* WARNING : they do not do exactly modulo encoding */
|
|
|
+ if (mx <= -64)
|
|
|
+ mx += 64;
|
|
|
+ else if (mx >= 64)
|
|
|
+ mx -= 64;
|
|
|
+
|
|
|
+ if (my <= -64)
|
|
|
+ my += 64;
|
|
|
+ else if (my >= 64)
|
|
|
+ my -= 64;
|
|
|
+ *mx_ptr = mx;
|
|
|
+ *my_ptr = my;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+AVCodec ff_msmpeg4v1_decoder = {
|
|
|
+ .name = "msmpeg4v1",
|
|
|
+ .type = AVMEDIA_TYPE_VIDEO,
|
|
|
+ .id = AV_CODEC_ID_MSMPEG4V1,
|
|
|
+ .priv_data_size = sizeof(MpegEncContext),
|
|
|
+ .init = ff_msmpeg4_decode_init,
|
|
|
+ .close = ff_h263_decode_end,
|
|
|
+ .decode = ff_h263_decode_frame,
|
|
|
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
|
|
+ .max_lowres = 3,
|
|
|
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
|
|
|
+ .pix_fmts = ff_pixfmt_list_420,
|
|
|
+};
|
|
|
+
|
|
|
+AVCodec ff_msmpeg4v2_decoder = {
|
|
|
+ .name = "msmpeg4v2",
|
|
|
+ .type = AVMEDIA_TYPE_VIDEO,
|
|
|
+ .id = AV_CODEC_ID_MSMPEG4V2,
|
|
|
+ .priv_data_size = sizeof(MpegEncContext),
|
|
|
+ .init = ff_msmpeg4_decode_init,
|
|
|
+ .close = ff_h263_decode_end,
|
|
|
+ .decode = ff_h263_decode_frame,
|
|
|
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
|
|
+ .max_lowres = 3,
|
|
|
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
|
|
|
+ .pix_fmts = ff_pixfmt_list_420,
|
|
|
+};
|
|
|
+
|
|
|
+AVCodec ff_msmpeg4v3_decoder = {
|
|
|
+ .name = "msmpeg4",
|
|
|
+ .type = AVMEDIA_TYPE_VIDEO,
|
|
|
+ .id = AV_CODEC_ID_MSMPEG4V3,
|
|
|
+ .priv_data_size = sizeof(MpegEncContext),
|
|
|
+ .init = ff_msmpeg4_decode_init,
|
|
|
+ .close = ff_h263_decode_end,
|
|
|
+ .decode = ff_h263_decode_frame,
|
|
|
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
|
|
+ .max_lowres = 3,
|
|
|
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
|
|
|
+ .pix_fmts = ff_pixfmt_list_420,
|
|
|
+};
|
|
|
+
|
|
|
+AVCodec ff_wmv1_decoder = {
|
|
|
+ .name = "wmv1",
|
|
|
+ .type = AVMEDIA_TYPE_VIDEO,
|
|
|
+ .id = AV_CODEC_ID_WMV1,
|
|
|
+ .priv_data_size = sizeof(MpegEncContext),
|
|
|
+ .init = ff_msmpeg4_decode_init,
|
|
|
+ .close = ff_h263_decode_end,
|
|
|
+ .decode = ff_h263_decode_frame,
|
|
|
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
|
|
+ .max_lowres = 3,
|
|
|
+ .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
|
|
|
+ .pix_fmts = ff_pixfmt_list_420,
|
|
|
+};
|
Michael Niedermayer