libavcodec/arm/mpegvideo_arm.c
Go to the documentation of this file.
00001 /*
00002  * Copyright (c) 2002 Michael Niedermayer
00003  *
00004  * This file is part of Libav.
00005  *
00006  * Libav is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * Libav is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with Libav; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #include "libavcodec/avcodec.h"
00022 #include "libavcodec/dsputil.h"
00023 #include "libavcodec/mpegvideo.h"
00024 #include "mpegvideo_arm.h"
00025 #include "asm-offsets.h"
00026 
00027 #if HAVE_NEON
00028 CHK_OFFS(MpegEncContext, y_dc_scale,       Y_DC_SCALE);
00029 CHK_OFFS(MpegEncContext, c_dc_scale,       C_DC_SCALE);
00030 CHK_OFFS(MpegEncContext, ac_pred,          AC_PRED);
00031 CHK_OFFS(MpegEncContext, block_last_index, BLOCK_LAST_INDEX);
00032 CHK_OFFS(MpegEncContext, inter_scantable.raster_end, INTER_SCANTAB_RASTER_END);
00033 CHK_OFFS(MpegEncContext, h263_aic,         H263_AIC);
00034 #endif
00035 
00036 void ff_dct_unquantize_h263_inter_neon(MpegEncContext *s, DCTELEM *block,
00037                                        int n, int qscale);
00038 void ff_dct_unquantize_h263_intra_neon(MpegEncContext *s, DCTELEM *block,
00039                                        int n, int qscale);
00040 
00041 void MPV_common_init_arm(MpegEncContext *s)
00042 {
00043     /* IWMMXT support is a superset of armv5te, so
00044      * allow optimized functions for armv5te unless
00045      * a better iwmmxt function exists
00046      */
00047 #if HAVE_ARMV5TE
00048     MPV_common_init_armv5te(s);
00049 #endif
00050 #if HAVE_IWMMXT
00051     MPV_common_init_iwmmxt(s);
00052 #endif
00053 
00054     if (HAVE_NEON) {
00055         s->dct_unquantize_h263_intra = ff_dct_unquantize_h263_intra_neon;
00056         s->dct_unquantize_h263_inter = ff_dct_unquantize_h263_inter_neon;
00057     }
00058 }