mirror of
https://github.com/videolan/vlc.git
synced 2024-12-13 03:33:54 +08:00
19ea8feb6d
waveout, directx, qnx, beos, win32, macosx, and the AltiVec modules.
* ALL: removed mention of AC3 in favour of A52.
* ./configure.in, ./Makefile*: modules can now be built deeper than 1
directory. As a consequence, the build is even slower (but I'm fixing
this) and make clean doesn't work anymore.
151 lines
6.3 KiB
C
151 lines
6.3 KiB
C
/*****************************************************************************
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* i420_ymga.c : YUV to YUV conversion module for vlc
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*****************************************************************************
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* Copyright (C) 2000, 2001 VideoLAN
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* $Id: i420_ymga.c,v 1.1 2002/08/04 17:23:43 sam Exp $
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*
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* Authors: Samuel Hocevar <sam@zoy.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <errno.h> /* ENOMEM */
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#include <string.h> /* strerror() */
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#include <stdlib.h> /* malloc(), free() */
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#include <vlc/vlc.h>
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#include <vlc/vout.h>
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#define SRC_FOURCC "I420,IYUV,YV12"
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#define DEST_FOURCC "YMGA"
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/*****************************************************************************
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* Local and extern prototypes.
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*****************************************************************************/
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static int Activate ( vlc_object_t * );
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static void I420_YMGA ( vout_thread_t *, picture_t *, picture_t * );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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vlc_module_begin();
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#if defined (MODULE_NAME_IS_i420_ymga)
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set_description( _("conversions from " SRC_FOURCC " to " DEST_FOURCC) );
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set_capability( "chroma", 80 );
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#elif defined (MODULE_NAME_IS_i420_ymga_mmx)
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set_description( _("MMX conversions from " SRC_FOURCC " to " DEST_FOURCC) );
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set_capability( "chroma", 100 );
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add_requirement( MMX );
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#endif
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set_callbacks( Activate, NULL );
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vlc_module_end();
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/*****************************************************************************
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* Activate: allocate a chroma function
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*****************************************************************************
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* This function allocates and initializes a chroma function
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*****************************************************************************/
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static int Activate( vlc_object_t *p_this )
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{
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vout_thread_t *p_vout = (vout_thread_t *)p_this;
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if( p_vout->render.i_width & 1 || p_vout->render.i_height & 1 )
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{
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return -1;
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}
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switch( p_vout->render.i_chroma )
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{
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case VLC_FOURCC('Y','V','1','2'):
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case VLC_FOURCC('I','4','2','0'):
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case VLC_FOURCC('I','Y','U','V'):
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switch( p_vout->output.i_chroma )
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{
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case VLC_FOURCC('Y','M','G','A'):
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p_vout->chroma.pf_convert = I420_YMGA;
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break;
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default:
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return -1;
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}
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break;
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default:
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return -1;
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}
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return 0;
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}
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/* Following functions are local */
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/*****************************************************************************
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* I420_YMGA: planar YUV 4:2:0 to Matrox's planar/packed YUV 4:2:0
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*****************************************************************************/
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static void I420_YMGA( vout_thread_t *p_vout, picture_t *p_source,
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picture_t *p_dest )
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{
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u8 *p_uv = p_dest->U_PIXELS;
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u8 *p_u = p_source->U_PIXELS;
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u8 *p_v = p_source->V_PIXELS;
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int i_x;
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/* Copy the Y part */
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p_vout->p_vlc->pf_memcpy( p_dest->Y_PIXELS, p_source->Y_PIXELS,
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p_dest->p[Y_PLANE].i_pitch * p_dest->p[Y_PLANE].i_lines );
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/* Copy the U:V part */
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for( i_x = p_dest->p[U_PLANE].i_pitch * p_dest->p[U_PLANE].i_lines / 64;
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i_x--; )
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{
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#if defined (MODULE_NAME_IS_i420_ymga)
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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*p_uv++ = *p_u++; *p_uv++ = *p_v++; *p_uv++ = *p_u++; *p_uv++ = *p_v++;
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#else
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__asm__( ".align 32 \n\
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movd (%0), %%mm0 # Load 4 Cr 00 00 00 00 v3 v2 v1 v0 \n\
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movd 4(%0), %%mm2 # Load 4 Cr 00 00 00 00 v3 v2 v1 v0 \n\
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movd 8(%0), %%mm4 # Load 4 Cr 00 00 00 00 v3 v2 v1 v0 \n\
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movd 12(%0), %%mm6 # Load 4 Cr 00 00 00 00 v3 v2 v1 v0 \n\
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movd (%1), %%mm1 # Load 4 Cb 00 00 00 00 u3 u2 u1 u0 \n\
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movd 4(%1), %%mm3 # Load 4 Cb 00 00 00 00 u3 u2 u1 u0 \n\
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movd 8(%1), %%mm5 # Load 4 Cb 00 00 00 00 u3 u2 u1 u0 \n\
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movd 12(%1), %%mm7 # Load 4 Cb 00 00 00 00 u3 u2 u1 u0 \n\
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punpcklbw %%mm1, %%mm0 # u3 v3 u2 v2 u1 v1 u0 v0 \n\
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punpcklbw %%mm3, %%mm2 # u3 v3 u2 v2 u1 v1 u0 v0 \n\
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punpcklbw %%mm5, %%mm4 # u3 v3 u2 v2 u1 v1 u0 v0 \n\
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punpcklbw %%mm7, %%mm6 # u3 v3 u2 v2 u1 v1 u0 v0 \n\
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movq %%mm0, (%2) # Store CrCb \n\
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movq %%mm2, 8(%2) # Store CrCb \n\
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movq %%mm4, 16(%2) # Store CrCb \n\
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movq %%mm6, 24(%2) # Store CrCb"
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: : "r" (p_v), "r" (p_u), "r" (p_uv) );
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p_v += 16; p_u += 16; p_uv += 32;
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#endif
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}
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}
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