[SCM] libav/experimental: idct_permutation_type variable, so the permutation type can quickly be identified
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 15:33:45 UTC 2013
The following commit has been merged in the experimental branch:
commit 50eb9cbc44bb79f67188e77a734ce2d66644eb54
Author: Michael Niedermayer <michaelni at gmx.at>
Date: Fri Oct 25 13:39:47 2002 +0000
idct_permutation_type variable, so the permutation type can quickly be identified
Originally committed as revision 1071 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavcodec/armv4l/mpegvideo_arm.c b/libavcodec/armv4l/mpegvideo_arm.c
index d54bb7a..afb7a41 100644
--- a/libavcodec/armv4l/mpegvideo_arm.c
+++ b/libavcodec/armv4l/mpegvideo_arm.c
@@ -44,7 +44,6 @@ void MPV_common_init_armv4l(MpegEncContext *s)
if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_ARM){
s->idct_put= arm_idct_put;
s->idct_add= arm_idct_add;
- for(i=0; i<64; i++)
- s->idct_permutation[i]= i;
+ s->idct_permutation_type= FF_NO_IDCT_PERM;
}
}
diff --git a/libavcodec/i386/mpegvideo_mmx.c b/libavcodec/i386/mpegvideo_mmx.c
index 48d6fc5..8645fa3 100644
--- a/libavcodec/i386/mpegvideo_mmx.c
+++ b/libavcodec/i386/mpegvideo_mmx.c
@@ -25,18 +25,6 @@
#include "../avcodec.h"
#include "../simple_idct.h"
-/* Input permutation for the simple_idct_mmx */
-static UINT8 simple_mmx_permutation[64]={
- 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
- 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
- 0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
- 0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
- 0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
- 0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
- 0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
- 0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
-};
-
extern UINT8 zigzag_direct_noperm[64];
extern UINT16 inv_zigzag_direct16[64];
extern UINT32 inverse[256];
@@ -559,12 +547,11 @@ void MPV_common_init_mmx(MpegEncContext *s)
s->dct_quantize= dct_quantize_MMX;
}
}
-
+
if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SIMPLEMMX){
s->idct_put= ff_simple_idct_put_mmx;
s->idct_add= ff_simple_idct_add_mmx;
- for(i=0; i<64; i++)
- s->idct_permutation[i]= simple_mmx_permutation[i];
+ s->idct_permutation_type= FF_SIMPLE_IDCT_PERM;
}else if(idct_algo==FF_IDCT_LIBMPEG2MMX){
if(mm_flags & MM_MMXEXT){
s->idct_put= ff_libmpeg2mmx2_idct_put;
@@ -573,8 +560,7 @@ void MPV_common_init_mmx(MpegEncContext *s)
s->idct_put= ff_libmpeg2mmx_idct_put;
s->idct_add= ff_libmpeg2mmx_idct_add;
}
- for(i=0; i<64; i++)
- s->idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
+ s->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}
}
}
diff --git a/libavcodec/mlib/dsputil_mlib.c b/libavcodec/mlib/dsputil_mlib.c
index 00ffe1e..445500c 100644
--- a/libavcodec/mlib/dsputil_mlib.c
+++ b/libavcodec/mlib/dsputil_mlib.c
@@ -260,8 +260,6 @@ void MPV_common_init_mlib(MpegEncContext *s)
if(s->avctx->idct_algo==FF_IDCT_AUTO || s->avctx->idct_algo==FF_IDCT_MLIB){
s->idct_put= ff_idct_put_mlib;
s->idct_add= ff_idct_add_mlib;
- for(i=0; i<64; i++)
- s->idct_permutation[i]= i;
+ s->idct_permutation_type= FF_NO_IDCT_PERM;
}
-
}
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 1bf2cb4..2ec1ea3 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -69,6 +69,18 @@ static const unsigned short aanscales[64] = {
4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
};
+/* Input permutation for the simple_idct_mmx */
+static const UINT8 simple_mmx_permutation[64]={
+ 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
+ 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
+ 0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
+ 0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
+ 0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
+ 0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
+ 0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
+ 0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
+};
+
static UINT8 h263_chroma_roundtab[16] = {
0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
};
@@ -187,13 +199,11 @@ int DCT_common_init(MpegEncContext *s)
if(s->avctx->idct_algo==FF_IDCT_INT){
s->idct_put= ff_jref_idct_put;
s->idct_add= ff_jref_idct_add;
- for(i=0; i<64; i++)
- s->idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
+ s->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}else{ //accurate/default
s->idct_put= simple_idct_put;
s->idct_add= simple_idct_add;
- for(i=0; i<64; i++)
- s->idct_permutation[i]= i;
+ s->idct_permutation_type= FF_NO_IDCT_PERM;
}
#ifdef HAVE_MMX
@@ -212,6 +222,28 @@ int DCT_common_init(MpegEncContext *s)
MPV_common_init_armv4l();
#endif
+ switch(s->idct_permutation_type){
+ case FF_NO_IDCT_PERM:
+ for(i=0; i<64; i++)
+ s->idct_permutation[i]= i;
+ break;
+ case FF_LIBMPEG2_IDCT_PERM:
+ for(i=0; i<64; i++)
+ s->idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
+ break;
+ case FF_SIMPLE_IDCT_PERM:
+ for(i=0; i<64; i++)
+ s->idct_permutation[i]= simple_mmx_permutation[i];
+ break;
+ case FF_TRANSPOSE_IDCT_PERM:
+ for(i=0; i<64; i++)
+ s->idct_permutation[i]= ((i&7)<<3) | (i>>3);
+ break;
+ default:
+ fprintf(stderr, "Internal error, IDCT permutation not set\n");
+ return -1;
+ }
+
/* load & permutate scantables
note: only wmv uses differnt ones
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index dc5af27..28ef946 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -298,6 +298,11 @@ typedef struct MpegEncContext {
ScanTable intra_v_scantable;
ScanTable inter_scantable; // if inter == intra then intra should be used to reduce tha cache usage
UINT8 idct_permutation[64];
+ int idct_permutation_type;
+#define FF_NO_IDCT_PERM 1
+#define FF_LIBMPEG2_IDCT_PERM 2
+#define FF_SIMPLE_IDCT_PERM 3
+#define FF_TRANSPOSE_IDCT_PERM 4
void *opaque; /* private data for the user */
diff --git a/libavcodec/ps2/mpegvideo_mmi.c b/libavcodec/ps2/mpegvideo_mmi.c
index f12640c..322ac2c 100644
--- a/libavcodec/ps2/mpegvideo_mmi.c
+++ b/libavcodec/ps2/mpegvideo_mmi.c
@@ -85,14 +85,12 @@ static void dct_unquantize_h263_mmi(MpegEncContext *s,
void MPV_common_init_mmi(MpegEncContext *s)
{
int i;
-// const int dct_algo = s->avctx->dct_algo;
const int idct_algo= s->avctx->idct_algo;
- if(idct_algo==FF_IDCT_AUTO){
+ if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_PS2){
s->idct_put= ff_mmi_idct_put;
s->idct_add= ff_mmi_idct_add;
- for(i=0; i<64; i++)
- s->idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
+ s->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}
s->dct_unquantize_h263 = dct_unquantize_h263_mmi;
}
--
Libav/FFmpeg packaging
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