From 669ac79cf52d68b39f4db26aab1e96f9190e1885 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 15 May 2003 23:30:03 +0000
Subject: moving the svq3 motion compensation stuff to dsputil (this also means
 that existing optimized halfpel code is used now ...)

Originally committed as revision 1885 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/dsputil.h | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'libavcodec/dsputil.h')

diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 0060d77dce..d43175e25b 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -77,6 +77,7 @@ void clear_blocks_c(DCTELEM *blocks);
 /* add and put pixel (decoding) */
 // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
 typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
+typedef void (*tpel_mc_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int w, int h);
 typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
 typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
 
@@ -146,18 +147,18 @@ typedef struct DSPContext {
     me_cmp_func me_sub_cmp[11];
     me_cmp_func mb_cmp[11];
 
-    /* maybe create an array for 16/8 functions */
+    /* maybe create an array for 16/8/4/2 functions */
     /**
      * Halfpel motion compensation with rounding (a+b+1)>>1.
-     * this is an array[2][4] of motion compensation funcions for 2 
-     * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
+     * this is an array[4][4] of motion compensation funcions for 4 
+     * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
      * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
      * @param block destination where the result is stored
      * @param pixels source
      * @param line_size number of bytes in a horizontal line of block
      * @param h height
      */
-    op_pixels_func put_pixels_tab[2][4];
+    op_pixels_func put_pixels_tab[4][4];
 
     /**
      * Halfpel motion compensation with rounding (a+b+1)>>1.
@@ -194,6 +195,18 @@ typedef struct DSPContext {
      * @param h height
      */
     op_pixels_func avg_no_rnd_pixels_tab[2][4];
+    
+    /**
+     * Thirdpel motion compensation with rounding (a+b+1)>>1.
+     * this is an array[12] of motion compensation funcions for the 9 thirdpel positions<br>
+     * *pixels_tab[ xthirdpel + 4*ythirdpel ]
+     * @param block destination where the result is stored
+     * @param pixels source
+     * @param line_size number of bytes in a horizontal line of block
+     * @param h height
+     */
+    tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
+    
     qpel_mc_func put_qpel_pixels_tab[2][16];
     qpel_mc_func avg_qpel_pixels_tab[2][16];
     qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
@@ -380,7 +393,9 @@ void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
 
 struct unaligned_64 { uint64_t l; } __attribute__((packed));
 struct unaligned_32 { uint32_t l; } __attribute__((packed));
+struct unaligned_16 { uint16_t l; } __attribute__((packed));
 
+#define LD16(a) (((const struct unaligned_16 *) (a))->l)
 #define LD32(a) (((const struct unaligned_32 *) (a))->l)
 #define LD64(a) (((const struct unaligned_64 *) (a))->l)
 
@@ -388,6 +403,7 @@ struct unaligned_32 { uint32_t l; } __attribute__((packed));
 
 #else /* __GNUC__ */
 
+#define LD16(a) (*((uint16_t*)(a)))
 #define LD32(a) (*((uint32_t*)(a)))
 #define LD64(a) (*((uint64_t*)(a)))
 
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