c_mlib.c

基于linux的DVD播放器程序

/* Ogle - A video player
 * Copyright (C) 2000, 2001 Martin Norb鋍k
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <inttypes.h>
#include "c_mlib.h"

static inline void
mlib_VideoCopyRefAve_U8_U8 (uint8_t *curr_block,
			    const uint8_t *ref_block,
                            const int width, const int height,
			    int32_t stride);
static inline void
mlib_VideoInterpAveX_U8_U8(uint8_t *curr_block, 
                           const uint8_t *ref_block,
                           const int width, int height,
                           int32_t frame_stride,   
                           int32_t field_stride);
static inline void
mlib_VideoInterpAveY_U8_U8(uint8_t *curr_block, 
                           const uint8_t *ref_block,
                           const int width, const int height,
                           int32_t frame_stride,   
                           int32_t field_stride);
static inline void
mlib_VideoInterpAveXY_U8_U8(uint8_t *curr_block, 
                            const uint8_t *ref_block, 
                            const int width, const int height,
                            int32_t frame_stride,   
                            int32_t field_stride);
static inline void
mlib_VideoInterpX_U8_U8(uint8_t *curr_block, 
			const uint8_t *ref_block,
			const int width, const int height,
			int32_t frame_stride,   
			int32_t field_stride);
static inline void
mlib_VideoInterpY_U8_U8(uint8_t *curr_block, 
			const uint8_t *ref_block,
			const int width, const int height,
			int32_t frame_stride,   
			int32_t field_stride);
static inline void
mlib_VideoInterpXY_U8_U8(uint8_t *curr_block, 
			 const uint8_t *ref_block, 
			 const int width, const int height,
			 int32_t frame_stride,   
			 int32_t field_stride);


static inline unsigned int
clip_to_u8 (int value)
{
  //return value < 0 ? 0 : (value > 255 ? 255 : value);
  //return ((uint16_t)value) > 256 ? value < 0 ? 0 : 255 : value;
  return ((unsigned)value) > 256 ? ( 255 & ~(value >> 31) ) : value;
}

void
mlib_Init(void)
{
}

inline void
mlib_VideoCopyRef_U8_U8 (uint8_t *curr_block,
                         const uint8_t *ref_block,
                         const int32_t width,
                         const int32_t height,
                         int32_t stride)
{
  int x, y;
  
  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = ref_block[x];
    ref_block += stride;
    curr_block += stride;
  }
}

static inline void
mlib_VideoCopyRefAve_U8_U8 (uint8_t *curr_block,
			    const uint8_t *ref_block,
			    const int width, const int height,
			    int32_t stride)
{
  int x, y;
  
  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = (curr_block[x] + ref_block[x] + 1U) / 2U;
    ref_block += stride;
    curr_block += stride;
  }
}

static inline void
mlib_VideoInterpAveX_U8_U8(uint8_t *curr_block, 
                           const uint8_t *ref_block,
                           const int width, const int height,
                           int32_t frame_stride,   
                           int32_t field_stride) 
{
  int x, y;

  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = (curr_block[x] +
		       ((ref_block[x] + ref_block[x+1] + 1U) / 2U) + 1U) / 2U;
    ref_block += frame_stride;
    curr_block += frame_stride;
  }
}

static inline void
mlib_VideoInterpAveY_U8_U8(uint8_t *curr_block, 
                           const uint8_t *ref_block,
                           const int width, const int height,
                           int32_t frame_stride,   
                           int32_t field_stride) 
{
  int x, y;
  const uint8_t *ref_block_next = ref_block + field_stride;

  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = (curr_block[x] + 
		       ((ref_block[x] + ref_block_next[x] + 1U) / 2U) + 1U) / 2U;
    curr_block     += frame_stride;
    ref_block      += frame_stride;
    ref_block_next += frame_stride;
  }
}

static inline void
mlib_VideoInterpAveXY_U8_U8(uint8_t *curr_block, 
                            const uint8_t *ref_block, 
                            const int width, const int height,
                            int32_t frame_stride,   
                            int32_t field_stride) 
{
  int x, y;
  const uint8_t *ref_block_next = ref_block + field_stride;

  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = (curr_block[x] + 
		       ((ref_block[x] + ref_block_next[x] +
			 ref_block[x+1] + ref_block_next[x+1] + 2U) / 4U) + 1U) / 2U;
    curr_block     += frame_stride;
    ref_block      += frame_stride;
    ref_block_next += frame_stride;
  }
}

static inline void
mlib_VideoInterpX_U8_U8(uint8_t *curr_block, 
			const uint8_t *ref_block,
			const int width, const int height,
			int32_t frame_stride,   
			int32_t field_stride) 
{
  int x, y;

  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = (ref_block[x] + ref_block[x+1] + 1U) / 2U;
    ref_block += frame_stride;
    curr_block += frame_stride;
  }
}

static inline void
mlib_VideoInterpY_U8_U8(uint8_t *curr_block, 
			const uint8_t *ref_block,
			const int width, const int height,
			int32_t frame_stride,   
			int32_t field_stride) 
{
  int x, y;
  const uint8_t *ref_block_next = ref_block + field_stride;

  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = (ref_block[x] + ref_block_next[x] + 1U) / 2U;
    curr_block     += frame_stride;
    ref_block      += frame_stride;
    ref_block_next += frame_stride;
  }
}

static inline void
mlib_VideoInterpXY_U8_U8(uint8_t *curr_block, 
			 const uint8_t *ref_block, 
			 const int width, const int height,
			 int32_t frame_stride,   
			 int32_t field_stride) 
{
  int x, y;
  const uint8_t *ref_block_next = ref_block + field_stride;

  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++)
      curr_block[x] = (ref_block[x] + ref_block_next[x] +
		       ref_block[x+1] + ref_block_next[x+1] + 2U) / 4U;
    curr_block     += frame_stride;
    ref_block      += frame_stride;
    ref_block_next += frame_stride;
  }
}

void
mlib_VideoCopyRefAve_U8_U8_16x16(uint8_t *curr_block,
                                 const uint8_t *ref_block,
                                 int32_t stride)
{
  mlib_VideoCopyRefAve_U8_U8 (curr_block, ref_block, 16, 16, stride);
}

void 
mlib_VideoCopyRefAve_U8_U8_16x8(uint8_t *curr_block,
				const uint8_t *ref_block,
				int32_t stride)
{
  mlib_VideoCopyRefAve_U8_U8 (curr_block, ref_block, 16, 8, stride);
}

void 
mlib_VideoCopyRefAve_U8_U8_8x8(uint8_t *curr_block,
			       const uint8_t *ref_block,
			       int32_t stride)
{
  mlib_VideoCopyRefAve_U8_U8 (curr_block, ref_block, 8, 8, stride);
}

void 
mlib_VideoCopyRefAve_U8_U8_8x4(uint8_t *curr_block,
			       const uint8_t *ref_block,
			       int32_t stride)
{
  mlib_VideoCopyRefAve_U8_U8 (curr_block, ref_block, 8, 4, stride);
}

void
mlib_VideoCopyRef_U8_U8_16x16(uint8_t *curr_block,
			      const uint8_t *ref_block,
			      int32_t stride)
{
  mlib_VideoCopyRef_U8_U8 (curr_block, ref_block, 16, 16, stride);
}

void 
mlib_VideoCopyRef_U8_U8_16x8(uint8_t *curr_block,
			     const uint8_t *ref_block,
			     int32_t stride)
{
  mlib_VideoCopyRef_U8_U8 (curr_block, ref_block, 16, 8, stride);
}

void 
mlib_VideoCopyRef_U8_U8_8x8(uint8_t *curr_block,
			    const uint8_t *ref_block,
			    int32_t stride)
{
  mlib_VideoCopyRef_U8_U8 (curr_block, ref_block, 8, 8, stride);
}

void 
mlib_VideoCopyRef_U8_U8_8x4(uint8_t *curr_block,
			    const uint8_t *ref_block,
			    int32_t stride)
{
  mlib_VideoCopyRef_U8_U8 (curr_block, ref_block, 8, 4, stride);
}

void
mlib_VideoInterpAveX_U8_U8_16x16(uint8_t *curr_block,
                                 const uint8_t *ref_block,
                                 int32_t frame_stride,
                                 int32_t field_stride)
{
  mlib_VideoInterpAveX_U8_U8 (curr_block, ref_block, 16, 16, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveX_U8_U8_16x8(uint8_t *curr_block,
				const uint8_t *ref_block,
				int32_t frame_stride,
				int32_t field_stride)
{
  mlib_VideoInterpAveX_U8_U8 (curr_block, ref_block, 16, 8, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveX_U8_U8_8x8(uint8_t *curr_block,
			       const uint8_t *ref_block,
			       int32_t frame_stride,
			       int32_t field_stride)
{
  mlib_VideoInterpAveX_U8_U8 (curr_block, ref_block, 8, 8, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveX_U8_U8_8x4(uint8_t *curr_block,
			       const uint8_t *ref_block,
			       int32_t frame_stride,
			       int32_t field_stride)
{
  mlib_VideoInterpAveX_U8_U8 (curr_block, ref_block, 8, 4, frame_stride, field_stride);
}

void
mlib_VideoInterpAveY_U8_U8_16x16(uint8_t *curr_block,
                                 const uint8_t *ref_block,
                                 int32_t frame_stride,
                                 int32_t field_stride)
{
  mlib_VideoInterpAveY_U8_U8 (curr_block, ref_block, 16, 16, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveY_U8_U8_16x8(uint8_t *curr_block,
				const uint8_t *ref_block,
				int32_t frame_stride,
				int32_t field_stride)
{
  mlib_VideoInterpAveY_U8_U8 (curr_block, ref_block, 16, 8, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveY_U8_U8_8x8(uint8_t *curr_block,
			       const uint8_t *ref_block,
			       int32_t frame_stride,
			       int32_t field_stride)
{
  mlib_VideoInterpAveY_U8_U8 (curr_block, ref_block, 8, 8, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveY_U8_U8_8x4(uint8_t *curr_block,
			       const uint8_t *ref_block,
			       int32_t frame_stride,
			       int32_t field_stride)
{
  mlib_VideoInterpAveY_U8_U8 (curr_block, ref_block, 8, 4, frame_stride, field_stride);
}

void
mlib_VideoInterpAveXY_U8_U8_16x16(uint8_t *curr_block,
				  const uint8_t *ref_block,
				  int32_t frame_stride,
				  int32_t field_stride)
{
  mlib_VideoInterpAveXY_U8_U8 (curr_block, ref_block, 16, 16, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveXY_U8_U8_16x8(uint8_t *curr_block,
                                 const uint8_t *ref_block,
                                 int32_t frame_stride,
                                 int32_t field_stride)
{
  mlib_VideoInterpAveXY_U8_U8 (curr_block, ref_block, 16, 8, frame_stride, field_stride);
}

void 
mlib_VideoInterpAveXY_U8_U8_8x8(uint8_t *curr_block,
				const uint8_t *ref_block,
				int32_t frame_stride,
				int32_t field_stride)
{
  mlib_VideoInterpAveXY_U8_U8 (curr_block, ref_block, 8, 8, frame_stride, field_stride);