* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
* Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef _SNOW_H
-#define _SNOW_H
+#ifndef AVCODEC_SNOW_H
+#define AVCODEC_SNOW_H
#include "dsputil.h"
+#include "dwt.h"
#define MID_STATE 128
-#define MAX_DECOMPOSITIONS 8
#define MAX_PLANES 4
#define QSHIFT 5
#define QROOT (1<<QSHIFT)
#define LOSSLESS_QLOG -128
-#define FRAC_BITS 8
+#define FRAC_BITS 4
#define MAX_REF_FRAMES 8
#define LOG2_OBMC_MAX 8
#define OBMC_MAX (1<<(LOG2_OBMC_MAX))
-#define DWT_97 0
-#define DWT_53 1
-#define DWT_X 2
-
-/** Used to minimize the amount of memory used in order to optimize cache performance. **/
-struct slice_buffer_s {
- DWTELEM * * line; ///< For use by idwt and predict_slices.
- DWTELEM * * data_stack; ///< Used for internal purposes.
- int data_stack_top;
- int line_count;
- int line_width;
- int data_count;
- DWTELEM * base_buffer; ///< Buffer that this structure is caching.
-};
-
-#define liftS lift
-#define lift5 lift
-#if 1
-#define W_AM 3
-#define W_AO 0
-#define W_AS 1
-
-#undef liftS
-#define W_BM 1
-#define W_BO 8
-#define W_BS 4
-
-#define W_CM 1
-#define W_CO 0
-#define W_CS 0
-
-#define W_DM 3
-#define W_DO 4
-#define W_DS 3
-#elif 0
-#define W_AM 55
-#define W_AO 16
-#define W_AS 5
-
-#define W_BM 3
-#define W_BO 32
-#define W_BS 6
-
-#define W_CM 127
-#define W_CO 64
-#define W_CS 7
-
-#define W_DM 7
-#define W_DO 8
-#define W_DS 4
-#elif 0
-#define W_AM 97
-#define W_AO 32
-#define W_AS 6
-
-#define W_BM 63
-#define W_BO 512
-#define W_BS 10
-
-#define W_CM 13
-#define W_CO 8
-#define W_CS 4
-
-#define W_DM 15
-#define W_DO 16
-#define W_DS 5
-
-#else
-
-#define W_AM 203
-#define W_AO 64
-#define W_AS 7
-
-#define W_BM 217
-#define W_BO 2048
-#define W_BS 12
-
-#define W_CM 113
-#define W_CO 64
-#define W_CS 7
-
-#define W_DM 227
-#define W_DO 128
-#define W_DS 9
-#endif
-
-extern void ff_snow_vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width);
-extern void ff_snow_horizontal_compose97i(DWTELEM *b, int width);
-extern void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8);
-
-#ifdef CONFIG_SNOW_ENCODER
-int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
-int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
-#else
-static int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0);}
-static int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0);}
-#endif
-
/* C bits used by mmx/sse2/altivec */
-static av_always_inline void snow_interleave_line_header(int * i, int width, DWTELEM * low, DWTELEM * high){
+static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
(*i) = (width) - 2;
if (width & 1){
}
}
-static av_always_inline void snow_interleave_line_footer(int * i, DWTELEM * low, DWTELEM * high){
+static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){
for (; (*i)>=0; (*i)-=2){
low[(*i)+1] = high[(*i)>>1];
low[*i] = low[(*i)>>1];
}
}
-static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
+static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
for(; i<w; i++){
dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
}
}
}
-static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w){
+static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w){
for(; i<w; i++){
- dst[i] = src[i] - (((-(ref[i] + ref[(i+1)])+W_BO) - 4 * src[i]) >> W_BS);
+ dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
}
if(width&1){
- dst[w] = src[w] - (((-2 * ref[w] + W_BO) - 4 * src[w]) >> W_BS);
+ dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
}
}
-#endif
+#endif /* AVCODEC_SNOW_H */
projects / ffmpeg / blobdiff