3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
35 typedef short DCTELEM;
36 //typedef int DCTELEM;
38 void fdct_ifast (DCTELEM *data);
39 void ff_jpeg_fdct_islow (DCTELEM *data);
41 void j_rev_dct (DCTELEM *data);
43 void ff_fdct_mmx(DCTELEM *block);
46 extern const uint8_t ff_alternate_horizontal_scan[64];
47 extern const uint8_t ff_alternate_vertical_scan[64];
48 extern const uint8_t ff_zigzag_direct[64];
50 /* pixel operations */
51 #define MAX_NEG_CROP 384
54 extern uint32_t squareTbl[512];
55 extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
58 /* minimum alignment rules ;)
59 if u notice errors in the align stuff, need more alignment for some asm code for some cpu
60 or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
62 !warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
63 i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
65 !future video codecs might need functions with less strict alignment
69 void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
70 void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
71 void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
72 void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
73 void clear_blocks_c(DCTELEM *blocks);
76 /* add and put pixel (decoding) */
77 // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
78 typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
79 typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
81 #define DEF_OLD_QPEL(name)\
82 void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
83 void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
84 void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
86 DEF_OLD_QPEL(qpel16_mc11_old_c)
87 DEF_OLD_QPEL(qpel16_mc31_old_c)
88 DEF_OLD_QPEL(qpel16_mc12_old_c)
89 DEF_OLD_QPEL(qpel16_mc32_old_c)
90 DEF_OLD_QPEL(qpel16_mc13_old_c)
91 DEF_OLD_QPEL(qpel16_mc33_old_c)
92 DEF_OLD_QPEL(qpel8_mc11_old_c)
93 DEF_OLD_QPEL(qpel8_mc31_old_c)
94 DEF_OLD_QPEL(qpel8_mc12_old_c)
95 DEF_OLD_QPEL(qpel8_mc32_old_c)
96 DEF_OLD_QPEL(qpel8_mc13_old_c)
97 DEF_OLD_QPEL(qpel8_mc33_old_c)
99 #define CALL_2X_PIXELS(a, b, n)\
100 static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
101 b(block , pixels , line_size, h);\
102 b(block+n, pixels+n, line_size, h);\
105 /* motion estimation */
107 typedef int (*op_pixels_abs_func)(uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
109 typedef int (*me_cmp_func)(void /*MpegEncContext*/ *s, uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
114 typedef struct DSPContext {
115 /* pixel ops : interface with DCT */
116 void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
117 void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
118 void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
119 void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
120 void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
121 void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
122 int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
123 void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
124 int (*pix_sum)(uint8_t * pix, int line_size);
125 int (*pix_norm1)(uint8_t * pix, int line_size);
126 me_cmp_func sad[2]; /* identical to pix_absAxA except additional void * */
128 me_cmp_func hadamard8_diff[2];
129 me_cmp_func dct_sad[2];
130 me_cmp_func quant_psnr[2];
133 int (*hadamard8_abs )(uint8_t *src, int stride, int mean);
135 me_cmp_func me_pre_cmp[11];
136 me_cmp_func me_cmp[11];
137 me_cmp_func me_sub_cmp[11];
138 me_cmp_func mb_cmp[11];
140 /* maybe create an array for 16/8 functions */
141 op_pixels_func put_pixels_tab[2][4];
142 op_pixels_func avg_pixels_tab[2][4];
143 op_pixels_func put_no_rnd_pixels_tab[2][4];
144 op_pixels_func avg_no_rnd_pixels_tab[2][4];
145 qpel_mc_func put_qpel_pixels_tab[2][16];
146 qpel_mc_func avg_qpel_pixels_tab[2][16];
147 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
148 qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
149 qpel_mc_func put_mspel_pixels_tab[8];
151 op_pixels_abs_func pix_abs16x16;
152 op_pixels_abs_func pix_abs16x16_x2;
153 op_pixels_abs_func pix_abs16x16_y2;
154 op_pixels_abs_func pix_abs16x16_xy2;
155 op_pixels_abs_func pix_abs8x8;
156 op_pixels_abs_func pix_abs8x8_x2;
157 op_pixels_abs_func pix_abs8x8_y2;
158 op_pixels_abs_func pix_abs8x8_xy2;
160 /* huffyuv specific */
161 void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
162 void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
165 void (*fdct)(DCTELEM *block/* align 16*/);
168 * block -> idct -> clip to unsigned 8 bit -> dest.<br>
169 * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
170 * @param line_size size in pixels of a horizotal line of dest
172 void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
175 * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
176 * @param line_size size in pixels of a horizotal line of dest
178 void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
181 * idct input permutation.<br>
182 * an example to avoid confusion:
183 * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
184 * - (x -> referece dct -> reference idct -> x)
185 * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
186 * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
188 uint8_t idct_permutation[64];
189 int idct_permutation_type;
190 #define FF_NO_IDCT_PERM 1
191 #define FF_LIBMPEG2_IDCT_PERM 2
192 #define FF_SIMPLE_IDCT_PERM 3
193 #define FF_TRANSPOSE_IDCT_PERM 4
197 void dsputil_init(DSPContext* p, AVCodecContext *avctx);
200 * permute block according to permuatation.
201 * @param last last non zero element in scantable order
203 void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
206 * Empty mmx state.<br>
207 * this must be called between any dsp function and float/double code.
208 * for example sin(); dsp->idct_put(); emms_c(); cos()
212 /* should be defined by architectures supporting
213 one or more MultiMedia extension */
214 int mm_support(void);
216 #if defined(HAVE_MMX)
220 #define MM_MMX 0x0001 /* standard MMX */
221 #define MM_3DNOW 0x0004 /* AMD 3DNOW */
222 #define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
223 #define MM_SSE 0x0008 /* SSE functions */
224 #define MM_SSE2 0x0010 /* PIV SSE2 functions */
228 void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
229 void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
231 static inline void emms(void)
233 __asm __volatile ("emms;":::"memory");
239 if (mm_flags & MM_MMX)\
243 #define __align8 __attribute__ ((aligned (8)))
245 void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
246 void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
248 #elif defined(ARCH_ARMV4L)
250 /* This is to use 4 bytes read to the IDCT pointers for some 'zero'
252 #define __align8 __attribute__ ((aligned (4)))
254 void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
256 #elif defined(HAVE_MLIB)
258 /* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
259 #define __align8 __attribute__ ((aligned (8)))
261 void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
263 #elif defined(ARCH_ALPHA)
265 #define __align8 __attribute__ ((aligned (8)))
267 void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
269 #elif defined(ARCH_POWERPC)
271 #define MM_ALTIVEC 0x0001 /* standard AltiVec */
275 #if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN)
279 #define __align8 __attribute__ ((aligned (16)))
281 void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
283 #elif defined(HAVE_MMI)
285 #define __align8 __attribute__ ((aligned (16)))
287 void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
297 struct unaligned_64 { uint64_t l; } __attribute__((packed));
298 struct unaligned_32 { uint32_t l; } __attribute__((packed));
300 #define LD32(a) (((const struct unaligned_32 *) (a))->l)
301 #define LD64(a) (((const struct unaligned_64 *) (a))->l)
303 #define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
307 #define LD32(a) (*((uint32_t*)(a)))
308 #define LD64(a) (*((uint64_t*)(a)))
310 #define ST32(a, b) *((uint32_t*)(a)) = (b)
312 #endif /* !__GNUC__ */
315 void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
316 int orig_linesize[3], int coded_linesize,
317 AVCodecContext *avctx);
319 /* FFT computation */
321 /* NOTE: soon integer code will be added, so you must use the
323 typedef float FFTSample;
325 typedef struct FFTComplex {
329 typedef struct FFTContext {
334 FFTComplex *exptab1; /* only used by SSE code */
335 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
338 int fft_init(FFTContext *s, int nbits, int inverse);
339 void fft_permute(FFTContext *s, FFTComplex *z);
340 void fft_calc_c(FFTContext *s, FFTComplex *z);
341 void fft_calc_sse(FFTContext *s, FFTComplex *z);
342 void fft_calc_altivec(FFTContext *s, FFTComplex *z);
344 static inline void fft_calc(FFTContext *s, FFTComplex *z)
348 void fft_end(FFTContext *s);
350 /* MDCT computation */
352 typedef struct MDCTContext {
353 int n; /* size of MDCT (i.e. number of input data * 2) */
354 int nbits; /* n = 2^nbits */
355 /* pre/post rotation tables */
361 int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
362 void ff_imdct_calc(MDCTContext *s, FFTSample *output,
363 const FFTSample *input, FFTSample *tmp);
364 void ff_mdct_calc(MDCTContext *s, FFTSample *out,
365 const FFTSample *input, FFTSample *tmp);
366 void ff_mdct_end(MDCTContext *s);
368 #define WARPER88_1616(name8, name16)\
369 static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride){\
370 return name8(s, dst , src , stride)\
371 +name8(s, dst+8 , src+8 , stride)\
372 +name8(s, dst +8*stride, src +8*stride, stride)\
373 +name8(s, dst+8+8*stride, src+8+8*stride, stride);\
377 /* XXX: add ISOC specific test to avoid specific BSD testing. */
378 /* better than nothing implementation. */
379 /* btw, rintf() is existing on fbsd too -- alex */
380 static inline long int lrintf(float x)
383 /* XXX: incorrect, but make it compile */
386 return (int)(rint(x));