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revision 1.6, Wed Mar 27 12:58:29 2002 UTC revision 1.33.2.6, Sat Oct 5 21:33:39 2002 UTC
# Line 1  Line 1 
1  /**************************************************************************  /*****************************************************************************
2   *   *
3   *      XVID MPEG-4 VIDEO CODEC   *      XVID MPEG-4 VIDEO CODEC
4   *      native api   *  - Native API implementation  -
5   *   *
6   *      This program is an implementation of a part of one or more MPEG-4   *      This program is an implementation of a part of one or more MPEG-4
7   *      Video tools as specified in ISO/IEC 14496-2 standard.  Those intending   *      Video tools as specified in ISO/IEC 14496-2 standard.  Those intending
# Line 24  Line 24 
24   *   *
25   *      You should have received a copy of the GNU General Public License   *      You should have received a copy of the GNU General Public License
26   *      along with this program; if not, write to the Free Software   *      along with this program; if not, write to the Free Software
27   *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
28   *   *
29   *************************************************************************/   ****************************************************************************/
30    
31  /**************************************************************************  /*****************************************************************************
32   *   *
33   *      History:   *  History
34   *   *
35   *      17.03.2002      Added interpolate8x8_halfpel_hv_xmm   *      - 23.06.2002    added XVID_CPU_CHKONLY
36   *  22.12.2001  API change: added xvid_init() - Isibaar   *  - 17.03.2002        Added interpolate8x8_halfpel_hv_xmm
37   *      16.12.2001      inital version; (c)2001 peter ross <pross@cs.rmit.edu.au>   *  - 22.12.2001  API change: added xvid_init() - Isibaar
38     *  - 16.12.2001        inital version; (c)2001 peter ross <pross@cs.rmit.edu.au>
39   *   *
40   *************************************************************************/   *  $Id$
41     *
42     ****************************************************************************/
43    
44  #include "xvid.h"  #include "xvid.h"
45  #include "decoder.h"  #include "decoder.h"
# Line 48  Line 50 
50  #include "image/colorspace.h"  #include "image/colorspace.h"
51  #include "image/interpolate8x8.h"  #include "image/interpolate8x8.h"
52  #include "utils/mem_transfer.h"  #include "utils/mem_transfer.h"
53    #include "utils/mbfunctions.h"
54  #include "quant/quant_h263.h"  #include "quant/quant_h263.h"
55  #include "quant/quant_mpeg4.h"  #include "quant/quant_mpeg4.h"
56    #include "motion/motion.h"
57  #include "motion/sad.h"  #include "motion/sad.h"
58  #include "utils/emms.h"  #include "utils/emms.h"
59  #include "utils/timer.h"  #include "utils/timer.h"
60    #include "bitstream/mbcoding.h"
61    
62    #if defined(ARCH_X86) && defined(EXPERIMENTAL_SSE2_CODE)
63    
64    #ifdef WIN32
65    #include <windows.h>
66    #else
67    #include <signal.h>
68    #include <setjmp.h>
69    #endif
70    
71    
72    #ifndef WIN32
73    
74    static jmp_buf mark;
75    
76    static void
77    sigill_handler(int signal)
78    {
79       longjmp(mark, 1);
80    }
81    #endif
82    
83    
84    /*
85    calls the funcptr, and returns whether SIGILL (illegal instruction) was signalled
86    return values:
87    -1 : could not determine
88    0  : SIGILL was *not* signalled
89    1  : SIGILL was signalled
90    */
91    
92    int
93    sigill_check(void (*func)())
94    {
95    #ifdef WIN32
96            _try {
97                    func();
98            }
99            _except(EXCEPTION_EXECUTE_HANDLER) {
100    
101                    if (_exception_code() == STATUS_ILLEGAL_INSTRUCTION)
102                            return 1;
103            }
104            return 0;
105    #else
106        void * old_handler;
107        int jmpret;
108    
109    
110        old_handler = signal(SIGILL, sigill_handler);
111        if (old_handler == SIG_ERR)
112        {
113            return -1;
114        }
115    
116  int xvid_init(void *handle, int opt, void *param1, void *param2)      jmpret = setjmp(mark);
117        if (jmpret == 0)
118        {
119            func();
120        }
121    
122        signal(SIGILL, old_handler);
123    
124        return jmpret;
125    #endif
126    }
127    #endif
128    
129    /*****************************************************************************
130     * XviD Init Entry point
131     *
132     * Well this function initialize all internal function pointers according
133     * to the CPU features forced by the library client or autodetected (depending
134     * on the XVID_CPU_FORCE flag). It also initializes vlc coding tables and all
135     * image colorspace transformation tables.
136     *
137     * Returned value : XVID_ERR_OK
138     *                  + API_VERSION in the input XVID_INIT_PARAM structure
139     *                  + core build  "   "    "       "               "
140     *
141     ****************************************************************************/
142    
143    int
144    xvid_init(void *handle,
145                      int opt,
146                      void *param1,
147                      void *param2)
148  {  {
149          int cpu_flags;          int cpu_flags;
150          XVID_INIT_PARAM *init_param;          XVID_INIT_PARAM *init_param;
151    
152          init_param = (XVID_INIT_PARAM *) param1;          init_param = (XVID_INIT_PARAM *) param1;
153    
154          // force specific cpu settings?          /* Inform the client the API version */
155          if((init_param->cpu_flags & XVID_CPU_FORCE) > 0)          init_param->api_version = API_VERSION;
156    
157            /* Inform the client the core build - unused because we're still alpha */
158            init_param->core_build = 1000;
159    
160            /* Do we have to force CPU features  ? */
161            if ((init_param->cpu_flags & XVID_CPU_FORCE)) {
162    
163                  cpu_flags = init_param->cpu_flags;                  cpu_flags = init_param->cpu_flags;
         else {  
164    
165  #ifdef ARCH_X86          } else {
166    
167                  cpu_flags = check_cpu_features();                  cpu_flags = check_cpu_features();
168  #else  
169                  cpu_flags = 0;  #if defined(ARCH_X86) && defined(EXPERIMENTAL_SSE2_CODE)
170                    if ((cpu_flags & XVID_CPU_SSE) && sigill_check(sse_os_trigger))
171                            cpu_flags &= ~XVID_CPU_SSE;
172    
173                    if ((cpu_flags & XVID_CPU_SSE2) && sigill_check(sse2_os_trigger))
174                            cpu_flags &= ~XVID_CPU_SSE2;
175  #endif  #endif
176            }
177    
178            if ((init_param->cpu_flags & XVID_CPU_CHKONLY))
179            {
180                  init_param->cpu_flags = cpu_flags;                  init_param->cpu_flags = cpu_flags;
181                    return XVID_ERR_OK;
182          }          }
183    
184          // initialize the function pointers          init_param->cpu_flags = cpu_flags;
185    
186    
187            /* Initialize the function pointers */
188          idct_int32_init();          idct_int32_init();
189            init_vlc_tables();
190    
191            /* Fixed Point Forward/Inverse DCT transformations */
192          fdct = fdct_int32;          fdct = fdct_int32;
193          idct = idct_int32;          idct = idct_int32;
194    
195            /* Only needed on PPC Altivec archs */
196            sadInit = 0;
197    
198            /* Restore FPU context : emms_c is a nop functions */
199          emms = emms_c;          emms = emms_c;
200    
201            /* Quantization functions */
202          quant_intra = quant_intra_c;          quant_intra = quant_intra_c;
203          dequant_intra = dequant_intra_c;          dequant_intra = dequant_intra_c;
204          quant_inter = quant_inter_c;          quant_inter = quant_inter_c;
# Line 92  Line 209 
209          quant4_inter = quant4_inter_c;          quant4_inter = quant4_inter_c;
210          dequant4_inter = dequant4_inter_c;          dequant4_inter = dequant4_inter_c;
211    
212            /* Block transfer related functions */
213          transfer_8to16copy = transfer_8to16copy_c;          transfer_8to16copy = transfer_8to16copy_c;
214          transfer_16to8copy = transfer_16to8copy_c;          transfer_16to8copy = transfer_16to8copy_c;
215          transfer_8to16sub = transfer_8to16sub_c;          transfer_8to16sub = transfer_8to16sub_c;
216            transfer_8to16sub2 = transfer_8to16sub2_c;
217          transfer_16to8add = transfer_16to8add_c;          transfer_16to8add = transfer_16to8add_c;
218          transfer8x8_copy = transfer8x8_copy_c;          transfer8x8_copy = transfer8x8_copy_c;
219    
220            /* Interlacing functions */
221            MBFieldTest = MBFieldTest_c;
222    
223            /* Image interpolation related functions */
224          interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_c;          interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_c;
225          interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_c;          interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_c;
226          interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_c;          interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_c;
227    
228            interpolate8x8_lowpass_h = interpolate8x8_lowpass_h_c;
229            interpolate8x8_lowpass_v = interpolate8x8_lowpass_v_c;
230            interpolate8x8_lowpass_hv = interpolate8x8_lowpass_hv_c;
231    
232            interpolate8x8_6tap_lowpass_h = interpolate8x8_6tap_lowpass_h_c;
233            interpolate8x8_6tap_lowpass_v = interpolate8x8_6tap_lowpass_v_c;
234    
235            interpolate8x8_avg2 = interpolate8x8_avg2_c;
236            interpolate8x8_avg4 = interpolate8x8_avg4_c;
237    
238            /* Initialize internal colorspace transformation tables */
239          colorspace_init();          colorspace_init();
240    
241            /* All colorspace transformation functions User Format->YV12 */
242          rgb555_to_yv12 = rgb555_to_yv12_c;          rgb555_to_yv12 = rgb555_to_yv12_c;
243          rgb565_to_yv12 = rgb565_to_yv12_c;          rgb565_to_yv12 = rgb565_to_yv12_c;
244          rgb24_to_yv12 = rgb24_to_yv12_c;          rgb24_to_yv12 = rgb24_to_yv12_c;
# Line 112  Line 247 
247          yuyv_to_yv12 = yuyv_to_yv12_c;          yuyv_to_yv12 = yuyv_to_yv12_c;
248          uyvy_to_yv12 = uyvy_to_yv12_c;          uyvy_to_yv12 = uyvy_to_yv12_c;
249    
250            /* All colorspace transformation functions YV12->User format */
251          yv12_to_rgb555 = yv12_to_rgb555_c;          yv12_to_rgb555 = yv12_to_rgb555_c;
252          yv12_to_rgb565 = yv12_to_rgb565_c;          yv12_to_rgb565 = yv12_to_rgb565_c;
253          yv12_to_rgb24 = yv12_to_rgb24_c;          yv12_to_rgb24 = yv12_to_rgb24_c;
# Line 120  Line 256 
256          yv12_to_yuyv = yv12_to_yuyv_c;          yv12_to_yuyv = yv12_to_yuyv_c;
257          yv12_to_uyvy = yv12_to_uyvy_c;          yv12_to_uyvy = yv12_to_uyvy_c;
258    
259            /* Functions used in motion estimation algorithms */
260          calc_cbp = calc_cbp_c;          calc_cbp = calc_cbp_c;
261          sad16 = sad16_c;          sad16 = sad16_c;
262          sad8 = sad8_c;          sad8 = sad8_c;
263            sad16bi  = sad16bi_c;
264            sad8bi   = sad8bi_c;
265          dev16 = dev16_c;          dev16 = dev16_c;
266            sad16v   = sad16v_c;
267    
268    //      Halfpel8_Refine = Halfpel8_Refine_c;
269    
270  #ifdef ARCH_X86  #ifdef ARCH_X86
271          if((cpu_flags & XVID_CPU_MMX) > 0) {          if((cpu_flags & XVID_CPU_MMX) > 0) {
272    
273                    /* Forward and Inverse Discrete Cosine Transformation functions */
274                  fdct = fdct_mmx;                  fdct = fdct_mmx;
275                  idct = idct_mmx;                  idct = idct_mmx;
276    
277                    /* To restore FPU context after mmx use */
278                  emms = emms_mmx;                  emms = emms_mmx;
279    
280                    /* Quantization related functions */
281                  quant_intra = quant_intra_mmx;                  quant_intra = quant_intra_mmx;
282                  dequant_intra = dequant_intra_mmx;                  dequant_intra = dequant_intra_mmx;
283                  quant_inter = quant_inter_mmx;                  quant_inter = quant_inter_mmx;
# Line 142  Line 288 
288                  quant4_inter = quant4_inter_mmx;                  quant4_inter = quant4_inter_mmx;
289                  dequant4_inter = dequant4_inter_mmx;                  dequant4_inter = dequant4_inter_mmx;
290    
291                    /* Block related functions */
292                  transfer_8to16copy = transfer_8to16copy_mmx;                  transfer_8to16copy = transfer_8to16copy_mmx;
293                  transfer_16to8copy = transfer_16to8copy_mmx;                  transfer_16to8copy = transfer_16to8copy_mmx;
294                  transfer_8to16sub = transfer_8to16sub_mmx;                  transfer_8to16sub = transfer_8to16sub_mmx;
295                    transfer_8to16sub2 = transfer_8to16sub2_mmx;
296                  transfer_16to8add = transfer_16to8add_mmx;                  transfer_16to8add = transfer_16to8add_mmx;
297                  transfer8x8_copy = transfer8x8_copy_mmx;                  transfer8x8_copy = transfer8x8_copy_mmx;
298    
299                    /* Interlacing Functions */
300                    MBFieldTest = MBFieldTest_mmx;
301    
302                    /* Image Interpolation related functions */
303                  interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_mmx;                  interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_mmx;
304                  interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_mmx;                  interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_mmx;
305                  interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_mmx;                  interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_mmx;
306    
307                    interpolate8x8_6tap_lowpass_h = interpolate8x8_6tap_lowpass_h_mmx;
308                    interpolate8x8_6tap_lowpass_v = interpolate8x8_6tap_lowpass_v_mmx;
309    
310                    interpolate8x8_avg2 = interpolate8x8_avg2_mmx;
311                    interpolate8x8_avg4 = interpolate8x8_avg4_mmx;
312    
313                    /* Image RGB->YV12 related functions */
314                  rgb24_to_yv12 = rgb24_to_yv12_mmx;                  rgb24_to_yv12 = rgb24_to_yv12_mmx;
315                  rgb32_to_yv12 = rgb32_to_yv12_mmx;                  rgb32_to_yv12 = rgb32_to_yv12_mmx;
316                  yuv_to_yv12 = yuv_to_yv12_mmx;                  yuv_to_yv12 = yuv_to_yv12_mmx;
317                  yuyv_to_yv12 = yuyv_to_yv12_mmx;                  yuyv_to_yv12 = yuyv_to_yv12_mmx;
318                  uyvy_to_yv12 = uyvy_to_yv12_mmx;                  uyvy_to_yv12 = uyvy_to_yv12_mmx;
319    
320                    /* Image YV12->RGB related functions */
321                  yv12_to_rgb24 = yv12_to_rgb24_mmx;                  yv12_to_rgb24 = yv12_to_rgb24_mmx;
322                  yv12_to_rgb32 = yv12_to_rgb32_mmx;                  yv12_to_rgb32 = yv12_to_rgb32_mmx;
323                  yv12_to_yuyv = yv12_to_yuyv_mmx;                  yv12_to_yuyv = yv12_to_yuyv_mmx;
324                  yv12_to_uyvy = yv12_to_uyvy_mmx;                  yv12_to_uyvy = yv12_to_uyvy_mmx;
325    
326                    /* Motion estimation related functions */
327                  calc_cbp = calc_cbp_mmx;                  calc_cbp = calc_cbp_mmx;
328                  sad16 = sad16_mmx;                  sad16 = sad16_mmx;
329                  sad8 = sad8_mmx;                  sad8 = sad8_mmx;
330                    sad16bi = sad16bi_mmx;
331                    sad8bi  = sad8bi_mmx;
332                  dev16 = dev16_mmx;                  dev16 = dev16_mmx;
333                    sad16v   = sad16v_mmx;
334    
335            }
336    
337            /* these 3dnow functions are faster than mmx, but slower than xmm. */
338            if ((cpu_flags & XVID_CPU_3DNOW) > 0) {
339    
340                    /* ME functions */
341                    sad16bi = sad16bi_3dn;
342                    sad8bi  = sad8bi_3dn;
343          }          }
344    
345    
346          if((cpu_flags & XVID_CPU_MMXEXT) > 0) {          if((cpu_flags & XVID_CPU_MMXEXT) > 0) {
347    
348                    /* Inverse DCT */
349                  idct = idct_xmm;                  idct = idct_xmm;
350    
351                    /* Interpolation */
352                  interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_xmm;                  interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_xmm;
353                  interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_xmm;                  interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_xmm;
354                  interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_xmm;                  interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_xmm;
355    
356                    /* Quantization */
357                    dequant_intra = dequant_intra_xmm;
358                    dequant_inter = dequant_inter_xmm;
359    
360                    /* Buffer transfer */
361                    transfer_8to16sub2 = transfer_8to16sub2_xmm;
362    
363                    /* Colorspace transformation */
364                  yuv_to_yv12 = yuv_to_yv12_xmm;                  yuv_to_yv12 = yuv_to_yv12_xmm;
365    
366                    /* ME functions */
367                  sad16 = sad16_xmm;                  sad16 = sad16_xmm;
368                  sad8 = sad8_xmm;                  sad8 = sad8_xmm;
369                    sad16bi = sad16bi_xmm;
370                    sad8bi  = sad8bi_xmm;
371                  dev16 = dev16_xmm;                  dev16 = dev16_xmm;
372                    sad16v   = sad16v_xmm;
373                    fprintf(stderr,"sad16v=XMM\n");
374    
375          }          }
376    
377          if((cpu_flags & XVID_CPU_3DNOW) > 0) {          if((cpu_flags & XVID_CPU_3DNOW) > 0) {
378    
379                    /* Interpolation */
380                  interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_3dn;                  interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_3dn;
381                  interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_3dn;                  interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_3dn;
382                  interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_3dn;                  interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_3dn;
383          }          }
384    
385            if ((cpu_flags & XVID_CPU_SSE2) > 0) {
386    #ifdef EXPERIMENTAL_SSE2_CODE
387    
388                    calc_cbp = calc_cbp_sse2;
389    
390                    /* Quantization */
391                    quant_intra   = quant_intra_sse2;
392                    dequant_intra = dequant_intra_sse2;
393                    quant_inter   = quant_inter_sse2;
394                    dequant_inter = dequant_inter_sse2;
395    
396                    /* ME */
397                    sad16    = sad16_sse2;
398                    dev16    = dev16_sse2;
399    
400                    /* Forward and Inverse DCT */
401                    idct  = idct_sse2;
402                    fdct = fdct_sse2;
403    #endif
404            }
405    
406    #endif
407    
408    #ifdef ARCH_IA64
409            if ((cpu_flags & XVID_CPU_IA64) > 0) { //use assembler routines?
410              idct_ia64_init();
411              fdct = fdct_ia64;
412              idct = idct_ia64;   //not yet working, crashes
413              interpolate8x8_halfpel_h = interpolate8x8_halfpel_h_ia64;
414              interpolate8x8_halfpel_v = interpolate8x8_halfpel_v_ia64;
415              interpolate8x8_halfpel_hv = interpolate8x8_halfpel_hv_ia64;
416              sad16 = sad16_ia64;
417              sad16bi = sad16bi_ia64;
418              sad8 = sad8_ia64;
419              dev16 = dev16_ia64;
420    //        Halfpel8_Refine = Halfpel8_Refine_ia64;
421              quant_intra = quant_intra_ia64;
422              dequant_intra = dequant_intra_ia64;
423              quant_inter = quant_inter_ia64;
424              dequant_inter = dequant_inter_ia64;
425              transfer_8to16copy = transfer_8to16copy_ia64;
426              transfer_16to8copy = transfer_16to8copy_ia64;
427              transfer_8to16sub = transfer_8to16sub_ia64;
428              transfer_8to16sub2 = transfer_8to16sub2_ia64;
429              transfer_16to8add = transfer_16to8add_ia64;
430              transfer8x8_copy = transfer8x8_copy_ia64;
431              DEBUG("Using IA-64 assembler routines.\n");
432            }
433  #endif  #endif
434    
435  #ifdef ARCH_PPC  #ifdef ARCH_PPC
436  #ifdef ARCH_PPC_ALTIVEC  #ifdef ARCH_PPC_ALTIVEC
437          calc_cbp = calc_cbp_altivec;          calc_cbp = calc_cbp_altivec;
438            fdct = fdct_altivec;
439            idct = idct_altivec;
440            sadInit = sadInit_altivec;
441            sad16 = sad16_altivec;
442            sad8 = sad8_altivec;
443            dev16 = dev16_altivec;
444  #else  #else
445          calc_cbp = calc_cbp_ppc;          calc_cbp = calc_cbp_ppc;
446  #endif  #endif
447  #endif  #endif
448    
         // API version  
         init_param->api_version = API_VERSION;  
   
         // something clever has to be done for this  
         init_param->core_build = 1000;  
   
449          return XVID_ERR_OK;          return XVID_ERR_OK;
450  }  }
451    
452  int xvid_decore(void * handle, int opt, void * param1, void * param2)  /*****************************************************************************
453  {   * XviD Native decoder entry point
454          switch (opt)   *
455     * This function is just a wrapper to all the option cases.
456     *
457     * Returned values : XVID_ERR_FAIL when opt is invalid
458     *                   else returns the wrapped function result
459     *
460     ****************************************************************************/
461    
462    int
463    xvid_decore(void *handle,
464                            int opt,
465                            void *param1,
466                            void *param2)
467          {          {
468            switch (opt) {
469          case XVID_DEC_DECODE :          case XVID_DEC_DECODE :
470          return decoder_decode((DECODER *) handle, (XVID_DEC_FRAME *) param1);          return decoder_decode((DECODER *) handle, (XVID_DEC_FRAME *) param1);
471    
# Line 226  Line 481 
481  }  }
482    
483    
484  int xvid_encore(void * handle, int opt, void * param1, void * param2)  /*****************************************************************************
485  {   * XviD Native encoder entry point
486          switch (opt)   *
487     * This function is just a wrapper to all the option cases.
488     *
489     * Returned values : XVID_ERR_FAIL when opt is invalid
490     *                   else returns the wrapped function result
491     *
492     ****************************************************************************/
493    
494    int
495    xvid_encore(void *handle,
496                            int opt,
497                            void *param1,
498                            void *param2)
499          {          {
500            switch (opt) {
501          case XVID_ENC_ENCODE :          case XVID_ENC_ENCODE :
502          return encoder_encode((Encoder *) handle, (XVID_ENC_FRAME *) param1, (XVID_ENC_STATS *) param2);  #ifdef BFRAMES
503                    if (((Encoder *) handle)->mbParam.max_bframes >= 0)
504                    return encoder_encode_bframes((Encoder *) handle, (XVID_ENC_FRAME *) param1,
505                                                              (XVID_ENC_STATS *) param2);
506                    else
507    #endif
508                    return encoder_encode((Encoder *) handle, (XVID_ENC_FRAME *) param1,
509                                                              (XVID_ENC_STATS *) param2);
510    
511          case XVID_ENC_CREATE :          case XVID_ENC_CREATE :
512          return encoder_create((XVID_ENC_PARAM *) param1);          return encoder_create((XVID_ENC_PARAM *) param1);

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