/*
* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
*
- * 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
*/
+#include "libavutil/intmath.h"
#include "avcodec.h"
#include "dsputil.h"
+#include "dwt.h"
#include "snow.h"
#include "rangecoder.h"
#include "mathops.h"
#include "mpegvideo.h"
+#include "h263.h"
#undef NDEBUG
#include <assert.h>
}Plane;
typedef struct SnowContext{
-// MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to eventually make the motion estimation independent of MpegEncContext, so this will be removed then (FIXME/XXX)
AVCodecContext *avctx;
RangeCoder c;
DSPContext dsp;
+ DWTContext dwt;
AVFrame new_picture;
AVFrame input_picture; ///< new_picture with the internal linesizes
AVFrame current_picture;
uint8_t *scratchbuf;
}SnowContext;
-typedef struct {
- IDWTELEM *b0;
- IDWTELEM *b1;
- IDWTELEM *b2;
- IDWTELEM *b3;
- int y;
-} DWTCompose;
-
-#define slice_buffer_get_line(slice_buf, line_num) ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] : slice_buffer_load_line((slice_buf), (line_num)))
-//#define slice_buffer_get_line(slice_buf, line_num) (slice_buffer_load_line((slice_buf), (line_num)))
-
-static void slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer)
-{
- int i;
-
- buf->base_buffer = base_buffer;
- buf->line_count = line_count;
- buf->line_width = line_width;
- buf->data_count = max_allocated_lines;
- buf->line = av_mallocz (sizeof(IDWTELEM *) * line_count);
- buf->data_stack = av_malloc (sizeof(IDWTELEM *) * max_allocated_lines);
-
- for(i = 0; i < max_allocated_lines; i++){
- buf->data_stack[i] = av_malloc (sizeof(IDWTELEM) * line_width);
- }
-
- buf->data_stack_top = max_allocated_lines - 1;
-}
-
-static IDWTELEM * slice_buffer_load_line(slice_buffer * buf, int line)
-{
- IDWTELEM * buffer;
-
- assert(buf->data_stack_top >= 0);
-// assert(!buf->line[line]);
- if (buf->line[line])
- return buf->line[line];
-
- buffer = buf->data_stack[buf->data_stack_top];
- buf->data_stack_top--;
- buf->line[line] = buffer;
-
- return buffer;
-}
-
-static void slice_buffer_release(slice_buffer * buf, int line)
-{
- IDWTELEM * buffer;
-
- assert(line >= 0 && line < buf->line_count);
- assert(buf->line[line]);
-
- buffer = buf->line[line];
- buf->data_stack_top++;
- buf->data_stack[buf->data_stack_top] = buffer;
- buf->line[line] = NULL;
-}
-
-static void slice_buffer_flush(slice_buffer * buf)
-{
- int i;
- for(i = 0; i < buf->line_count; i++){
- if (buf->line[i])
- slice_buffer_release(buf, i);
- }
-}
-
-static void slice_buffer_destroy(slice_buffer * buf)
-{
- int i;
- slice_buffer_flush(buf);
-
- for(i = buf->data_count - 1; i >= 0; i--){
- av_freep(&buf->data_stack[i]);
- }
- av_freep(&buf->data_stack);
- av_freep(&buf->line);
-}
-
#ifdef __sgi
// Avoid a name clash on SGI IRIX
#undef qexp
#define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
static uint8_t qexp[QROOT];
-static inline int mirror(int v, int m){
- while((unsigned)v > (unsigned)m){
- v=-v;
- if(v<0) v+= 2*m;
- }
- return v;
-}
-
static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
int i;
return v;
}
-static av_always_inline void
-lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
- int dst_step, int src_step, int ref_step,
- int width, int mul, int add, int shift,
- int highpass, int inverse){
- const int mirror_left= !highpass;
- const int mirror_right= (width&1) ^ highpass;
- const int w= (width>>1) - 1 + (highpass & width);
- int i;
-
-#define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref)))
- if(mirror_left){
- dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse);
- dst += dst_step;
- src += src_step;
- }
-
- for(i=0; i<w; i++){
- dst[i*dst_step] =
- LIFT(src[i*src_step],
- ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift),
- inverse);
- }
-
- if(mirror_right){
- dst[w*dst_step] =
- LIFT(src[w*src_step],
- ((mul*2*ref[w*ref_step]+add)>>shift),
- inverse);
- }
-}
-
-static av_always_inline void
-inv_lift(IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref,
- int dst_step, int src_step, int ref_step,
- int width, int mul, int add, int shift,
- int highpass, int inverse){
- const int mirror_left= !highpass;
- const int mirror_right= (width&1) ^ highpass;
- const int w= (width>>1) - 1 + (highpass & width);
- int i;
-
-#define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref)))
- if(mirror_left){
- dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse);
- dst += dst_step;
- src += src_step;
- }
-
- for(i=0; i<w; i++){
- dst[i*dst_step] =
- LIFT(src[i*src_step],
- ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift),
- inverse);
- }
-
- if(mirror_right){
- dst[w*dst_step] =
- LIFT(src[w*src_step],
- ((mul*2*ref[w*ref_step]+add)>>shift),
- inverse);
- }
-}
-
-#ifndef liftS
-static av_always_inline void
-liftS(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
- int dst_step, int src_step, int ref_step,
- int width, int mul, int add, int shift,
- int highpass, int inverse){
- const int mirror_left= !highpass;
- const int mirror_right= (width&1) ^ highpass;
- const int w= (width>>1) - 1 + (highpass & width);
- int i;
-
- assert(shift == 4);
-#define LIFTS(src, ref, inv) \
- ((inv) ? \
- (src) + (((ref) + 4*(src))>>shift): \
- -((-16*(src) + (ref) + add/4 + 1 + (5<<25))/(5*4) - (1<<23)))
- if(mirror_left){
- dst[0] = LIFTS(src[0], mul*2*ref[0]+add, inverse);
- dst += dst_step;
- src += src_step;
- }
-
- for(i=0; i<w; i++){
- dst[i*dst_step] =
- LIFTS(src[i*src_step],
- mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add,
- inverse);
- }
-
- if(mirror_right){
- dst[w*dst_step] =
- LIFTS(src[w*src_step], mul*2*ref[w*ref_step]+add, inverse);
- }
-}
-static av_always_inline void
-inv_liftS(IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref,
- int dst_step, int src_step, int ref_step,
- int width, int mul, int add, int shift,
- int highpass, int inverse){
- const int mirror_left= !highpass;
- const int mirror_right= (width&1) ^ highpass;
- const int w= (width>>1) - 1 + (highpass & width);
- int i;
-
- assert(shift == 4);
-#define LIFTS(src, ref, inv) \
- ((inv) ? \
- (src) + (((ref) + 4*(src))>>shift): \
- -((-16*(src) + (ref) + add/4 + 1 + (5<<25))/(5*4) - (1<<23)))
- if(mirror_left){
- dst[0] = LIFTS(src[0], mul*2*ref[0]+add, inverse);
- dst += dst_step;
- src += src_step;
- }
-
- for(i=0; i<w; i++){
- dst[i*dst_step] =
- LIFTS(src[i*src_step],
- mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add,
- inverse);
- }
-
- if(mirror_right){
- dst[w*dst_step] =
- LIFTS(src[w*src_step], mul*2*ref[w*ref_step]+add, inverse);
- }
-}
-#endif /* ! liftS */
-
-static void horizontal_decompose53i(DWTELEM *b, int width){
- DWTELEM temp[width];
- const int width2= width>>1;
- int x;
- const int w2= (width+1)>>1;
-
- for(x=0; x<width2; x++){
- temp[x ]= b[2*x ];
- temp[x+w2]= b[2*x + 1];
- }
- if(width&1)
- temp[x ]= b[2*x ];
-#if 0
- {
- int A1,A2,A3,A4;
- A2= temp[1 ];
- A4= temp[0 ];
- A1= temp[0+width2];
- A1 -= (A2 + A4)>>1;
- A4 += (A1 + 1)>>1;
- b[0+width2] = A1;
- b[0 ] = A4;
- for(x=1; x+1<width2; x+=2){
- A3= temp[x+width2];
- A4= temp[x+1 ];
- A3 -= (A2 + A4)>>1;
- A2 += (A1 + A3 + 2)>>2;
- b[x+width2] = A3;
- b[x ] = A2;
-
- A1= temp[x+1+width2];
- A2= temp[x+2 ];
- A1 -= (A2 + A4)>>1;
- A4 += (A1 + A3 + 2)>>2;
- b[x+1+width2] = A1;
- b[x+1 ] = A4;
- }
- A3= temp[width-1];
- A3 -= A2;
- A2 += (A1 + A3 + 2)>>2;
- b[width -1] = A3;
- b[width2-1] = A2;
- }
-#else
- lift(b+w2, temp+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0);
- lift(b , temp , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 0);
-#endif /* 0 */
-}
-
-static void vertical_decompose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] -= (b0[i] + b2[i])>>1;
- }
-}
-
-static void vertical_decompose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] += (b0[i] + b2[i] + 2)>>2;
- }
-}
-
-static void spatial_decompose53i(DWTELEM *buffer, int width, int height, int stride){
- int y;
- DWTELEM *b0= buffer + mirror(-2-1, height-1)*stride;
- DWTELEM *b1= buffer + mirror(-2 , height-1)*stride;
-
- for(y=-2; y<height; y+=2){
- DWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
- DWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
-
- if(y+1<(unsigned)height) horizontal_decompose53i(b2, width);
- if(y+2<(unsigned)height) horizontal_decompose53i(b3, width);
-
- if(y+1<(unsigned)height) vertical_decompose53iH0(b1, b2, b3, width);
- if(y+0<(unsigned)height) vertical_decompose53iL0(b0, b1, b2, width);
-
- b0=b2;
- b1=b3;
- }
-}
-
-static void horizontal_decompose97i(DWTELEM *b, int width){
- DWTELEM temp[width];
- const int w2= (width+1)>>1;
-
- lift (temp+w2, b +1, b , 1, 2, 2, width, W_AM, W_AO, W_AS, 1, 1);
- liftS(temp , b , temp+w2, 1, 2, 1, width, W_BM, W_BO, W_BS, 0, 0);
- lift (b +w2, temp+w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0);
- lift (b , temp , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0);
-}
-
-
-static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] -= (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
- }
-}
-
-static void vertical_decompose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] += (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
- }
-}
-
-static void vertical_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
-#ifdef liftS
- b1[i] -= (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
-#else
- b1[i] = (16*4*b1[i] - 4*(b0[i] + b2[i]) + W_BO*5 + (5<<27)) / (5*16) - (1<<23);
-#endif
- }
-}
-
-static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] += (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
- }
-}
-
-static void spatial_decompose97i(DWTELEM *buffer, int width, int height, int stride){
- int y;
- DWTELEM *b0= buffer + mirror(-4-1, height-1)*stride;
- DWTELEM *b1= buffer + mirror(-4 , height-1)*stride;
- DWTELEM *b2= buffer + mirror(-4+1, height-1)*stride;
- DWTELEM *b3= buffer + mirror(-4+2, height-1)*stride;
-
- for(y=-4; y<height; y+=2){
- DWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
- DWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
-
- if(y+3<(unsigned)height) horizontal_decompose97i(b4, width);
- if(y+4<(unsigned)height) horizontal_decompose97i(b5, width);
-
- if(y+3<(unsigned)height) vertical_decompose97iH0(b3, b4, b5, width);
- if(y+2<(unsigned)height) vertical_decompose97iL0(b2, b3, b4, width);
- if(y+1<(unsigned)height) vertical_decompose97iH1(b1, b2, b3, width);
- if(y+0<(unsigned)height) vertical_decompose97iL1(b0, b1, b2, width);
-
- b0=b2;
- b1=b3;
- b2=b4;
- b3=b5;
- }
-}
-
-void ff_spatial_dwt(DWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){
- int level;
-
- for(level=0; level<decomposition_count; level++){
- switch(type){
- case DWT_97: spatial_decompose97i(buffer, width>>level, height>>level, stride<<level); break;
- case DWT_53: spatial_decompose53i(buffer, width>>level, height>>level, stride<<level); break;
- }
- }
-}
-
-static void horizontal_compose53i(IDWTELEM *b, int width){
- IDWTELEM temp[width];
- const int width2= width>>1;
- const int w2= (width+1)>>1;
- int x;
-
-#if 0
- int A1,A2,A3,A4;
- A2= temp[1 ];
- A4= temp[0 ];
- A1= temp[0+width2];
- A1 -= (A2 + A4)>>1;
- A4 += (A1 + 1)>>1;
- b[0+width2] = A1;
- b[0 ] = A4;
- for(x=1; x+1<width2; x+=2){
- A3= temp[x+width2];
- A4= temp[x+1 ];
- A3 -= (A2 + A4)>>1;
- A2 += (A1 + A3 + 2)>>2;
- b[x+width2] = A3;
- b[x ] = A2;
-
- A1= temp[x+1+width2];
- A2= temp[x+2 ];
- A1 -= (A2 + A4)>>1;
- A4 += (A1 + A3 + 2)>>2;
- b[x+1+width2] = A1;
- b[x+1 ] = A4;
- }
- A3= temp[width-1];
- A3 -= A2;
- A2 += (A1 + A3 + 2)>>2;
- b[width -1] = A3;
- b[width2-1] = A2;
-#else
- inv_lift(temp , b , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 1);
- inv_lift(temp+w2, b+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 1);
-#endif /* 0 */
- for(x=0; x<width2; x++){
- b[2*x ]= temp[x ];
- b[2*x + 1]= temp[x+w2];
- }
- if(width&1)
- b[2*x ]= temp[x ];
-}
-
-static void vertical_compose53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] += (b0[i] + b2[i])>>1;
- }
-}
-
-static void vertical_compose53iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] -= (b0[i] + b2[i] + 2)>>2;
- }
-}
-
-static void spatial_compose53i_buffered_init(DWTCompose *cs, slice_buffer * sb, int height, int stride_line){
- cs->b0 = slice_buffer_get_line(sb, mirror(-1-1, height-1) * stride_line);
- cs->b1 = slice_buffer_get_line(sb, mirror(-1 , height-1) * stride_line);
- cs->y = -1;
-}
-
-static void spatial_compose53i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride){
- cs->b0 = buffer + mirror(-1-1, height-1)*stride;
- cs->b1 = buffer + mirror(-1 , height-1)*stride;
- cs->y = -1;
-}
-
-static void spatial_compose53i_dy_buffered(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line){
- int y= cs->y;
-
- IDWTELEM *b0= cs->b0;
- IDWTELEM *b1= cs->b1;
- IDWTELEM *b2= slice_buffer_get_line(sb, mirror(y+1, height-1) * stride_line);
- IDWTELEM *b3= slice_buffer_get_line(sb, mirror(y+2, height-1) * stride_line);
-
- if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width);
- if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width);
-
- if(y-1<(unsigned)height) horizontal_compose53i(b0, width);
- if(y+0<(unsigned)height) horizontal_compose53i(b1, width);
-
- cs->b0 = b2;
- cs->b1 = b3;
- cs->y += 2;
-}
-
-static void spatial_compose53i_dy(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride){
- int y= cs->y;
- IDWTELEM *b0= cs->b0;
- IDWTELEM *b1= cs->b1;
- IDWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
- IDWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
-
- if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width);
- if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width);
-
- if(y-1<(unsigned)height) horizontal_compose53i(b0, width);
- if(y+0<(unsigned)height) horizontal_compose53i(b1, width);
-
- cs->b0 = b2;
- cs->b1 = b3;
- cs->y += 2;
-}
-
-static void av_unused spatial_compose53i(IDWTELEM *buffer, int width, int height, int stride){
- DWTCompose cs;
- spatial_compose53i_init(&cs, buffer, height, stride);
- while(cs.y <= height)
- spatial_compose53i_dy(&cs, buffer, width, height, stride);
-}
-
-
-void ff_snow_horizontal_compose97i(IDWTELEM *b, int width){
- IDWTELEM temp[width];
- const int w2= (width+1)>>1;
-
- inv_lift (temp , b , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 1);
- inv_lift (temp+w2, b +w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 1);
- inv_liftS(b , temp , temp+w2, 2, 1, 1, width, W_BM, W_BO, W_BS, 0, 1);
- inv_lift (b+1 , temp+w2, b , 2, 1, 2, width, W_AM, W_AO, W_AS, 1, 0);
-}
-
-static void vertical_compose97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
- }
-}
-
-static void vertical_compose97iH1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] -= (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
- }
-}
-
-static void vertical_compose97iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
-#ifdef liftS
- b1[i] += (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
-#else
- b1[i] += (W_BM*(b0[i] + b2[i])+4*b1[i]+W_BO)>>W_BS;
-#endif
- }
-}
-
-static void vertical_compose97iL1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
- int i;
-
- for(i=0; i<width; i++){
- b1[i] -= (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
- }
-}
-
-void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
- int i;
-
- for(i=0; i<width; i++){
- b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
- b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
-#ifdef liftS
- b2[i] += (W_BM*(b1[i] + b3[i])+W_BO)>>W_BS;
-#else
- b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
-#endif
- b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
- }
-}
-
-static void spatial_compose97i_buffered_init(DWTCompose *cs, slice_buffer * sb, int height, int stride_line){
- cs->b0 = slice_buffer_get_line(sb, mirror(-3-1, height-1) * stride_line);
- cs->b1 = slice_buffer_get_line(sb, mirror(-3 , height-1) * stride_line);
- cs->b2 = slice_buffer_get_line(sb, mirror(-3+1, height-1) * stride_line);
- cs->b3 = slice_buffer_get_line(sb, mirror(-3+2, height-1) * stride_line);
- cs->y = -3;
-}
-
-static void spatial_compose97i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride){
- cs->b0 = buffer + mirror(-3-1, height-1)*stride;
- cs->b1 = buffer + mirror(-3 , height-1)*stride;
- cs->b2 = buffer + mirror(-3+1, height-1)*stride;
- cs->b3 = buffer + mirror(-3+2, height-1)*stride;
- cs->y = -3;
-}
-
-static void spatial_compose97i_dy_buffered(DSPContext *dsp, DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line){
- int y = cs->y;
-
- IDWTELEM *b0= cs->b0;
- IDWTELEM *b1= cs->b1;
- IDWTELEM *b2= cs->b2;
- IDWTELEM *b3= cs->b3;
- IDWTELEM *b4= slice_buffer_get_line(sb, mirror(y + 3, height - 1) * stride_line);
- IDWTELEM *b5= slice_buffer_get_line(sb, mirror(y + 4, height - 1) * stride_line);
-
- if(y>0 && y+4<height){
- dsp->vertical_compose97i(b0, b1, b2, b3, b4, b5, width);
- }else{
- if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width);
- if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width);
- if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width);
- if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width);
- }
-
- if(y-1<(unsigned)height) dsp->horizontal_compose97i(b0, width);
- if(y+0<(unsigned)height) dsp->horizontal_compose97i(b1, width);
-
- cs->b0=b2;
- cs->b1=b3;
- cs->b2=b4;
- cs->b3=b5;
- cs->y += 2;
-}
-
-static void spatial_compose97i_dy(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride){
- int y = cs->y;
- IDWTELEM *b0= cs->b0;
- IDWTELEM *b1= cs->b1;
- IDWTELEM *b2= cs->b2;
- IDWTELEM *b3= cs->b3;
- IDWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
- IDWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
-
- if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width);
- if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width);
- if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width);
- if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width);
-
- if(y-1<(unsigned)height) ff_snow_horizontal_compose97i(b0, width);
- if(y+0<(unsigned)height) ff_snow_horizontal_compose97i(b1, width);
-
- cs->b0=b2;
- cs->b1=b3;
- cs->b2=b4;
- cs->b3=b5;
- cs->y += 2;
-}
-
-static void av_unused spatial_compose97i(IDWTELEM *buffer, int width, int height, int stride){
- DWTCompose cs;
- spatial_compose97i_init(&cs, buffer, height, stride);
- while(cs.y <= height)
- spatial_compose97i_dy(&cs, buffer, width, height, stride);
-}
-
-static void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count){
- int level;
- for(level=decomposition_count-1; level>=0; level--){
- switch(type){
- case DWT_97: spatial_compose97i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break;
- case DWT_53: spatial_compose53i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break;
- }
- }
-}
-
-static void ff_spatial_idwt_buffered_slice(DSPContext *dsp, DWTCompose *cs, slice_buffer * slice_buf, int width, int height, int stride_line, int type, int decomposition_count, int y){
- const int support = type==1 ? 3 : 5;
- int level;
- if(type==2) return;
-
- for(level=decomposition_count-1; level>=0; level--){
- while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){
- switch(type){
- case DWT_97: spatial_compose97i_dy_buffered(dsp, cs+level, slice_buf, width>>level, height>>level, stride_line<<level);
- break;
- case DWT_53: spatial_compose53i_dy_buffered(cs+level, slice_buf, width>>level, height>>level, stride_line<<level);
- break;
- }
- }
- }
-}
-
static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
const int w= b->width;
const int h= b->height;
int x,y;
- if(1){
- int run, runs;
- x_and_coeff *xc= b->x_coeff;
- x_and_coeff *prev_xc= NULL;
- x_and_coeff *prev2_xc= xc;
- x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
- x_and_coeff *prev_parent_xc= parent_xc;
+ int run, runs;
+ x_and_coeff *xc= b->x_coeff;
+ x_and_coeff *prev_xc= NULL;
+ x_and_coeff *prev2_xc= xc;
+ x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
+ x_and_coeff *prev_parent_xc= parent_xc;
- runs= get_symbol2(&s->c, b->state[30], 0);
- if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
- else run= INT_MAX;
+ runs= get_symbol2(&s->c, b->state[30], 0);
+ if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
+ else run= INT_MAX;
- for(y=0; y<h; y++){
- int v=0;
- int lt=0, t=0, rt=0;
+ for(y=0; y<h; y++){
+ int v=0;
+ int lt=0, t=0, rt=0;
- if(y && prev_xc->x == 0){
- rt= prev_xc->coeff;
- }
- for(x=0; x<w; x++){
- int p=0;
- const int l= v;
+ if(y && prev_xc->x == 0){
+ rt= prev_xc->coeff;
+ }
+ for(x=0; x<w; x++){
+ int p=0;
+ const int l= v;
- lt= t; t= rt;
+ lt= t; t= rt;
- if(y){
- if(prev_xc->x <= x)
- prev_xc++;
- if(prev_xc->x == x + 1)
- rt= prev_xc->coeff;
- else
- rt=0;
+ if(y){
+ if(prev_xc->x <= x)
+ prev_xc++;
+ if(prev_xc->x == x + 1)
+ rt= prev_xc->coeff;
+ else
+ rt=0;
+ }
+ if(parent_xc){
+ if(x>>1 > parent_xc->x){
+ parent_xc++;
}
- if(parent_xc){
- if(x>>1 > parent_xc->x){
- parent_xc++;
- }
- if(x>>1 == parent_xc->x){
- p= parent_xc->coeff;
- }
+ if(x>>1 == parent_xc->x){
+ p= parent_xc->coeff;
}
- if(/*ll|*/l|lt|t|rt|p){
- int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
+ }
+ if(/*ll|*/l|lt|t|rt|p){
+ int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
- v=get_rac(&s->c, &b->state[0][context]);
- if(v){
- v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
- v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l&0xFF] + 3*quant3bA[t&0xFF]]);
+ v=get_rac(&s->c, &b->state[0][context]);
+ if(v){
+ v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
+ v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l&0xFF] + 3*quant3bA[t&0xFF]]);
- xc->x=x;
- (xc++)->coeff= v;
- }
+ xc->x=x;
+ (xc++)->coeff= v;
+ }
+ }else{
+ if(!run){
+ if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
+ else run= INT_MAX;
+ v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
+ v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
+
+ xc->x=x;
+ (xc++)->coeff= v;
}else{
- if(!run){
- if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
- else run= INT_MAX;
- v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
- v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
-
- xc->x=x;
- (xc++)->coeff= v;
- }else{
- int max_run;
- run--;
- v=0;
-
- if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
- else max_run= FFMIN(run, w-x-1);
- if(parent_xc)
- max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
- x+= max_run;
- run-= max_run;
- }
+ int max_run;
+ run--;
+ v=0;
+
+ if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
+ else max_run= FFMIN(run, w-x-1);
+ if(parent_xc)
+ max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
+ x+= max_run;
+ run-= max_run;
}
}
- (xc++)->x= w+1; //end marker
- prev_xc= prev2_xc;
- prev2_xc= xc;
+ }
+ (xc++)->x= w+1; //end marker
+ prev_xc= prev2_xc;
+ prev2_xc= xc;
- if(parent_xc){
- if(y&1){
- while(parent_xc->x != parent->width+1)
- parent_xc++;
+ if(parent_xc){
+ if(y&1){
+ while(parent_xc->x != parent->width+1)
parent_xc++;
- prev_parent_xc= parent_xc;
- }else{
- parent_xc= prev_parent_xc;
- }
+ parent_xc++;
+ prev_parent_xc= parent_xc;
+ }else{
+ parent_xc= prev_parent_xc;
}
}
-
- (xc++)->x= w+1; //end marker
}
+
+ (xc++)->x= w+1; //end marker
}
static inline void decode_subband_slice_buffered(SnowContext *s, SubBand *b, slice_buffer * sb, int start_y, int h, int save_state[1]){
}
}
-static void mc_block(Plane *p, uint8_t *dst, const uint8_t *src, uint8_t *tmp, int stride, int b_w, int b_h, int dx, int dy){
+static void mc_block(Plane *p, uint8_t *dst, const uint8_t *src, int stride, int b_w, int b_h, int dx, int dy){
static const uint8_t weight[64]={
8,7,6,5,4,3,2,1,
7,7,0,0,0,0,0,1,
#define mca(dx,dy,b_w)\
static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int stride, int h){\
- uint8_t tmp[stride*(b_w+HTAPS_MAX-1)];\
assert(h==b_w);\
- mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, tmp, stride, b_w, b_w, dx, dy);\
+ mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\
}
mca( 0, 0,16)
src += sx + sy*stride;
if( (unsigned)sx >= w - b_w - (HTAPS_MAX-2)
|| (unsigned)sy >= h - b_h - (HTAPS_MAX-2)){
- ff_emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h);
+ s->dsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h);
src= tmp + MB_SIZE;
}
// assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h);
assert(b_w>1 && b_h>1);
assert((tab_index>=0 && tab_index<4) || b_w==32);
if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1)) || !s->plane[plane_index].fast_mc )
- mc_block(&s->plane[plane_index], dst, src, tmp, stride, b_w, b_h, dx, dy);
+ mc_block(&s->plane[plane_index], dst, src, stride, b_w, b_h, dx, dy);
else if(b_w==32){
int y;
for(y=0; y<b_h; y+=16){
}
#else
if(sliced){
- s->dsp.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
+ s->dwt.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
}else{
for(y=0; y<b_h; y++){
//FIXME ugly misuse of obmc_stride
s->max_ref_frames=1; //just make sure its not an invalid value in case of no initial keyframe
dsputil_init(&s->dsp, avctx);
+ ff_dwt_init(&s->dwt);
#define mcf(dx,dy)\
s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\
int h= s->avctx->height;
if(s->current_picture.data[0]){
- s->dsp.draw_edges(s->current_picture.data[0], s->current_picture.linesize[0], w , h , EDGE_WIDTH );
- s->dsp.draw_edges(s->current_picture.data[1], s->current_picture.linesize[1], w>>1, h>>1, EDGE_WIDTH/2);
- s->dsp.draw_edges(s->current_picture.data[2], s->current_picture.linesize[2], w>>1, h>>1, EDGE_WIDTH/2);
+ s->dsp.draw_edges(s->current_picture.data[0],
+ s->current_picture.linesize[0], w , h ,
+ EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
+ s->dsp.draw_edges(s->current_picture.data[1],
+ s->current_picture.linesize[1], w>>1, h>>1,
+ EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM);
+ s->dsp.draw_edges(s->current_picture.data[2],
+ s->current_picture.linesize[2], w>>1, h>>1,
+ EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM);
}
release_buffer(s->avctx);
}
}
}
+ if (s->mconly_picture.data[0])
+ s->avctx->release_buffer(s->avctx, &s->mconly_picture);
+ if (s->current_picture.data[0])
+ s->avctx->release_buffer(s->avctx, &s->current_picture);
}
static av_cold int decode_init(AVCodecContext *avctx)
ff_init_range_decoder(c, buf, buf_size);
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
- s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P
+ s->current_picture.pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P
if(decode_header(s)<0)
return -1;
common_init_after_header(avctx);
// realloc slice buffer for the case that spatial_decomposition_count changed
- slice_buffer_destroy(&s->sb);
- slice_buffer_init(&s->sb, s->plane[0].height, (MB_SIZE >> s->block_max_depth) + s->spatial_decomposition_count * 8 + 1, s->plane[0].width, s->spatial_idwt_buffer);
+ ff_slice_buffer_destroy(&s->sb);
+ ff_slice_buffer_init(&s->sb, s->plane[0].height, (MB_SIZE >> s->block_max_depth) + s->spatial_decomposition_count * 8 + 1, s->plane[0].width, s->spatial_idwt_buffer);
for(plane_index=0; plane_index<3; plane_index++){
Plane *p= &s->plane[plane_index];
}
for(; yd<slice_h; yd+=4){
- ff_spatial_idwt_buffered_slice(&s->dsp, cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count, yd);
+ ff_spatial_idwt_buffered_slice(&s->dwt, cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count, yd);
}
if(s->qlog == LOSSLESS_QLOG){
y = FFMIN(p->height, slice_starty);
end_y = FFMIN(p->height, slice_h);
while(y < end_y)
- slice_buffer_release(&s->sb, y++);
+ ff_slice_buffer_release(&s->sb, y++);
}
- slice_buffer_flush(&s->sb);
+ ff_slice_buffer_flush(&s->sb);
}
}
{
SnowContext *s = avctx->priv_data;
- slice_buffer_destroy(&s->sb);
+ ff_slice_buffer_destroy(&s->sb);
common_end(s);
return 0;
}
-AVCodec snow_decoder = {
+AVCodec ff_snow_decoder = {
"snow",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_SNOW,
sizeof(SnowContext),
decode_init,
* to improve the score of the whole frame, thus iterative motion
* estimation does not always converge. */
if(s->avctx->me_cmp == FF_CMP_W97)
- distortion = w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
+ distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
else if(s->avctx->me_cmp == FF_CMP_W53)
- distortion = w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
+ distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
else{
distortion = 0;
for(i=0; i<4; i++){
return distortion + rate*penalty_factor;
}
-static void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){
- int level;
- for(level=decomposition_count-1; level>=0; level--){
- switch(type){
- case DWT_97: spatial_compose97i_init(cs+level, buffer, height>>level, stride<<level); break;
- case DWT_53: spatial_compose53i_init(cs+level, buffer, height>>level, stride<<level); break;
- }
- }
-}
-
-static void ff_spatial_idwt_slice(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count, int y){
- const int support = type==1 ? 3 : 5;
- int level;
- if(type==2) return;
-
- for(level=decomposition_count-1; level>=0; level--){
- while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){
- switch(type){
- case DWT_97: spatial_compose97i_dy(cs+level, buffer, width>>level, height>>level, stride<<level);
- break;
- case DWT_53: spatial_compose53i_dy(cs+level, buffer, width>>level, height>>level, stride<<level);
- break;
- }
- }
- }
-}
-
-static void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){
- DWTCompose cs[MAX_DECOMPOSITIONS];
- int y;
- ff_spatial_idwt_init(cs, buffer, width, height, stride, type, decomposition_count);
- for(y=0; y<height; y+=4)
- ff_spatial_idwt_slice(cs, buffer, width, height, stride, type, decomposition_count, y);
-}
-
static int encode_subband_c0run(SnowContext *s, SubBand *b, IDWTELEM *src, IDWTELEM *parent, int stride, int orientation){
const int w= b->width;
const int h= b->height;
}
best_rd= ref_rd;
*block= ref_b;
-#if 1
check_block(s, mb_x, mb_y, color, 1, *obmc_edged, &best_rd);
//FIXME RD style color selection
-#endif
if(!same_block(block, &backup)){
if(tb ) tb ->type &= ~BLOCK_OPT;
if(lb ) lb ->type &= ~BLOCK_OPT;
}
}
}
- av_log(NULL, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change);
+ av_log(s->avctx, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change);
if(!change)
break;
}
change++;
}
}
- av_log(NULL, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
+ av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
}
}
coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
assert(coef_sum < INT_MAX);
- if(pict->pict_type == FF_I_TYPE){
+ if(pict->pict_type == AV_PICTURE_TYPE_I){
s->m.current_picture.mb_var_sum= coef_sum;
s->m.current_picture.mc_mb_var_sum= 0;
}else{
if(avctx->flags&CODEC_FLAG_PASS2){
s->m.pict_type =
pict->pict_type= s->m.rc_context.entry[avctx->frame_number].new_pict_type;
- s->keyframe= pict->pict_type==FF_I_TYPE;
+ s->keyframe= pict->pict_type==AV_PICTURE_TYPE_I;
if(!(avctx->flags&CODEC_FLAG_QSCALE)) {
pict->quality= ff_rate_estimate_qscale(&s->m, 0);
if (pict->quality < 0)
}else{
s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
s->m.pict_type=
- pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE;
+ pict->pict_type= s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
}
if(s->pass1_rc && avctx->frame_number == 0)
s->m.current_picture_ptr= &s->m.current_picture;
s->m.last_picture.pts= s->m.current_picture.pts;
s->m.current_picture.pts= pict->pts;
- if(pict->pict_type == FF_P_TYPE){
+ if(pict->pict_type == AV_PICTURE_TYPE_P){
int block_width = (width +15)>>4;
int block_height= (height+15)>>4;
int stride= s->current_picture.linesize[0];
redo_frame:
- if(pict->pict_type == FF_I_TYPE)
+ if(pict->pict_type == AV_PICTURE_TYPE_I)
s->spatial_decomposition_count= 5;
else
s->spatial_decomposition_count= 5;
s->m.pict_type = pict->pict_type;
- s->qbias= pict->pict_type == FF_P_TYPE ? 2 : 0;
+ s->qbias= pict->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
common_init_after_header(avctx);
predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
if( plane_index==0
- && pict->pict_type == FF_P_TYPE
+ && pict->pict_type == AV_PICTURE_TYPE_P
&& !(avctx->flags&CODEC_FLAG_PASS2)
&& s->m.me.scene_change_score > s->avctx->scenechange_threshold){
ff_init_range_encoder(c, buf, buf_size);
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
- pict->pict_type= FF_I_TYPE;
+ pict->pict_type= AV_PICTURE_TYPE_I;
s->keyframe=1;
s->current_picture.key_frame=1;
goto redo_frame;
if(!QUANTIZE2)
quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
if(orientation==0)
- decorrelate(s, b, b->ibuf, b->stride, pict->pict_type == FF_P_TYPE, 0);
+ decorrelate(s, b, b->ibuf, b->stride, pict->pict_type == AV_PICTURE_TYPE_P, 0);
encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
assert(b->parent==NULL || b->parent->stride == b->stride*2);
if(orientation==0)
predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
}else{
//ME/MC only
- if(pict->pict_type == FF_I_TYPE){
+ if(pict->pict_type == AV_PICTURE_TYPE_I){
for(y=0; y<h; y++){
for(x=0; x<w; x++){
s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]=
SnowContext *s = avctx->priv_data;
common_end(s);
+ if (s->input_picture.data[0])
+ avctx->release_buffer(avctx, &s->input_picture);
av_free(avctx->stats_out);
return 0;
}
-AVCodec snow_encoder = {
+AVCodec ff_snow_encoder = {
"snow",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_SNOW,
sizeof(SnowContext),
encode_init,
projects / ffmpeg / blobdiff