dwt: K&R prettyprinting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>

2 files changed, 713 insertions, 553 deletions

diff --git a/libavcodec/dwt.c b/libavcodec/dwt.c
index 2c5b56ca48..f9577fd1bd 100644
--- a/libavcodec/dwt.c
+++ b/libavcodec/dwt.c
@@ -22,27 +22,28 @@
 #include "dsputil.h"
 #include "dwt.h"
 
-void ff_slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer)
+void ff_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->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;
 }
 
-IDWTELEM * ff_slice_buffer_load_line(slice_buffer * buf, int line)
+IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line)
 {
-    IDWTELEM * buffer;
+    IDWTELEM *buffer;
 
     assert(buf->data_stack_top >= 0);
 //  assert(!buf->line[line]);
@@ -56,9 +57,9 @@ IDWTELEM * ff_slice_buffer_load_line(slice_buffer * buf, int line)
     return buffer;
 }
 
-void ff_slice_buffer_release(slice_buffer * buf, int line)
+void ff_slice_buffer_release(slice_buffer *buf, int line)
 {
-    IDWTELEM * buffer;
+    IDWTELEM *buffer;
 
     assert(line >= 0 && line < buf->line_count);
     assert(buf->line[line]);
@@ -66,713 +67,844 @@ void ff_slice_buffer_release(slice_buffer * buf, int line)
     buffer = buf->line[line];
     buf->data_stack_top++;
     buf->data_stack[buf->data_stack_top] = buffer;
-    buf->line[line] = NULL;
+    buf->line[line]                      = NULL;
 }
 
-void ff_slice_buffer_flush(slice_buffer * buf)
+void ff_slice_buffer_flush(slice_buffer *buf)
 {
     int i;
-    for(i = 0; i < buf->line_count; i++){
+    for (i = 0; i < buf->line_count; i++)
         if (buf->line[i])
             ff_slice_buffer_release(buf, i);
-    }
 }
 
-void ff_slice_buffer_destroy(slice_buffer * buf)
+void ff_slice_buffer_destroy(slice_buffer *buf)
 {
     int i;
     ff_slice_buffer_flush(buf);
 
-    for(i = buf->data_count - 1; i >= 0; i--){
+    for (i = buf->data_count - 1; i >= 0; i--)
         av_freep(&buf->data_stack[i]);
-    }
     av_freep(&buf->data_stack);
     av_freep(&buf->line);
 }
 
-static inline int mirror(int v, int m){
-    while((unsigned)v > (unsigned)m){
-        v=-v;
-        if(v<0) v+= 2*m;
+static inline int mirror(int v, int m)
+{
+    while ((unsigned)v > (unsigned)m) {
+        v = -v;
+        if (v < 0)
+            v += 2 * m;
     }
     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);
+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;
+#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);
-    }
+    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);
-    }
+    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);
+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;
+#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);
-    }
+    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);
+    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);
+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);
+#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);
-    }
+#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){
+static void horizontal_decompose53i(DWTELEM *b, int width)
+{
     DWTELEM temp[width];
-    const int width2= width>>1;
+    const int width2 = width >> 1;
     int x;
-    const int w2= (width+1)>>1;
+    const int w2 = (width + 1) >> 1;
 
-    for(x=0; x<width2; x++){
-        temp[x   ]= b[2*x    ];
-        temp[x+w2]= b[2*x + 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 (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;
+        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);
+    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){
+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;
-    }
+    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){
+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;
-    }
+    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){
+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;
+    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;
+    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)
+            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);
+        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;
+        b0 = b2;
+        b1 = b3;
     }
 }
 
-static void horizontal_decompose97i(DWTELEM *b, int width){
+static void horizontal_decompose97i(DWTELEM *b, int width)
+{
     DWTELEM temp[width];
-    const int w2= (width+1)>>1;
+    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);
+    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){
+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;
-    }
+    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){
+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;
-    }
+    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){
+static void vertical_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
+                                    int width)
+{
     int i;
 
-    for(i=0; i<width; i++){
+    for (i = 0; i < width; i++)
 #ifdef liftS
-        b1[i] -= (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
+        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);
+        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){
+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;
-    }
+    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){
+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){
+    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;
+    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){
+static void horizontal_compose53i(IDWTELEM *b, int width)
+{
     IDWTELEM temp[width];
-    const int width2= width>>1;
-    const int w2= (width+1)>>1;
+    const int width2 = width >> 1;
+    const int w2     = (width + 1) >> 1;
     int x;
 
-    for(x=0; x<width2; x++){
-        temp[2*x    ]= b[x   ];
-        temp[2*x + 1]= b[x+w2];
+    for (x = 0; x < width2; x++) {
+        temp[2 * x]     = b[x];
+        temp[2 * x + 1] = b[x + w2];
     }
-    if(width&1)
-        temp[2*x    ]= b[x   ];
+    if (width & 1)
+        temp[2 * x] = b[x];
 
-    b[0] = temp[0] - ((temp[1]+1)>>1);
-    for(x=2; x<width-1; x+=2){
-        b[x  ] = temp[x  ] - ((temp[x-1] + temp[x+1]+2)>>2);
-        b[x-1] = temp[x-1] + ((b   [x-2] + b   [x  ]+1)>>1);
+    b[0] = temp[0] - ((temp[1] + 1) >> 1);
+    for (x = 2; x < width - 1; x += 2) {
+        b[x]     = temp[x]     - ((temp[x - 1] + temp[x + 1] + 2) >> 2);
+        b[x - 1] = temp[x - 1] + ((b[x - 2]    + b[x]        + 1) >> 1);
     }
-    if(width&1){
-        b[x  ] = temp[x  ] - ((temp[x-1]+1)>>1);
-        b[x-1] = temp[x-1] + ((b   [x-2] + b  [x  ]+1)>>1);
-    }else
-        b[x-1] = temp[x-1] + b[x-2];
+    if (width & 1) {
+        b[x]     = temp[x]     - ((temp[x - 1]     + 1) >> 1);
+        b[x - 1] = temp[x - 1] + ((b[x - 2] + b[x] + 1) >> 1);
+    } else
+        b[x - 1] = temp[x - 1] + b[x - 2];
 }
 
-static void vertical_compose53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
+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;
-    }
+    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){
+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;
-    }
+    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_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_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;
+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);
+    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 && y<(unsigned)height){
+    if (y + 1 < (unsigned)height && y < (unsigned)height) {
         int x;
 
-        for(x=0; x<width; x++){
-            b2[x] -= (b1[x] + b3[x] + 2)>>2;
-            b1[x] += (b0[x] + b2[x])>>1;
+        for (x = 0; x < width; x++) {
+            b2[x] -= (b1[x] + b3[x] + 2) >> 2;
+            b1[x] += (b0[x] + b2[x])     >> 1;
         }
-    }else{
-        if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width);
-        if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width);
+    } else {
+        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);
+    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;
+    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;
+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)
+        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);
+    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;
+    cs->b0  = b2;
+    cs->b1  = b3;
+    cs->y  += 2;
 }
 
-static void av_unused spatial_compose53i(IDWTELEM *buffer, int width, int height, int stride){
+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)
+    while (cs.y <= height)
         spatial_compose53i_dy(&cs, buffer, width, height, stride);
 }
 
-
-void ff_snow_horizontal_compose97i(IDWTELEM *b, int width){
+void ff_snow_horizontal_compose97i(IDWTELEM *b, int width)
+{
     IDWTELEM temp[width];
-    const int w2= (width+1)>>1;
+    const int w2 = (width + 1) >> 1;
 
 #if 0 //maybe more understadable but slower
-    inv_lift (temp   , b      , b   +w2, 2, 1, 1, width,  W_DM, W_DO, W_DS, 0, 1);
-    inv_lift (temp+1 , b   +w2, temp   , 2, 1, 2, width,  W_CM, W_CO, W_CS, 1, 1);
+    inv_lift(temp,     b,      b + w2, 2, 1, 1, width, W_DM, W_DO, W_DS, 0, 1);
+    inv_lift(temp + 1, b + w2, temp,   2, 1, 2, width, W_CM, W_CO, W_CS, 1, 1);
 
-    inv_liftS(b      , temp   , temp+1 , 2, 2, 2, width,  W_BM, W_BO, W_BS, 0, 1);
-    inv_lift (b+1    , temp+1 , b      , 2, 2, 2, width,  W_AM, W_AO, W_AS, 1, 0);
+    inv_liftS(b,    temp,     temp + 1, 2, 2, 2, width, W_BM, W_BO, W_BS, 0, 1);
+    inv_lift(b + 1, temp + 1, b,        2, 2, 2, width, W_AM, W_AO, W_AS, 1, 0);
 #else
     int x;
-    temp[0] = b[0] - ((3*b[w2]+2)>>2);
-    for(x=1; x<(width>>1); x++){
-        temp[2*x  ] = b[x     ] - ((3*(b   [x+w2-1] + b[x+w2])+4)>>3);
-        temp[2*x-1] = b[x+w2-1] - temp[2*x-2] - temp[2*x];
-    }
-    if(width&1){
-        temp[2*x  ] = b[x     ] - ((3*b   [x+w2-1]+2)>>2);
-        temp[2*x-1] = b[x+w2-1] - temp[2*x-2] - temp[2*x];
-    }else
-        temp[2*x-1] = b[x+w2-1] - 2*temp[2*x-2];
-
-    b[0] = temp[0] + ((2*temp[0] + temp[1]+4)>>3);
-    for(x=2; x<width-1; x+=2){
-        b[x  ] = temp[x  ] + ((4*temp[x  ] + temp[x-1] + temp[x+1]+8)>>4);
-        b[x-1] = temp[x-1] + ((3*(b  [x-2] + b   [x  ] ))>>1);
-    }
-    if(width&1){
-        b[x  ] = temp[x  ] + ((2*temp[x  ] + temp[x-1]+4)>>3);
-        b[x-1] = temp[x-1] + ((3*(b  [x-2] + b   [x  ] ))>>1);
-    }else
-        b[x-1] = temp[x-1] + 3*b [x-2];
+    temp[0] = b[0] - ((3 * b[w2] + 2) >> 2);
+    for (x = 1; x < (width >> 1); x++) {
+        temp[2 * x]     = b[x] - ((3 * (b[x + w2 - 1] + b[x + w2]) + 4) >> 3);
+        temp[2 * x - 1] = b[x + w2 - 1] - temp[2 * x - 2] - temp[2 * x];
+    }
+    if (width & 1) {
+        temp[2 * x]     = b[x] - ((3 * b[x + w2 - 1] + 2) >> 2);
+        temp[2 * x - 1] = b[x + w2 - 1] - temp[2 * x - 2] - temp[2 * x];
+    } else
+        temp[2 * x - 1] = b[x + w2 - 1] - 2 * temp[2 * x - 2];
+
+    b[0] = temp[0] + ((2 * temp[0] + temp[1] + 4) >> 3);
+    for (x = 2; x < width - 1; x += 2) {
+        b[x]     = temp[x] + ((4 * temp[x] + temp[x - 1] + temp[x + 1] + 8) >> 4);
+        b[x - 1] = temp[x - 1] + ((3 * (b[x - 2] + b[x])) >> 1);
+    }
+    if (width & 1) {
+        b[x]     = temp[x] + ((2 * temp[x] + temp[x - 1] + 4) >> 3);
+        b[x - 1] = temp[x - 1] + ((3 * (b[x - 2] + b[x])) >> 1);
+    } else
+        b[x - 1] = temp[x - 1] + 3 * b[x - 2];
 #endif
 }
 
-static void vertical_compose97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
+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;
-    }
+    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){
+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;
-    }
+    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){
+static void vertical_compose97iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
+                                  int width)
+{
     int i;
 
-    for(i=0; i<width; i++){
+    for (i = 0; i < width; i++)
 #ifdef liftS
-        b1[i] += (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
+        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;
+        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){
+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;
-    }
+    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){
+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;
+    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;
+        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;
+        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;
+        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_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_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(DWTContext *dsp, DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line){
+static void spatial_compose97i_dy_buffered(DWTContext *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){
+    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){
+    } 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)
+    while (cs.y <= height)
         spatial_compose97i_dy(&cs, buffer, width, height, stride);
 }
 
-void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count){
+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;
+    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;
         }
     }
 }
 
-void ff_spatial_idwt_buffered_slice(DWTContext *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;
+void ff_spatial_idwt_buffered_slice(DWTContext *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);
+    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);
+            case DWT_53:
+                spatial_compose53i_dy_buffered(cs + level, slice_buf,
+                                               width >> level,
+                                               height >> level,
+                                               stride_line << level);
                 break;
             }
         }
-    }
 }
 
-static void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){
+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;
+    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;
+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);
+    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);
+            case DWT_53:
+                spatial_compose53i_dy(cs + level, buffer, width >> level,
+                                      height >> level, stride << level);
                 break;
             }
         }
-    }
 }
 
-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);
+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 inline int w_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int w, int h, int type){
+static inline int w_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size,
+                      int w, int h, int type)
+{
     int s, i, j;
-    const int dec_count= w==8 ? 3 : 4;
-    int tmp[32*32];
+    const int dec_count = w == 8 ? 3 : 4;
+    int tmp[32 * 32];
     int level, ori;
-    static const int scale[2][2][4][4]={
-      {
+    static const int scale[2][2][4][4] = {
         {
-            // 9/7 8x8 dec=3
-            {268, 239, 239, 213},
-            {  0, 224, 224, 152},
-            {  0, 135, 135, 110},
-        },{
-            // 9/7 16x16 or 32x32 dec=4
-            {344, 310, 310, 280},
-            {  0, 320, 320, 228},
-            {  0, 175, 175, 136},
-            {  0, 129, 129, 102},
-        }
-      },{
+            { // 9/7 8x8 dec=3
+                { 268, 239, 239, 213 },
+                { 0,   224, 224, 152 },
+                { 0,   135, 135, 110 },
+            },
+            { // 9/7 16x16 or 32x32 dec=4
+                { 344, 310, 310, 280 },
+                { 0,   320, 320, 228 },
+                { 0,   175, 175, 136 },
+                { 0,   129, 129, 102 },
+            }
+        },
         {
-            // 5/3 8x8 dec=3
-            {275, 245, 245, 218},
-            {  0, 230, 230, 156},
-            {  0, 138, 138, 113},
-        },{
-            // 5/3 16x16 or 32x32 dec=4
-            {352, 317, 317, 286},
-            {  0, 328, 328, 233},
-            {  0, 180, 180, 140},
-            {  0, 132, 132, 105},
+            { // 5/3 8x8 dec=3
+                { 275, 245, 245, 218 },
+                { 0,   230, 230, 156 },
+                { 0,   138, 138, 113 },
+            },
+            { // 5/3 16x16 or 32x32 dec=4
+                { 352, 317, 317, 286 },
+                { 0,   328, 328, 233 },
+                { 0,   180, 180, 140 },
+                { 0,   132, 132, 105 },
+            }
         }
-      }
     };
 
     for (i = 0; i < h; i++) {
-        for (j = 0; j < w; j+=4) {
-            tmp[32*i+j+0] = (pix1[j+0] - pix2[j+0])<<4;
-            tmp[32*i+j+1] = (pix1[j+1] - pix2[j+1])<<4;
-            tmp[32*i+j+2] = (pix1[j+2] - pix2[j+2])<<4;
-            tmp[32*i+j+3] = (pix1[j+3] - pix2[j+3])<<4;
+        for (j = 0; j < w; j += 4) {
+            tmp[32 * i + j + 0] = (pix1[j + 0] - pix2[j + 0]) << 4;
+            tmp[32 * i + j + 1] = (pix1[j + 1] - pix2[j + 1]) << 4;
+            tmp[32 * i + j + 2] = (pix1[j + 2] - pix2[j + 2]) << 4;
+            tmp[32 * i + j + 3] = (pix1[j + 3] - pix2[j + 3]) << 4;
         }
         pix1 += line_size;
         pix2 += line_size;
@@ -780,64 +912,70 @@ static inline int w_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, in
 
     ff_spatial_dwt(tmp, w, h, 32, type, dec_count);
 
-    s=0;
-    assert(w==h);
-    for(level=0; level<dec_count; level++){
-        for(ori= level ? 1 : 0; ori<4; ori++){
-            int size= w>>(dec_count-level);
-            int sx= (ori&1) ? size : 0;
-            int stride= 32<<(dec_count-level);
-            int sy= (ori&2) ? stride>>1 : 0;
-
-            for(i=0; i<size; i++){
-                for(j=0; j<size; j++){
-                    int v= tmp[sx + sy + i*stride + j] * scale[type][dec_count-3][level][ori];
+    s = 0;
+    assert(w == h);
+    for (level = 0; level < dec_count; level++)
+        for (ori = level ? 1 : 0; ori < 4; ori++) {
+            int size   = w >> (dec_count - level);
+            int sx     = (ori & 1) ? size : 0;
+            int stride = 32 << (dec_count - level);
+            int sy     = (ori & 2) ? stride >> 1 : 0;
+
+            for (i = 0; i < size; i++)
+                for (j = 0; j < size; j++) {
+                    int v = tmp[sx + sy + i * stride + j] *
+                            scale[type][dec_count - 3][level][ori];
                     s += FFABS(v);
                 }
-            }
         }
-    }
-    assert(s>=0);
-    return s>>9;
+    assert(s >= 0);
+    return s >> 9;
 }
 
-static int w53_8_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size,  8, h, 1);
+static int w53_8_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
+{
+    return w_c(v, pix1, pix2, line_size, 8, h, 1);
 }
 
-static int w97_8_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size,  8, h, 0);
+static int w97_8_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
+{
+    return w_c(v, pix1, pix2, line_size, 8, h, 0);
 }
 
-static int w53_16_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
+static int w53_16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
+{
     return w_c(v, pix1, pix2, line_size, 16, h, 1);
 }
 
-static int w97_16_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
+static int w97_16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
+{
     return w_c(v, pix1, pix2, line_size, 16, h, 0);
 }
 
-int ff_w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
+int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
+{
     return w_c(v, pix1, pix2, line_size, 32, h, 1);
 }
 
-int ff_w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
+int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
+{
     return w_c(v, pix1, pix2, line_size, 32, h, 0);
 }
 
 void ff_dsputil_init_dwt(DSPContext *c)
 {
-    c->w53[0]= w53_16_c;
-    c->w53[1]= w53_8_c;
-    c->w97[0]= w97_16_c;
-    c->w97[1]= w97_8_c;
+    c->w53[0] = w53_16_c;
+    c->w53[1] = w53_8_c;
+    c->w97[0] = w97_16_c;
+    c->w97[1] = w97_8_c;
 }
 
 void ff_dwt_init(DWTContext *c)
 {
-    c->vertical_compose97i = ff_snow_vertical_compose97i;
+    c->vertical_compose97i   = ff_snow_vertical_compose97i;
     c->horizontal_compose97i = ff_snow_horizontal_compose97i;
-    c->inner_add_yblock = ff_snow_inner_add_yblock;
+    c->inner_add_yblock      = ff_snow_inner_add_yblock;
 
-    if (HAVE_MMX) ff_dwt_init_x86(c);
+    if (HAVE_MMX)
+        ff_dwt_init_x86(c);
 }
diff --git a/libavcodec/dwt.h b/libavcodec/dwt.h
index fc73fe7e8e..6c28447cab 100644
--- a/libavcodec/dwt.h
+++ b/libavcodec/dwt.h
@@ -34,21 +34,27 @@ typedef struct {
     int y;
 } DWTCompose;
 
-/** Used to minimize the amount of memory used in order to optimize cache performance. **/
+/** Used to minimize the amount of memory used in order to
+ *  optimize cache performance. **/
 typedef struct slice_buffer_s {
-    IDWTELEM * * line; ///< For use by idwt and predict_slices.
-    IDWTELEM * * data_stack; ///< Used for internal purposes.
+    IDWTELEM **line;   ///< For use by idwt and predict_slices.
+    IDWTELEM **data_stack;   ///< Used for internal purposes.
     int data_stack_top;
     int line_count;
     int line_width;
     int data_count;
-    IDWTELEM * base_buffer; ///< Buffer that this structure is caching.
+    IDWTELEM *base_buffer;  ///< Buffer that this structure is caching.
 } slice_buffer;
 
 typedef struct DWTContext {
-    void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
+    void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
+                                IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
+                                int width);
     void (*horizontal_compose97i)(IDWTELEM *b, int width);
-    void (*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);
+    void (*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);
 } DWTContext;
 
 #define MAX_DECOMPOSITIONS 8
@@ -126,27 +132,43 @@ typedef struct DWTContext {
 #define W_DS 9
 #endif
 
-#define slice_buffer_get_line(slice_buf, line_num) ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] : ff_slice_buffer_load_line((slice_buf), (line_num)))
-//#define slice_buffer_get_line(slice_buf, line_num) (ff_slice_buffer_load_line((slice_buf), (line_num)))
-
-void ff_slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer);
-void ff_slice_buffer_release(slice_buffer * buf, int line);
-void ff_slice_buffer_flush(slice_buffer * buf);
-void ff_slice_buffer_destroy(slice_buffer * buf);
-IDWTELEM * ff_slice_buffer_load_line(slice_buffer * buf, int line);
-
-void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
+#define slice_buffer_get_line(slice_buf, line_num)                          \
+    ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num]              \
+                                 : ff_slice_buffer_load_line((slice_buf),   \
+                                                             (line_num)))
+
+void ff_slice_buffer_init(slice_buffer *buf, int line_count,
+                          int max_allocated_lines, int line_width,
+                          IDWTELEM *base_buffer);
+void ff_slice_buffer_release(slice_buffer *buf, int line);
+void ff_slice_buffer_flush(slice_buffer *buf);
+void ff_slice_buffer_destroy(slice_buffer *buf);
+IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line);
+
+void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
+                                 IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
+                                 int width);
 void ff_snow_horizontal_compose97i(IDWTELEM *b, int width);
-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);
-
-int ff_w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
-int ff_w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
-
-void ff_spatial_dwt(int *buffer, int width, int height, int stride, int type, int decomposition_count);
-
-void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count);
-void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs, slice_buffer * slice_buf, int width, int height, int stride_line, int type, int decomposition_count, int y);
-void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count);
+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);
+
+int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
+int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
+
+void ff_spatial_dwt(int *buffer, int width, int height, int stride, int type,
+                    int decomposition_count);
+
+void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width,
+                                   int height, int stride_line, int type,
+                                   int decomposition_count);
+void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs,
+                                    slice_buffer *slice_buf, int width,
+                                    int height, int stride_line, int type,
+                                    int decomposition_count, int y);
+void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride,
+                     int type, int decomposition_count);
 
 void ff_dwt_init(DWTContext *c);
 void ff_dwt_init_x86(DWTContext *c);