jpegls: K&R formatting cosmetics

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

5 files changed, 336 insertions, 266 deletions

diff --git a/libavcodec/jpegls.c b/libavcodec/jpegls.c
index bbe1a04..52a4500 100644
--- a/libavcodec/jpegls.c
+++ b/libavcodec/jpegls.c
@@ -27,63 +27,76 @@
 
 #include "jpegls.h"
 
-void ff_jpegls_init_state(JLSState *state){
+void ff_jpegls_init_state(JLSState *state)
+{
     int i;
 
     state->twonear = state->near * 2 + 1;
     state->range   = (state->maxval + state->twonear - 1) / state->twonear + 1;
 
     // QBPP = ceil(log2(RANGE))
-    for(state->qbpp = 0; (1 << state->qbpp) < state->range; state->qbpp++);
+    for (state->qbpp = 0; (1 << state->qbpp) < state->range; state->qbpp++)
+        ;
 
-    if(state->bpp < 8)
-        state->limit = 16 + 2 * state->bpp - state->qbpp;
+    if (state->bpp < 8)
+        state->limit = 2 * state->bpp - state->qbpp + 16;
     else
         state->limit = 4 * state->bpp - state->qbpp;
 
-    for(i = 0; i < 367; i++) {
+    for (i = 0; i < 367; i++) {
         state->A[i] = FFMAX(state->range + 32 >> 6, 2);
         state->N[i] = 1;
     }
-
 }
 
 /**
  * Custom value clipping function used in T1, T2, T3 calculation
  */
-static inline int iso_clip(int v, int vmin, int vmax){
-    if(v > vmax || v < vmin) return vmin;
-    else                     return v;
+static inline int iso_clip(int v, int vmin, int vmax)
+{
+    if (v > vmax || v < vmin)
+        return vmin;
+    else
+        return v;
 }
 
-void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all){
-    const int basic_t1= 3;
-    const int basic_t2= 7;
-    const int basic_t3= 21;
+void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all)
+{
+    const int basic_t1 = 3;
+    const int basic_t2 = 7;
+    const int basic_t3 = 21;
     int factor;
 
-    if(s->maxval==0 || reset_all) s->maxval= (1 << s->bpp) - 1;
+    if (s->maxval == 0 || reset_all)
+        s->maxval = (1 << s->bpp) - 1;
 
-    if(s->maxval >=128){
+    if (s->maxval >= 128) {
         factor = FFMIN(s->maxval, 4095) + 128 >> 8;
 
-        if(s->T1==0     || reset_all)
-            s->T1= iso_clip(factor*(basic_t1-2) + 2 + 3*s->near, s->near+1, s->maxval);
-        if(s->T2==0     || reset_all)
-            s->T2= iso_clip(factor*(basic_t2-3) + 3 + 5*s->near, s->T1, s->maxval);
-        if(s->T3==0     || reset_all)
-            s->T3= iso_clip(factor*(basic_t3-4) + 4 + 7*s->near, s->T2, s->maxval);
-    }else{
-        factor= 256 / (s->maxval + 1);
+        if (s->T1 == 0 || reset_all)
+            s->T1 = iso_clip(factor * (basic_t1 - 2) + 2 + 3 * s->near,
+                             s->near + 1, s->maxval);
+        if (s->T2 == 0 || reset_all)
+            s->T2 = iso_clip(factor * (basic_t2 - 3) + 3 + 5 * s->near,
+                             s->T1, s->maxval);
+        if (s->T3 == 0 || reset_all)
+            s->T3 = iso_clip(factor * (basic_t3 - 4) + 4 + 7 * s->near,
+                             s->T2, s->maxval);
+    } else {
+        factor = 256 / (s->maxval + 1);
 
-        if(s->T1==0     || reset_all)
-            s->T1= iso_clip(FFMAX(2, basic_t1/factor + 3*s->near), s->near+1, s->maxval);
-        if(s->T2==0     || reset_all)
-            s->T2= iso_clip(FFMAX(3, basic_t2/factor + 5*s->near), s->T1, s->maxval);
-        if(s->T3==0     || reset_all)
-            s->T3= iso_clip(FFMAX(4, basic_t3/factor + 7*s->near), s->T2, s->maxval);
+        if (s->T1 == 0 || reset_all)
+            s->T1 = iso_clip(FFMAX(2, basic_t1 / factor + 3 * s->near),
+                             s->near + 1, s->maxval);
+        if (s->T2 == 0 || reset_all)
+            s->T2 = iso_clip(FFMAX(3, basic_t2 / factor + 5 * s->near),
+                             s->T1, s->maxval);
+        if (s->T3 == 0 || reset_all)
+            s->T3 = iso_clip(FFMAX(4, basic_t3 / factor + 7 * s->near),
+                             s->T2, s->maxval);
     }
 
-    if(s->reset==0  || reset_all) s->reset= 64;
+    if (s->reset == 0 || reset_all)
+        s->reset = 64;
     av_dlog(NULL, "[JPEG-LS RESET] T=%i,%i,%i\n", s->T1, s->T2, s->T3);
 }
diff --git a/libavcodec/jpegls.h b/libavcodec/jpegls.h
index 18c71a8..4bf9562 100644
--- a/libavcodec/jpegls.h
+++ b/libavcodec/jpegls.h
@@ -28,21 +28,21 @@
 #ifndef AVCODEC_JPEGLS_H
 #define AVCODEC_JPEGLS_H
 
-#include "avcodec.h"
 #include "libavutil/common.h"
+#include "avcodec.h"
 
-typedef struct JpeglsContext{
+typedef struct JpeglsContext {
     AVCodecContext *avctx;
     AVFrame picture;
-}JpeglsContext;
+} JpeglsContext;
 
-typedef struct JLSState{
+typedef struct JLSState {
     int T1, T2, T3;
     int A[367], B[367], C[365], N[367];
     int limit, reset, bpp, qbpp, maxval, range;
     int near, twonear;
     int run_index[3];
-}JLSState;
+} JLSState;
 
 extern const uint8_t ff_log2_run[32];
 
@@ -54,19 +54,29 @@ void ff_jpegls_init_state(JLSState *state);
 /**
  * Calculate quantized gradient value, used for context determination
  */
-static inline int ff_jpegls_quantize(JLSState *s, int v){ //FIXME optimize
-    if(v==0) return 0;
-    if(v < 0){
-        if(v <= -s->T3) return -4;
-        if(v <= -s->T2) return -3;
-        if(v <= -s->T1) return -2;
-        if(v <  -s->near) return -1;
+static inline int ff_jpegls_quantize(JLSState *s, int v)
+{
+    if (v == 0)
         return 0;
-    }else{
-        if(v <= s->near) return 0;
-        if(v <  s->T1) return 1;
-        if(v <  s->T2) return 2;
-        if(v <  s->T3) return 3;
+    if (v < 0) {
+        if (v <= -s->T3)
+            return -4;
+        if (v <= -s->T2)
+            return -3;
+        if (v <= -s->T1)
+            return -2;
+        if (v < -s->near)
+            return -1;
+        return 0;
+    } else {
+        if (v <= s->near)
+            return 0;
+        if (v < s->T1)
+            return 1;
+        if (v < s->T2)
+            return 2;
+        if (v < s->T3)
+            return 3;
         return 4;
     }
 }
@@ -76,37 +86,39 @@ static inline int ff_jpegls_quantize(JLSState *s, int v){ //FIXME optimize
  */
 void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all);
 
-
-static inline void ff_jpegls_downscale_state(JLSState *state, int Q){
-    if(state->N[Q] == state->reset){
-        state->A[Q] >>=1;
-        state->B[Q] >>=1;
-        state->N[Q] >>=1;
+static inline void ff_jpegls_downscale_state(JLSState *state, int Q)
+{
+    if (state->N[Q] == state->reset) {
+        state->A[Q] >>= 1;
+        state->B[Q] >>= 1;
+        state->N[Q] >>= 1;
     }
     state->N[Q]++;
 }
 
-static inline int ff_jpegls_update_state_regular(JLSState *state, int Q, int err){
+static inline int ff_jpegls_update_state_regular(JLSState *state,
+                                                 int Q, int err)
+{
     state->A[Q] += FFABS(err);
-    err *= state->twonear;
+    err         *= state->twonear;
     state->B[Q] += err;
 
     ff_jpegls_downscale_state(state, Q);
 
-    if(state->B[Q] <= -state->N[Q]) {
-        state->B[Q]= FFMAX(state->B[Q] + state->N[Q], 1-state->N[Q]);
-        if(state->C[Q] > -128)
+    if (state->B[Q] <= -state->N[Q]) {
+        state->B[Q] = FFMAX(state->B[Q] + state->N[Q], 1 - state->N[Q]);
+        if (state->C[Q] > -128)
             state->C[Q]--;
-    }else if(state->B[Q] > 0){
-        state->B[Q]= FFMIN(state->B[Q] - state->N[Q], 0);
-        if(state->C[Q] < 127)
+    } else if (state->B[Q] > 0) {
+        state->B[Q] = FFMIN(state->B[Q] - state->N[Q], 0);
+        if (state->C[Q] < 127)
             state->C[Q]++;
     }
 
     return err;
 }
 
-#define R(a, i   ) (bits == 8 ?  ((uint8_t*)(a))[i]    :  ((uint16_t*)(a))[i]  )
-#define W(a, i, v) (bits == 8 ? (((uint8_t*)(a))[i]=v) : (((uint16_t*)(a))[i]=v))
+#define R(a, i)    (bits == 8 ?  ((uint8_t *)(a))[i]      :  ((uint16_t *)(a))[i])
+#define W(a, i, v) (bits == 8 ? (((uint8_t *)(a))[i] = v) : (((uint16_t *)(a))[i] = v))
 
 #endif /* AVCODEC_JPEGLS_H */
diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
index 5f01631..6d884a4 100644
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@@ -34,18 +34,16 @@
 #include "jpegls.h"
 #include "jpeglsdec.h"
 
-
 /*
-* Uncomment this to significantly speed up decoding of broken JPEG-LS
-* (or test broken JPEG-LS decoder) and slow down ordinary decoding a bit.
-*
-* There is no Golomb code with length >= 32 bits possible, so check and
-* avoid situation of 32 zeros, Libav Golomb decoder is painfully slow
-* on this errors.
-*/
+ * Uncomment this to significantly speed up decoding of broken JPEG-LS
+ * (or test broken JPEG-LS decoder) and slow down ordinary decoding a bit.
+ *
+ * There is no Golomb code with length >= 32 bits possible, so check and
+ * avoid situation of 32 zeros, Libav Golomb decoder is painfully slow
+ * on this errors.
+ */
 //#define JLS_BROKEN
 
-
 /**
  * Decode LSE block with initialization parameters
  */
@@ -56,13 +54,13 @@ int ff_jpegls_decode_lse(MJpegDecodeContext *s)
     skip_bits(&s->gb, 16);  /* length: FIXME: verify field validity */
     id = get_bits(&s->gb, 8);
 
-    switch(id){
+    switch (id) {
     case 1:
-        s->maxval= get_bits(&s->gb, 16);
-        s->t1= get_bits(&s->gb, 16);
-        s->t2= get_bits(&s->gb, 16);
-        s->t3= get_bits(&s->gb, 16);
-        s->reset= get_bits(&s->gb, 16);
+        s->maxval = get_bits(&s->gb, 16);
+        s->t1     = get_bits(&s->gb, 16);
+        s->t2     = get_bits(&s->gb, 16);
+        s->t3     = get_bits(&s->gb, 16);
+        s->reset  = get_bits(&s->gb, 16);
 
 //        ff_jpegls_reset_coding_parameters(s, 0);
         //FIXME quant table?
@@ -86,27 +84,30 @@ int ff_jpegls_decode_lse(MJpegDecodeContext *s)
 /**
  * Get context-dependent Golomb code, decode it and update context
  */
-static inline int ls_get_code_regular(GetBitContext *gb, JLSState *state, int Q){
+static inline int ls_get_code_regular(GetBitContext *gb, JLSState *state, int Q)
+{
     int k, ret;
 
-    for(k = 0; (state->N[Q] << k) < state->A[Q]; k++);
+    for (k = 0; (state->N[Q] << k) < state->A[Q]; k++)
+        ;
 
 #ifdef JLS_BROKEN
-    if(!show_bits_long(gb, 32))return -1;
+    if (!show_bits_long(gb, 32))
+        return -1;
 #endif
     ret = get_ur_golomb_jpegls(gb, k, state->limit, state->qbpp);
 
     /* decode mapped error */
-    if(ret & 1)
+    if (ret & 1)
         ret = -(ret + 1 >> 1);
     else
         ret >>= 1;
 
     /* for NEAR=0, k=0 and 2*B[Q] <= - N[Q] mapping is reversed */
-    if(!state->near && !k && (2 * state->B[Q] <= -state->N[Q]))
+    if (!state->near && !k && (2 * state->B[Q] <= -state->N[Q]))
         ret = -(ret + 1);
 
-    ret= ff_jpegls_update_state_regular(state, Q, ret);
+    ret = ff_jpegls_update_state_regular(state, Q, ret);
 
     return ret;
 }
@@ -114,28 +115,33 @@ static inline int ls_get_code_regular(GetBitContext *gb, JLSState *state, int Q)
 /**
  * Get Golomb code, decode it and update state for run termination
  */
-static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RItype, int limit_add){
+static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state,
+                                      int RItype, int limit_add)
+{
     int k, ret, temp, map;
     int Q = 365 + RItype;
 
-    temp=  state->A[Q];
-    if(RItype)
+    temp = state->A[Q];
+    if (RItype)
         temp += state->N[Q] >> 1;
 
-    for(k = 0; (state->N[Q] << k) < temp; k++);
+    for (k = 0; (state->N[Q] << k) < temp; k++)
+        ;
 
 #ifdef JLS_BROKEN
-    if(!show_bits_long(gb, 32))return -1;
+    if (!show_bits_long(gb, 32))
+        return -1;
 #endif
-    ret = get_ur_golomb_jpegls(gb, k, state->limit - limit_add - 1, state->qbpp);
+    ret = get_ur_golomb_jpegls(gb, k, state->limit - limit_add - 1,
+                               state->qbpp);
 
     /* decode mapped error */
     map = 0;
-    if(!k && (RItype || ret) && (2 * state->B[Q] < state->N[Q]))
+    if (!k && (RItype || ret) && (2 * state->B[Q] < state->N[Q]))
         map = 1;
     ret += RItype + map;
 
-    if(ret & 1){
+    if (ret & 1) {
         ret = map - (ret + 1 >> 1);
         state->B[Q]++;
     } else {
@@ -144,7 +150,7 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RI
 
     /* update state */
     state->A[Q] += FFABS(ret) - RItype;
-    ret *= state->twonear;
+    ret         *= state->twonear;
     ff_jpegls_downscale_state(state, Q);
 
     return ret;
@@ -153,12 +159,15 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RI
 /**
  * Decode one line of image
  */
-static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *last, void *dst, int last2, int w, int stride, int comp, int bits){
+static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s,
+                                  void *last, void *dst, int last2, int w,
+                                  int stride, int comp, int bits)
+{
     int i, x = 0;
     int Ra, Rb, Rc, Rd;
     int D0, D1, D2;
 
-    while(x < w) {
+    while (x < w) {
         int err, pred;
 
         /* compute gradients */
@@ -170,49 +179,51 @@ static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *
         D1 = Rb - Rc;
         D2 = Rc - Ra;
         /* run mode */
-        if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) {
+        if ((FFABS(D0) <= state->near) &&
+            (FFABS(D1) <= state->near) &&
+            (FFABS(D2) <= state->near)) {
             int r;
             int RItype;
 
             /* decode full runs while available */
-            while(get_bits1(&s->gb)) {
+            while (get_bits1(&s->gb)) {
                 int r;
                 r = 1 << ff_log2_run[state->run_index[comp]];
-                if(x + r * stride > w) {
+                if (x + r * stride > w)
                     r = (w - x) / stride;
-                }
-                for(i = 0; i < r; i++) {
+                for (i = 0; i < r; i++) {
                     W(dst, x, Ra);
                     x += stride;
                 }
                 /* if EOL reached, we stop decoding */
                 if (r != 1 << ff_log2_run[state->run_index[comp]])
                     return;
-                if(state->run_index[comp] < 31)
+                if (state->run_index[comp] < 31)
                     state->run_index[comp]++;
-                if(x + stride > w)
+                if (x + stride > w)
                     return;
             }
             /* decode aborted run */
             r = ff_log2_run[state->run_index[comp]];
-            if(r)
+            if (r)
                 r = get_bits_long(&s->gb, r);
-            for(i = 0; i < r; i++) {
+            for (i = 0; i < r; i++) {
                 W(dst, x, Ra);
                 x += stride;
             }
 
             /* decode run termination value */
-            Rb = R(last, x);
+            Rb     = R(last, x);
             RItype = (FFABS(Ra - Rb) <= state->near) ? 1 : 0;
-            err = ls_get_code_runterm(&s->gb, state, RItype, ff_log2_run[state->run_index[comp]]);
-            if(state->run_index[comp])
+            err    = ls_get_code_runterm(&s->gb, state, RItype,
+                                         ff_log2_run[state->run_index[comp]]);
+            if (state->run_index[comp])
                 state->run_index[comp]--;
 
-            if(state->near && RItype){
+            if (state->near && RItype) {
                 pred = Ra + err;
             } else {
-                if(Rb < Ra)
+                if (Rb < Ra)
                     pred = Rb - err;
                 else
                     pred = Rb + err;
@@ -220,31 +231,33 @@ static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *
         } else { /* regular mode */
             int context, sign;
 
-            context = ff_jpegls_quantize(state, D0) * 81 + ff_jpegls_quantize(state, D1) * 9 + ff_jpegls_quantize(state, D2);
-            pred = mid_pred(Ra, Ra + Rb - Rc, Rb);
+            context = ff_jpegls_quantize(state, D0) * 81 +
+                      ff_jpegls_quantize(state, D1) *  9 +
+                      ff_jpegls_quantize(state, D2);
+            pred    = mid_pred(Ra, Ra + Rb - Rc, Rb);
 
-            if(context < 0){
+            if (context < 0) {
                 context = -context;
-                sign = 1;
-            }else{
+                sign    = 1;
+            } else {
                 sign = 0;
             }
 
-            if(sign){
+            if (sign) {
                 pred = av_clip(pred - state->C[context], 0, state->maxval);
-                err = -ls_get_code_regular(&s->gb, state, context);
+                err  = -ls_get_code_regular(&s->gb, state, context);
             } else {
                 pred = av_clip(pred + state->C[context], 0, state->maxval);
-                err = ls_get_code_regular(&s->gb, state, context);
+                err  = ls_get_code_regular(&s->gb, state, context);
             }
 
             /* we have to do something more for near-lossless coding */
             pred += err;
         }
-        if(state->near){
-            if(pred < -state->near)
+        if (state->near) {
+            if (pred < -state->near)
                 pred += state->range * state->twonear;
-            else if(pred > state->maxval + state->near)
+            else if (pred > state->maxval + state->near)
                 pred -= state->range * state->twonear;
             pred = av_clip(pred, 0, state->maxval);
         }
@@ -255,7 +268,9 @@ static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *
     }
 }
 
-int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transform, int ilv){
+int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
+                             int point_transform, int ilv)
+{
     int i, t = 0;
     uint8_t *zero, *last, *cur;
     JLSState *state;
@@ -263,43 +278,45 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
 
     zero = av_mallocz(s->picture_ptr->linesize[0]);
     last = zero;
-    cur = s->picture_ptr->data[0];
+    cur  = s->picture_ptr->data[0];
 
     state = av_mallocz(sizeof(JLSState));
     /* initialize JPEG-LS state from JPEG parameters */
-    state->near = near;
-    state->bpp = (s->bits < 2) ? 2 : s->bits;
+    state->near   = near;
+    state->bpp    = (s->bits < 2) ? 2 : s->bits;
     state->maxval = s->maxval;
-    state->T1 = s->t1;
-    state->T2 = s->t2;
-    state->T3 = s->t3;
-    state->reset = s->reset;
+    state->T1     = s->t1;
+    state->T2     = s->t2;
+    state->T3     = s->t3;
+    state->reset  = s->reset;
     ff_jpegls_reset_coding_parameters(state, 0);
     ff_jpegls_init_state(state);
 
-    if(s->bits <= 8)
+    if (s->bits <= 8)
         shift = point_transform + (8 - s->bits);
     else
         shift = point_transform + (16 - s->bits);
 
-    av_dlog(s->avctx, "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) RESET=%i, LIMIT=%i, qbpp=%i, RANGE=%i\n",
+    av_dlog(s->avctx,
+            "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) "
+            "RESET=%i, LIMIT=%i, qbpp=%i, RANGE=%i\n",
             s->width, s->height, state->near, state->maxval,
             state->T1, state->T2, state->T3,
             state->reset, state->limit, state->qbpp, state->range);
     av_dlog(s->avctx, "JPEG params: ILV=%i Pt=%i BPP=%i, scan = %i\n",
             ilv, point_transform, s->bits, s->cur_scan);
-    if(ilv == 0) { /* separate planes */
-        off = s->cur_scan - 1;
+    if (ilv == 0) { /* separate planes */
+        off    = s->cur_scan - 1;
         stride = (s->nb_components > 1) ? 3 : 1;
-        width = s->width * stride;
-        cur += off;
-        for(i = 0; i < s->height; i++) {
-            if(s->bits <= 8){
-                ls_decode_line(state, s, last, cur, t, width, stride, off,  8);
+        width  = s->width * stride;
+        cur   += off;
+        for (i = 0; i < s->height; i++) {
+            if (s->bits <= 8) {
+                ls_decode_line(state, s, last, cur, t, width, stride, off, 8);
                 t = last[0];
-            }else{
+            } else {
                 ls_decode_line(state, s, last, cur, t, width, stride, off, 16);
-                t = *((uint16_t*)last);
+                t = *((uint16_t *)last);
             }
             last = cur;
             cur += s->picture_ptr->linesize[0];
@@ -309,14 +326,15 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
                 skip_bits(&s->gb, 16); /* skip RSTn */
             }
         }
-    } else if(ilv == 1) { /* line interleaving */
+    } else if (ilv == 1) { /* line interleaving */
         int j;
-        int Rc[3] = {0, 0, 0};
+        int Rc[3] = { 0, 0, 0 };
         memset(cur, 0, s->picture_ptr->linesize[0]);
         width = s->width * 3;
-        for(i = 0; i < s->height; i++) {
-            for(j = 0; j < 3; j++) {
-                ls_decode_line(state, s, last + j, cur + j, Rc[j], width, 3, j, 8);
+        for (i = 0; i < s->height; i++) {
+            for (j = 0; j < 3; j++) {
+                ls_decode_line(state, s, last + j, cur + j,
+                               Rc[j], width, 3, j, 8);
                 Rc[j] = last[j];
 
                 if (s->restart_interval && !--s->restart_count) {
@@ -327,35 +345,34 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
             last = cur;
             cur += s->picture_ptr->linesize[0];
         }
-    } else if(ilv == 2) { /* sample interleaving */
-        av_log(s->avctx, AV_LOG_ERROR, "Sample interleaved images are not supported.\n");
+    } else if (ilv == 2) { /* sample interleaving */
+        av_log(s->avctx, AV_LOG_ERROR,
+               "Sample interleaved images are not supported.\n");
         av_free(state);
         av_free(zero);
         return -1;
     }
 
-    if(shift){ /* we need to do point transform or normalize samples */
+    if (shift) { /* we need to do point transform or normalize samples */
         int x, w;
 
         w = s->width * s->nb_components;
 
-        if(s->bits <= 8){
+        if (s->bits <= 8) {
             uint8_t *src = s->picture_ptr->data[0];
 
-            for(i = 0; i < s->height; i++){
-                for(x = off; x < w; x+= stride){
+            for (i = 0; i < s->height; i++) {
+                for (x = off; x < w; x += stride)
                     src[x] <<= shift;
-                }
                 src += s->picture_ptr->linesize[0];
             }
-        }else{
-            uint16_t *src = (uint16_t*) s->picture_ptr->data[0];
+        } else {
+            uint16_t *src = (uint16_t *)s->picture_ptr->data[0];
 
-            for(i = 0; i < s->height; i++){
-                for(x = 0; x < w; x++){
+            for (i = 0; i < s->height; i++) {
+                for (x = 0; x < w; x++)
                     src[x] <<= shift;
-                }
-                src += s->picture_ptr->linesize[0]/2;
+                src += s->picture_ptr->linesize[0] / 2;
             }
         }
     }
@@ -365,9 +382,9 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
     return 0;
 }
 
-
 AVCodec ff_jpegls_decoder = {
     .name           = "jpegls",
+    .long_name      = NULL_IF_CONFIG_SMALL("JPEG-LS"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_JPEGLS,
     .priv_data_size = sizeof(MJpegDecodeContext),
@@ -375,5 +392,4 @@ AVCodec ff_jpegls_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = ff_mjpeg_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("JPEG-LS"),
 };
diff --git a/libavcodec/jpeglsdec.h b/libavcodec/jpeglsdec.h
index 4732822..d60a87b 100644
--- a/libavcodec/jpeglsdec.h
+++ b/libavcodec/jpeglsdec.h
@@ -36,6 +36,7 @@
  */
 int ff_jpegls_decode_lse(MJpegDecodeContext *s);
 
-int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transform, int ilv);
+int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
+                             int point_transform, int ilv);
 
 #endif /* AVCODEC_JPEGLSDEC_H */
diff --git a/libavcodec/jpeglsenc.c b/libavcodec/jpeglsenc.c
index 4d219cb..9f1fc1f 100644
--- a/libavcodec/jpeglsenc.c
+++ b/libavcodec/jpeglsenc.c
@@ -33,24 +33,26 @@
 #include "mjpeg.h"
 #include "jpegls.h"
 
-
 /**
  * Encode error from regular symbol
  */
-static inline void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q, int err){
+static inline void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q,
+                                     int err)
+{
     int k;
     int val;
     int map;
 
-    for(k = 0; (state->N[Q] << k) < state->A[Q]; k++);
+    for (k = 0; (state->N[Q] << k) < state->A[Q]; k++)
+        ;
 
     map = !state->near && !k && (2 * state->B[Q] <= -state->N[Q]);
 
-    if(err < 0)
+    if (err < 0)
         err += state->range;
     if (err >= (state->range + 1 >> 1)) {
         err -= state->range;
-        val = 2 * FFABS(err) - 1 - map;
+        val  = 2 * FFABS(err) - 1 - map;
     } else
         val = 2 * err + map;
 
@@ -62,27 +64,30 @@ static inline void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q,
 /**
  * Encode error from run termination
  */
-static inline void ls_encode_runterm(JLSState *state, PutBitContext *pb, int RItype, int err, int limit_add){
+static inline void ls_encode_runterm(JLSState *state, PutBitContext *pb,
+                                     int RItype, int err, int limit_add)
+{
     int k;
     int val, map;
     int Q = 365 + RItype;
     int temp;
 
     temp = state->A[Q];
-    if(RItype)
+    if (RItype)
         temp += state->N[Q] >> 1;
-    for(k = 0; (state->N[Q] << k) < temp; k++);
+    for (k = 0; (state->N[Q] << k) < temp; k++)
+        ;
     map = 0;
-    if(!k && err && (2 * state->B[Q] < state->N[Q]))
+    if (!k && err && (2 * state->B[Q] < state->N[Q]))
         map = 1;
 
-    if(err < 0)
-        val = - (2 * err) - 1 - RItype + map;
+    if (err < 0)
+        val = -(2 * err) - 1 - RItype + map;
     else
         val = 2 * err - RItype - map;
     set_ur_golomb_jpegls(pb, val, k, state->limit - limit_add - 1, state->qbpp);
 
-    if(err < 0)
+    if (err < 0)
         state->B[Q]++;
     state->A[Q] += (val + 1 - RItype) >> 1;
 
@@ -92,19 +97,21 @@ static inline void ls_encode_runterm(JLSState *state, PutBitContext *pb, int RIt
 /**
  * Encode run value as specified by JPEG-LS standard
  */
-static inline void ls_encode_run(JLSState *state, PutBitContext *pb, int run, int comp, int trail){
-    while(run >= (1 << ff_log2_run[state->run_index[comp]])){
+static inline void ls_encode_run(JLSState *state, PutBitContext *pb, int run,
+                                 int comp, int trail)
+{
+    while (run >= (1 << ff_log2_run[state->run_index[comp]])) {
         put_bits(pb, 1, 1);
         run -= 1 << ff_log2_run[state->run_index[comp]];
-        if(state->run_index[comp] < 31)
+        if (state->run_index[comp] < 31)
             state->run_index[comp]++;
     }
     /* if hit EOL, encode another full run, else encode aborted run */
-    if(!trail && run) {
+    if (!trail && run) {
         put_bits(pb, 1, 1);
-    }else if(trail){
+    } else if (trail) {
         put_bits(pb, 1, 0);
-        if(ff_log2_run[state->run_index[comp]])
+        if (ff_log2_run[state->run_index[comp]])
             put_bits(pb, ff_log2_run[state->run_index[comp]], run);
     }
 }
@@ -112,12 +119,15 @@ static inline void ls_encode_run(JLSState *state, PutBitContext *pb, int run, in
 /**
  * Encode one line of image
  */
-static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last, void *cur, int last2, int w, int stride, int comp, int bits){
+static inline void ls_encode_line(JLSState *state, PutBitContext *pb,
+                                  void *last, void *cur, int last2, int w,
+                                  int stride, int comp, int bits)
+{
     int x = 0;
     int Ra, Rb, Rc, Rd;
     int D0, D1, D2;
 
-    while(x < w) {
+    while (x < w) {
         int err, pred, sign;
 
         /* compute gradients */
@@ -130,71 +140,76 @@ static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last
         D2 = Rc - Ra;
 
         /* run mode */
-        if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) {
+        if ((FFABS(D0) <= state->near) &&
+            (FFABS(D1) <= state->near) &&
+            (FFABS(D2) <= state->near)) {
             int RUNval, RItype, run;
 
-            run = 0;
+            run    = 0;
             RUNval = Ra;
-            while(x < w && (FFABS(R(cur, x) - RUNval) <= state->near)){
+            while (x < w && (FFABS(R(cur, x) - RUNval) <= state->near)) {
                 run++;
                 W(cur, x, Ra);
                 x += stride;
             }
             ls_encode_run(state, pb, run, comp, x < w);
-            if(x >= w)
+            if (x >= w)
                 return;
-            Rb = R(last, x);
+            Rb     = R(last, x);
             RItype = FFABS(Ra - Rb) <= state->near;
-            pred = RItype ? Ra : Rb;
-            err = R(cur, x) - pred;
+            pred   = RItype ? Ra : Rb;
+            err    = R(cur, x) - pred;
 
-            if(!RItype && Ra > Rb)
+            if (!RItype && Ra > Rb)
                 err = -err;
 
-            if(state->near){
-                if(err > 0)
-                    err = (state->near + err) / state->twonear;
+            if (state->near) {
+                if (err > 0)
+                    err =  (state->near + err) / state->twonear;
                 else
                     err = -(state->near - err) / state->twonear;
 
-                if(RItype || (Rb >= Ra))
+                if (RItype || (Rb >= Ra))
                     Ra = av_clip(pred + err * state->twonear, 0, state->maxval);
                 else
                     Ra = av_clip(pred - err * state->twonear, 0, state->maxval);
                 W(cur, x, Ra);
             }
-            if(err < 0)
+            if (err < 0)
                 err += state->range;
             if (err >= state->range + 1 >> 1)
                 err -= state->range;
 
-            ls_encode_runterm(state, pb, RItype, err, ff_log2_run[state->run_index[comp]]);
+            ls_encode_runterm(state, pb, RItype, err,
+                              ff_log2_run[state->run_index[comp]]);
 
-            if(state->run_index[comp] > 0)
+            if (state->run_index[comp] > 0)
                 state->run_index[comp]--;
         } else { /* regular mode */
             int context;
 
-            context = ff_jpegls_quantize(state, D0) * 81 + ff_jpegls_quantize(state, D1) * 9 + ff_jpegls_quantize(state, D2);
-            pred = mid_pred(Ra, Ra + Rb - Rc, Rb);
+            context = ff_jpegls_quantize(state, D0) * 81 +
+                      ff_jpegls_quantize(state, D1) *  9 +
+                      ff_jpegls_quantize(state, D2);
+            pred    = mid_pred(Ra, Ra + Rb - Rc, Rb);
 
-            if(context < 0){
+            if (context < 0) {
                 context = -context;
-                sign = 1;
-                pred = av_clip(pred - state->C[context], 0, state->maxval);
-                err = pred - R(cur, x);
-            }else{
+                sign    = 1;
+                pred    = av_clip(pred - state->C[context], 0, state->maxval);
+                err     = pred - R(cur, x);
+            } else {
                 sign = 0;
                 pred = av_clip(pred + state->C[context], 0, state->maxval);
-                err = R(cur, x) - pred;
+                err  = R(cur, x) - pred;
             }
 
-            if(state->near){
-                if(err > 0)
-                    err = (state->near + err) / state->twonear;
+            if (state->near) {
+                if (err > 0)
+                    err =  (state->near + err) / state->twonear;
                 else
                     err = -(state->near - err) / state->twonear;
-                if(!sign)
+                if (!sign)
                     Ra = av_clip(pred + err * state->twonear, 0, state->maxval);
                 else
                     Ra = av_clip(pred - err * state->twonear, 0, state->maxval);
@@ -207,18 +222,22 @@ static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last
     }
 }
 
-static void ls_store_lse(JLSState *state, PutBitContext *pb){
+static void ls_store_lse(JLSState *state, PutBitContext *pb)
+{
     /* Test if we have default params and don't need to store LSE */
     JLSState state2 = { 0 };
-    state2.bpp = state->bpp;
+    state2.bpp  = state->bpp;
     state2.near = state->near;
     ff_jpegls_reset_coding_parameters(&state2, 1);
-    if(state->T1 == state2.T1 && state->T2 == state2.T2 && state->T3 == state2.T3 && state->reset == state2.reset)
+    if (state->T1 == state2.T1 &&
+        state->T2 == state2.T2 &&
+        state->T3 == state2.T3 &&
+        state->reset == state2.reset)
         return;
     /* store LSE type 1 */
     put_marker(pb, LSE);
     put_bits(pb, 16, 13);
-    put_bits(pb, 8,   1);
+    put_bits(pb, 8, 1);
     put_bits(pb, 16, state->maxval);
     put_bits(pb, 16, state->T1);
     put_bits(pb, 16, state->T2);
@@ -229,9 +248,9 @@ static void ls_store_lse(JLSState *state, PutBitContext *pb){
 static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
                              const AVFrame *pict, int *got_packet)
 {
-    JpeglsContext * const s = avctx->priv_data;
-    AVFrame * const p = &s->picture;
-    const int near = avctx->prediction_method;
+    JpeglsContext *const s = avctx->priv_data;
+    AVFrame *const p       = &s->picture;
+    const int near         = avctx->prediction_method;
     PutBitContext pb, pb2;
     GetBitContext gb;
     uint8_t *buf2, *zero, *cur, *last;
@@ -239,17 +258,18 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
     int i, size, ret;
     int comps;
 
-    *p = *pict;
-    p->pict_type= AV_PICTURE_TYPE_I;
-    p->key_frame= 1;
+    *p           = *pict;
+    p->pict_type = AV_PICTURE_TYPE_I;
+    p->key_frame = 1;
 
-    if(avctx->pix_fmt == AV_PIX_FMT_GRAY8 || avctx->pix_fmt == AV_PIX_FMT_GRAY16)
+    if (avctx->pix_fmt == AV_PIX_FMT_GRAY8 ||
+        avctx->pix_fmt == AV_PIX_FMT_GRAY16)
         comps = 1;
     else
         comps = 3;
 
-    if ((ret = ff_alloc_packet(pkt, avctx->width*avctx->height*comps*4 +
-                                    FF_MIN_BUFFER_SIZE)) < 0) {
+    if ((ret = ff_alloc_packet(pkt, avctx->width * avctx->height * comps * 4 +
+                               FF_MIN_BUFFER_SIZE)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
         return ret;
     }
@@ -263,31 +283,31 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
     put_marker(&pb, SOI);
     put_marker(&pb, SOF48);
     put_bits(&pb, 16, 8 + comps * 3); // header size depends on components
-    put_bits(&pb,  8, (avctx->pix_fmt == AV_PIX_FMT_GRAY16) ? 16 : 8); // bpp
+    put_bits(&pb, 8, (avctx->pix_fmt == AV_PIX_FMT_GRAY16) ? 16 : 8);  // bpp
     put_bits(&pb, 16, avctx->height);
     put_bits(&pb, 16, avctx->width);
-    put_bits(&pb,  8, comps);         // components
-    for(i = 1; i <= comps; i++) {
-        put_bits(&pb,  8, i);    // component ID
-        put_bits(&pb,  8, 0x11); // subsampling: none
-        put_bits(&pb,  8, 0);    // Tiq, used by JPEG-LS ext
+    put_bits(&pb, 8, comps);          // components
+    for (i = 1; i <= comps; i++) {
+        put_bits(&pb, 8, i);     // component ID
+        put_bits(&pb, 8, 0x11);  // subsampling: none
+        put_bits(&pb, 8, 0);     // Tiq, used by JPEG-LS ext
     }
 
     put_marker(&pb, SOS);
     put_bits(&pb, 16, 6 + comps * 2);
-    put_bits(&pb,  8, comps);
-    for(i = 1; i <= comps; i++) {
-        put_bits(&pb,  8, i);  // component ID
-        put_bits(&pb,  8, 0);  // mapping index: none
+    put_bits(&pb, 8, comps);
+    for (i = 1; i <= comps; i++) {
+        put_bits(&pb, 8, i);   // component ID
+        put_bits(&pb, 8, 0);   // mapping index: none
     }
-    put_bits(&pb,  8, near);
-    put_bits(&pb,  8, (comps > 1) ? 1 : 0); // interleaving: 0 - plane, 1 - line
-    put_bits(&pb,  8, 0); // point transform: none
+    put_bits(&pb, 8, near);
+    put_bits(&pb, 8, (comps > 1) ? 1 : 0);  // interleaving: 0 - plane, 1 - line
+    put_bits(&pb, 8, 0);  // point transform: none
 
     state = av_mallocz(sizeof(JLSState));
     /* initialize JPEG-LS state from JPEG parameters */
     state->near = near;
-    state->bpp = (avctx->pix_fmt == AV_PIX_FMT_GRAY16) ? 16 : 8;
+    state->bpp  = (avctx->pix_fmt == AV_PIX_FMT_GRAY16) ? 16 : 8;
     ff_jpegls_reset_coding_parameters(state, 0);
     ff_jpegls_init_state(state);
 
@@ -295,46 +315,48 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
 
     zero = av_mallocz(p->linesize[0]);
     last = zero;
-    cur = p->data[0];
-    if(avctx->pix_fmt == AV_PIX_FMT_GRAY8){
+    cur  = p->data[0];
+    if (avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
         int t = 0;
 
-        for(i = 0; i < avctx->height; i++) {
-            ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0,  8);
-            t = last[0];
+        for (i = 0; i < avctx->height; i++) {
+            ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 8);
+            t    = last[0];
             last = cur;
             cur += p->linesize[0];
         }
-    }else if(avctx->pix_fmt == AV_PIX_FMT_GRAY16){
+    } else if (avctx->pix_fmt == AV_PIX_FMT_GRAY16) {
         int t = 0;
 
-        for(i = 0; i < avctx->height; i++) {
+        for (i = 0; i < avctx->height; i++) {
             ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 16);
-            t = *((uint16_t*)last);
+            t    = *((uint16_t *)last);
             last = cur;
             cur += p->linesize[0];
         }
-    }else if(avctx->pix_fmt == AV_PIX_FMT_RGB24){
+    } else if (avctx->pix_fmt == AV_PIX_FMT_RGB24) {
         int j, width;
-        int Rc[3] = {0, 0, 0};
+        int Rc[3] = { 0, 0, 0 };
 
         width = avctx->width * 3;
-        for(i = 0; i < avctx->height; i++) {
-            for(j = 0; j < 3; j++) {
-                ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8);
+        for (i = 0; i < avctx->height; i++) {
+            for (j = 0; j < 3; j++) {
+                ls_encode_line(state, &pb2, last + j, cur + j, Rc[j],
+                               width, 3, j, 8);
                 Rc[j] = last[j];
             }
             last = cur;
             cur += s->picture.linesize[0];
         }
-    }else if(avctx->pix_fmt == AV_PIX_FMT_BGR24){
+    } else if (avctx->pix_fmt == AV_PIX_FMT_BGR24) {
         int j, width;
-        int Rc[3] = {0, 0, 0};
+        int Rc[3] = { 0, 0, 0 };
 
         width = avctx->width * 3;
-        for(i = 0; i < avctx->height; i++) {
-            for(j = 2; j >= 0; j--) {
-                ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8);
+        for (i = 0; i < avctx->height; i++) {
+            for (j = 2; j >= 0; j--) {
+                ls_encode_line(state, &pb2, last + j, cur + j, Rc[j],
+                               width, 3, j, 8);
                 Rc[j] = last[j];
             }
             last = cur;
@@ -345,20 +367,20 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
     av_free(zero);
     av_free(state);
 
-    // the specification says that after doing 0xff escaping unused bits in the
-    // last byte must be set to 0, so just append 7 "optional" zero-bits to
-    // avoid special-casing.
+    /* the specification says that after doing 0xff escaping unused bits in
+     * the last byte must be set to 0, so just append 7 "optional" zero-bits
+     * to avoid special-casing. */
     put_bits(&pb2, 7, 0);
     size = put_bits_count(&pb2);
     flush_put_bits(&pb2);
     /* do escape coding */
     init_get_bits(&gb, buf2, size);
     size -= 7;
-    while(get_bits_count(&gb) < size){
+    while (get_bits_count(&gb) < size) {
         int v;
         v = get_bits(&gb, 8);
         put_bits(&pb, 8, v);
-        if(v == 0xFF){
+        if (v == 0xFF) {
             v = get_bits(&gb, 7);
             put_bits(&pb, 8, v);
         }
@@ -378,29 +400,35 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
     return 0;
 }
 
-static av_cold int encode_init_ls(AVCodecContext *ctx) {
-    JpeglsContext *c = (JpeglsContext*)ctx->priv_data;
+static av_cold int encode_init_ls(AVCodecContext *ctx)
+{
+    JpeglsContext *c = (JpeglsContext *)ctx->priv_data;
 
-    c->avctx = ctx;
+    c->avctx         = ctx;
     ctx->coded_frame = &c->picture;
 
-    if(ctx->pix_fmt != AV_PIX_FMT_GRAY8 && ctx->pix_fmt != AV_PIX_FMT_GRAY16 && ctx->pix_fmt != AV_PIX_FMT_RGB24 && ctx->pix_fmt != AV_PIX_FMT_BGR24){
-        av_log(ctx, AV_LOG_ERROR, "Only grayscale and RGB24/BGR24 images are supported\n");
+    if (ctx->pix_fmt != AV_PIX_FMT_GRAY8  &&
+        ctx->pix_fmt != AV_PIX_FMT_GRAY16 &&
+        ctx->pix_fmt != AV_PIX_FMT_RGB24  &&
+        ctx->pix_fmt != AV_PIX_FMT_BGR24) {
+        av_log(ctx, AV_LOG_ERROR,
+               "Only grayscale and RGB24/BGR24 images are supported\n");
         return -1;
     }
     return 0;
 }
 
-AVCodec ff_jpegls_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
+AVCodec ff_jpegls_encoder = {
     .name           = "jpegls",
+    .long_name      = NULL_IF_CONFIG_SMALL("JPEG-LS"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_JPEGLS,
     .priv_data_size = sizeof(JpeglsContext),
     .init           = encode_init_ls,
     .encode2        = encode_picture_ls,
-    .pix_fmts       = (const enum AVPixelFormat[]){
-        AV_PIX_FMT_BGR24, AV_PIX_FMT_RGB24, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
+    .pix_fmts       = (const enum AVPixelFormat[]) {
+        AV_PIX_FMT_BGR24, AV_PIX_FMT_RGB24,
+        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
         AV_PIX_FMT_NONE
     },
-    .long_name      = NULL_IF_CONFIG_SMALL("JPEG-LS"),
 };