cosmetics: pretty-print flacenc.c

Originally committed as revision 24597 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 344 insertions, 325 deletions

diff --git a/libavcodec/flacenc.c b/libavcodec/flacenc.c
index 20e423daa5..9877a838c4 100644
--- a/libavcodec/flacenc.c
+++ b/libavcodec/flacenc.c
@@ -98,8 +98,9 @@ typedef struct FlacEncodeContext {
     struct AVMD5 *md5ctx;
 } FlacEncodeContext;
 
+
 /**
- * Write streaminfo metadata block to byte array
+ * Write streaminfo metadata block to byte array.
  */
 static void write_streaminfo(FlacEncodeContext *s, uint8_t *header)
 {
@@ -123,9 +124,10 @@ static void write_streaminfo(FlacEncodeContext *s, uint8_t *header)
     memcpy(&header[18], s->md5sum, 16);
 }
 
+
 /**
- * Set blocksize based on samplerate
- * Choose the closest predefined blocksize >= BLOCK_TIME_MS milliseconds
+ * Set blocksize based on samplerate.
+ * Choose the closest predefined blocksize >= BLOCK_TIME_MS milliseconds.
  */
 static int select_blocksize(int samplerate, int block_time_ms)
 {
@@ -135,15 +137,17 @@ static int select_blocksize(int samplerate, int block_time_ms)
 
     assert(samplerate > 0);
     blocksize = ff_flac_blocksize_table[1];
-    target = (samplerate * block_time_ms) / 1000;
-    for(i=0; i<16; i++) {
-        if(target >= ff_flac_blocksize_table[i] && ff_flac_blocksize_table[i] > blocksize) {
+    target    = (samplerate * block_time_ms) / 1000;
+    for (i = 0; i < 16; i++) {
+        if (target >= ff_flac_blocksize_table[i] &&
+            ff_flac_blocksize_table[i] > blocksize) {
             blocksize = ff_flac_blocksize_table[i];
         }
     }
     return blocksize;
 }
 
+
 static av_cold int flac_encode_init(AVCodecContext *avctx)
 {
     int freq = avctx->sample_rate;
@@ -156,20 +160,18 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
 
     dsputil_init(&s->dsp, avctx);
 
-    if(avctx->sample_fmt != SAMPLE_FMT_S16) {
+    if (avctx->sample_fmt != SAMPLE_FMT_S16)
         return -1;
-    }
 
-    if(channels < 1 || channels > FLAC_MAX_CHANNELS) {
+    if (channels < 1 || channels > FLAC_MAX_CHANNELS)
         return -1;
-    }
     s->channels = channels;
 
     /* find samplerate in table */
-    if(freq < 1)
+    if (freq < 1)
         return -1;
-    for(i=4; i<12; i++) {
-        if(freq == ff_flac_sample_rate_table[i]) {
+    for (i = 4; i < 12; i++) {
+        if (freq == ff_flac_sample_rate_table[i]) {
             s->samplerate = ff_flac_sample_rate_table[i];
             s->sr_code[0] = i;
             s->sr_code[1] = 0;
@@ -177,14 +179,14 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
         }
     }
     /* if not in table, samplerate is non-standard */
-    if(i == 12) {
-        if(freq % 1000 == 0 && freq < 255000) {
+    if (i == 12) {
+        if (freq % 1000 == 0 && freq < 255000) {
             s->sr_code[0] = 12;
             s->sr_code[1] = freq / 1000;
-        } else if(freq % 10 == 0 && freq < 655350) {
+        } else if (freq % 10 == 0 && freq < 655350) {
             s->sr_code[0] = 14;
             s->sr_code[1] = freq / 10;
-        } else if(freq < 65535) {
+        } else if (freq < 65535) {
             s->sr_code[0] = 13;
             s->sr_code[1] = freq;
         } else {
@@ -194,33 +196,36 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
     }
 
     /* set compression option defaults based on avctx->compression_level */
-    if(avctx->compression_level < 0) {
+    if (avctx->compression_level < 0)
         s->options.compression_level = 5;
-    } else {
+    else
         s->options.compression_level = avctx->compression_level;
-    }
     av_log(avctx, AV_LOG_DEBUG, " compression: %d\n", s->options.compression_level);
 
-    level= s->options.compression_level;
-    if(level > 12) {
+    level = s->options.compression_level;
+    if (level > 12) {
         av_log(avctx, AV_LOG_ERROR, "invalid compression level: %d\n",
                s->options.compression_level);
         return -1;
     }
 
-    s->options.block_time_ms       = ((int[]){ 27, 27, 27,105,105,105,105,105,105,105,105,105,105})[level];
-    s->options.lpc_type            = ((int[]){ AV_LPC_TYPE_FIXED,    AV_LPC_TYPE_FIXED,    AV_LPC_TYPE_FIXED,
-                                               AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON,
-                                               AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON,
-                                               AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON,
-                                               AV_LPC_TYPE_LEVINSON})[level];
-    s->options.min_prediction_order= ((int[]){  2,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1})[level];
-    s->options.max_prediction_order= ((int[]){  3,  4,  4,  6,  8,  8,  8,  8, 12, 12, 12, 32, 32})[level];
+    s->options.block_time_ms = ((int[]){ 27, 27, 27,105,105,105,105,105,105,105,105,105,105})[level];
+
+    s->options.lpc_type      = ((int[]){ AV_LPC_TYPE_FIXED,    AV_LPC_TYPE_FIXED,    AV_LPC_TYPE_FIXED,
+                                         AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON,
+                                         AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON,
+                                         AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON, AV_LPC_TYPE_LEVINSON,
+                                         AV_LPC_TYPE_LEVINSON})[level];
+
+    s->options.min_prediction_order = ((int[]){  2,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1})[level];
+    s->options.max_prediction_order = ((int[]){  3,  4,  4,  6,  8,  8,  8,  8, 12, 12, 12, 32, 32})[level];
+
     s->options.prediction_order_method = ((int[]){ ORDER_METHOD_EST,    ORDER_METHOD_EST,    ORDER_METHOD_EST,
                                                    ORDER_METHOD_EST,    ORDER_METHOD_EST,    ORDER_METHOD_EST,
                                                    ORDER_METHOD_4LEVEL, ORDER_METHOD_LOG,    ORDER_METHOD_4LEVEL,
                                                    ORDER_METHOD_LOG,    ORDER_METHOD_SEARCH, ORDER_METHOD_LOG,
                                                    ORDER_METHOD_SEARCH})[level];
+
     s->options.min_partition_order = ((int[]){  2,  2,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0})[level];
     s->options.max_partition_order = ((int[]){  2,  2,  3,  3,  3,  8,  8,  8,  8,  8,  8,  8,  8})[level];
 
@@ -275,13 +280,13 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
         s->options.min_prediction_order = 0;
     } else if (avctx->min_prediction_order >= 0) {
         if (s->options.lpc_type == AV_LPC_TYPE_FIXED) {
-            if(avctx->min_prediction_order > MAX_FIXED_ORDER) {
+            if (avctx->min_prediction_order > MAX_FIXED_ORDER) {
                 av_log(avctx, AV_LOG_ERROR, "invalid min prediction order: %d\n",
                        avctx->min_prediction_order);
                 return -1;
             }
-        } else if(avctx->min_prediction_order < MIN_LPC_ORDER ||
-                  avctx->min_prediction_order > MAX_LPC_ORDER) {
+        } else if (avctx->min_prediction_order < MIN_LPC_ORDER ||
+                   avctx->min_prediction_order > MAX_LPC_ORDER) {
             av_log(avctx, AV_LOG_ERROR, "invalid min prediction order: %d\n",
                    avctx->min_prediction_order);
             return -1;
@@ -292,7 +297,7 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
         s->options.max_prediction_order = 0;
     } else if (avctx->max_prediction_order >= 0) {
         if (s->options.lpc_type == AV_LPC_TYPE_FIXED) {
-            if(avctx->max_prediction_order > MAX_FIXED_ORDER) {
+            if (avctx->max_prediction_order > MAX_FIXED_ORDER) {
                 av_log(avctx, AV_LOG_ERROR, "invalid max prediction order: %d\n",
                        avctx->max_prediction_order);
                 return -1;
@@ -305,7 +310,7 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
         }
         s->options.max_prediction_order = avctx->max_prediction_order;
     }
-    if(s->options.max_prediction_order < s->options.min_prediction_order) {
+    if (s->options.max_prediction_order < s->options.min_prediction_order) {
         av_log(avctx, AV_LOG_ERROR, "invalid prediction orders: min=%d max=%d\n",
                s->options.min_prediction_order, s->options.max_prediction_order);
         return -1;
@@ -313,15 +318,15 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
     av_log(avctx, AV_LOG_DEBUG, " prediction order: %d, %d\n",
            s->options.min_prediction_order, s->options.max_prediction_order);
 
-    if(avctx->prediction_order_method >= 0) {
-        if(avctx->prediction_order_method > ORDER_METHOD_LOG) {
+    if (avctx->prediction_order_method >= 0) {
+        if (avctx->prediction_order_method > ORDER_METHOD_LOG) {
             av_log(avctx, AV_LOG_ERROR, "invalid prediction order method: %d\n",
                    avctx->prediction_order_method);
             return -1;
         }
         s->options.prediction_order_method = avctx->prediction_order_method;
     }
-    switch(s->options.prediction_order_method) {
+    switch (s->options.prediction_order_method) {
         case ORDER_METHOD_EST:    av_log(avctx, AV_LOG_DEBUG, " order method: %s\n",
                                          "estimate"); break;
         case ORDER_METHOD_2LEVEL: av_log(avctx, AV_LOG_DEBUG, " order method: %s\n",
@@ -336,23 +341,23 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
                                          "log search"); break;
     }
 
-    if(avctx->min_partition_order >= 0) {
-        if(avctx->min_partition_order > MAX_PARTITION_ORDER) {
+    if (avctx->min_partition_order >= 0) {
+        if (avctx->min_partition_order > MAX_PARTITION_ORDER) {
             av_log(avctx, AV_LOG_ERROR, "invalid min partition order: %d\n",
                    avctx->min_partition_order);
             return -1;
         }
         s->options.min_partition_order = avctx->min_partition_order;
     }
-    if(avctx->max_partition_order >= 0) {
-        if(avctx->max_partition_order > MAX_PARTITION_ORDER) {
+    if (avctx->max_partition_order >= 0) {
+        if (avctx->max_partition_order > MAX_PARTITION_ORDER) {
             av_log(avctx, AV_LOG_ERROR, "invalid max partition order: %d\n",
                    avctx->max_partition_order);
             return -1;
         }
         s->options.max_partition_order = avctx->max_partition_order;
     }
-    if(s->options.max_partition_order < s->options.min_partition_order) {
+    if (s->options.max_partition_order < s->options.min_partition_order) {
         av_log(avctx, AV_LOG_ERROR, "invalid partition orders: min=%d max=%d\n",
                s->options.min_partition_order, s->options.max_partition_order);
         return -1;
@@ -360,8 +365,8 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
     av_log(avctx, AV_LOG_DEBUG, " partition order: %d, %d\n",
            s->options.min_partition_order, s->options.max_partition_order);
 
-    if(avctx->frame_size > 0) {
-        if(avctx->frame_size < FLAC_MIN_BLOCKSIZE ||
+    if (avctx->frame_size > 0) {
+        if (avctx->frame_size < FLAC_MIN_BLOCKSIZE ||
                 avctx->frame_size > FLAC_MAX_BLOCKSIZE) {
             av_log(avctx, AV_LOG_ERROR, "invalid block size: %d\n",
                    avctx->frame_size);
@@ -374,8 +379,8 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
     av_log(avctx, AV_LOG_DEBUG, " block size: %d\n", s->avctx->frame_size);
 
     /* set LPC precision */
-    if(avctx->lpc_coeff_precision > 0) {
-        if(avctx->lpc_coeff_precision > MAX_LPC_PRECISION) {
+    if (avctx->lpc_coeff_precision > 0) {
+        if (avctx->lpc_coeff_precision > MAX_LPC_PRECISION) {
             av_log(avctx, AV_LOG_ERROR, "invalid lpc coeff precision: %d\n",
                    avctx->lpc_coeff_precision);
             return -1;
@@ -394,7 +399,7 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
 
     /* initialize MD5 context */
     s->md5ctx = av_malloc(av_md5_size);
-    if(!s->md5ctx)
+    if (!s->md5ctx)
         return AVERROR(ENOMEM);
     av_md5_init(s->md5ctx);
 
@@ -403,7 +408,7 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
     avctx->extradata = streaminfo;
     avctx->extradata_size = FLAC_STREAMINFO_SIZE;
 
-    s->frame_count = 0;
+    s->frame_count   = 0;
     s->min_framesize = s->max_framesize;
 
     avctx->coded_frame = avcodec_alloc_frame();
@@ -412,6 +417,7 @@ static av_cold int flac_encode_init(AVCodecContext *avctx)
     return 0;
 }
 
+
 static void init_frame(FlacEncodeContext *s)
 {
     int i, ch;
@@ -419,17 +425,17 @@ static void init_frame(FlacEncodeContext *s)
 
     frame = &s->frame;
 
-    for(i=0; i<16; i++) {
-        if(s->avctx->frame_size == ff_flac_blocksize_table[i]) {
-            frame->blocksize = ff_flac_blocksize_table[i];
+    for (i = 0; i < 16; i++) {
+        if (s->avctx->frame_size == ff_flac_blocksize_table[i]) {
+            frame->blocksize  = ff_flac_blocksize_table[i];
             frame->bs_code[0] = i;
             frame->bs_code[1] = 0;
             break;
         }
     }
-    if(i == 16) {
+    if (i == 16) {
         frame->blocksize = s->avctx->frame_size;
-        if(frame->blocksize <= 256) {
+        if (frame->blocksize <= 256) {
             frame->bs_code[0] = 6;
             frame->bs_code[1] = frame->blocksize-1;
         } else {
@@ -438,13 +444,13 @@ static void init_frame(FlacEncodeContext *s)
         }
     }
 
-    for(ch=0; ch<s->channels; ch++) {
+    for (ch = 0; ch < s->channels; ch++)
         frame->subframes[ch].obits = 16;
-    }
 }
 
+
 /**
- * Copy channel-interleaved input samples into separate subframes
+ * Copy channel-interleaved input samples into separate subframes.
  */
 static void copy_samples(FlacEncodeContext *s, const int16_t *samples)
 {
@@ -452,31 +458,30 @@ static void copy_samples(FlacEncodeContext *s, const int16_t *samples)
     FlacFrame *frame;
 
     frame = &s->frame;
-    for(i=0,j=0; i<frame->blocksize; i++) {
-        for(ch=0; ch<s->channels; ch++,j++) {
+    for (i = 0, j = 0; i < frame->blocksize; i++)
+        for (ch = 0; ch < s->channels; ch++, j++)
             frame->subframes[ch].samples[i] = samples[j];
-        }
-    }
 }
 
 
 #define rice_encode_count(sum, n, k) (((n)*((k)+1))+((sum-(n>>1))>>(k)))
 
 /**
- * Solve for d/dk(rice_encode_count) = n-((sum-(n>>1))>>(k+1)) = 0
+ * Solve for d/dk(rice_encode_count) = n-((sum-(n>>1))>>(k+1)) = 0.
  */
 static int find_optimal_param(uint32_t sum, int n)
 {
     int k;
     uint32_t sum2;
 
-    if(sum <= n>>1)
+    if (sum <= n >> 1)
         return 0;
-    sum2 = sum-(n>>1);
-    k = av_log2(n<256 ? FASTDIV(sum2,n) : sum2/n);
+    sum2 = sum - (n >> 1);
+    k    = av_log2(n < 256 ? FASTDIV(sum2, n) : sum2 / n);
     return FFMIN(k, MAX_RICE_PARAM);
 }
 
+
 static uint32_t calc_optimal_rice_params(RiceContext *rc, int porder,
                                          uint32_t *sums, int n, int pred_order)
 {
@@ -484,11 +489,11 @@ static uint32_t calc_optimal_rice_params(RiceContext *rc, int porder,
     int k, cnt, part;
     uint32_t all_bits;
 
-    part = (1 << porder);
+    part     = (1 << porder);
     all_bits = 4 * part;
 
     cnt = (n >> porder) - pred_order;
-    for(i=0; i<part; i++) {
+    for (i = 0; i < part; i++) {
         k = find_optimal_param(sums[i], cnt);
         rc->params[i] = k;
         all_bits += rice_encode_count(sums[i], cnt, k);
@@ -500,6 +505,7 @@ static uint32_t calc_optimal_rice_params(RiceContext *rc, int porder,
     return all_bits;
 }
 
+
 static void calc_sums(int pmin, int pmax, uint32_t *data, int n, int pred_order,
                       uint32_t sums[][MAX_PARTITIONS])
 {
@@ -508,26 +514,25 @@ static void calc_sums(int pmin, int pmax, uint32_t *data, int n, int pred_order,
     uint32_t *res, *res_end;
 
     /* sums for highest level */
-    parts = (1 << pmax);
-    res = &data[pred_order];
+    parts   = (1 << pmax);
+    res     = &data[pred_order];
     res_end = &data[n >> pmax];
-    for(i=0; i<parts; i++) {
+    for (i = 0; i < parts; i++) {
         uint32_t sum = 0;
-        while(res < res_end){
+        while (res < res_end)
             sum += *(res++);
-        }
         sums[pmax][i] = sum;
-        res_end+= n >> pmax;
+        res_end += n >> pmax;
     }
     /* sums for lower levels */
-    for(i=pmax-1; i>=pmin; i--) {
+    for (i = pmax - 1; i >= pmin; i--) {
         parts = (1 << i);
-        for(j=0; j<parts; j++) {
+        for (j = 0; j < parts; j++)
             sums[i][j] = sums[i+1][2*j] + sums[i+1][2*j+1];
-        }
     }
 }
 
+
 static uint32_t calc_rice_params(RiceContext *rc, int pmin, int pmax,
                                  int32_t *data, int n, int pred_order)
 {
@@ -543,19 +548,18 @@ static uint32_t calc_rice_params(RiceContext *rc, int pmin, int pmax,
     assert(pmin <= pmax);
 
     udata = av_malloc(n * sizeof(uint32_t));
-    for(i=0; i<n; i++) {
+    for (i = 0; i < n; i++)
         udata[i] = (2*data[i]) ^ (data[i]>>31);
-    }
 
     calc_sums(pmin, pmax, udata, n, pred_order, sums);
 
     opt_porder = pmin;
     bits[pmin] = UINT32_MAX;
-    for(i=pmin; i<=pmax; i++) {
+    for (i = pmin; i <= pmax; i++) {
         bits[i] = calc_optimal_rice_params(&tmp_rc, i, sums[i], n, pred_order);
-        if(bits[i] <= bits[opt_porder]) {
+        if (bits[i] <= bits[opt_porder]) {
             opt_porder = i;
-            *rc= tmp_rc;
+            *rc = tmp_rc;
         }
     }
 
@@ -563,155 +567,160 @@ static uint32_t calc_rice_params(RiceContext *rc, int pmin, int pmax,
     return bits[opt_porder];
 }
 
+
 static int get_max_p_order(int max_porder, int n, int order)
 {
     int porder = FFMIN(max_porder, av_log2(n^(n-1)));
-    if(order > 0)
+    if (order > 0)
         porder = FFMIN(porder, av_log2(n/order));
     return porder;
 }
 
+
 static uint32_t calc_rice_params_fixed(RiceContext *rc, int pmin, int pmax,
                                        int32_t *data, int n, int pred_order,
                                        int bps)
 {
     uint32_t bits;
-    pmin = get_max_p_order(pmin, n, pred_order);
-    pmax = get_max_p_order(pmax, n, pred_order);
-    bits = pred_order*bps + 6;
+    pmin  = get_max_p_order(pmin, n, pred_order);
+    pmax  = get_max_p_order(pmax, n, pred_order);
+    bits  = pred_order * bps + 6;
     bits += calc_rice_params(rc, pmin, pmax, data, n, pred_order);
     return bits;
 }
 
+
 static uint32_t calc_rice_params_lpc(RiceContext *rc, int pmin, int pmax,
                                      int32_t *data, int n, int pred_order,
                                      int bps, int precision)
 {
     uint32_t bits;
-    pmin = get_max_p_order(pmin, n, pred_order);
-    pmax = get_max_p_order(pmax, n, pred_order);
-    bits = pred_order*bps + 4 + 5 + pred_order*precision + 6;
+    pmin  = get_max_p_order(pmin, n, pred_order);
+    pmax  = get_max_p_order(pmax, n, pred_order);
+    bits  = pred_order*bps + 4 + 5 + pred_order*precision + 6;
     bits += calc_rice_params(rc, pmin, pmax, data, n, pred_order);
     return bits;
 }
 
+
 static void encode_residual_verbatim(int32_t *res, int32_t *smp, int n)
 {
     assert(n > 0);
     memcpy(res, smp, n * sizeof(int32_t));
 }
 
+
 static void encode_residual_fixed(int32_t *res, const int32_t *smp, int n,
                                   int order)
 {
     int i;
 
-    for(i=0; i<order; i++) {
+    for (i = 0; i < order; i++)
         res[i] = smp[i];
-    }
 
-    if(order==0){
-        for(i=order; i<n; i++)
-            res[i]= smp[i];
-    }else if(order==1){
-        for(i=order; i<n; i++)
-            res[i]= smp[i] - smp[i-1];
-    }else if(order==2){
+    if (order == 0) {
+        for (i = order; i < n; i++)
+            res[i] = smp[i];
+    } else if (order == 1) {
+        for (i = order; i < n; i++)
+            res[i] = smp[i] - smp[i-1];
+    } else if (order == 2) {
         int a = smp[order-1] - smp[order-2];
-        for(i=order; i<n; i+=2) {
-            int b = smp[i] - smp[i-1];
-            res[i]= b - a;
-            a = smp[i+1] - smp[i];
-            res[i+1]= a - b;
+        for (i = order; i < n; i += 2) {
+            int b    = smp[i  ] - smp[i-1];
+            res[i]   = b - a;
+            a        = smp[i+1] - smp[i  ];
+            res[i+1] = a - b;
         }
-    }else if(order==3){
-        int a = smp[order-1] - smp[order-2];
+    } else if (order == 3) {
+        int a = smp[order-1] -   smp[order-2];
         int c = smp[order-1] - 2*smp[order-2] + smp[order-3];
-        for(i=order; i<n; i+=2) {
-            int b = smp[i] - smp[i-1];
-            int d = b - a;
-            res[i]= d - c;
-            a = smp[i+1] - smp[i];
-            c = a - b;
-            res[i+1]= c - d;
+        for (i = order; i < n; i += 2) {
+            int b    = smp[i  ] - smp[i-1];
+            int d    = b - a;
+            res[i]   = d - c;
+            a        = smp[i+1] - smp[i  ];
+            c        = a - b;
+            res[i+1] = c - d;
         }
-    }else{
-        int a = smp[order-1] - smp[order-2];
-        int c = smp[order-1] - 2*smp[order-2] + smp[order-3];
+    } else {
+        int a = smp[order-1] -   smp[order-2];
+        int c = smp[order-1] - 2*smp[order-2] +   smp[order-3];
         int e = smp[order-1] - 3*smp[order-2] + 3*smp[order-3] - smp[order-4];
-        for(i=order; i<n; i+=2) {
-            int b = smp[i] - smp[i-1];
-            int d = b - a;
-            int f = d - c;
-            res[i]= f - e;
-            a = smp[i+1] - smp[i];
-            c = a - b;
-            e = c - d;
-            res[i+1]= e - f;
+        for (i = order; i < n; i += 2) {
+            int b    = smp[i  ] - smp[i-1];
+            int d    = b - a;
+            int f    = d - c;
+            res[i  ] = f - e;
+            a        = smp[i+1] - smp[i  ];
+            c        = a - b;
+            e        = c - d;
+            res[i+1] = e - f;
         }
     }
 }
 
+
 #define LPC1(x) {\
     int c = coefs[(x)-1];\
-    p0 += c*s;\
-    s = smp[i-(x)+1];\
-    p1 += c*s;\
+    p0   += c * s;\
+    s     = smp[i-(x)+1];\
+    p1   += c * s;\
 }
 
-static av_always_inline void encode_residual_lpc_unrolled(
-    int32_t *res, const int32_t *smp, int n,
-    int order, const int32_t *coefs, int shift, int big)
+static av_always_inline void encode_residual_lpc_unrolled(int32_t *res,
+                                    const int32_t *smp, int n, int order,
+                                    const int32_t *coefs, int shift, int big)
 {
     int i;
-    for(i=order; i<n; i+=2) {
-        int s = smp[i-order];
+    for (i = order; i < n; i += 2) {
+        int s  = smp[i-order];
         int p0 = 0, p1 = 0;
-        if(big) {
-            switch(order) {
-                case 32: LPC1(32)
-                case 31: LPC1(31)
-                case 30: LPC1(30)
-                case 29: LPC1(29)
-                case 28: LPC1(28)
-                case 27: LPC1(27)
-                case 26: LPC1(26)
-                case 25: LPC1(25)
-                case 24: LPC1(24)
-                case 23: LPC1(23)
-                case 22: LPC1(22)
-                case 21: LPC1(21)
-                case 20: LPC1(20)
-                case 19: LPC1(19)
-                case 18: LPC1(18)
-                case 17: LPC1(17)
-                case 16: LPC1(16)
-                case 15: LPC1(15)
-                case 14: LPC1(14)
-                case 13: LPC1(13)
-                case 12: LPC1(12)
-                case 11: LPC1(11)
-                case 10: LPC1(10)
-                case  9: LPC1( 9)
-                         LPC1( 8)
-                         LPC1( 7)
-                         LPC1( 6)
-                         LPC1( 5)
-                         LPC1( 4)
-                         LPC1( 3)
-                         LPC1( 2)
-                         LPC1( 1)
+        if (big) {
+            switch (order) {
+            case 32: LPC1(32)
+            case 31: LPC1(31)
+            case 30: LPC1(30)
+            case 29: LPC1(29)
+            case 28: LPC1(28)
+            case 27: LPC1(27)
+            case 26: LPC1(26)
+            case 25: LPC1(25)
+            case 24: LPC1(24)
+            case 23: LPC1(23)
+            case 22: LPC1(22)
+            case 21: LPC1(21)
+            case 20: LPC1(20)
+            case 19: LPC1(19)
+            case 18: LPC1(18)
+            case 17: LPC1(17)
+            case 16: LPC1(16)
+            case 15: LPC1(15)
+            case 14: LPC1(14)
+            case 13: LPC1(13)
+            case 12: LPC1(12)
+            case 11: LPC1(11)
+            case 10: LPC1(10)
+            case  9: LPC1( 9)
+                     LPC1( 8)
+                     LPC1( 7)
+                     LPC1( 6)
+                     LPC1( 5)
+                     LPC1( 4)
+                     LPC1( 3)
+                     LPC1( 2)
+                     LPC1( 1)
             }
         } else {
-            switch(order) {
-                case  8: LPC1( 8)
-                case  7: LPC1( 7)
-                case  6: LPC1( 6)
-                case  5: LPC1( 5)
-                case  4: LPC1( 4)
-                case  3: LPC1( 3)
-                case  2: LPC1( 2)
-                case  1: LPC1( 1)
+            switch (order) {
+            case  8: LPC1( 8)
+            case  7: LPC1( 7)
+            case  6: LPC1( 6)
+            case  5: LPC1( 5)
+            case  4: LPC1( 4)
+            case  3: LPC1( 3)
+            case  2: LPC1( 2)
+            case  1: LPC1( 1)
             }
         }
         res[i  ] = smp[i  ] - (p0 >> shift);
@@ -719,42 +728,43 @@ static av_always_inline void encode_residual_lpc_unrolled(
     }
 }
 
+
 static void encode_residual_lpc(int32_t *res, const int32_t *smp, int n,
                                 int order, const int32_t *coefs, int shift)
 {
     int i;
-    for(i=0; i<order; i++) {
+    for (i = 0; i < order; i++)
         res[i] = smp[i];
-    }
 #if CONFIG_SMALL
-    for(i=order; i<n; i+=2) {
+    for (i = order; i < n; i += 2) {
         int j;
-        int s = smp[i];
+        int s  = smp[i];
         int p0 = 0, p1 = 0;
-        for(j=0; j<order; j++) {
+        for (j = 0; j < order; j++) {
             int c = coefs[j];
-            p1 += c*s;
-            s = smp[i-j-1];
-            p0 += c*s;
+            p1   += c * s;
+            s     = smp[i-j-1];
+            p0   += c * s;
         }
         res[i  ] = smp[i  ] - (p0 >> shift);
         res[i+1] = smp[i+1] - (p1 >> shift);
     }
 #else
-    switch(order) {
-        case  1: encode_residual_lpc_unrolled(res, smp, n, 1, coefs, shift, 0); break;
-        case  2: encode_residual_lpc_unrolled(res, smp, n, 2, coefs, shift, 0); break;
-        case  3: encode_residual_lpc_unrolled(res, smp, n, 3, coefs, shift, 0); break;
-        case  4: encode_residual_lpc_unrolled(res, smp, n, 4, coefs, shift, 0); break;
-        case  5: encode_residual_lpc_unrolled(res, smp, n, 5, coefs, shift, 0); break;
-        case  6: encode_residual_lpc_unrolled(res, smp, n, 6, coefs, shift, 0); break;
-        case  7: encode_residual_lpc_unrolled(res, smp, n, 7, coefs, shift, 0); break;
-        case  8: encode_residual_lpc_unrolled(res, smp, n, 8, coefs, shift, 0); break;
-        default: encode_residual_lpc_unrolled(res, smp, n, order, coefs, shift, 1); break;
+    switch (order) {
+    case  1: encode_residual_lpc_unrolled(res, smp, n, 1, coefs, shift, 0); break;
+    case  2: encode_residual_lpc_unrolled(res, smp, n, 2, coefs, shift, 0); break;
+    case  3: encode_residual_lpc_unrolled(res, smp, n, 3, coefs, shift, 0); break;
+    case  4: encode_residual_lpc_unrolled(res, smp, n, 4, coefs, shift, 0); break;
+    case  5: encode_residual_lpc_unrolled(res, smp, n, 5, coefs, shift, 0); break;
+    case  6: encode_residual_lpc_unrolled(res, smp, n, 6, coefs, shift, 0); break;
+    case  7: encode_residual_lpc_unrolled(res, smp, n, 7, coefs, shift, 0); break;
+    case  8: encode_residual_lpc_unrolled(res, smp, n, 8, coefs, shift, 0); break;
+    default: encode_residual_lpc_unrolled(res, smp, n, order, coefs, shift, 1); break;
     }
 #endif
 }
 
+
 static int encode_residual(FlacEncodeContext *ctx, int ch)
 {
     int i, n;
@@ -767,54 +777,54 @@ static int encode_residual(FlacEncodeContext *ctx, int ch)
     int32_t *res, *smp;
 
     frame = &ctx->frame;
-    sub = &frame->subframes[ch];
-    res = sub->residual;
-    smp = sub->samples;
-    n = frame->blocksize;
+    sub   = &frame->subframes[ch];
+    res   = sub->residual;
+    smp   = sub->samples;
+    n     = frame->blocksize;
 
     /* CONSTANT */
-    for(i=1; i<n; i++) {
-        if(smp[i] != smp[0]) break;
-    }
-    if(i == n) {
+    for (i = 1; i < n; i++)
+        if(smp[i] != smp[0])
+            break;
+    if (i == n) {
         sub->type = sub->type_code = FLAC_SUBFRAME_CONSTANT;
         res[0] = smp[0];
         return sub->obits;
     }
 
     /* VERBATIM */
-    if(n < 5) {
+    if (n < 5) {
         sub->type = sub->type_code = FLAC_SUBFRAME_VERBATIM;
         encode_residual_verbatim(res, smp, n);
         return sub->obits * n;
     }
 
-    min_order = ctx->options.min_prediction_order;
-    max_order = ctx->options.max_prediction_order;
+    min_order  = ctx->options.min_prediction_order;
+    max_order  = ctx->options.max_prediction_order;
     min_porder = ctx->options.min_partition_order;
     max_porder = ctx->options.max_partition_order;
-    precision = ctx->options.lpc_coeff_precision;
-    omethod = ctx->options.prediction_order_method;
+    precision  = ctx->options.lpc_coeff_precision;
+    omethod    = ctx->options.prediction_order_method;
 
     /* FIXED */
     if (ctx->options.lpc_type == AV_LPC_TYPE_NONE  ||
         ctx->options.lpc_type == AV_LPC_TYPE_FIXED || n <= max_order) {
         uint32_t bits[MAX_FIXED_ORDER+1];
-        if(max_order > MAX_FIXED_ORDER) max_order = MAX_FIXED_ORDER;
+        if (max_order > MAX_FIXED_ORDER)
+            max_order = MAX_FIXED_ORDER;
         opt_order = 0;
-        bits[0] = UINT32_MAX;
-        for(i=min_order; i<=max_order; i++) {
+        bits[0]   = UINT32_MAX;
+        for (i = min_order; i <= max_order; i++) {
             encode_residual_fixed(res, smp, n, i);
             bits[i] = calc_rice_params_fixed(&sub->rc, min_porder, max_porder, res,
                                              n, i, sub->obits);
-            if(bits[i] < bits[opt_order]) {
+            if (bits[i] < bits[opt_order])
                 opt_order = i;
-            }
         }
-        sub->order = opt_order;
-        sub->type = FLAC_SUBFRAME_FIXED;
+        sub->order     = opt_order;
+        sub->type      = FLAC_SUBFRAME_FIXED;
         sub->type_code = sub->type | sub->order;
-        if(sub->order != max_order) {
+        if (sub->order != max_order) {
             encode_residual_fixed(res, smp, n, sub->order);
             return calc_rice_params_fixed(&sub->rc, min_porder, max_porder, res, n,
                                           sub->order, sub->obits);
@@ -828,75 +838,78 @@ static int encode_residual(FlacEncodeContext *ctx, int ch)
                                   ctx->options.lpc_passes, omethod,
                                   MAX_LPC_SHIFT, 0);
 
-    if(omethod == ORDER_METHOD_2LEVEL ||
-       omethod == ORDER_METHOD_4LEVEL ||
-       omethod == ORDER_METHOD_8LEVEL) {
+    if (omethod == ORDER_METHOD_2LEVEL ||
+        omethod == ORDER_METHOD_4LEVEL ||
+        omethod == ORDER_METHOD_8LEVEL) {
         int levels = 1 << omethod;
         uint32_t bits[1 << ORDER_METHOD_8LEVEL];
         int order;
-        int opt_index = levels-1;
-        opt_order = max_order-1;
+        int opt_index   = levels-1;
+        opt_order       = max_order-1;
         bits[opt_index] = UINT32_MAX;
-        for(i=levels-1; i>=0; i--) {
+        for (i = levels-1; i >= 0; i--) {
             order = min_order + (((max_order-min_order+1) * (i+1)) / levels)-1;
-            if(order < 0) order = 0;
+            if (order < 0)
+                order = 0;
             encode_residual_lpc(res, smp, n, order+1, coefs[order], shift[order]);
             bits[i] = calc_rice_params_lpc(&sub->rc, min_porder, max_porder,
                                            res, n, order+1, sub->obits, precision);
-            if(bits[i] < bits[opt_index]) {
+            if (bits[i] < bits[opt_index]) {
                 opt_index = i;
                 opt_order = order;
             }
         }
         opt_order++;
-    } else if(omethod == ORDER_METHOD_SEARCH) {
+    } else if (omethod == ORDER_METHOD_SEARCH) {
         // brute-force optimal order search
         uint32_t bits[MAX_LPC_ORDER];
         opt_order = 0;
-        bits[0] = UINT32_MAX;
-        for(i=min_order-1; i<max_order; i++) {
+        bits[0]   = UINT32_MAX;
+        for (i = min_order-1; i < max_order; i++) {
             encode_residual_lpc(res, smp, n, i+1, coefs[i], shift[i]);
             bits[i] = calc_rice_params_lpc(&sub->rc, min_porder, max_porder,
                                            res, n, i+1, sub->obits, precision);
-            if(bits[i] < bits[opt_order]) {
+            if (bits[i] < bits[opt_order])
                 opt_order = i;
-            }
         }
         opt_order++;
-    } else if(omethod == ORDER_METHOD_LOG) {
+    } else if (omethod == ORDER_METHOD_LOG) {
         uint32_t bits[MAX_LPC_ORDER];
         int step;
 
-        opt_order= min_order - 1 + (max_order-min_order)/3;
+        opt_order = min_order - 1 + (max_order-min_order)/3;
         memset(bits, -1, sizeof(bits));
 
-        for(step=16 ;step; step>>=1){
-            int last= opt_order;
-            for(i=last-step; i<=last+step; i+= step){
-                if(i<min_order-1 || i>=max_order || bits[i] < UINT32_MAX)
+        for (step = 16; step; step >>= 1) {
+            int last = opt_order;
+            for (i = last-step; i <= last+step; i += step) {
+                if (i < min_order-1 || i >= max_order || bits[i] < UINT32_MAX)
                     continue;
                 encode_residual_lpc(res, smp, n, i+1, coefs[i], shift[i]);
                 bits[i] = calc_rice_params_lpc(&sub->rc, min_porder, max_porder,
-                                            res, n, i+1, sub->obits, precision);
-                if(bits[i] < bits[opt_order])
-                    opt_order= i;
+                                               res, n, i+1, sub->obits,
+                                               precision);
+                if (bits[i] < bits[opt_order])
+                    opt_order = i;
             }
         }
         opt_order++;
     }
 
-    sub->order = opt_order;
-    sub->type = FLAC_SUBFRAME_LPC;
+    sub->order     = opt_order;
+    sub->type      = FLAC_SUBFRAME_LPC;
     sub->type_code = sub->type | (sub->order-1);
-    sub->shift = shift[sub->order-1];
-    for(i=0; i<sub->order; i++) {
+    sub->shift     = shift[sub->order-1];
+    for (i = 0; i < sub->order; i++)
         sub->coefs[i] = coefs[sub->order-1][i];
-    }
+
     encode_residual_lpc(res, smp, n, sub->order, sub->coefs, sub->shift);
-    return calc_rice_params_lpc(&sub->rc, min_porder, max_porder, res, n, sub->order,
-                                sub->obits, precision);
+
+    return calc_rice_params_lpc(&sub->rc, min_porder, max_porder, res, n,
+                                sub->order, sub->obits, precision);
 }
 
+
 static int encode_residual_v(FlacEncodeContext *ctx, int ch)
 {
     int i, n;
@@ -905,18 +918,18 @@ static int encode_residual_v(FlacEncodeContext *ctx, int ch)
     int32_t *res, *smp;
 
     frame = &ctx->frame;
-    sub = &frame->subframes[ch];
-    res = sub->residual;
-    smp = sub->samples;
-    n = frame->blocksize;
+    sub   = &frame->subframes[ch];
+    res   = sub->residual;
+    smp   = sub->samples;
+    n     = frame->blocksize;
 
     /* CONSTANT */
-    for(i=1; i<n; i++) {
-        if(smp[i] != smp[0]) break;
-    }
-    if(i == n) {
+    for (i = 1; i < n; i++)
+        if (smp[i] != smp[0])
+            break;
+    if (i == n) {
         sub->type = sub->type_code = FLAC_SUBFRAME_CONSTANT;
-        res[0] = smp[0];
+        res[0]    = smp[0];
         return sub->obits;
     }
 
@@ -926,6 +939,7 @@ static int encode_residual_v(FlacEncodeContext *ctx, int ch)
     return sub->obits * n;
 }
 
+
 static int estimate_stereo_mode(int32_t *left_ch, int32_t *right_ch, int n)
 {
     int i, best;
@@ -936,8 +950,8 @@ static int estimate_stereo_mode(int32_t *left_ch, int32_t *right_ch, int n)
 
     /* calculate sum of 2nd order residual for each channel */
     sum[0] = sum[1] = sum[2] = sum[3] = 0;
-    for(i=2; i<n; i++) {
-        lt = left_ch[i] - 2*left_ch[i-1] + left_ch[i-2];
+    for (i = 2; i < n; i++) {
+        lt = left_ch[i]  - 2*left_ch[i-1]  + left_ch[i-2];
         rt = right_ch[i] - 2*right_ch[i-1] + right_ch[i-2];
         sum[2] += FFABS((lt + rt) >> 1);
         sum[3] += FFABS(lt - rt);
@@ -945,9 +959,9 @@ static int estimate_stereo_mode(int32_t *left_ch, int32_t *right_ch, int n)
         sum[1] += FFABS(rt);
     }
     /* estimate bit counts */
-    for(i=0; i<4; i++) {
-        k = find_optimal_param(2*sum[i], n);
-        sum[i] = rice_encode_count(2*sum[i], n, k);
+    for (i = 0; i < 4; i++) {
+        k      = find_optimal_param(2 * sum[i], n);
+        sum[i] = rice_encode_count( 2 * sum[i], n, k);
     }
 
     /* calculate score for each mode */
@@ -958,24 +972,23 @@ static int estimate_stereo_mode(int32_t *left_ch, int32_t *right_ch, int n)
 
     /* return mode with lowest score */
     best = 0;
-    for(i=1; i<4; i++) {
-        if(score[i] < score[best]) {
+    for (i = 1; i < 4; i++)
+        if (score[i] < score[best])
             best = i;
-        }
-    }
-    if(best == 0) {
+    if (best == 0) {
         return FLAC_CHMODE_INDEPENDENT;
-    } else if(best == 1) {
+    } else if (best == 1) {
         return FLAC_CHMODE_LEFT_SIDE;
-    } else if(best == 2) {
+    } else if (best == 2) {
         return FLAC_CHMODE_RIGHT_SIDE;
     } else {
         return FLAC_CHMODE_MID_SIDE;
     }
 }
 
+
 /**
- * Perform stereo channel decorrelation
+ * Perform stereo channel decorrelation.
  */
 static void channel_decorrelation(FlacEncodeContext *ctx)
 {
@@ -984,11 +997,11 @@ static void channel_decorrelation(FlacEncodeContext *ctx)
     int i, n;
 
     frame = &ctx->frame;
-    n = frame->blocksize;
+    n     = frame->blocksize;
     left  = frame->subframes[0].samples;
     right = frame->subframes[1].samples;
 
-    if(ctx->channels != 2) {
+    if (ctx->channels != 2) {
         frame->ch_mode = FLAC_CHMODE_INDEPENDENT;
         return;
     }
@@ -996,36 +1009,35 @@ static void channel_decorrelation(FlacEncodeContext *ctx)
     frame->ch_mode = estimate_stereo_mode(left, right, n);
 
     /* perform decorrelation and adjust bits-per-sample */
-    if(frame->ch_mode == FLAC_CHMODE_INDEPENDENT) {
+    if (frame->ch_mode == FLAC_CHMODE_INDEPENDENT)
         return;
-    }
-    if(frame->ch_mode == FLAC_CHMODE_MID_SIDE) {
+    if (frame->ch_mode == FLAC_CHMODE_MID_SIDE) {
         int32_t tmp;
-        for(i=0; i<n; i++) {
-            tmp = left[i];
-            left[i] = (tmp + right[i]) >> 1;
-            right[i] = tmp - right[i];
+        for (i = 0; i < n; i++) {
+            tmp      = left[i];
+            left[i]  = (tmp + right[i]) >> 1;
+            right[i] =  tmp - right[i];
         }
         frame->subframes[1].obits++;
-    } else if(frame->ch_mode == FLAC_CHMODE_LEFT_SIDE) {
-        for(i=0; i<n; i++) {
+    } else if (frame->ch_mode == FLAC_CHMODE_LEFT_SIDE) {
+        for (i = 0; i < n; i++)
             right[i] = left[i] - right[i];
-        }
         frame->subframes[1].obits++;
     } else {
-        for(i=0; i<n; i++) {
+        for (i = 0; i < n; i++)
             left[i] -= right[i];
-        }
         frame->subframes[0].obits++;
     }
 }
 
+
 static void write_utf8(PutBitContext *pb, uint32_t val)
 {
     uint8_t tmp;
     PUT_UTF8(val, tmp, put_bits(pb, 8, tmp);)
 }
 
+
 static void output_frame_header(FlacEncodeContext *s)
 {
     FlacFrame *frame;
@@ -1036,30 +1048,33 @@ static void output_frame_header(FlacEncodeContext *s)
     put_bits(&s->pb, 16, 0xFFF8);
     put_bits(&s->pb, 4, frame->bs_code[0]);
     put_bits(&s->pb, 4, s->sr_code[0]);
-    if(frame->ch_mode == FLAC_CHMODE_INDEPENDENT) {
+
+    if (frame->ch_mode == FLAC_CHMODE_INDEPENDENT)
         put_bits(&s->pb, 4, s->channels-1);
-    } else {
+    else
         put_bits(&s->pb, 4, frame->ch_mode);
-    }
+
     put_bits(&s->pb, 3, 4); /* bits-per-sample code */
     put_bits(&s->pb, 1, 0);
     write_utf8(&s->pb, s->frame_count);
-    if(frame->bs_code[0] == 6) {
+
+    if (frame->bs_code[0] == 6)
         put_bits(&s->pb, 8, frame->bs_code[1]);
-    } else if(frame->bs_code[0] == 7) {
+    else if (frame->bs_code[0] == 7)
         put_bits(&s->pb, 16, frame->bs_code[1]);
-    }
-    if(s->sr_code[0] == 12) {
+
+    if (s->sr_code[0] == 12)
         put_bits(&s->pb, 8, s->sr_code[1]);
-    } else if(s->sr_code[0] > 12) {
+    else if (s->sr_code[0] > 12)
         put_bits(&s->pb, 16, s->sr_code[1]);
-    }
+
     flush_put_bits(&s->pb);
-    crc = av_crc(av_crc_get_table(AV_CRC_8_ATM), 0,
-                 s->pb.buf, put_bits_count(&s->pb)>>3);
+    crc = av_crc(av_crc_get_table(AV_CRC_8_ATM), 0, s->pb.buf,
+                 put_bits_count(&s->pb) >> 3);
     put_bits(&s->pb, 8, crc);
 }
 
+
 static void output_subframe_constant(FlacEncodeContext *s, int ch)
 {
     FlacSubframe *sub;
@@ -1070,6 +1085,7 @@ static void output_subframe_constant(FlacEncodeContext *s, int ch)
     put_sbits(&s->pb, sub->obits, res);
 }
 
+
 static void output_subframe_verbatim(FlacEncodeContext *s, int ch)
 {
     int i;
@@ -1078,14 +1094,15 @@ static void output_subframe_verbatim(FlacEncodeContext *s, int ch)
     int32_t res;
 
     frame = &s->frame;
-    sub = &frame->subframes[ch];
+    sub   = &frame->subframes[ch];
 
-    for(i=0; i<frame->blocksize; i++) {
+    for (i = 0; i < frame->blocksize; i++) {
         res = sub->residual[i];
         put_sbits(&s->pb, sub->obits, res);
     }
 }
 
+
 static void output_residual(FlacEncodeContext *ctx, int ch)
 {
     int i, j, p, n, parts;
@@ -1095,32 +1112,33 @@ static void output_residual(FlacEncodeContext *ctx, int ch)
     int32_t *res;
 
     frame = &ctx->frame;
-    sub = &frame->subframes[ch];
-    res = sub->residual;
-    n = frame->blocksize;
+    sub   = &frame->subframes[ch];
+    res   = sub->residual;
+    n     = frame->blocksize;
 
     /* rice-encoded block */
     put_bits(&ctx->pb, 2, 0);
 
     /* partition order */
-    porder = sub->rc.porder;
-    psize = n >> porder;
-    parts = (1 << porder);
+    porder  = sub->rc.porder;
+    psize   = n >> porder;
+    parts   = (1 << porder);
     put_bits(&ctx->pb, 4, porder);
     res_cnt = psize - sub->order;
 
     /* residual */
     j = sub->order;
-    for(p=0; p<parts; p++) {
+    for (p = 0; p < parts; p++) {
         k = sub->rc.params[p];
         put_bits(&ctx->pb, 4, k);
-        if(p == 1) res_cnt = psize;
-        for(i=0; i<res_cnt && j<n; i++, j++) {
+        if (p == 1)
+            res_cnt = psize;
+        for (i = 0; i < res_cnt && j < n; i++, j++)
             set_sr_golomb_flac(&ctx->pb, res[j], k, INT32_MAX, 0);
-        }
     }
 }
 
+
 static void output_subframe_fixed(FlacEncodeContext *ctx, int ch)
 {
     int i;
@@ -1128,17 +1146,17 @@ static void output_subframe_fixed(FlacEncodeContext *ctx, int ch)
     FlacSubframe *sub;
 
     frame = &ctx->frame;
-    sub = &frame->subframes[ch];
+    sub   = &frame->subframes[ch];
 
     /* warm-up samples */
-    for(i=0; i<sub->order; i++) {
+    for (i = 0; i < sub->order; i++)
         put_sbits(&ctx->pb, sub->obits, sub->residual[i]);
-    }
 
     /* residual */
     output_residual(ctx, ch);
 }
 
+
 static void output_subframe_lpc(FlacEncodeContext *ctx, int ch)
 {
     int i, cbits;
@@ -1149,22 +1167,21 @@ static void output_subframe_lpc(FlacEncodeContext *ctx, int ch)
     sub = &frame->subframes[ch];
 
     /* warm-up samples */
-    for(i=0; i<sub->order; i++) {
+    for (i = 0; i < sub->order; i++)
         put_sbits(&ctx->pb, sub->obits, sub->residual[i]);
-    }
 
     /* LPC coefficients */
     cbits = ctx->options.lpc_coeff_precision;
-    put_bits(&ctx->pb, 4, cbits-1);
+    put_bits( &ctx->pb, 4, cbits-1);
     put_sbits(&ctx->pb, 5, sub->shift);
-    for(i=0; i<sub->order; i++) {
+    for (i = 0; i < sub->order; i++)
         put_sbits(&ctx->pb, cbits, sub->coefs[i]);
-    }
 
     /* residual */
     output_residual(ctx, ch);
 }
 
+
 static void output_subframes(FlacEncodeContext *s)
 {
     FlacFrame *frame;
@@ -1173,7 +1190,7 @@ static void output_subframes(FlacEncodeContext *s)
 
     frame = &s->frame;
 
-    for(ch=0; ch<s->channels; ch++) {
+    for (ch = 0; ch < s->channels; ch++) {
         sub = &frame->subframes[ch];
 
         /* subframe header */
@@ -1182,33 +1199,34 @@ static void output_subframes(FlacEncodeContext *s)
         put_bits(&s->pb, 1, 0); /* no wasted bits */
 
         /* subframe */
-        if(sub->type == FLAC_SUBFRAME_CONSTANT) {
+        if(sub->type == FLAC_SUBFRAME_CONSTANT)
             output_subframe_constant(s, ch);
-        } else if(sub->type == FLAC_SUBFRAME_VERBATIM) {
+        else if(sub->type == FLAC_SUBFRAME_VERBATIM)
             output_subframe_verbatim(s, ch);
-        } else if(sub->type == FLAC_SUBFRAME_FIXED) {
+        else if(sub->type == FLAC_SUBFRAME_FIXED)
             output_subframe_fixed(s, ch);
-        } else if(sub->type == FLAC_SUBFRAME_LPC) {
+        else if(sub->type == FLAC_SUBFRAME_LPC)
             output_subframe_lpc(s, ch);
-        }
     }
 }
 
+
 static void output_frame_footer(FlacEncodeContext *s)
 {
     int crc;
     flush_put_bits(&s->pb);
-    crc = av_bswap16(av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0,
-                          s->pb.buf, put_bits_count(&s->pb)>>3));
+    crc = av_bswap16(av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, s->pb.buf,
+                            put_bits_count(&s->pb)>>3));
     put_bits(&s->pb, 16, crc);
     flush_put_bits(&s->pb);
 }
 
+
 static void update_md5_sum(FlacEncodeContext *s, const int16_t *samples)
 {
 #if HAVE_BIGENDIAN
     int i;
-    for(i = 0; i < s->frame.blocksize*s->channels; i++) {
+    for (i = 0; i < s->frame.blocksize * s->channels; i++) {
         int16_t smp = av_le2ne16(samples[i]);
         av_md5_update(s->md5ctx, (uint8_t *)&smp, 2);
     }
@@ -1217,6 +1235,7 @@ static void update_md5_sum(FlacEncodeContext *s, const int16_t *samples)
 #endif
 }
 
+
 static int flac_encode_frame(AVCodecContext *avctx, uint8_t *frame,
                              int buf_size, void *data)
 {
@@ -1228,7 +1247,7 @@ static int flac_encode_frame(AVCodecContext *avctx, uint8_t *frame,
 
     s = avctx->priv_data;
 
-    if(buf_size < s->max_framesize*2) {
+    if (buf_size < s->max_framesize * 2) {
         av_log(avctx, AV_LOG_ERROR, "output buffer too small\n");
         return 0;
     }
@@ -1247,9 +1266,8 @@ static int flac_encode_frame(AVCodecContext *avctx, uint8_t *frame,
 
     channel_decorrelation(s);
 
-    for(ch=0; ch<s->channels; ch++) {
+    for (ch = 0; ch < s->channels; ch++)
         encode_residual(s, ch);
-    }
 
 write_frame:
     init_put_bits(&s->pb, frame, buf_size);
@@ -1258,17 +1276,16 @@ write_frame:
     output_frame_footer(s);
     out_bytes = put_bits_count(&s->pb) >> 3;
 
-    if(out_bytes > s->max_framesize) {
-        if(reencoded) {
+    if (out_bytes > s->max_framesize) {
+        if (reencoded) {
             /* still too large. must be an error. */
             av_log(avctx, AV_LOG_ERROR, "error encoding frame\n");
             return -1;
         }
 
         /* frame too large. use verbatim mode */
-        for(ch=0; ch<s->channels; ch++) {
+        for (ch = 0; ch < s->channels; ch++)
             encode_residual_v(s, ch);
-        }
         reencoded = 1;
         goto write_frame;
     }
@@ -1284,6 +1301,7 @@ write_frame:
     return out_bytes;
 }
 
+
 static av_cold int flac_encode_close(AVCodecContext *avctx)
 {
     if (avctx->priv_data) {
@@ -1296,6 +1314,7 @@ static av_cold int flac_encode_close(AVCodecContext *avctx)
     return 0;
 }
 
+
 AVCodec flac_encoder = {
     "flac",
     AVMEDIA_TYPE_AUDIO,