mjpegdec: K&R formatting cosmetics
authorDaniel Huang <dtvrij74@gmail.com>
Sun, 8 Jan 2012 19:14:37 +0000 (13:14 -0600)
committerDiego Biurrun <diego@biurrun.de>
Sun, 8 Jan 2012 22:33:00 +0000 (23:33 +0100)
Signed-off-by: Diego Biurrun <diego@biurrun.de>
libavcodec/mjpegdec.c

index 7a85c16..2ae502d 100644 (file)
@@ -30,7 +30,7 @@
  * MJPEG decoder.
  */
 
-//#define DEBUG
+// #define DEBUG
 #include <assert.h>
 
 #include "libavutil/imgutils.h"
@@ -42,8 +42,9 @@
 #include "jpeglsdec.h"
 
 
-static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_table,
-                      int nb_codes, int use_static, int is_ac)
+static int build_vlc(VLC *vlc, const uint8_t *bits_table,
+                     const uint8_t *val_table, int nb_codes,
+                     int use_static, int is_ac)
 {
     uint8_t huff_size[256];
     uint16_t huff_code[256];
@@ -55,15 +56,18 @@ static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_tab
     memset(huff_size, 0, sizeof(huff_size));
     ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table);
 
-    for(i=0; i<256; i++)
-        huff_sym[i]= i + 16*is_ac;
+    for (i = 0; i < 256; i++)
+        huff_sym[i] = i + 16 * is_ac;
 
-    if(is_ac) huff_sym[0]= 16*256;
+    if (is_ac)
+        huff_sym[0] = 16 * 256;
 
-    return init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1, huff_code, 2, 2, huff_sym, 2, 2, use_static);
+    return init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1,
+                           huff_code, 2, 2, huff_sym, 2, 2, use_static);
 }
 
-static void build_basic_mjpeg_vlc(MJpegDecodeContext * s) {
+static void build_basic_mjpeg_vlc(MJpegDecodeContext *s)
+{
     build_vlc(&s->vlcs[0][0], ff_mjpeg_bits_dc_luminance,
               ff_mjpeg_val_dc, 12, 0, 0);
     build_vlc(&s->vlcs[0][1], ff_mjpeg_bits_dc_chrominance,
@@ -88,11 +92,11 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
     s->avctx = avctx;
     dsputil_init(&s->dsp, avctx);
     ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
-    s->buffer_size = 0;
-    s->buffer = NULL;
-    s->start_code = -1;
+    s->buffer_size   = 0;
+    s->buffer        = NULL;
+    s->start_code    = -1;
     s->first_picture = 1;
-    s->org_height = avctx->coded_height;
+    s->org_height    = avctx->coded_height;
     avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
 
     build_basic_mjpeg_vlc(s);
@@ -101,17 +105,17 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
     if (avctx->flags & CODEC_FLAG_EXTERN_HUFF)
         s->extern_huff = 1;
 #endif
-    if (s->extern_huff)
-    {
+    if (s->extern_huff) {
         av_log(avctx, AV_LOG_INFO, "mjpeg: using external huffman table\n");
-        init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size*8);
+        init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8);
         if (ff_mjpeg_decode_dht(s)) {
-            av_log(avctx, AV_LOG_ERROR, "mjpeg: error using external huffman table\n");
+            av_log(avctx, AV_LOG_ERROR,
+                   "mjpeg: error using external huffman table\n");
             return AVERROR_INVALIDDATA;
         }
     }
     if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
-        s->interlace_polarity = 1; /* bottom field first */
+        s->interlace_polarity = 1;           /* bottom field first */
         av_log(avctx, AV_LOG_DEBUG, "mjpeg bottom field first\n");
     }
     if (avctx->codec->id == CODEC_ID_AMV)
@@ -130,8 +134,7 @@ int ff_mjpeg_decode_dqt(MJpegDecodeContext *s)
 
     while (len >= 65) {
         /* only 8 bit precision handled */
-        if (get_bits(&s->gb, 4) != 0)
-        {
+        if (get_bits(&s->gb, 4) != 0) {
             av_log(s->avctx, AV_LOG_ERROR, "dqt: 16bit precision\n");
             return -1;
         }
@@ -140,19 +143,18 @@ int ff_mjpeg_decode_dqt(MJpegDecodeContext *s)
             return -1;
         av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index);
         /* read quant table */
-        for(i=0;i<64;i++) {
+        for (i = 0; i < 64; i++) {
             j = s->scantable.permutated[i];
             s->quant_matrixes[index][j] = get_bits(&s->gb, 8);
         }
 
-        //XXX FIXME finetune, and perhaps add dc too
-        s->qscale[index]= FFMAX(
-            s->quant_matrixes[index][s->scantable.permutated[1]],
-            s->quant_matrixes[index][s->scantable.permutated[8]]) >> 1;
-        av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n", index, s->qscale[index]);
+        // XXX FIXME finetune, and perhaps add dc too
+        s->qscale[index] = FFMAX(s->quant_matrixes[index][s->scantable.permutated[1]],
+                                 s->quant_matrixes[index][s->scantable.permutated[8]]) >> 1;
+        av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n",
+               index, s->qscale[index]);
         len -= 65;
     }
-
     return 0;
 }
 
@@ -175,7 +177,7 @@ int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
         if (index >= 4)
             return -1;
         n = 0;
-        for(i=1;i<=16;i++) {
+        for (i = 1; i <= 16; i++) {
             bits_table[i] = get_bits(&s->gb, 8);
             n += bits_table[i];
         }
@@ -184,7 +186,7 @@ int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
             return -1;
 
         code_max = 0;
-        for(i=0;i<n;i++) {
+        for (i = 0; i < n; i++) {
             v = get_bits(&s->gb, 8);
             if (v > code_max)
                 code_max = v;
@@ -196,15 +198,15 @@ int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
         free_vlc(&s->vlcs[class][index]);
         av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n",
                class, index, code_max + 1);
-        if(build_vlc(&s->vlcs[class][index], bits_table, val_table, code_max + 1, 0, class > 0) < 0){
+        if (build_vlc(&s->vlcs[class][index], bits_table, val_table,
+                      code_max + 1, 0, class > 0) < 0)
             return -1;
-        }
 
-        if(class>0){
+        if (class > 0) {
             free_vlc(&s->vlcs[2][index]);
-            if(build_vlc(&s->vlcs[2][index], bits_table, val_table, code_max + 1, 0, 0) < 0){
-            return -1;
-            }
+            if (build_vlc(&s->vlcs[2][index], bits_table, val_table,
+                          code_max + 1, 0, 0) < 0)
+                return -1;
         }
     }
     return 0;
@@ -215,44 +217,47 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
     int len, nb_components, i, width, height, pix_fmt_id;
 
     /* XXX: verify len field validity */
-    len = get_bits(&s->gb, 16);
-    s->bits= get_bits(&s->gb, 8);
+    len     = get_bits(&s->gb, 16);
+    s->bits = get_bits(&s->gb, 8);
 
-    if(s->pegasus_rct) s->bits=9;
-    if(s->bits==9 && !s->pegasus_rct) s->rct=1;    //FIXME ugly
+    if (s->pegasus_rct)
+        s->bits = 9;
+    if (s->bits == 9 && !s->pegasus_rct)
+        s->rct  = 1;    // FIXME ugly
 
-    if (s->bits != 8 && !s->lossless){
+    if (s->bits != 8 && !s->lossless) {
         av_log(s->avctx, AV_LOG_ERROR, "only 8 bits/component accepted\n");
         return -1;
     }
 
     height = get_bits(&s->gb, 16);
-    width = get_bits(&s->gb, 16);
+    width  = get_bits(&s->gb, 16);
 
-    //HACK for odd_height.mov
-    if(s->interlaced && s->width == width && s->height == height + 1)
+    // HACK for odd_height.mov
+    if (s->interlaced && s->width == width && s->height == height + 1)
         height= s->height;
 
     av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height);
-    if(av_image_check_size(width, height, 0, s->avctx))
+    if (av_image_check_size(width, height, 0, s->avctx))
         return -1;
 
     nb_components = get_bits(&s->gb, 8);
     if (nb_components <= 0 ||
         nb_components > MAX_COMPONENTS)
         return -1;
-    if (s->ls && !(s->bits <= 8 || nb_components == 1)){
-        av_log(s->avctx, AV_LOG_ERROR, "only <= 8 bits/component or 16-bit gray accepted for JPEG-LS\n");
+    if (s->ls && !(s->bits <= 8 || nb_components == 1)) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "only <= 8 bits/component or 16-bit gray accepted for JPEG-LS\n");
         return -1;
     }
     s->nb_components = nb_components;
-    s->h_max = 1;
-    s->v_max = 1;
-    for(i=0;i<nb_components;i++) {
+    s->h_max         = 1;
+    s->v_max         = 1;
+    for (i = 0; i < nb_components; i++) {
         /* component id */
         s->component_id[i] = get_bits(&s->gb, 8) - 1;
-        s->h_count[i] = get_bits(&s->gb, 4);
-        s->v_count[i] = get_bits(&s->gb, 4);
+        s->h_count[i]      = get_bits(&s->gb, 4);
+        s->v_count[i]      = get_bits(&s->gb, 4);
         /* compute hmax and vmax (only used in interleaved case) */
         if (s->h_count[i] > s->h_max)
             s->h_max = s->h_count[i];
@@ -261,45 +266,47 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
         s->quant_index[i] = get_bits(&s->gb, 8);
         if (s->quant_index[i] >= 4)
             return -1;
-        av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n", i, s->h_count[i],
-               s->v_count[i], s->component_id[i], s->quant_index[i]);
+        av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n",
+               i, s->h_count[i], s->v_count[i],
+               s->component_id[i], s->quant_index[i]);
     }
 
-    if(s->ls && (s->h_max > 1 || s->v_max > 1)) {
-        av_log(s->avctx, AV_LOG_ERROR, "Subsampling in JPEG-LS is not supported.\n");
+    if (s->ls && (s->h_max > 1 || s->v_max > 1)) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "Subsampling in JPEG-LS is not supported.\n");
         return -1;
     }
 
-    if(s->v_max==1 && s->h_max==1 && s->lossless==1) s->rgb=1;
+    if (s->v_max == 1 && s->h_max == 1 && s->lossless == 1)
+        s->rgb = 1;
 
     /* if different size, realloc/alloc picture */
     /* XXX: also check h_count and v_count */
     if (width != s->width || height != s->height) {
         av_freep(&s->qscale_table);
 
-        s->width = width;
-        s->height = height;
+        s->width      = width;
+        s->height     = height;
         s->interlaced = 0;
 
         /* test interlaced mode */
-        if (s->first_picture &&
+        if (s->first_picture   &&
             s->org_height != 0 &&
             s->height < ((s->org_height * 3) / 4)) {
-            s->interlaced = 1;
-            s->bottom_field = s->interlace_polarity;
+            s->interlaced                    = 1;
+            s->bottom_field                  = s->interlace_polarity;
             s->picture_ptr->interlaced_frame = 1;
-            s->picture_ptr->top_field_first = !s->interlace_polarity;
+            s->picture_ptr->top_field_first  = !s->interlace_polarity;
             height *= 2;
         }
 
         avcodec_set_dimensions(s->avctx, width, height);
 
-        s->qscale_table= av_mallocz((s->width+15)/16);
-
+        s->qscale_table  = av_mallocz((s->width + 15) / 16);
         s->first_picture = 0;
     }
 
-    if(s->interlaced && (s->bottom_field == !s->interlace_polarity))
+    if (s->interlaced && (s->bottom_field == !s->interlace_polarity))
         return 0;
 
     /* XXX: not complete test ! */
@@ -308,19 +315,20 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
                  (s->h_count[2] << 12) | (s->v_count[2] <<  8) |
                  (s->h_count[3] <<  4) |  s->v_count[3];
     av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id);
-    //NOTE we do not allocate pictures large enough for the possible padding of h/v_count being 4
-    if(!(pix_fmt_id & 0xD0D0D0D0))
-        pix_fmt_id-= (pix_fmt_id & 0xF0F0F0F0)>>1;
-    if(!(pix_fmt_id & 0x0D0D0D0D))
-        pix_fmt_id-= (pix_fmt_id & 0x0F0F0F0F)>>1;
-
-    switch(pix_fmt_id){
+    /* NOTE we do not allocate pictures large enough for the possible
+     * padding of h/v_count being 4 */
+    if (!(pix_fmt_id & 0xD0D0D0D0))
+        pix_fmt_id -= (pix_fmt_id & 0xF0F0F0F0) >> 1;
+    if (!(pix_fmt_id & 0x0D0D0D0D))
+        pix_fmt_id -= (pix_fmt_id & 0x0F0F0F0F) >> 1;
+
+    switch (pix_fmt_id) {
     case 0x11111100:
-        if(s->rgb){
+        if (s->rgb)
             s->avctx->pix_fmt = PIX_FMT_BGRA;
-        }else
+        else
             s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV444P : PIX_FMT_YUVJ444P;
-        assert(s->nb_components==3);
+        assert(s->nb_components == 3);
         break;
     case 0x11000000:
         s->avctx->pix_fmt = PIX_FMT_GRAY8;
@@ -338,47 +346,46 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
         av_log(s->avctx, AV_LOG_ERROR, "Unhandled pixel format 0x%x\n", pix_fmt_id);
         return -1;
     }
-    if(s->ls){
-        if(s->nb_components > 1)
+    if (s->ls) {
+        if (s->nb_components > 1)
             s->avctx->pix_fmt = PIX_FMT_RGB24;
-        else if(s->bits <= 8)
+        else if (s->bits <= 8)
             s->avctx->pix_fmt = PIX_FMT_GRAY8;
         else
             s->avctx->pix_fmt = PIX_FMT_GRAY16;
     }
 
-    if(s->picture_ptr->data[0])
+    if (s->picture_ptr->data[0])
         s->avctx->release_buffer(s->avctx, s->picture_ptr);
 
-    if(s->avctx->get_buffer(s->avctx, s->picture_ptr) < 0){
+    if (s->avctx->get_buffer(s->avctx, s->picture_ptr) < 0) {
         av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return -1;
     }
-    s->picture_ptr->pict_type= AV_PICTURE_TYPE_I;
-    s->picture_ptr->key_frame= 1;
-    s->got_picture = 1;
+    s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
+    s->picture_ptr->key_frame = 1;
+    s->got_picture            = 1;
 
-    for(i=0; i<3; i++){
-        s->linesize[i]= s->picture_ptr->linesize[i] << s->interlaced;
-    }
+    for (i = 0; i < 3; i++)
+        s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced;
 
-//    printf("%d %d %d %d %d %d\n", s->width, s->height, s->linesize[0], s->linesize[1], s->interlaced, s->avctx->height);
+//    printf("%d %d %d %d %d %d\n",
+//           s->width, s->height, s->linesize[0], s->linesize[1],
+//           s->interlaced, s->avctx->height);
 
-    if (len != (8+(3*nb_components)))
-    {
+    if (len != (8 + (3 * nb_components)))
         av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len);
-    }
 
     /* totally blank picture as progressive JPEG will only add details to it */
-    if(s->progressive){
-        int bw = (width  + s->h_max*8-1) / (s->h_max*8);
-        int bh = (height + s->v_max*8-1) / (s->v_max*8);
-        for(i=0; i<s->nb_components; i++) {
+    if (s->progressive) {
+        int bw = (width  + s->h_max * 8 - 1) / (s->h_max * 8);
+        int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8);
+        for (i = 0; i < s->nb_components; i++) {
             int size = bw * bh * s->h_count[i] * s->v_count[i];
             av_freep(&s->blocks[i]);
             av_freep(&s->last_nnz[i]);
-            s->blocks[i] = av_malloc(size * sizeof(**s->blocks));
-            s->last_nnz[i] = av_mallocz(size * sizeof(**s->last_nnz));
+            s->blocks[i]       = av_malloc(size * sizeof(**s->blocks));
+            s->last_nnz[i]     = av_mallocz(size * sizeof(**s->last_nnz));
             s->block_stride[i] = bw * s->h_count[i];
         }
         memset(s->coefs_finished, 0, sizeof(s->coefs_finished));
@@ -390,22 +397,22 @@ static inline int mjpeg_decode_dc(MJpegDecodeContext *s, int dc_index)
 {
     int code;
     code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2);
-    if (code < 0)
-    {
-        av_log(s->avctx, AV_LOG_WARNING, "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n", 0, dc_index,
-               &s->vlcs[0][dc_index]);
+    if (code < 0) {
+        av_log(s->avctx, AV_LOG_WARNING,
+               "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n",
+               0, dc_index, &s->vlcs[0][dc_index]);
         return 0xffff;
     }
 
-    if(code)
+    if (code)
         return get_xbits(&s->gb, code);
     else
         return 0;
 }
 
 /* decode block and dequantize */
-static int decode_block(MJpegDecodeContext *s, DCTELEM *block,
-                        int component, int dc_index, int ac_index, int16_t *quant_matrix)
+static int decode_block(MJpegDecodeContext *s, DCTELEM *block, int component,
+                        int dc_index, int ac_index, int16_t *quant_matrix)
 {
     int code, i, j, level, val;
 
@@ -427,14 +434,14 @@ static int decode_block(MJpegDecodeContext *s, DCTELEM *block,
 
         i += ((unsigned)code) >> 4;
             code &= 0xf;
-        if(code){
-            if(code > MIN_CACHE_BITS - 16){
+        if (code) {
+            if (code > MIN_CACHE_BITS - 16)
                 UPDATE_CACHE(re, &s->gb);
-            }
+
             {
-                int cache=GET_CACHE(re,&s->gb);
-                int sign=(~cache)>>31;
-                level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
+                int cache = GET_CACHE(re, &s->gb);
+                int sign  = (~cache) >> 31;
+                level     = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
             }
 
             LAST_SKIP_BITS(re, &s->gb, code);
@@ -443,17 +450,18 @@ static int decode_block(MJpegDecodeContext *s, DCTELEM *block,
                 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
                 return -1;
             }
-            j = s->scantable.permutated[i];
+            j        = s->scantable.permutated[i];
             block[j] = level * quant_matrix[j];
         }
-    }while(i<63);
+    } while (i < 63);
     CLOSE_READER(re, &s->gb);}
 
     return 0;
 }
 
-static int decode_dc_progressive(MJpegDecodeContext *s, DCTELEM *block, int component,
-                                 int dc_index, int16_t *quant_matrix, int Al)
+static int decode_dc_progressive(MJpegDecodeContext *s, DCTELEM *block,
+                                 int component, int dc_index,
+                                 int16_t *quant_matrix, int Al)
 {
     int val;
     s->dsp.clear_block(block);
@@ -469,113 +477,121 @@ static int decode_dc_progressive(MJpegDecodeContext *s, DCTELEM *block, int comp
 }
 
 /* decode block and dequantize - progressive JPEG version */
-static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block, uint8_t *last_nnz,
-                                    int ac_index, int16_t *quant_matrix,
+static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block,
+                                    uint8_t *last_nnz, int ac_index,
+                                    int16_t *quant_matrix,
                                     int ss, int se, int Al, int *EOBRUN)
 {
     int code, i, j, level, val, run;
 
-    if(*EOBRUN){
+    if (*EOBRUN) {
         (*EOBRUN)--;
         return 0;
     }
-    {OPEN_READER(re, &s->gb);
-    for(i=ss;;i++) {
-        UPDATE_CACHE(re, &s->gb);
-        GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
 
-        run = ((unsigned) code) >> 4;
-        code &= 0xF;
-        if(code) {
-            i += run;
-            if(code > MIN_CACHE_BITS - 16){
-                UPDATE_CACHE(re, &s->gb);
-            }
-            {
-                int cache=GET_CACHE(re,&s->gb);
-                int sign=(~cache)>>31;
-                level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
-            }
+    {
+        OPEN_READER(re, &s->gb);
+        for (i = ss; ; i++) {
+            UPDATE_CACHE(re, &s->gb);
+            GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
 
-            LAST_SKIP_BITS(re, &s->gb, code);
+            run = ((unsigned) code) >> 4;
+            code &= 0xF;
+            if (code) {
+                i += run;
+                if (code > MIN_CACHE_BITS - 16)
+                    UPDATE_CACHE(re, &s->gb);
 
-            if (i >= se) {
-                if(i == se){
-                    j = s->scantable.permutated[se];
-                    block[j] = level * quant_matrix[j] << Al;
-                    break;
+                {
+                    int cache = GET_CACHE(re, &s->gb);
+                    int sign  = (~cache) >> 31;
+                    level     = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
                 }
-                av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
-                return -1;
-            }
-            j = s->scantable.permutated[i];
-            block[j] = level * quant_matrix[j] << Al;
-        }else{
-            if(run == 0xF){// ZRL - skip 15 coefficients
-                i += 15;
+
+                LAST_SKIP_BITS(re, &s->gb, code);
+
                 if (i >= se) {
-                    av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
+                    if (i == se) {
+                        j = s->scantable.permutated[se];
+                        block[j] = level * quant_matrix[j] << Al;
+                        break;
+                    }
+                    av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
                     return -1;
                 }
-            }else{
-                val = (1 << run);
-                if(run){
-                    UPDATE_CACHE(re, &s->gb);
-                    val += NEG_USR32(GET_CACHE(re, &s->gb), run);
-                    LAST_SKIP_BITS(re, &s->gb, run);
+                j = s->scantable.permutated[i];
+                block[j] = level * quant_matrix[j] << Al;
+            } else {
+                if (run == 0xF) {// ZRL - skip 15 coefficients
+                    i += 15;
+                    if (i >= se) {
+                        av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
+                        return -1;
+                    }
+                } else {
+                    val = (1 << run);
+                    if (run) {
+                        UPDATE_CACHE(re, &s->gb);
+                        val += NEG_USR32(GET_CACHE(re, &s->gb), run);
+                        LAST_SKIP_BITS(re, &s->gb, run);
+                    }
+                    *EOBRUN = val - 1;
+                    break;
                 }
-                *EOBRUN = val - 1;
-                break;
             }
         }
+        CLOSE_READER(re, &s->gb);
     }
-    CLOSE_READER(re, &s->gb);}
-    if(i > *last_nnz)
+
+    if (i > *last_nnz)
         *last_nnz = i;
+
     return 0;
 }
 
-#define REFINE_BIT(j) {\
-    UPDATE_CACHE(re, &s->gb);\
-    sign = block[j]>>15;\
-    block[j] += SHOW_UBITS(re, &s->gb, 1) * ((quant_matrix[j]^sign)-sign) << Al;\
-    LAST_SKIP_BITS(re, &s->gb, 1);\
+#define REFINE_BIT(j) {                                             \
+    UPDATE_CACHE(re, &s->gb);                                       \
+    sign = block[j] >> 15;                                          \
+    block[j] += SHOW_UBITS(re, &s->gb, 1) *                         \
+                ((quant_matrix[j] ^ sign) - sign) << Al;            \
+    LAST_SKIP_BITS(re, &s->gb, 1);                                  \
 }
 
-#define ZERO_RUN \
-for(;;i++) {\
-    if(i > last) {\
-        i += run;\
-        if(i > se) {\
-            av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);\
-            return -1;\
-        }\
-        break;\
-    }\
-    j = s->scantable.permutated[i];\
-    if(block[j])\
-        REFINE_BIT(j)\
-    else if(run-- == 0)\
-        break;\
+#define ZERO_RUN                                                    \
+for (; ; i++) {                                                     \
+    if (i > last) {                                                 \
+        i += run;                                                   \
+        if (i > se) {                                               \
+            av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \
+            return -1;                                              \
+        }                                                           \
+        break;                                                      \
+    }                                                               \
+    j = s->scantable.permutated[i];                                 \
+    if (block[j])                                                   \
+        REFINE_BIT(j)                                               \
+    else if (run-- == 0)                                            \
+        break;                                                      \
 }
 
 /* decode block and dequantize - progressive JPEG refinement pass */
-static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_t *last_nnz,
-                        int ac_index, int16_t *quant_matrix,
-                        int ss, int se, int Al, int *EOBRUN)
+static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block,
+                                   uint8_t *last_nnz,
+                                   int ac_index, int16_t *quant_matrix,
+                                   int ss, int se, int Al, int *EOBRUN)
 {
-    int code, i=ss, j, sign, val, run;
-    int last = FFMIN(se, *last_nnz);
+    int code, i = ss, j, sign, val, run;
+    int last    = FFMIN(se, *last_nnz);
 
     OPEN_READER(re, &s->gb);
-    if(*EOBRUN)
+    if (*EOBRUN) {
         (*EOBRUN)--;
-    else {
-        for(;;i++) {
+    else {
+        for (; ; i++) {
             UPDATE_CACHE(re, &s->gb);
             GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
 
-            if(code & 0xF) {
+            if (code & 0xF) {
                 run = ((unsigned) code) >> 4;
                 UPDATE_CACHE(re, &s->gb);
                 val = SHOW_UBITS(re, &s->gb, 1);
@@ -583,21 +599,21 @@ static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_
                 ZERO_RUN;
                 j = s->scantable.permutated[i];
                 val--;
-                block[j] = ((quant_matrix[j]^val)-val) << Al;
-                if(i == se) {
-                    if(i > *last_nnz)
+                block[j] = ((quant_matrix[j]^val) - val) << Al;
+                if (i == se) {
+                    if (i > *last_nnz)
                         *last_nnz = i;
                     CLOSE_READER(re, &s->gb);
                     return 0;
                 }
-            }else{
+            } else {
                 run = ((unsigned) code) >> 4;
-                if(run == 0xF){
+                if (run == 0xF) {
                     ZERO_RUN;
-                }else{
+                } else {
                     val = run;
                     run = (1 << run);
-                    if(val) {
+                    if (val) {
                         UPDATE_CACHE(re, &s->gb);
                         run += SHOW_UBITS(re, &s->gb, val);
                         LAST_SKIP_BITS(re, &s->gb, val);
@@ -608,13 +624,13 @@ static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_
             }
         }
 
-        if(i > *last_nnz)
+        if (i > *last_nnz)
             *last_nnz = i;
     }
 
-    for(;i<=last;i++) {
+    for (; i <= last; i++) {
         j = s->scantable.permutated[i];
-        if(block[j])
+        if (block[j])
             REFINE_BIT(j)
     }
     CLOSE_READER(re, &s->gb);
@@ -624,43 +640,46 @@ static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_
 #undef REFINE_BIT
 #undef ZERO_RUN
 
-static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point_transform){
+static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor,
+                                 int point_transform)
+{
     int i, mb_x, mb_y;
     uint16_t (*buffer)[4];
     int left[3], top[3], topleft[3];
-    const int linesize= s->linesize[0];
-    const int mask= (1<<s->bits)-1;
+    const int linesize = s->linesize[0];
+    const int mask     = (1 << s->bits) - 1;
 
-    av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size, (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
-    buffer= s->ljpeg_buffer;
+    av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size,
+                   (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
+    buffer = s->ljpeg_buffer;
 
-    for(i=0; i<3; i++){
-        buffer[0][i]= 1 << (s->bits + point_transform - 1);
-    }
-    for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
-        const int modified_predictor= mb_y ? predictor : 1;
+    for (i = 0; i < 3; i++)
+        buffer[0][i] = 1 << (s->bits + point_transform - 1);
+
+    for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+        const int modified_predictor = mb_y ? predictor : 1;
         uint8_t *ptr = s->picture_ptr->data[0] + (linesize * mb_y);
 
         if (s->interlaced && s->bottom_field)
             ptr += linesize >> 1;
 
-        for(i=0; i<3; i++){
-            top[i]= left[i]= topleft[i]= buffer[0][i];
-        }
-        for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
+        for (i = 0; i < 3; i++)
+            top[i] = left[i] = topleft[i] = buffer[0][i];
+
+        for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
             if (s->restart_interval && !s->restart_count)
                 s->restart_count = s->restart_interval;
 
-            for(i=0;i<3;i++) {
+            for (i = 0; i < 3; i++) {
                 int pred;
 
-                topleft[i]= top[i];
-                top[i]= buffer[mb_x][i];
+                topleft[i] = top[i];
+                top[i]     = buffer[mb_x][i];
 
                 PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
 
-                left[i]=
-                buffer[mb_x][i]= mask & (pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform));
+                left[i] = buffer[mb_x][i] =
+                    mask & (pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform));
             }
 
             if (s->restart_interval && !--s->restart_count) {
@@ -669,71 +688,74 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point
             }
         }
 
-        if(s->rct){
-            for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
-                ptr[4*mb_x+1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200)>>2);
-                ptr[4*mb_x+0] = buffer[mb_x][1] + ptr[4*mb_x+1];
-                ptr[4*mb_x+2] = buffer[mb_x][2] + ptr[4*mb_x+1];
+        if (s->rct) {
+            for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+                ptr[4 * mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2);
+                ptr[4 * mb_x + 0] = buffer[mb_x][1] + ptr[4 * mb_x + 1];
+                ptr[4 * mb_x + 2] = buffer[mb_x][2] + ptr[4 * mb_x + 1];
             }
-        }else if(s->pegasus_rct){
-            for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
-                ptr[4*mb_x+1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2])>>2);
-                ptr[4*mb_x+0] = buffer[mb_x][1] + ptr[4*mb_x+1];
-                ptr[4*mb_x+2] = buffer[mb_x][2] + ptr[4*mb_x+1];
+        } else if (s->pegasus_rct) {
+            for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+                ptr[4 * mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2]) >> 2);
+                ptr[4 * mb_x + 0] = buffer[mb_x][1] + ptr[4 * mb_x + 1];
+                ptr[4 * mb_x + 2] = buffer[mb_x][2] + ptr[4 * mb_x + 1];
             }
-        }else{
-            for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
-                ptr[4*mb_x+0] = buffer[mb_x][2];
-                ptr[4*mb_x+1] = buffer[mb_x][1];
-                ptr[4*mb_x+2] = buffer[mb_x][0];
+        } else {
+            for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+                ptr[4 * mb_x + 0] = buffer[mb_x][2];
+                ptr[4 * mb_x + 1] = buffer[mb_x][1];
+                ptr[4 * mb_x + 2] = buffer[mb_x][0];
             }
         }
     }
     return 0;
 }
 
-static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point_transform){
+static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
+                                 int point_transform)
+{
     int i, mb_x, mb_y;
-    const int nb_components=3;
+    const int nb_components = 3;
 
-    for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
-        for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
+    for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+        for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
             if (s->restart_interval && !s->restart_count)
                 s->restart_count = s->restart_interval;
 
-            if(mb_x==0 || mb_y==0 || s->interlaced){
-                for(i=0;i<nb_components;i++) {
+            if (mb_x == 0 || mb_y == 0 || s->interlaced) {
+                for (i = 0; i < nb_components; i++) {
                     uint8_t *ptr;
                     int n, h, v, x, y, c, j, linesize;
-                    n = s->nb_blocks[i];
-                    c = s->comp_index[i];
-                    h = s->h_scount[i];
-                    v = s->v_scount[i];
-                    x = 0;
-                    y = 0;
-                    linesize= s->linesize[c];
-
-                    for(j=0; j<n; j++) {
+                    n        = s->nb_blocks[i];
+                    c        = s->comp_index[i];
+                    h        = s->h_scount[i];
+                    v        = s->v_scount[i];
+                    x        = 0;
+                    y        = 0;
+                    linesize = s->linesize[c];
+
+                    for (j = 0; j < n; j++) {
                         int pred;
-
-                        ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
-                        if(y==0 && mb_y==0){
-                            if(x==0 && mb_x==0){
-                                pred= 128 << point_transform;
-                            }else{
-                                pred= ptr[-1];
-                            }
-                        }else{
-                            if(x==0 && mb_x==0){
-                                pred= ptr[-linesize];
-                            }else{
-                                PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
-                            }
-                        }
+                        // FIXME optimize this crap
+                        ptr = s->picture_ptr->data[c] +
+                              (linesize * (v * mb_y + y)) +
+                              (h * mb_x + x);
+                        if (y == 0 && mb_y == 0) {
+                            if (x == 0 && mb_x == 0)
+                                pred = 128 << point_transform;
+                            else
+                                pred = ptr[-1];
+                        } else {
+                            if (x == 0 && mb_x == 0)
+                                pred = ptr[-linesize];
+                            else
+                                PREDICT(pred, ptr[-linesize - 1],
+                                        ptr[-linesize], ptr[-1], predictor);
+                       }
 
                         if (s->interlaced && s->bottom_field)
                             ptr += linesize >> 1;
-                        *ptr= pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
+                        *ptr = pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
 
                         if (++x == h) {
                             x = 0;
@@ -741,24 +763,28 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point
                         }
                     }
                 }
-            }else{
-                for(i=0;i<nb_components;i++) {
+            } else {
+                for (i = 0; i < nb_components; i++) {
                     uint8_t *ptr;
                     int n, h, v, x, y, c, j, linesize;
-                    n = s->nb_blocks[i];
-                    c = s->comp_index[i];
-                    h = s->h_scount[i];
-                    v = s->v_scount[i];
-                    x = 0;
-                    y = 0;
-                    linesize= s->linesize[c];
-
-                    for(j=0; j<n; j++) {
+                    n        = s->nb_blocks[i];
+                    c        = s->comp_index[i];
+                    h        = s->h_scount[i];
+                    v        = s->v_scount[i];
+                    x        = 0;
+                    y        = 0;
+                    linesize = s->linesize[c];
+
+                    for (j = 0; j < n; j++) {
                         int pred;
 
-                        ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
-                        PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
-                        *ptr= pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
+                        // FIXME optimize this crap
+                        ptr = s->picture_ptr->data[c] +
+                              (linesize * (v * mb_y + y)) +
+                              (h * mb_x + x);
+                        PREDICT(pred, ptr[-linesize - 1],
+                                ptr[-linesize], ptr[-1], predictor);
+                        *ptr = pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
                         if (++x == h) {
                             x = 0;
                             y++;
@@ -790,49 +816,54 @@ static av_always_inline void mjpeg_copy_block(uint8_t *dst, const uint8_t *src,
     }
 }
 
-static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, int Al,
-                             const uint8_t *mb_bitmask, const AVFrame *reference){
+static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah,
+                             int Al, const uint8_t *mb_bitmask,
+                             const AVFrame *reference)
+{
     int i, mb_x, mb_y;
-    uint8_tdata[MAX_COMPONENTS];
+    uint8_t *data[MAX_COMPONENTS];
     const uint8_t *reference_data[MAX_COMPONENTS];
     int linesize[MAX_COMPONENTS];
     GetBitContext mb_bitmask_gb;
 
-    if (mb_bitmask) {
-        init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width*s->mb_height);
-    }
+    if (mb_bitmask)
+        init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
 
-    if(s->flipped && s->avctx->flags & CODEC_FLAG_EMU_EDGE) {
-        av_log(s->avctx, AV_LOG_ERROR, "Can not flip image with CODEC_FLAG_EMU_EDGE set!\n");
+    if (s->flipped && s->avctx->flags & CODEC_FLAG_EMU_EDGE) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "Can not flip image with CODEC_FLAG_EMU_EDGE set!\n");
         s->flipped = 0;
     }
-    for(i=0; i < nb_components; i++) {
-        int c = s->comp_index[i];
+
+    for (i = 0; i < nb_components; i++) {
+        int c   = s->comp_index[i];
         data[c] = s->picture_ptr->data[c];
         reference_data[c] = reference ? reference->data[c] : NULL;
-        linesize[c]=s->linesize[c];
+        linesize[c] = s->linesize[c];
         s->coefs_finished[c] |= 1;
-        if(s->flipped) {
-            //picture should be flipped upside-down for this codec
-            int offset = (linesize[c] * (s->v_scount[i] * (8 * s->mb_height -((s->height/s->v_max)&7)) - 1 ));
-            data[c] += offset;
+        if (s->flipped) {
+            // picture should be flipped upside-down for this codec
+            int offset = (linesize[c] * (s->v_scount[i] *
+                         (8 * s->mb_height - ((s->height / s->v_max) & 7)) - 1));
+            data[c]           += offset;
             reference_data[c] += offset;
-            linesize[c] *= -1;
+            linesize[c]       *= -1;
         }
     }
 
-    for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
-        for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
+    for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+        for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
             const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb);
 
             if (s->restart_interval && !s->restart_count)
                 s->restart_count = s->restart_interval;
 
-            if(get_bits_count(&s->gb)>s->gb.size_in_bits){
-                av_log(s->avctx, AV_LOG_ERROR, "overread %d\n", get_bits_count(&s->gb) - s->gb.size_in_bits);
+            if (get_bits_count(&s->gb)>s->gb.size_in_bits) {
+                av_log(s->avctx, AV_LOG_ERROR, "overread %d\n",
+                       get_bits_count(&s->gb) - s->gb.size_in_bits);
                 return -1;
             }
-            for(i=0;i<nb_components;i++) {
+            for (i = 0; i < nb_components; i++) {
                 uint8_t *ptr;
                 int n, h, v, x, y, c, j;
                 int block_offset;
@@ -842,38 +873,48 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i
                 v = s->v_scount[i];
                 x = 0;
                 y = 0;
-                for(j=0;j<n;j++) {
+                for (j = 0; j < n; j++) {
                     block_offset = (((linesize[c] * (v * mb_y + y) * 8) +
                                      (h * mb_x + x) * 8) >> s->avctx->lowres);
 
-                    if(s->interlaced && s->bottom_field)
+                    if (s->interlaced && s->bottom_field)
                         block_offset += linesize[c] >> 1;
                     ptr = data[c] + block_offset;
-                    if(!s->progressive) {
-                        if (copy_mb) {
-                            mjpeg_copy_block(ptr, reference_data[c] + block_offset, linesize[c], s->avctx->lowres);
-                        } else {
-                        s->dsp.clear_block(s->block);
-                        if(decode_block(s, s->block, i,
-                                     s->dc_index[i], s->ac_index[i],
-                                     s->quant_matrixes[ s->quant_index[c] ]) < 0) {
-                            av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
-                            return -1;
-                        }
-                        s->dsp.idct_put(ptr, linesize[c], s->block);
+                    if (!s->progressive) {
+                        if (copy_mb)
+                            mjpeg_copy_block(ptr, reference_data[c] + block_offset,
+                                             linesize[c], s->avctx->lowres);
+                        else {
+                            s->dsp.clear_block(s->block);
+                            if (decode_block(s, s->block, i,
+                                             s->dc_index[i], s->ac_index[i],
+                                             s->quant_matrixes[s->quant_index[c]]) < 0) {
+                                av_log(s->avctx, AV_LOG_ERROR,
+                                       "error y=%d x=%d\n", mb_y, mb_x);
+                                return -1;
+                            }
+                            s->dsp.idct_put(ptr, linesize[c], s->block);
                         }
                     } else {
-                        int block_idx = s->block_stride[c] * (v * mb_y + y) + (h * mb_x + x);
+                        int block_idx  = s->block_stride[c] * (v * mb_y + y) +
+                                         (h * mb_x + x);
                         DCTELEM *block = s->blocks[c][block_idx];
-                        if(Ah)
-                            block[0] += get_bits1(&s->gb) * s->quant_matrixes[ s->quant_index[c] ][0] << Al;
-                        else if(decode_dc_progressive(s, block, i, s->dc_index[i], s->quant_matrixes[ s->quant_index[c] ], Al) < 0) {
-                            av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
+                        if (Ah)
+                            block[0] += get_bits1(&s->gb) *
+                                        s->quant_matrixes[s->quant_index[c]][0] << Al;
+                        else if (decode_dc_progressive(s, block, i, s->dc_index[i],
+                                                       s->quant_matrixes[s->quant_index[c]],
+                                                       Al) < 0) {
+                            av_log(s->avctx, AV_LOG_ERROR,
+                                   "error y=%d x=%d\n", mb_y, mb_x);
                             return -1;
                         }
                     }
-//                    av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n", mb_y, mb_x);
-//av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d \n", mb_x, mb_y, x, y, c, s->bottom_field, (v * mb_y + y) * 8, (h * mb_x + x) * 8);
+                    // av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n",
+                    //        mb_y, mb_x);
+                    // av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d \n",
+                    //        mb_x, mb_y, x, y, c, s->bottom_field,
+                    //        (v * mb_y + y) * 8, (h * mb_x + x) * 8);
                     if (++x == h) {
                         x = 0;
                         y++;
@@ -893,9 +934,8 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i
                     if ((get_bits(&s->gb, 8) & 0xF8) == 0xD0) {
                         for (i = 0; i < nb_components; i++) /* reset dc */
                             s->last_dc[i] = 1024;
-                    } else {
+                    } else
                         skip_bits_long(&s->gb, pos - get_bits_count(&s->gb));
-                    }
                 }
             }
         }
@@ -903,62 +943,66 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i
     return 0;
 }
 
-static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, int se, int Ah, int Al,
-                                            const uint8_t *mb_bitmask, const AVFrame *reference){
+static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
+                                            int se, int Ah, int Al,
+                                            const uint8_t *mb_bitmask,
+                                            const AVFrame *reference)
+{
     int mb_x, mb_y;
     int EOBRUN = 0;
     int c = s->comp_index[0];
-    uint8_tdata = s->picture_ptr->data[c];
+    uint8_t *data = s->picture_ptr->data[c];
     const uint8_t *reference_data = reference ? reference->data[c] : NULL;
-    int linesize = s->linesize[c];
+    int linesize  = s->linesize[c];
     int last_scan = 0;
-    int16_t *quant_matrix = s->quant_matrixes[ s->quant_index[c] ];
+    int16_t *quant_matrix = s->quant_matrixes[s->quant_index[c]];
     GetBitContext mb_bitmask_gb;
 
-    if (mb_bitmask) {
-        init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width*s->mb_height);
-    }
+    if (mb_bitmask)
+        init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
 
-    if(!Al) {
-        s->coefs_finished[c] |= (1LL<<(se+1))-(1LL<<ss);
+    if (!Al) {
+        s->coefs_finished[c] |= (1LL << (se + 1)) - (1LL << ss);
         last_scan = !~s->coefs_finished[c];
     }
 
-    if(s->interlaced && s->bottom_field) {
-        int offset = linesize >> 1;
-        data += offset;
+    if (s->interlaced && s->bottom_field) {
+        int offset      = linesize >> 1;
+        data           += offset;
         reference_data += offset;
     }
 
-    for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
-        int block_offset = (mb_y*linesize*8 >> s->avctx->lowres);
-        uint8_t *ptr = data + block_offset;
-        int block_idx = mb_y * s->block_stride[c];
+    for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+        int block_offset = (mb_y * linesize * 8 >> s->avctx->lowres);
+        uint8_t *ptr     = data + block_offset;
+        int block_idx    = mb_y * s->block_stride[c];
         DCTELEM (*block)[64] = &s->blocks[c][block_idx];
-        uint8_t *last_nnz = &s->last_nnz[c][block_idx];
-        for(mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) {
+        uint8_t *last_nnz    = &s->last_nnz[c][block_idx];
+        for (mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) {
             const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb);
 
             if (!copy_mb) {
-            int ret;
-            if(Ah)
-                ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0],
-                                              quant_matrix, ss, se, Al, &EOBRUN);
-            else
-                ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0],
-                                               quant_matrix, ss, se, Al, &EOBRUN);
-            if(ret < 0) {
-                av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
-                return -1;
-            }
+                int ret;
+                if (Ah)
+                    ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0],
+                                                  quant_matrix, ss, se, Al, &EOBRUN);
+                else
+                    ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0],
+                                                   quant_matrix, ss, se, Al, &EOBRUN);
+                if (ret < 0) {
+                    av_log(s->avctx, AV_LOG_ERROR,
+                           "error y=%d x=%d\n", mb_y, mb_x);
+                    return -1;
+                }
             }
 
-            if(last_scan) {
+            if (last_scan) {
                 if (copy_mb) {
-                    mjpeg_copy_block(ptr, reference_data + block_offset, linesize, s->avctx->lowres);
+                    mjpeg_copy_block(ptr, reference_data + block_offset,
+                                     linesize, s->avctx->lowres);
                 } else {
-                s->dsp.idct_put(ptr, linesize, *block);
-                ptr += 8 >> s->avctx->lowres;
+                    s->dsp.idct_put(ptr, linesize, *block);
+                    ptr += 8 >> s->avctx->lowres;
                 }
             }
         }
@@ -966,36 +1010,36 @@ static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, int s
     return 0;
 }
 
-int ff_mjpeg_decode_sos(MJpegDecodeContext *s,
-                        const uint8_t *mb_bitmask, const AVFrame *reference)
+int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask,
+                        const AVFrame *reference)
 {
     int len, nb_components, i, h, v, predictor, point_transform;
     int index, id;
-    const int block_size= s->lossless ? 1 : 8;
+    const int block_size = s->lossless ? 1 : 8;
     int ilv, prev_shift;
 
     /* XXX: verify len field validity */
     len = get_bits(&s->gb, 16);
     nb_components = get_bits(&s->gb, 8);
-    if (nb_components == 0 || nb_components > MAX_COMPONENTS){
-        av_log(s->avctx, AV_LOG_ERROR, "decode_sos: nb_components (%d) unsupported\n", nb_components);
+    if (nb_components == 0 || nb_components > MAX_COMPONENTS) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "decode_sos: nb_components (%d) unsupported\n", nb_components);
         return -1;
     }
-    if (len != 6+2*nb_components)
-    {
+    if (len != 6 + 2 * nb_components) {
         av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len);
         return -1;
     }
-    for(i=0;i<nb_components;i++) {
+    for (i = 0; i < nb_components; i++) {
         id = get_bits(&s->gb, 8) - 1;
         av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id);
         /* find component index */
-        for(index=0;index<s->nb_components;index++)
+        for (index = 0; index < s->nb_components; index++)
             if (id == s->component_id[index])
                 break;
-        if (index == s->nb_components)
-        {
-            av_log(s->avctx, AV_LOG_ERROR, "decode_sos: index(%d) out of components\n", index);
+        if (index == s->nb_components) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "decode_sos: index(%d) out of components\n", index);
             return -1;
         }
         /* Metasoft MJPEG codec has Cb and Cr swapped */
@@ -1006,8 +1050,8 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s,
         s->comp_index[i] = index;
 
         s->nb_blocks[i] = s->h_count[index] * s->v_count[index];
-        s->h_scount[i] = s->h_count[index];
-        s->v_scount[i] = s->v_count[index];
+        s->h_scount[i]  = s->h_count[index];
+        s->v_scount[i]  = s->v_count[index];
 
         s->dc_index[i] = get_bits(&s->gb, 4);
         s->ac_index[i] = get_bits(&s->gb, 4);
@@ -1015,34 +1059,36 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s,
         if (s->dc_index[i] <  0 || s->ac_index[i] < 0 ||
             s->dc_index[i] >= 4 || s->ac_index[i] >= 4)
             goto out_of_range;
-        if (!s->vlcs[0][s->dc_index[i]].table || !s->vlcs[1][s->ac_index[i]].table)
+        if (!s->vlcs[0][s->dc_index[i]].table ||
+            !s->vlcs[1][s->ac_index[i]].table)
             goto out_of_range;
     }
 
-    predictor= get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
-    ilv= get_bits(&s->gb, 8);    /* JPEG Se / JPEG-LS ILV */
-    prev_shift = get_bits(&s->gb, 4); /* Ah */
-    point_transform= get_bits(&s->gb, 4); /* Al */
+    predictor = get_bits(&s->gb, 8);       /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
+    ilv = get_bits(&s->gb, 8);             /* JPEG Se / JPEG-LS ILV */
+    prev_shift      = get_bits(&s->gb, 4); /* Ah */
+    point_transform = get_bits(&s->gb, 4); /* Al */
 
-    for(i=0;i<nb_components;i++)
+    for (i = 0; i < nb_components; i++)
         s->last_dc[i] = 1024;
 
     if (nb_components > 1) {
         /* interleaved stream */
         s->mb_width  = (s->width  + s->h_max * block_size - 1) / (s->h_max * block_size);
         s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size);
-    } else if(!s->ls) { /* skip this for JPEG-LS */
+    } else if (!s->ls) { /* skip this for JPEG-LS */
         h = s->h_max / s->h_scount[0];
         v = s->v_max / s->v_scount[0];
-        s->mb_width  = (s->width  + h * block_size - 1) / (h * block_size);
-        s->mb_height = (s->height + v * block_size - 1) / (v * block_size);
+        s->mb_width     = (s->width  + h * block_size - 1) / (h * block_size);
+        s->mb_height    = (s->height + v * block_size - 1) / (v * block_size);
         s->nb_blocks[0] = 1;
-        s->h_scount[0] = 1;
-        s->v_scount[0] = 1;
+        s->h_scount[0]  = 1;
+        s->v_scount[0]  = 1;
     }
 
-    if(s->avctx->debug & FF_DEBUG_PICT_INFO)
-        av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d %s\n", s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "",
+    if (s->avctx->debug & FF_DEBUG_PICT_INFO)
+        av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d %s\n",
+               s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "",
                predictor, point_transform, ilv, s->bits,
                s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : ""));
 
@@ -1051,30 +1097,31 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s,
     for (i = s->mjpb_skiptosod; i > 0; i--)
         skip_bits(&s->gb, 8);
 
-    if(s->lossless){
-        if(CONFIG_JPEGLS_DECODER && s->ls){
-//            for(){
+    if (s->lossless) {
+        if (CONFIG_JPEGLS_DECODER && s->ls) {
+//            for () {
 //            reset_ls_coding_parameters(s, 0);
 
-            if(ff_jpegls_decode_picture(s, predictor, point_transform, ilv) < 0)
+            if (ff_jpegls_decode_picture(s, predictor, point_transform, ilv) < 0)
                 return -1;
-        }else{
-            if(s->rgb){
-                if(ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0)
+        } else {
+            if (s->rgb) {
+                if (ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0)
                     return -1;
-            }else{
-                if(ljpeg_decode_yuv_scan(s, predictor, point_transform) < 0)
+            } else {
+                if (ljpeg_decode_yuv_scan(s, predictor, point_transform) < 0)
                     return -1;
             }
         }
-    }else{
-        if(s->progressive && predictor) {
-            if(mjpeg_decode_scan_progressive_ac(s, predictor, ilv, prev_shift, point_transform,
-                                                mb_bitmask, reference) < 0)
+    } else {
+        if (s->progressive && predictor) {
+            if (mjpeg_decode_scan_progressive_ac(s, predictor, ilv, prev_shift,
+                                                 point_transform,
+                                                 mb_bitmask, reference) < 0)
                 return -1;
         } else {
-            if(mjpeg_decode_scan(s, nb_components, prev_shift, point_transform,
-                                 mb_bitmask, reference) < 0)
+            if (mjpeg_decode_scan(s, nb_components, prev_shift, point_transform,
+                                  mb_bitmask, reference) < 0)
                 return -1;
         }
     }
@@ -1090,8 +1137,9 @@ static int mjpeg_decode_dri(MJpegDecodeContext *s)
     if (get_bits(&s->gb, 16) != 4)
         return -1;
     s->restart_interval = get_bits(&s->gb, 16);
-    s->restart_count = 0;
-    av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n", s->restart_interval);
+    s->restart_count    = 0;
+    av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n",
+           s->restart_interval);
 
     return 0;
 }
@@ -1103,22 +1151,20 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
     len = get_bits(&s->gb, 16);
     if (len < 5)
         return -1;
-    if(8*len + get_bits_count(&s->gb) > s->gb.size_in_bits)
+    if (8 * len + get_bits_count(&s->gb) > s->gb.size_in_bits)
         return -1;
 
-    id = get_bits_long(&s->gb, 32);
-    id = av_be2ne32(id);
+    id   = get_bits_long(&s->gb, 32);
+    id   = av_be2ne32(id);
     len -= 6;
 
-    if(s->avctx->debug & FF_DEBUG_STARTCODE){
+    if (s->avctx->debug & FF_DEBUG_STARTCODE)
         av_log(s->avctx, AV_LOG_DEBUG, "APPx %8X\n", id);
-    }
 
     /* Buggy AVID, it puts EOI only at every 10th frame. */
     /* Also, this fourcc is used by non-avid files too, it holds some
        information, but it's always present in AVID-created files. */
-    if (id == AV_RL32("AVI1"))
-    {
+    if (id == AV_RL32("AVI1")) {
         /* structure:
             4bytes      AVI1
             1bytes      polarity
@@ -1126,12 +1172,14 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
             4bytes      field_size
             4bytes      field_size_less_padding
         */
-            s->buggy_avid = 1;
-//        if (s->first_picture)
-//            printf("mjpeg: workarounding buggy AVID\n");
+        s->buggy_avid = 1;
+//      if (s->first_picture)
+//          printf("mjpeg: workarounding buggy AVID\n");
         i = get_bits(&s->gb, 8);
-        if     (i==2) s->bottom_field= 1;
-        else if(i==1) s->bottom_field= 0;
+        if (i == 2)
+            s->bottom_field = 1;
+        else if (i == 1)
+            s->bottom_field = 0;
 #if 0
         skip_bits(&s->gb, 8);
         skip_bits(&s->gb, 32);
@@ -1145,63 +1193,61 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
 
 //    len -= 2;
 
-    if (id == AV_RL32("JFIF"))
-    {
+    if (id == AV_RL32("JFIF")) {
         int t_w, t_h, v1, v2;
         skip_bits(&s->gb, 8); /* the trailing zero-byte */
-        v1= get_bits(&s->gb, 8);
-        v2= get_bits(&s->gb, 8);
+        v1 = get_bits(&s->gb, 8);
+        v2 = get_bits(&s->gb, 8);
         skip_bits(&s->gb, 8);
 
-        s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 16);
-        s->avctx->sample_aspect_ratio.den= get_bits(&s->gb, 16);
+        s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 16);
+        s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 16);
 
         if (s->avctx->debug & FF_DEBUG_PICT_INFO)
-            av_log(s->avctx, AV_LOG_INFO, "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n",
-                v1, v2,
-                s->avctx->sample_aspect_ratio.num,
-                s->avctx->sample_aspect_ratio.den
-            );
+            av_log(s->avctx, AV_LOG_INFO,
+                   "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n",
+                   v1, v2,
+                   s->avctx->sample_aspect_ratio.num,
+                   s->avctx->sample_aspect_ratio.den);
 
         t_w = get_bits(&s->gb, 8);
         t_h = get_bits(&s->gb, 8);
-        if (t_w && t_h)
-        {
+        if (t_w && t_h) {
             /* skip thumbnail */
-            if (len-10-(t_w*t_h*3) > 0)
-                len -= t_w*t_h*3;
+            if (len -10 - (t_w * t_h * 3) > 0)
+                len -= t_w * t_h * 3;
         }
         len -= 10;
         goto out;
     }
 
-    if (id == AV_RL32("Adob") && (get_bits(&s->gb, 8) == 'e'))
-    {
+    if (id == AV_RL32("Adob") && (get_bits(&s->gb, 8) == 'e')) {
         if (s->avctx->debug & FF_DEBUG_PICT_INFO)
             av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found\n");
         skip_bits(&s->gb, 16); /* version */
         skip_bits(&s->gb, 16); /* flags0 */
         skip_bits(&s->gb, 16); /* flags1 */
-        skip_bits(&s->gb, 8);  /* transform */
+        skip_bits(&s->gb,  8); /* transform */
         len -= 7;
         goto out;
     }
 
-    if (id == AV_RL32("LJIF")){
+    if (id == AV_RL32("LJIF")) {
         if (s->avctx->debug & FF_DEBUG_PICT_INFO)
-            av_log(s->avctx, AV_LOG_INFO, "Pegasus lossless jpeg header found\n");
+            av_log(s->avctx, AV_LOG_INFO,
+                   "Pegasus lossless jpeg header found\n");
         skip_bits(&s->gb, 16); /* version ? */
         skip_bits(&s->gb, 16); /* unknwon always 0? */
         skip_bits(&s->gb, 16); /* unknwon always 0? */
         skip_bits(&s->gb, 16); /* unknwon always 0? */
-        switch( get_bits(&s->gb, 8)){
+        switch (get_bits(&s->gb, 8)) {
         case 1:
-            s->rgb= 1;
-            s->pegasus_rct=0;
+            s->rgb         = 1;
+            s->pegasus_rct = 0;
             break;
         case 2:
-            s->rgb= 1;
-            s->pegasus_rct=1;
+            s->rgb         = 1;
+            s->pegasus_rct = 1;
             break;
         default:
             av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace\n");
@@ -1211,13 +1257,12 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
     }
 
     /* Apple MJPEG-A */
-    if ((s->start_code == APP1) && (len > (0x28 - 8)))
-    {
-        id = get_bits_long(&s->gb, 32);
-        id = av_be2ne32(id);
+    if ((s->start_code == APP1) && (len > (0x28 - 8))) {
+        id   = get_bits_long(&s->gb, 32);
+        id   = av_be2ne32(id);
         len -= 4;
-        if (id == AV_RL32("mjpg")) /* Apple MJPEG-A */
-        {
+        /* Apple MJPEG-A */
+        if (id == AV_RL32("mjpg")) {
 #if 0
             skip_bits(&s->gb, 32); /* field size */
             skip_bits(&s->gb, 32); /* pad field size */
@@ -1236,8 +1281,9 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
 out:
     /* slow but needed for extreme adobe jpegs */
     if (len < 0)
-        av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error, decode_app parser read over the end\n");
-    while(--len > 0)
+        av_log(s->avctx, AV_LOG_ERROR,
+               "mjpeg: error, decode_app parser read over the end\n");
+    while (--len > 0)
         skip_bits(&s->gb, 8);
 
     return 0;
@@ -1246,34 +1292,31 @@ out:
 static int mjpeg_decode_com(MJpegDecodeContext *s)
 {
     int len = get_bits(&s->gb, 16);
-    if (len >= 2 && 8*len - 16 + get_bits_count(&s->gb) <= s->gb.size_in_bits) {
+    if (len >= 2 &&
+        8 * len - 16 + get_bits_count(&s->gb) <= s->gb.size_in_bits) {
         char *cbuf = av_malloc(len - 1);
         if (cbuf) {
             int i;
             for (i = 0; i < len - 2; i++)
                 cbuf[i] = get_bits(&s->gb, 8);
-            if (i > 0 && cbuf[i-1] == '\n')
-                cbuf[i-1] = 0;
+            if (i > 0 && cbuf[i - 1] == '\n')
+                cbuf[i - 1] = 0;
             else
                 cbuf[i] = 0;
 
-            if(s->avctx->debug & FF_DEBUG_PICT_INFO)
+            if (s->avctx->debug & FF_DEBUG_PICT_INFO)
                 av_log(s->avctx, AV_LOG_INFO, "mjpeg comment: '%s'\n", cbuf);
 
             /* buggy avid, it puts EOI only at every 10th frame */
-            if (!strcmp(cbuf, "AVID"))
-            {
+            if (!strcmp(cbuf, "AVID")) {
                 s->buggy_avid = 1;
-                //        if (s->first_picture)
-                //            printf("mjpeg: workarounding buggy AVID\n");
-            }
-            else if(!strcmp(cbuf, "CS=ITU601")){
-                s->cs_itu601= 1;
-            }
-            else if((len > 20 && !strncmp(cbuf, "Intel(R) JPEG Library", 21)) ||
-                    (len > 19 && !strncmp(cbuf, "Metasoft MJPEG Codec", 20))){
+                // if (s->first_picture)
+                // printf("mjpeg: workarounding buggy AVID\n");
+            } else if (!strcmp(cbuf, "CS=ITU601"))
+                s->cs_itu601 = 1;
+            else if ((len > 20 && !strncmp(cbuf, "Intel(R) JPEG Library", 21)) ||
+                     (len > 19 && !strncmp(cbuf, "Metasoft MJPEG Codec", 20)))
                 s->flipped = 1;
-            }
 
             av_free(cbuf);
         }
@@ -1290,12 +1333,12 @@ static int find_marker(const uint8_t **pbuf_ptr, const uint8_t *buf_end)
     unsigned int v, v2;
     int val;
 #ifdef DEBUG
-    int skipped=0;
+    int skipped = 0;
 #endif
 
     buf_ptr = *pbuf_ptr;
     while (buf_ptr < buf_end) {
-        v = *buf_ptr++;
+        v  = *buf_ptr++;
         v2 = *buf_ptr;
         if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) {
             val = *buf_ptr++;
@@ -1314,105 +1357,97 @@ found:
 
 int ff_mjpeg_find_marker(MJpegDecodeContext *s,
                          const uint8_t **buf_ptr, const uint8_t *buf_end,
-                         const uint8_t **unescaped_buf_ptr, int *unescaped_buf_size)
+                         const uint8_t **unescaped_buf_ptr,
+                         int *unescaped_buf_size)
 {
     int start_code;
     start_code = find_marker(buf_ptr, buf_end);
 
-                if ((buf_end - *buf_ptr) > s->buffer_size)
-                {
-                    av_free(s->buffer);
-                    s->buffer_size = buf_end - *buf_ptr;
-                    s->buffer = av_malloc(s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE);
-                    av_log(s->avctx, AV_LOG_DEBUG, "buffer too small, expanding to %d bytes\n",
-                        s->buffer_size);
-                }
-
-                /* unescape buffer of SOS, use special treatment for JPEG-LS */
-                if (start_code == SOS && !s->ls)
-                {
-                    const uint8_t *src = *buf_ptr;
-                    uint8_t *dst = s->buffer;
+    if ((buf_end - *buf_ptr) > s->buffer_size) {
+        av_free(s->buffer);
+        s->buffer_size = buf_end - *buf_ptr;
+        s->buffer      = av_malloc(s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE);
+        av_log(s->avctx, AV_LOG_DEBUG,
+               "buffer too small, expanding to %d bytes\n", s->buffer_size);
+    }
 
-                    while (src<buf_end)
-                    {
-                        uint8_t x = *(src++);
+    /* unescape buffer of SOS, use special treatment for JPEG-LS */
+    if (start_code == SOS && !s->ls) {
+        const uint8_t *src = *buf_ptr;
+        uint8_t *dst = s->buffer;
 
-                        *(dst++) = x;
-                        if (s->avctx->codec_id != CODEC_ID_THP)
-                        {
-                            if (x == 0xff) {
-                                while (src < buf_end && x == 0xff)
-                                    x = *(src++);
-
-                                if (x >= 0xd0 && x <= 0xd7)
-                                    *(dst++) = x;
-                                else if (x)
-                                    break;
-                            }
-                        }
-                    }
-                    *unescaped_buf_ptr  = s->buffer;
-                    *unescaped_buf_size = dst - s->buffer;
+        while (src < buf_end) {
+            uint8_t x = *(src++);
 
-                    av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %td bytes\n",
-                           (buf_end - *buf_ptr) - (dst - s->buffer));
-                }
-                else if(start_code == SOS && s->ls){
-                    const uint8_t *src = *buf_ptr;
-                    uint8_t *dst = s->buffer;
-                    int bit_count = 0;
-                    int t = 0, b = 0;
-                    PutBitContext pb;
-
-                    s->cur_scan++;
-
-                    /* find marker */
-                    while (src + t < buf_end){
-                        uint8_t x = src[t++];
-                        if (x == 0xff){
-                            while((src + t < buf_end) && x == 0xff)
-                                x = src[t++];
-                            if (x & 0x80) {
-                                t -= 2;
-                                break;
-                            }
-                        }
-                    }
-                    bit_count = t * 8;
-
-                    init_put_bits(&pb, dst, t);
-
-                    /* unescape bitstream */
-                    while(b < t){
-                        uint8_t x = src[b++];
-                        put_bits(&pb, 8, x);
-                        if(x == 0xFF){
-                            x = src[b++];
-                            put_bits(&pb, 7, x);
-                            bit_count--;
-                        }
-                    }
-                    flush_put_bits(&pb);
+            *(dst++) = x;
+            if (s->avctx->codec_id != CODEC_ID_THP) {
+                if (x == 0xff) {
+                    while (src < buf_end && x == 0xff)
+                        x = *(src++);
 
-                    *unescaped_buf_ptr  = dst;
-                    *unescaped_buf_size = (bit_count + 7) >> 3;
+                    if (x >= 0xd0 && x <= 0xd7)
+                        *(dst++) = x;
+                    else if (x)
+                        break;
                 }
-                else
-                {
-                    *unescaped_buf_ptr  = *buf_ptr;
-                    *unescaped_buf_size = buf_end - *buf_ptr;
+            }
+        }
+        *unescaped_buf_ptr  = s->buffer;
+        *unescaped_buf_size = dst - s->buffer;
+
+        av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %td bytes\n",
+               (buf_end - *buf_ptr) - (dst - s->buffer));
+    } else if (start_code == SOS && s->ls) {
+        const uint8_t *src = *buf_ptr;
+        uint8_t *dst  = s->buffer;
+        int bit_count = 0;
+        int t = 0, b = 0;
+        PutBitContext pb;
+
+        s->cur_scan++;
+
+        /* find marker */
+        while (src + t < buf_end) {
+            uint8_t x = src[t++];
+            if (x == 0xff) {
+                while ((src + t < buf_end) && x == 0xff)
+                    x = src[t++];
+                if (x & 0x80) {
+                    t -= 2;
+                    break;
                 }
+            }
+        }
+        bit_count = t * 8;
+        init_put_bits(&pb, dst, t);
+
+        /* unescape bitstream */
+        while (b < t) {
+            uint8_t x = src[b++];
+            put_bits(&pb, 8, x);
+            if (x == 0xFF) {
+                x = src[b++];
+                put_bits(&pb, 7, x);
+                bit_count--;
+            }
+        }
+        flush_put_bits(&pb);
+
+        *unescaped_buf_ptr  = dst;
+        *unescaped_buf_size = (bit_count + 7) >> 3;
+    } else {
+        *unescaped_buf_ptr  = *buf_ptr;
+        *unescaped_buf_size = buf_end - *buf_ptr;
+    }
 
     return start_code;
 }
 
-int ff_mjpeg_decode_frame(AVCodecContext *avctx,
-                              void *data, int *data_size,
-                              AVPacket *avpkt)
+int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+                          AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
+    int buf_size       = avpkt->size;
     MJpegDecodeContext *s = avctx->priv_data;
     const uint8_t *buf_end, *buf_ptr;
     const uint8_t *unescaped_buf_ptr;
@@ -1426,149 +1461,155 @@ int ff_mjpeg_decode_frame(AVCodecContext *avctx,
     while (buf_ptr < buf_end) {
         /* find start next marker */
         start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end,
-                                          &unescaped_buf_ptr, &unescaped_buf_size);
-        {
-            /* EOF */
-            if (start_code < 0) {
-                goto the_end;
-            } else {
-                av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n", start_code, buf_end - buf_ptr);
-
-                init_get_bits(&s->gb, unescaped_buf_ptr, unescaped_buf_size*8);
-
-                s->start_code = start_code;
-                if(s->avctx->debug & FF_DEBUG_STARTCODE){
-                    av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
-                }
-
-                /* process markers */
-                if (start_code >= 0xd0 && start_code <= 0xd7) {
-                    av_log(avctx, AV_LOG_DEBUG, "restart marker: %d\n", start_code&0x0f);
-                    /* APP fields */
-                } else if (start_code >= APP0 && start_code <= APP15) {
-                    mjpeg_decode_app(s);
-                    /* Comment */
-                } else if (start_code == COM){
-                    mjpeg_decode_com(s);
+                                          &unescaped_buf_ptr,
+                                          &unescaped_buf_size);
+        /* EOF */
+        if (start_code < 0) {
+            goto the_end;
+        } else {
+            av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n",
+                   start_code, buf_end - buf_ptr);
+
+            init_get_bits(&s->gb, unescaped_buf_ptr, unescaped_buf_size * 8);
+
+            s->start_code = start_code;
+            if (s->avctx->debug & FF_DEBUG_STARTCODE)
+                av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
+
+            /* process markers */
+            if (start_code >= 0xd0 && start_code <= 0xd7)
+                av_log(avctx, AV_LOG_DEBUG,
+                       "restart marker: %d\n", start_code & 0x0f);
+                /* APP fields */
+            else if (start_code >= APP0 && start_code <= APP15)
+                mjpeg_decode_app(s);
+                /* Comment */
+            else if (start_code == COM)
+                mjpeg_decode_com(s);
+
+            switch (start_code) {
+            case SOI:
+                s->restart_interval = 0;
+                s->restart_count    = 0;
+                /* nothing to do on SOI */
+                break;
+            case DQT:
+                ff_mjpeg_decode_dqt(s);
+                break;
+            case DHT:
+                if (ff_mjpeg_decode_dht(s) < 0) {
+                    av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
+                    return -1;
                 }
-
-                switch(start_code) {
-                case SOI:
-                    s->restart_interval = 0;
-
-                    s->restart_count = 0;
-                    /* nothing to do on SOI */
-                    break;
-                case DQT:
-                    ff_mjpeg_decode_dqt(s);
-                    break;
-                case DHT:
-                    if(ff_mjpeg_decode_dht(s) < 0){
-                        av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
-                        return -1;
-                    }
-                    break;
-                case SOF0:
-                case SOF1:
-                    s->lossless=0;
-                    s->ls=0;
-                    s->progressive=0;
-                    if (ff_mjpeg_decode_sof(s) < 0)
-                        return -1;
-                    break;
-                case SOF2:
-                    s->lossless=0;
-                    s->ls=0;
-                    s->progressive=1;
-                    if (ff_mjpeg_decode_sof(s) < 0)
-                        return -1;
-                    break;
-                case SOF3:
-                    s->lossless=1;
-                    s->ls=0;
-                    s->progressive=0;
-                    if (ff_mjpeg_decode_sof(s) < 0)
-                        return -1;
-                    break;
-                case SOF48:
-                    s->lossless=1;
-                    s->ls=1;
-                    s->progressive=0;
-                    if (ff_mjpeg_decode_sof(s) < 0)
-                        return -1;
-                    break;
-                case LSE:
-                    if (!CONFIG_JPEGLS_DECODER || ff_jpegls_decode_lse(s) < 0)
-                        return -1;
+                break;
+            case SOF0:
+            case SOF1:
+                s->lossless    = 0;
+                s->ls          = 0;
+                s->progressive = 0;
+                if (ff_mjpeg_decode_sof(s) < 0)
+                    return -1;
+                break;
+            case SOF2:
+                s->lossless    = 0;
+                s->ls          = 0;
+                s->progressive = 1;
+                if (ff_mjpeg_decode_sof(s) < 0)
+                    return -1;
+                break;
+            case SOF3:
+                s->lossless    = 1;
+                s->ls          = 0;
+                s->progressive = 0;
+                if (ff_mjpeg_decode_sof(s) < 0)
+                    return -1;
+                break;
+            case SOF48:
+                s->lossless    = 1;
+                s->ls          = 1;
+                s->progressive = 0;
+                if (ff_mjpeg_decode_sof(s) < 0)
+                    return -1;
+                break;
+            case LSE:
+                if (!CONFIG_JPEGLS_DECODER || ff_jpegls_decode_lse(s) < 0)
+                    return -1;
+                break;
+            case EOI:
+                s->cur_scan = 0;
+                if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
                     break;
-                case EOI:
-                    s->cur_scan = 0;
-                    if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
-                        break;
 eoi_parser:
-                    if (!s->got_picture) {
-                        av_log(avctx, AV_LOG_WARNING, "Found EOI before any SOF, ignoring\n");
-                        break;
+                if (!s->got_picture) {
+                    av_log(avctx, AV_LOG_WARNING,
+                           "Found EOI before any SOF, ignoring\n");
+                    break;
                     }
-                    if (s->interlaced) {
-                        s->bottom_field ^= 1;
-                        /* if not bottom field, do not output image yet */
-                        if (s->bottom_field == !s->interlace_polarity)
-                            goto not_the_end;
+                if (s->interlaced) {
+                    s->bottom_field ^= 1;
+                    /* if not bottom field, do not output image yet */
+                    if (s->bottom_field == !s->interlace_polarity)
+                        goto not_the_end;
                     }
-                    *picture = *s->picture_ptr;
+                    *picture   = *s->picture_ptr;
                     *data_size = sizeof(AVFrame);
 
-                    if(!s->lossless){
-                        picture->quality= FFMAX3(s->qscale[0], s->qscale[1], s->qscale[2]);
-                        picture->qstride= 0;
-                        picture->qscale_table= s->qscale_table;
-                        memset(picture->qscale_table, picture->quality, (s->width+15)/16);
-                        if(avctx->debug & FF_DEBUG_QP)
-                            av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", picture->quality);
-                        picture->quality*= FF_QP2LAMBDA;
+                    if (!s->lossless) {
+                        picture->quality      = FFMAX3(s->qscale[0],
+                                                       s->qscale[1],
+                                                       s->qscale[2]);
+                        picture->qstride      = 0;
+                        picture->qscale_table = s->qscale_table;
+                        memset(picture->qscale_table, picture->quality,
+                               (s->width + 15) / 16);
+                        if (avctx->debug & FF_DEBUG_QP)
+                            av_log(avctx, AV_LOG_DEBUG,
+                                   "QP: %d\n", picture->quality);
+                        picture->quality *= FF_QP2LAMBDA;
                     }
 
-                    goto the_end;
-                case SOS:
-                    if (!s->got_picture) {
-                        av_log(avctx, AV_LOG_WARNING, "Can not process SOS before SOF, skipping\n");
-                        break;
-                    }
-                    if (ff_mjpeg_decode_sos(s, NULL, NULL) < 0 &&
-                        (avctx->err_recognition & AV_EF_EXPLODE))
-                      return AVERROR_INVALIDDATA;
-                    /* buggy avid puts EOI every 10-20th frame */
-                    /* if restart period is over process EOI */
-                    if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
-                        goto eoi_parser;
-                    break;
-                case DRI:
-                    mjpeg_decode_dri(s);
-                    break;
-                case SOF5:
-                case SOF6:
-                case SOF7:
-                case SOF9:
-                case SOF10:
-                case SOF11:
-                case SOF13:
-                case SOF14:
-                case SOF15:
-                case JPG:
-                    av_log(avctx, AV_LOG_ERROR, "mjpeg: unsupported coding type (%x)\n", start_code);
+                goto the_end;
+            case SOS:
+                if (!s->got_picture) {
+                    av_log(avctx, AV_LOG_WARNING,
+                           "Can not process SOS before SOF, skipping\n");
                     break;
-//                default:
-//                    printf("mjpeg: unsupported marker (%x)\n", start_code);
-//                    break;
-                }
+                    }
+                if (ff_mjpeg_decode_sos(s, NULL, NULL) < 0 &&
+                    (avctx->err_recognition & AV_EF_EXPLODE))
+                    return AVERROR_INVALIDDATA;
+                /* buggy avid puts EOI every 10-20th frame */
+                /* if restart period is over process EOI */
+                if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
+                    goto eoi_parser;
+                break;
+            case DRI:
+                mjpeg_decode_dri(s);
+                break;
+            case SOF5:
+            case SOF6:
+            case SOF7:
+            case SOF9:
+            case SOF10:
+            case SOF11:
+            case SOF13:
+            case SOF14:
+            case SOF15:
+            case JPG:
+                av_log(avctx, AV_LOG_ERROR,
+                       "mjpeg: unsupported coding type (%x)\n", start_code);
+                break;
+//              default:
+//              printf("mjpeg: unsupported marker (%x)\n", start_code);
+//              break;
+            }
 
 not_the_end:
-                /* eof process start code */
-                buf_ptr += (get_bits_count(&s->gb)+7)/8;
-                av_log(avctx, AV_LOG_DEBUG, "marker parser used %d bytes (%d bits)\n",
-                       (get_bits_count(&s->gb)+7)/8, get_bits_count(&s->gb));
-            }
+            /* eof process start code */
+            buf_ptr += (get_bits_count(&s->gb) + 7) / 8;
+            av_log(avctx, AV_LOG_DEBUG,
+                   "marker parser used %d bytes (%d bits)\n",
+                   (get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb));
         }
     }
     if (s->got_picture) {
@@ -1578,8 +1619,9 @@ not_the_end:
     av_log(avctx, AV_LOG_FATAL, "No JPEG data found in image\n");
     return -1;
 the_end:
-    av_log(avctx, AV_LOG_DEBUG, "mjpeg decode frame unused %td bytes\n", buf_end - buf_ptr);
-//    return buf_end - buf_ptr;
+    av_log(avctx, AV_LOG_DEBUG, "mjpeg decode frame unused %td bytes\n",
+           buf_end - buf_ptr);
+//  return buf_end - buf_ptr;
     return buf_ptr - buf;
 }
 
@@ -1594,13 +1636,13 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
     av_free(s->buffer);
     av_free(s->qscale_table);
     av_freep(&s->ljpeg_buffer);
-    s->ljpeg_buffer_size=0;
+    s->ljpeg_buffer_size = 0;
 
-    for(i=0;i<3;i++) {
-        for(j=0;j<4;j++)
+    for (i = 0; i < 3; i++) {
+        for (j = 0; j < 4; j++)
             free_vlc(&s->vlcs[i][j]);
     }
-    for(i=0; i<MAX_COMPONENTS; i++) {
+    for (i = 0; i < MAX_COMPONENTS; i++) {
         av_freep(&s->blocks[i]);
         av_freep(&s->last_nnz[i]);
     }
@@ -1610,7 +1652,8 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
 #define OFFSET(x) offsetof(MJpegDecodeContext, x)
 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
 static const AVOption options[] = {
-    { "extern_huff",        "Use external huffman table.",  OFFSET(extern_huff), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD },
+    { "extern_huff", "Use external huffman table.",
+      OFFSET(extern_huff), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD },
     { NULL },
 };
 
@@ -1630,8 +1673,8 @@ AVCodec ff_mjpeg_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = ff_mjpeg_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .max_lowres = 3,
-    .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
+    .max_lowres     = 3,
+    .long_name      = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
     .priv_class     = &mjpegdec_class,
 };
 
@@ -1644,6 +1687,6 @@ AVCodec ff_thp_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = ff_mjpeg_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .max_lowres = 3,
-    .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
+    .max_lowres     = 3,
+    .long_name      = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
 };