mpeg12enc: K&R formatting cosmetics
authorVittorio Giovara <vittorio.giovara@gmail.com>
Wed, 4 Sep 2013 15:17:30 +0000 (17:17 +0200)
committerDiego Biurrun <diego@biurrun.de>
Thu, 5 Sep 2013 19:50:24 +0000 (21:50 +0200)
Signed-off-by: Diego Biurrun <diego@biurrun.de>
libavcodec/mpeg12enc.c

index 7dc7935..2010d2a 100644 (file)
  * MPEG1/2 encoder
  */
 
+#include "libavutil/attributes.h"
+#include "libavutil/log.h"
+#include "libavutil/opt.h"
 #include "avcodec.h"
+#include "bytestream.h"
 #include "mathops.h"
-#include "mpegvideo.h"
-
 #include "mpeg12.h"
 #include "mpeg12data.h"
-#include "bytestream.h"
+#include "mpegvideo.h"
 
-#include "libavutil/attributes.h"
-#include "libavutil/log.h"
-#include "libavutil/opt.h"
 
-static const uint8_t inv_non_linear_qscale[13] = {
-    0, 2, 4, 6, 8,
-    9,10,11,12,13,14,15,16,
+static const uint8_t inv_non_linear_qscale[] = {
+    0, 2, 4, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16,
 };
 
-static const uint8_t svcd_scan_offset_placeholder[14] = {
-    0x10, 0x0E,
-    0x00, 0x80, 0x81,
-    0x00, 0x80, 0x81,
-    0xff, 0xff, 0xff,
-    0xff, 0xff, 0xff,
+static const uint8_t svcd_scan_offset_placeholder[] = {
+    0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80,
+    0x81, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 };
 
-static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
-static uint8_t fcode_tab[MAX_MV*2+1];
+static uint8_t mv_penalty[MAX_FCODE + 1][MAX_MV * 2 + 1];
+static uint8_t fcode_tab[MAX_MV * 2 + 1];
 
-static uint8_t  uni_mpeg1_ac_vlc_len [64*64*2];
-static uint8_t  uni_mpeg2_ac_vlc_len [64*64*2];
+static uint8_t uni_mpeg1_ac_vlc_len[64 * 64 * 2];
+static uint8_t uni_mpeg2_ac_vlc_len[64 * 64 * 2];
 
-/* simple include everything table for dc, first byte is bits number next 3 are code*/
+/* simple include everything table for dc, first byte is bits
+ * number next 3 are code */
 static uint32_t mpeg1_lum_dc_uni[512];
 static uint32_t mpeg1_chr_dc_uni[512];
 
 static uint8_t mpeg1_index_run[2][64];
-static int8_t mpeg1_max_level[2][64];
+static int8_t  mpeg1_max_level[2][64];
 
 static av_cold void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len)
 {
     int i;
 
-    for(i=0; i<128; i++){
-        int level= i-64;
+    for (i = 0; i < 128; i++) {
+        int level = i - 64;
         int run;
         if (!level)
             continue;
-        for(run=0; run<64; run++){
+        for (run = 0; run < 64; run++) {
             int len, code;
-
-            int alevel= FFABS(level);
+            int alevel = FFABS(level);
 
             if (alevel > rl->max_level[0][run])
-                code= 111; /*rl->n*/
+                code = 111;                         /* rl->n */
             else
-                code= rl->index_run[0][run] + alevel - 1;
+                code = rl->index_run[0][run] + alevel - 1;
 
-            if (code < 111 /* rl->n */) {
-                /* length of vlc and sign */
-                len=   rl->table_vlc[code][1]+1;
+            if (code < 111) {                       /* rl->n */
+                /* length of VLC and sign */
+                len = rl->table_vlc[code][1] + 1;
             } else {
-                len=  rl->table_vlc[111/*rl->n*/][1]+6;
+                len = rl->table_vlc[111][1] + 6;    /* rl->n */
 
-                if (alevel < 128) {
+                if (alevel < 128)
                     len += 8;
-                } else {
+                else
                     len += 16;
-                }
             }
 
-            uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len;
+            uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
         }
     }
 }
 
-
-static int find_frame_rate_index(MpegEncContext *s){
+static int find_frame_rate_index(MpegEncContext *s)
+{
     int i;
-    int64_t dmin= INT64_MAX;
+    int64_t dmin = INT64_MAX;
     int64_t d;
 
-    for(i=1;i<14;i++) {
-        int64_t n0 = 1001LL / ff_mpeg12_frame_rate_tab[i].den * ff_mpeg12_frame_rate_tab[i].num * s->avctx->time_base.num;
-        int64_t n1= 1001LL*s->avctx->time_base.den;
-        if(s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL && i>=9) break;
+    for (i = 1; i < 14; i++) {
+        int64_t n0 = 1001LL / ff_mpeg12_frame_rate_tab[i].den *
+                     ff_mpeg12_frame_rate_tab[i].num * s->avctx->time_base.num;
+        int64_t n1 = 1001LL * s->avctx->time_base.den;
+
+        if (s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL &&
+            i >= 9)
+            break;
 
         d = FFABS(n0 - n1);
-        if(d < dmin){
-            dmin=d;
-            s->frame_rate_index= i;
+        if (d < dmin) {
+            dmin                = d;
+            s->frame_rate_index = i;
         }
     }
-    if(dmin)
+
+    if (dmin)
         return -1;
     else
         return 0;
@@ -127,43 +126,54 @@ static av_cold int encode_init(AVCodecContext *avctx)
 {
     MpegEncContext *s = avctx->priv_data;
 
-    if(ff_MPV_encode_init(avctx) < 0)
+    if (ff_MPV_encode_init(avctx) < 0)
         return -1;
 
-    if(find_frame_rate_index(s) < 0){
-        if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
-            av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num);
+    if (find_frame_rate_index(s) < 0) {
+        if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+            av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n",
+                   avctx->time_base.den, avctx->time_base.num);
             return -1;
-        }else{
-            av_log(avctx, AV_LOG_INFO, "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n", avctx->time_base.den, avctx->time_base.num);
+        } else {
+            av_log(avctx, AV_LOG_INFO,
+                   "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n",
+                   avctx->time_base.den, avctx->time_base.num);
         }
     }
 
-    if(avctx->profile == FF_PROFILE_UNKNOWN){
-        if(avctx->level != FF_LEVEL_UNKNOWN){
+    if (avctx->profile == FF_PROFILE_UNKNOWN) {
+        if (avctx->level != FF_LEVEL_UNKNOWN) {
             av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
             return -1;
         }
-        avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0; /* Main or 4:2:2 */
+        /* Main or 4:2:2 */
+        avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0;
     }
 
-    if(avctx->level == FF_LEVEL_UNKNOWN){
-        if(avctx->profile == 0){ /* 4:2:2 */
-            if(avctx->width <= 720 && avctx->height <= 608) avctx->level = 5; /* Main */
-            else                                            avctx->level = 2; /* High */
-        }else{
-            if(avctx->profile != 1 && s->chroma_format != CHROMA_420){
-                av_log(avctx, AV_LOG_ERROR, "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
+    if (avctx->level == FF_LEVEL_UNKNOWN) {
+        if (avctx->profile == 0) {                  /* 4:2:2 */
+            if (avctx->width <= 720 && avctx->height <= 608)
+                avctx->level = 5;                   /* Main */
+            else
+                avctx->level = 2;                   /* High */
+        } else {
+            if (avctx->profile != 1 && s->chroma_format != CHROMA_420) {
+                av_log(avctx, AV_LOG_ERROR,
+                       "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
                 return -1;
             }
-            if(avctx->width <= 720 && avctx->height <= 576) avctx->level = 8; /* Main */
-            else if(avctx->width <= 1440)                   avctx->level = 6; /* High 1440 */
-            else                                            avctx->level = 4; /* High */
+            if (avctx->width <= 720 && avctx->height <= 576)
+                avctx->level = 8;                   /* Main */
+            else if (avctx->width <= 1440)
+                avctx->level = 6;                   /* High 1440 */
+            else
+                avctx->level = 4;                   /* High */
         }
     }
 
     if (s->drop_frame_timecode && s->frame_rate_index != 4) {
-        av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n");
+        av_log(avctx, AV_LOG_ERROR,
+               "Drop frame time code only allowed with 1001/30000 fps\n");
         return -1;
     }
 
@@ -173,131 +183,137 @@ static av_cold int encode_init(AVCodecContext *avctx)
 static void put_header(MpegEncContext *s, int header)
 {
     avpriv_align_put_bits(&s->pb);
-    put_bits(&s->pb, 16, header>>16);
+    put_bits(&s->pb, 16, header >> 16);
     put_sbits(&s->pb, 16, header);
 }
 
 /* put sequence header if needed */
 static void mpeg1_encode_sequence_header(MpegEncContext *s)
 {
-        unsigned int vbv_buffer_size;
-        unsigned int fps, v;
-        int i;
-        uint64_t time_code;
-        float best_aspect_error= 1E10;
-        float aspect_ratio= av_q2d(s->avctx->sample_aspect_ratio);
-        int constraint_parameter_flag;
+    unsigned int vbv_buffer_size, fps, v;
+    int i, constraint_parameter_flag;
+    uint64_t time_code;
+    float best_aspect_error = 1E10;
+    float aspect_ratio      = av_q2d(s->avctx->sample_aspect_ratio);
 
-        if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
+    if (aspect_ratio == 0.0)
+        aspect_ratio = 1.0;             // pixel aspect 1.1 (VGA)
 
-        if (s->current_picture.f.key_frame) {
-            AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
+    if (s->current_picture.f.key_frame) {
+        AVRational framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
 
-            /* mpeg1 header repeated every gop */
-            put_header(s, SEQ_START_CODE);
+        /* mpeg1 header repeated every gop */
+        put_header(s, SEQ_START_CODE);
 
-            put_sbits(&s->pb, 12, s->width );
-            put_sbits(&s->pb, 12, s->height);
+        put_sbits(&s->pb, 12, s->width);
+        put_sbits(&s->pb, 12, s->height);
 
-            for(i=1; i<15; i++){
-                float error= aspect_ratio;
-                if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <=1)
-                    error-= 1.0/ff_mpeg1_aspect[i];
-                else
-                    error-= av_q2d(ff_mpeg2_aspect[i])*s->height/s->width;
+        for (i = 1; i < 15; i++) {
+            float error = aspect_ratio;
+            if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || i <= 1)
+                error -= 1.0 / ff_mpeg1_aspect[i];
+            else
+                error -= av_q2d(ff_mpeg2_aspect[i]) * s->height / s->width;
 
-                error= FFABS(error);
+            error = FFABS(error);
 
-                if(error < best_aspect_error){
-                    best_aspect_error= error;
-                    s->aspect_ratio_info= i;
-                }
+            if (error < best_aspect_error) {
+                best_aspect_error    = error;
+                s->aspect_ratio_info = i;
             }
+        }
 
-            put_bits(&s->pb, 4, s->aspect_ratio_info);
-            put_bits(&s->pb, 4, s->frame_rate_index);
+        put_bits(&s->pb, 4, s->aspect_ratio_info);
+        put_bits(&s->pb, 4, s->frame_rate_index);
 
-            if(s->avctx->rc_max_rate){
-                v = (s->avctx->rc_max_rate + 399) / 400;
-                if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
-                    v = 0x3ffff;
-            }else{
-                v= 0x3FFFF;
-            }
+        if (s->avctx->rc_max_rate) {
+            v = (s->avctx->rc_max_rate + 399) / 400;
+            if (v > 0x3ffff && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
+                v = 0x3ffff;
+        } else {
+            = 0x3FFFF;
+        }
 
-            if(s->avctx->rc_buffer_size)
-                vbv_buffer_size = s->avctx->rc_buffer_size;
-            else
-                /* VBV calculation: Scaled so that a VCD has the proper VBV size of 40 kilobytes */
-                vbv_buffer_size = (( 20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
-            vbv_buffer_size= (vbv_buffer_size + 16383) / 16384;
-
-            put_sbits(&s->pb, 18, v);
-            put_bits(&s->pb, 1, 1); /* marker */
-            put_sbits(&s->pb, 10, vbv_buffer_size);
-
-            constraint_parameter_flag=
-                s->width <= 768 && s->height <= 576 &&
-                s->mb_width * s->mb_height <= 396 &&
-                s->mb_width * s->mb_height * framerate.num <= framerate.den*396*25 &&
-                framerate.num <= framerate.den*30 &&
-                s->avctx->me_range && s->avctx->me_range < 128 &&
-                vbv_buffer_size <= 20 &&
-                v <= 1856000/400 &&
-                s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
-
-            put_bits(&s->pb, 1, constraint_parameter_flag);
-
-            ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
-            ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
-
-            if(s->codec_id == AV_CODEC_ID_MPEG2VIDEO){
-                put_header(s, EXT_START_CODE);
-                put_bits(&s->pb, 4, 1); //seq ext
-
-                put_bits(&s->pb, 1, s->avctx->profile == 0); //escx 1 for 4:2:2 profile */
-
-                put_bits(&s->pb, 3, s->avctx->profile); //profile
-                put_bits(&s->pb, 4, s->avctx->level); //level
-
-                put_bits(&s->pb, 1, s->progressive_sequence);
-                put_bits(&s->pb, 2, s->chroma_format);
-                put_bits(&s->pb, 2, s->width >>12);
-                put_bits(&s->pb, 2, s->height>>12);
-                put_bits(&s->pb, 12, v>>18); //bitrate ext
-                put_bits(&s->pb, 1, 1); //marker
-                put_bits(&s->pb, 8, vbv_buffer_size >>10); //vbv buffer ext
-                put_bits(&s->pb, 1, s->low_delay);
-                put_bits(&s->pb, 2, 0); // frame_rate_ext_n
-                put_bits(&s->pb, 5, 0); // frame_rate_ext_d
-            }
+        if (s->avctx->rc_buffer_size)
+            vbv_buffer_size = s->avctx->rc_buffer_size;
+        else
+            /* VBV calculation: Scaled so that a VCD has the proper
+             * VBV size of 40 kilobytes */
+            vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
+        vbv_buffer_size = (vbv_buffer_size + 16383) / 16384;
+
+        put_sbits(&s->pb, 18, v);
+        put_bits(&s->pb, 1, 1);         // marker
+        put_sbits(&s->pb, 10, vbv_buffer_size);
+
+        constraint_parameter_flag =
+            s->width  <= 768                                    &&
+            s->height <= 576                                    &&
+            s->mb_width * s->mb_height                 <= 396   &&
+            s->mb_width * s->mb_height * framerate.num <= 396 * 25 * framerate.den &&
+            framerate.num <= framerate.den * 30                 &&
+            s->avctx->me_range                                  &&
+            s->avctx->me_range < 128                            &&
+            vbv_buffer_size <= 20                               &&
+            v <= 1856000 / 400                                  &&
+            s->codec_id == AV_CODEC_ID_MPEG1VIDEO;
+
+        put_bits(&s->pb, 1, constraint_parameter_flag);
+
+        ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
+        ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
+
+        if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
+            put_header(s, EXT_START_CODE);
+            put_bits(&s->pb, 4, 1);                 // seq ext
+
+            put_bits(&s->pb, 1, s->avctx->profile == 0); // escx 1 for 4:2:2 profile
+
+            put_bits(&s->pb, 3, s->avctx->profile); // profile
+            put_bits(&s->pb, 4, s->avctx->level);   // level
+
+            put_bits(&s->pb, 1, s->progressive_sequence);
+            put_bits(&s->pb, 2, s->chroma_format);
+            put_bits(&s->pb, 2, s->width  >> 12);
+            put_bits(&s->pb, 2, s->height >> 12);
+            put_bits(&s->pb, 12, v >> 18);          // bitrate ext
+            put_bits(&s->pb, 1, 1);                 // marker
+            put_bits(&s->pb, 8, vbv_buffer_size >> 10); // vbv buffer ext
+            put_bits(&s->pb, 1, s->low_delay);
+            put_bits(&s->pb, 2, 0);                 // frame_rate_ext_n
+            put_bits(&s->pb, 5, 0);                 // frame_rate_ext_d
+        }
 
-            put_header(s, GOP_START_CODE);
-            put_bits(&s->pb, 1, s->drop_frame_timecode); /* drop frame flag */
-            /* time code : we must convert from the real frame rate to a
-               fake mpeg frame rate in case of low frame rate */
-            fps = (framerate.num + framerate.den/2)/ framerate.den;
-            time_code = s->current_picture_ptr->f.coded_picture_number + s->avctx->timecode_frame_start;
-
-            s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number;
-            if (s->drop_frame_timecode) {
-                /* only works for NTSC 29.97 */
-                int d = time_code / 17982;
-                int m = time_code % 17982;
-                //if (m < 2) m += 2; /* not needed since -2,-1 / 1798 in C returns 0 */
-                time_code += 18 * d + 2 * ((m - 2) / 1798);
-            }
-            put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
-            put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60));
-            put_bits(&s->pb, 1, 1);
-            put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
-            put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
-            put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP));
-            put_bits(&s->pb, 1, 0); /* broken link */
+        put_header(s, GOP_START_CODE);
+        put_bits(&s->pb, 1, s->drop_frame_timecode);    // drop frame flag
+        /* time code: we must convert from the real frame rate to a
+         * fake MPEG frame rate in case of low frame rate */
+        fps       = (framerate.num + framerate.den / 2) / framerate.den;
+        time_code = s->current_picture_ptr->f.coded_picture_number +
+                    s->avctx->timecode_frame_start;
+
+        s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number;
+        if (s->drop_frame_timecode) {
+            /* only works for NTSC 29.97 */
+            int d = time_code / 17982;
+            int m = time_code % 17982;
+            /* not needed since -2,-1 / 1798 in C returns 0 */
+            // if (m < 2)
+            //     m += 2;
+            time_code += 18 * d + 2 * ((m - 2) / 1798);
         }
+        put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
+        put_bits(&s->pb, 6, (uint32_t)((time_code / (fps *   60)) % 60));
+        put_bits(&s->pb, 1, 1);
+        put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
+        put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
+        put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP));
+        put_bits(&s->pb, 1, 0);                     // broken link
+    }
 }
 
-static inline void encode_mb_skip_run(MpegEncContext *s, int run){
+static inline void encode_mb_skip_run(MpegEncContext *s, int run)
+{
     while (run >= 33) {
         put_bits(&s->pb, 11, 0x008);
         run -= 33;
@@ -308,23 +324,26 @@ static inline void encode_mb_skip_run(MpegEncContext *s, int run){
 
 static av_always_inline void put_qscale(MpegEncContext *s)
 {
-    if(s->q_scale_type){
-        assert(s->qscale>=1 && s->qscale <=12);
+    if (s->q_scale_type) {
+        assert(s->qscale >= 1 && s->qscale <= 12);
         put_bits(&s->pb, 5, inv_non_linear_qscale[s->qscale]);
-    }else{
+    } else {
         put_bits(&s->pb, 5, s->qscale);
     }
 }
 
-void ff_mpeg1_encode_slice_header(MpegEncContext *s){
+void ff_mpeg1_encode_slice_header(MpegEncContext *s)
+{
     if (s->height > 2800) {
         put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
-        put_bits(&s->pb, 3, s->mb_y >> 7);  /* slice_vertical_position_extension */
+        /* slice_vertical_position_extension */
+        put_bits(&s->pb, 3, s->mb_y >> 7);
     } else {
         put_header(s, SLICE_MIN_START_CODE + s->mb_y);
     }
     put_qscale(s);
-    put_bits(&s->pb, 1, 0); /* slice extra information */
+    /* slice extra information */
+    put_bits(&s->pb, 1, 0);
 }
 
 void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
@@ -336,60 +355,60 @@ void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
     /* temporal reference */
 
     // RAL: s->picture_number instead of s->fake_picture_number
-    put_bits(&s->pb, 10, (s->picture_number -
-                          s->gop_picture_number) & 0x3ff);
+    put_bits(&s->pb, 10,
+             (s->picture_number - s->gop_picture_number) & 0x3ff);
     put_bits(&s->pb, 3, s->pict_type);
 
-    s->vbv_delay_ptr= s->pb.buf + put_bits_count(&s->pb)/8;
-    put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */
+    s->vbv_delay_ptr = s->pb.buf + put_bits_count(&s->pb) / 8;
+    put_bits(&s->pb, 16, 0xFFFF);               /* vbv_delay */
 
-    // RAL: Forward f_code also needed for B frames
-    if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
-        put_bits(&s->pb, 1, 0); /* half pel coordinates */
-        if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
-            put_bits(&s->pb, 3, s->f_code); /* forward_f_code */
+    // RAL: Forward f_code also needed for B-frames
+    if (s->pict_type == AV_PICTURE_TYPE_P ||
+        s->pict_type == AV_PICTURE_TYPE_B) {
+        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
+        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
+            put_bits(&s->pb, 3, s->f_code);     /* forward_f_code */
         else
-            put_bits(&s->pb, 3, 7); /* forward_f_code */
+            put_bits(&s->pb, 3, 7);             /* forward_f_code */
     }
 
-    // RAL: Backward f_code necessary for B frames
+    // RAL: Backward f_code necessary for B-frames
     if (s->pict_type == AV_PICTURE_TYPE_B) {
-        put_bits(&s->pb, 1, 0); /* half pel coordinates */
-        if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
-            put_bits(&s->pb, 3, s->b_code); /* backward_f_code */
+        put_bits(&s->pb, 1, 0);                 /* half pel coordinates */
+        if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO)
+            put_bits(&s->pb, 3, s->b_code);     /* backward_f_code */
         else
-            put_bits(&s->pb, 3, 7); /* backward_f_code */
+            put_bits(&s->pb, 3, 7);             /* backward_f_code */
     }
 
-    put_bits(&s->pb, 1, 0); /* extra bit picture */
+    put_bits(&s->pb, 1, 0);                     /* extra bit picture */
 
     s->frame_pred_frame_dct = 1;
-    if(s->codec_id == AV_CODEC_ID_MPEG2VIDEO){
+    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
         put_header(s, EXT_START_CODE);
-        put_bits(&s->pb, 4, 8); //pic ext
-        if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
+        put_bits(&s->pb, 4, 8);                 /* pic ext */
+        if (s->pict_type == AV_PICTURE_TYPE_P ||
+            s->pict_type == AV_PICTURE_TYPE_B) {
             put_bits(&s->pb, 4, s->f_code);
             put_bits(&s->pb, 4, s->f_code);
-        }else{
+        } else {
             put_bits(&s->pb, 8, 255);
         }
         if (s->pict_type == AV_PICTURE_TYPE_B) {
             put_bits(&s->pb, 4, s->b_code);
             put_bits(&s->pb, 4, s->b_code);
-        }else{
+        } else {
             put_bits(&s->pb, 8, 255);
         }
         put_bits(&s->pb, 2, s->intra_dc_precision);
 
         assert(s->picture_structure == PICT_FRAME);
         put_bits(&s->pb, 2, s->picture_structure);
-        if (s->progressive_sequence) {
-            put_bits(&s->pb, 1, 0); /* no repeat */
-        } else {
+        if (s->progressive_sequence)
+            put_bits(&s->pb, 1, 0);             /* no repeat */
+        else
             put_bits(&s->pb, 1, s->current_picture_ptr->f.top_field_first);
-        }
-        /* XXX: optimize the generation of this flag with entropy
-           measures */
+        /* XXX: optimize the generation of this flag with entropy measures */
         s->frame_pred_frame_dct = s->progressive_sequence;
 
         put_bits(&s->pb, 1, s->frame_pred_frame_dct);
@@ -399,20 +418,21 @@ void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
         put_bits(&s->pb, 1, s->alternate_scan);
         put_bits(&s->pb, 1, s->repeat_first_field);
         s->progressive_frame = s->progressive_sequence;
-        put_bits(&s->pb, 1, s->chroma_format == CHROMA_420 ? s->progressive_frame : 0); /* chroma_420_type */
+        /* chroma_420_type */
+        put_bits(&s->pb, 1, s->chroma_format ==
+                            CHROMA_420 ? s->progressive_frame : 0);
         put_bits(&s->pb, 1, s->progressive_frame);
-        put_bits(&s->pb, 1, 0); //composite_display_flag
+        put_bits(&s->pb, 1, 0);                 /* composite_display_flag */
     }
     if (s->scan_offset) {
         int i;
 
         put_header(s, USER_START_CODE);
-        for(i=0; i<sizeof(svcd_scan_offset_placeholder); i++){
+        for (i = 0; i < sizeof(svcd_scan_offset_placeholder); i++)
             put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
-        }
     }
 
-    s->mb_y=0;
+    s->mb_y = 0;
     ff_mpeg1_encode_slice_header(s);
 }
 
@@ -422,7 +442,8 @@ static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
     put_bits(&s->pb, n, bits);
     if (!s->frame_pred_frame_dct) {
         if (has_mv)
-            put_bits(&s->pb, 2, 2 - field_motion); /* motion_type: frame/field */
+            /* motion_type: frame/field */
+            put_bits(&s->pb, 2, 2 - field_motion);
         put_bits(&s->pb, 1, s->interlaced_dct);
     }
 }
@@ -438,7 +459,7 @@ static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
     } else {
         int code, sign, bits;
         int bit_size = f_or_b_code - 1;
-        int range = 1 << bit_size;
+        int range    = 1 << bit_size;
         /* modulo encoding */
         val = sign_extend(val, 5 + bit_size);
 
@@ -462,52 +483,45 @@ static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
                  ff_mpeg12_mbMotionVectorTable[code][0]);
 
         put_bits(&s->pb, 1, sign);
-        if (bit_size > 0) {
+        if (bit_size > 0)
             put_bits(&s->pb, bit_size, bits);
-        }
     }
 }
 
 static inline void encode_dc(MpegEncContext *s, int diff, int component)
 {
-  if(((unsigned) (diff+255)) >= 511){
+    if (((unsigned) (diff + 255)) >= 511) {
         int index;
 
-        if(diff<0){
-            index= av_log2_16bit(-2*diff);
+        if (diff < 0) {
+            index = av_log2_16bit(-2 * diff);
             diff--;
-        }else{
-            index= av_log2_16bit(2*diff);
-        }
-        if (component == 0) {
-            put_bits(
-                &s->pb,
-                ff_mpeg12_vlc_dc_lum_bits[index] + index,
-                (ff_mpeg12_vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
-        }else{
-            put_bits(
-                &s->pb,
-                ff_mpeg12_vlc_dc_chroma_bits[index] + index,
-                (ff_mpeg12_vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1)));
+        } else {
+            index = av_log2_16bit(2 * diff);
         }
-  }else{
-    if (component == 0) {
-        put_bits(
-            &s->pb,
-            mpeg1_lum_dc_uni[diff+255]&0xFF,
-            mpeg1_lum_dc_uni[diff+255]>>8);
+        if (component == 0)
+            put_bits(&s->pb,
+                     ff_mpeg12_vlc_dc_lum_bits[index] + index,
+                     (ff_mpeg12_vlc_dc_lum_code[index] << index) +
+                     (diff & ((1 << index) - 1)));
+        else
+            put_bits(&s->pb,
+                     ff_mpeg12_vlc_dc_chroma_bits[index] + index,
+                     (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
+                     (diff & ((1 << index) - 1)));
     } else {
-        put_bits(
-            &s->pb,
-            mpeg1_chr_dc_uni[diff+255]&0xFF,
-            mpeg1_chr_dc_uni[diff+255]>>8);
+        if (component == 0)
+            put_bits(&s->pb,
+                     mpeg1_lum_dc_uni[diff + 255] & 0xFF,
+                     mpeg1_lum_dc_uni[diff + 255] >> 8);
+        else
+            put_bits(&s->pb,
+                     mpeg1_chr_dc_uni[diff + 255] & 0xFF,
+                     mpeg1_chr_dc_uni[diff + 255] >> 8);
     }
-  }
 }
 
-static void mpeg1_encode_block(MpegEncContext *s,
-                               int16_t *block,
-                               int n)
+static void mpeg1_encode_block(MpegEncContext *s, int16_t *block, int n)
 {
     int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
     int code, component;
@@ -517,24 +531,24 @@ static void mpeg1_encode_block(MpegEncContext *s,
 
     /* DC coef */
     if (s->mb_intra) {
-        component = (n <= 3 ? 0 : (n&1) + 1);
-        dc = block[0]; /* overflow is impossible */
-        diff = dc - s->last_dc[component];
+        component = (n <= 3 ? 0 : (n & 1) + 1);
+        dc        = block[0];                   /* overflow is impossible */
+        diff      = dc - s->last_dc[component];
         encode_dc(s, diff, component);
         s->last_dc[component] = dc;
         i = 1;
         if (s->intra_vlc_format)
             table_vlc = ff_rl_mpeg2.table_vlc;
     } else {
-        /* encode the first coefficient : needs to be done here because
-           it is handled slightly differently */
+        /* encode the first coefficient: needs to be done here because
+         * it is handled slightly differently */
         level = block[0];
         if (abs(level) == 1) {
-                code = ((uint32_t)level >> 31); /* the sign bit */
-                put_bits(&s->pb, 2, code | 0x02);
-                i = 1;
+            code = ((uint32_t)level >> 31);     /* the sign bit */
+            put_bits(&s->pb, 2, code | 0x02);
+            i = 1;
         } else {
-            i = 0;
+            i             = 0;
             last_non_zero = -1;
             goto next_coef;
         }
@@ -543,38 +557,39 @@ static void mpeg1_encode_block(MpegEncContext *s,
     /* now quantify & encode AC coefs */
     last_non_zero = i - 1;
 
-    for(;i<=last_index;i++) {
-        j = s->intra_scantable.permutated[i];
+    for (; i <= last_index; i++) {
+        j     = s->intra_scantable.permutated[i];
         level = block[j];
-    next_coef:
+
+next_coef:
         /* encode using VLC */
         if (level != 0) {
             run = i - last_non_zero - 1;
 
-            alevel= level;
+            alevel = level;
             MASK_ABS(sign, alevel);
-            sign&=1;
+            sign &= 1;
 
-            if (alevel <= mpeg1_max_level[0][run]){
-                code= mpeg1_index_run[0][run] + alevel - 1;
-                /* store the vlc & sign at once */
-                put_bits(&s->pb, table_vlc[code][1]+1, (table_vlc[code][0]<<1) + sign);
+            if (alevel <= mpeg1_max_level[0][run]) {
+                code = mpeg1_index_run[0][run] + alevel - 1;
+                /* store the VLC & sign at once */
+                put_bits(&s->pb, table_vlc[code][1] + 1,
+                         (table_vlc[code][0] << 1) + sign);
             } else {
                 /* escape seems to be pretty rare <5% so I do not optimize it */
                 put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
                 /* escape: only clip in this case */
                 put_bits(&s->pb, 6, run);
-                if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO){
+                if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
                     if (alevel < 128) {
                         put_sbits(&s->pb, 8, level);
                     } else {
-                        if (level < 0) {
+                        if (level < 0)
                             put_bits(&s->pb, 16, 0x8001 + level + 255);
-                        } else {
+                        else
                             put_sbits(&s->pb, 16, level);
-                        }
                     }
-                }else{
+                } else {
                     put_sbits(&s->pb, 12, level);
                 }
             }
@@ -586,340 +601,399 @@ static void mpeg1_encode_block(MpegEncContext *s,
 }
 
 static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
-                                                   int16_t block[6][64],
-                                                   int motion_x, int motion_y,
-                                                   int mb_block_count)
+                                                      int16_t block[6][64],
+                                                      int motion_x, int motion_y,
+                                                      int mb_block_count)
 {
     int i, cbp;
-    const int mb_x = s->mb_x;
-    const int mb_y = s->mb_y;
-    const int first_mb= mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
+    const int mb_x     = s->mb_x;
+    const int mb_y     = s->mb_y;
+    const int first_mb = mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
 
     /* compute cbp */
     cbp = 0;
-    for(i=0;i<mb_block_count;i++) {
+    for (i = 0; i < mb_block_count; i++)
         if (s->block_last_index[i] >= 0)
             cbp |= 1 << (mb_block_count - 1 - i);
-    }
 
     if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
-        (mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
+        (mb_x != s->mb_width - 1 ||
+         (mb_y != s->mb_height - 1 && s->codec_id == AV_CODEC_ID_MPEG1VIDEO)) &&
         ((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
-        (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
-        ((s->mv_dir & MV_DIR_BACKWARD) ? ((s->mv[1][0][0] - s->last_mv[1][0][0])|(s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
+         (s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir &&
+          (((s->mv_dir & MV_DIR_FORWARD)
+            ? ((s->mv[0][0][0] - s->last_mv[0][0][0]) |
+               (s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
+           ((s->mv_dir & MV_DIR_BACKWARD)
+            ? ((s->mv[1][0][0] - s->last_mv[1][0][0]) |
+               (s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
         s->mb_skip_run++;
         s->qscale -= s->dquant;
         s->skip_count++;
         s->misc_bits++;
         s->last_bits++;
-        if(s->pict_type == AV_PICTURE_TYPE_P){
-            s->last_mv[0][1][0]= s->last_mv[0][0][0]=
-            s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0;
+        if (s->pict_type == AV_PICTURE_TYPE_P) {
+            s->last_mv[0][0][0] =
+            s->last_mv[0][0][1] =
+            s->last_mv[0][1][0] =
+            s->last_mv[0][1][1] = 0;
         }
     } else {
-        if(first_mb){
+        if (first_mb) {
             assert(s->mb_skip_run == 0);
             encode_mb_skip_run(s, s->mb_x);
-        }else{
+        } else {
             encode_mb_skip_run(s, s->mb_skip_run);
         }
 
         if (s->pict_type == AV_PICTURE_TYPE_I) {
-            if(s->dquant && cbp){
-                put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
+            if (s->dquant && cbp) {
+                /* macroblock_type: macroblock_quant = 1 */
+                put_mb_modes(s, 2, 1, 0, 0);
                 put_qscale(s);
-            }else{
-                put_mb_modes(s, 1, 1, 0, 0); /* macroblock_type : macroblock_quant = 0 */
+            } else {
+                /* macroblock_type: macroblock_quant = 0 */
+                put_mb_modes(s, 1, 1, 0, 0);
                 s->qscale -= s->dquant;
             }
-            s->misc_bits+= get_bits_diff(s);
+            s->misc_bits += get_bits_diff(s);
             s->i_count++;
         } else if (s->mb_intra) {
-            if(s->dquant && cbp){
+            if (s->dquant && cbp) {
                 put_mb_modes(s, 6, 0x01, 0, 0);
                 put_qscale(s);
-            }else{
+            } else {
                 put_mb_modes(s, 5, 0x03, 0, 0);
                 s->qscale -= s->dquant;
             }
-            s->misc_bits+= get_bits_diff(s);
+            s->misc_bits += get_bits_diff(s);
             s->i_count++;
             memset(s->last_mv, 0, sizeof(s->last_mv));
         } else if (s->pict_type == AV_PICTURE_TYPE_P) {
-            if(s->mv_type == MV_TYPE_16X16){
+            if (s->mv_type == MV_TYPE_16X16) {
                 if (cbp != 0) {
-                    if ((motion_x|motion_y) == 0) {
-                        if(s->dquant){
-                            put_mb_modes(s, 5, 1, 0, 0); /* macroblock_pattern & quant */
+                    if ((motion_x | motion_y) == 0) {
+                        if (s->dquant) {
+                            /* macroblock_pattern & quant */
+                            put_mb_modes(s, 5, 1, 0, 0);
                             put_qscale(s);
-                        }else{
-                            put_mb_modes(s, 2, 1, 0, 0); /* macroblock_pattern only */
+                        } else {
+                            /* macroblock_pattern only */
+                            put_mb_modes(s, 2, 1, 0, 0);
                         }
-                        s->misc_bits+= get_bits_diff(s);
+                        s->misc_bits += get_bits_diff(s);
                     } else {
-                        if(s->dquant){
-                            put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */
+                        if (s->dquant) {
+                            put_mb_modes(s, 5, 2, 1, 0);    /* motion + cbp */
                             put_qscale(s);
-                        }else{
-                            put_mb_modes(s, 1, 1, 1, 0); /* motion + cbp */
+                        } else {
+                            put_mb_modes(s, 1, 1, 1, 0);    /* motion + cbp */
                         }
-                        s->misc_bits+= get_bits_diff(s);
-                        mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code);    // RAL: f_code parameter added
-                        mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code);    // RAL: f_code parameter added
-                        s->mv_bits+= get_bits_diff(s);
+                        s->misc_bits += get_bits_diff(s);
+                        // RAL: f_code parameter added
+                        mpeg1_encode_motion(s,
+                                            motion_x - s->last_mv[0][0][0],
+                                            s->f_code);
+                        // RAL: f_code parameter added
+                        mpeg1_encode_motion(s,
+                                            motion_y - s->last_mv[0][0][1],
+                                            s->f_code);
+                        s->mv_bits += get_bits_diff(s);
                     }
                 } else {
-                    put_bits(&s->pb, 3, 1); /* motion only */
+                    put_bits(&s->pb, 3, 1);         /* motion only */
                     if (!s->frame_pred_frame_dct)
-                        put_bits(&s->pb, 2, 2); /* motion_type: frame */
-                    s->misc_bits+= get_bits_diff(s);
-                    mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code);    // RAL: f_code parameter added
-                    mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code);    // RAL: f_code parameter added
-                    s->qscale -= s->dquant;
-                    s->mv_bits+= get_bits_diff(s);
+                        put_bits(&s->pb, 2, 2);     /* motion_type: frame */
+                    s->misc_bits += get_bits_diff(s);
+                    // RAL: f_code parameter added
+                    mpeg1_encode_motion(s,
+                                        motion_x - s->last_mv[0][0][0],
+                                        s->f_code);
+                    // RAL: f_code parameter added
+                    mpeg1_encode_motion(s,
+                                        motion_y - s->last_mv[0][0][1],
+                                        s->f_code);
+                    s->qscale  -= s->dquant;
+                    s->mv_bits += get_bits_diff(s);
                 }
-                s->last_mv[0][1][0]= s->last_mv[0][0][0]= motion_x;
-                s->last_mv[0][1][1]= s->last_mv[0][0][1]= motion_y;
-            }else{
+                s->last_mv[0][1][0] = s->last_mv[0][0][0] = motion_x;
+                s->last_mv[0][1][1] = s->last_mv[0][0][1] = motion_y;
+            } else {
                 assert(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
 
                 if (cbp) {
-                    if(s->dquant){
-                        put_mb_modes(s, 5, 2, 1, 1); /* motion + cbp */
+                    if (s->dquant) {
+                        put_mb_modes(s, 5, 2, 1, 1);    /* motion + cbp */
                         put_qscale(s);
-                    }else{
-                        put_mb_modes(s, 1, 1, 1, 1); /* motion + cbp */
+                    } else {
+                        put_mb_modes(s, 1, 1, 1, 1);    /* motion + cbp */
                     }
                 } else {
-                    put_bits(&s->pb, 3, 1); /* motion only */
-                    put_bits(&s->pb, 2, 1); /* motion_type: field */
+                    put_bits(&s->pb, 3, 1);             /* motion only */
+                    put_bits(&s->pb, 2, 1);             /* motion_type: field */
                     s->qscale -= s->dquant;
                 }
-                s->misc_bits+= get_bits_diff(s);
-                for(i=0; i<2; i++){
+                s->misc_bits += get_bits_diff(s);
+                for (i = 0; i < 2; i++) {
                     put_bits(&s->pb, 1, s->field_select[0][i]);
-                    mpeg1_encode_motion(s, s->mv[0][i][0] -  s->last_mv[0][i][0]    , s->f_code);
-                    mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
-                    s->last_mv[0][i][0]=   s->mv[0][i][0];
-                    s->last_mv[0][i][1]= 2*s->mv[0][i][1];
+                    mpeg1_encode_motion(s,
+                                        s->mv[0][i][0] - s->last_mv[0][i][0],
+                                        s->f_code);
+                    mpeg1_encode_motion(s,
+                                        s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
+                                        s->f_code);
+                    s->last_mv[0][i][0] = s->mv[0][i][0];
+                    s->last_mv[0][i][1] = 2 * s->mv[0][i][1];
                 }
-                s->mv_bits+= get_bits_diff(s);
+                s->mv_bits += get_bits_diff(s);
             }
-            if(cbp) {
+            if (cbp) {
                 if (s->chroma_y_shift) {
-                    put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]);
+                    put_bits(&s->pb,
+                             ff_mpeg12_mbPatTable[cbp][1],
+                             ff_mpeg12_mbPatTable[cbp][0]);
                 } else {
-                    put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]);
+                    put_bits(&s->pb,
+                             ff_mpeg12_mbPatTable[cbp >> 2][1],
+                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
                     put_sbits(&s->pb, 2, cbp);
                 }
             }
             s->f_count++;
-        } else{
-            if(s->mv_type == MV_TYPE_16X16){
-                if (cbp){    // With coded bloc pattern
+        } else {
+            if (s->mv_type == MV_TYPE_16X16) {
+                if (cbp) {                      // With coded bloc pattern
                     if (s->dquant) {
-                        if(s->mv_dir == MV_DIR_FORWARD)
+                        if (s->mv_dir == MV_DIR_FORWARD)
                             put_mb_modes(s, 6, 3, 1, 0);
                         else
-                            put_mb_modes(s, 8-s->mv_dir, 2, 1, 0);
+                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 0);
                         put_qscale(s);
                     } else {
-                        put_mb_modes(s, 5-s->mv_dir, 3, 1, 0);
+                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 0);
                     }
-                }else{    // No coded bloc pattern
-                    put_bits(&s->pb, 5-s->mv_dir, 2);
+                } else {                        // No coded bloc pattern
+                    put_bits(&s->pb, 5 - s->mv_dir, 2);
                     if (!s->frame_pred_frame_dct)
                         put_bits(&s->pb, 2, 2); /* motion_type: frame */
                     s->qscale -= s->dquant;
                 }
                 s->misc_bits += get_bits_diff(s);
-                if (s->mv_dir&MV_DIR_FORWARD){
-                    mpeg1_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
-                    mpeg1_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
-                    s->last_mv[0][0][0]=s->last_mv[0][1][0]= s->mv[0][0][0];
-                    s->last_mv[0][0][1]=s->last_mv[0][1][1]= s->mv[0][0][1];
+                if (s->mv_dir & MV_DIR_FORWARD) {
+                    mpeg1_encode_motion(s,
+                                        s->mv[0][0][0] - s->last_mv[0][0][0],
+                                        s->f_code);
+                    mpeg1_encode_motion(s,
+                                        s->mv[0][0][1] - s->last_mv[0][0][1],
+                                        s->f_code);
+                    s->last_mv[0][0][0] =
+                    s->last_mv[0][1][0] = s->mv[0][0][0];
+                    s->last_mv[0][0][1] =
+                    s->last_mv[0][1][1] = s->mv[0][0][1];
                     s->f_count++;
                 }
-                if (s->mv_dir&MV_DIR_BACKWARD){
-                    mpeg1_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
-                    mpeg1_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
-                    s->last_mv[1][0][0]=s->last_mv[1][1][0]= s->mv[1][0][0];
-                    s->last_mv[1][0][1]=s->last_mv[1][1][1]= s->mv[1][0][1];
+                if (s->mv_dir & MV_DIR_BACKWARD) {
+                    mpeg1_encode_motion(s,
+                                        s->mv[1][0][0] - s->last_mv[1][0][0],
+                                        s->b_code);
+                    mpeg1_encode_motion(s,
+                                        s->mv[1][0][1] - s->last_mv[1][0][1],
+                                        s->b_code);
+                    s->last_mv[1][0][0] =
+                    s->last_mv[1][1][0] = s->mv[1][0][0];
+                    s->last_mv[1][0][1] =
+                    s->last_mv[1][1][1] = s->mv[1][0][1];
                     s->b_count++;
                 }
-            }else{
+            } else {
                 assert(s->mv_type == MV_TYPE_FIELD);
                 assert(!s->frame_pred_frame_dct);
-                if (cbp){    // With coded bloc pattern
+                if (cbp) {                      // With coded bloc pattern
                     if (s->dquant) {
-                        if(s->mv_dir == MV_DIR_FORWARD)
+                        if (s->mv_dir == MV_DIR_FORWARD)
                             put_mb_modes(s, 6, 3, 1, 1);
                         else
-                            put_mb_modes(s, 8-s->mv_dir, 2, 1, 1);
+                            put_mb_modes(s, 8 - s->mv_dir, 2, 1, 1);
                         put_qscale(s);
                     } else {
-                        put_mb_modes(s, 5-s->mv_dir, 3, 1, 1);
+                        put_mb_modes(s, 5 - s->mv_dir, 3, 1, 1);
                     }
-                }else{    // No coded bloc pattern
-                    put_bits(&s->pb, 5-s->mv_dir, 2);
-                    put_bits(&s->pb, 2, 1); /* motion_type: field */
+                } else {                        // No coded bloc pattern
+                    put_bits(&s->pb, 5 - s->mv_dir, 2);
+                    put_bits(&s->pb, 2, 1);     /* motion_type: field */
                     s->qscale -= s->dquant;
                 }
                 s->misc_bits += get_bits_diff(s);
-                if (s->mv_dir&MV_DIR_FORWARD){
-                    for(i=0; i<2; i++){
+                if (s->mv_dir & MV_DIR_FORWARD) {
+                    for (i = 0; i < 2; i++) {
                         put_bits(&s->pb, 1, s->field_select[0][i]);
-                        mpeg1_encode_motion(s, s->mv[0][i][0] -  s->last_mv[0][i][0]    , s->f_code);
-                        mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
-                        s->last_mv[0][i][0]=   s->mv[0][i][0];
-                        s->last_mv[0][i][1]= 2*s->mv[0][i][1];
+                        mpeg1_encode_motion(s,
+                                            s->mv[0][i][0] - s->last_mv[0][i][0],
+                                            s->f_code);
+                        mpeg1_encode_motion(s,
+                                            s->mv[0][i][1] - (s->last_mv[0][i][1] >> 1),
+                                            s->f_code);
+                        s->last_mv[0][i][0] = s->mv[0][i][0];
+                        s->last_mv[0][i][1] = s->mv[0][i][1] * 2;
                     }
                     s->f_count++;
                 }
-                if (s->mv_dir&MV_DIR_BACKWARD){
-                    for(i=0; i<2; i++){
+                if (s->mv_dir & MV_DIR_BACKWARD) {
+                    for (i = 0; i < 2; i++) {
                         put_bits(&s->pb, 1, s->field_select[1][i]);
-                        mpeg1_encode_motion(s, s->mv[1][i][0] -  s->last_mv[1][i][0]    , s->b_code);
-                        mpeg1_encode_motion(s, s->mv[1][i][1] - (s->last_mv[1][i][1]>>1), s->b_code);
-                        s->last_mv[1][i][0]=   s->mv[1][i][0];
-                        s->last_mv[1][i][1]= 2*s->mv[1][i][1];
+                        mpeg1_encode_motion(s,
+                                            s->mv[1][i][0] - s->last_mv[1][i][0],
+                                            s->b_code);
+                        mpeg1_encode_motion(s,
+                                            s->mv[1][i][1] - (s->last_mv[1][i][1] >> 1),
+                                            s->b_code);
+                        s->last_mv[1][i][0] = s->mv[1][i][0];
+                        s->last_mv[1][i][1] = s->mv[1][i][1] * 2;
                     }
                     s->b_count++;
                 }
             }
             s->mv_bits += get_bits_diff(s);
-            if(cbp) {
+            if (cbp) {
                 if (s->chroma_y_shift) {
-                    put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]);
+                    put_bits(&s->pb,
+                             ff_mpeg12_mbPatTable[cbp][1],
+                             ff_mpeg12_mbPatTable[cbp][0]);
                 } else {
-                    put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]);
+                    put_bits(&s->pb,
+                             ff_mpeg12_mbPatTable[cbp >> 2][1],
+                             ff_mpeg12_mbPatTable[cbp >> 2][0]);
                     put_sbits(&s->pb, 2, cbp);
                 }
             }
         }
-        for(i=0;i<mb_block_count;i++) {
-            if (cbp & (1 << (mb_block_count - 1 - i))) {
+        for (i = 0; i < mb_block_count; i++)
+            if (cbp & (1 << (mb_block_count - 1 - i)))
                 mpeg1_encode_block(s, block[i], i);
-            }
-        }
         s->mb_skip_run = 0;
-        if(s->mb_intra)
-            s->i_tex_bits+= get_bits_diff(s);
+        if (s->mb_intra)
+            s->i_tex_bits += get_bits_diff(s);
         else
-            s->p_tex_bits+= get_bits_diff(s);
+            s->p_tex_bits += get_bits_diff(s);
     }
 }
 
-void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
+void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[6][64],
+                        int motion_x, int motion_y)
 {
-    if (s->chroma_format == CHROMA_420) mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
-    else                                mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
+    if (s->chroma_format == CHROMA_420)
+        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
+    else
+        mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
 }
 
 av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
 {
-    static int done=0;
+    static int done = 0;
 
     ff_mpeg12_common_init(s);
 
-    if(!done){
+    if (!done) {
         int f_code;
         int mv;
         int i;
 
-        done=1;
+        done = 1;
         ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
         ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
 
-        for(i=0; i<64; i++)
-        {
-                mpeg1_max_level[0][i]= ff_rl_mpeg1.max_level[0][i];
-                mpeg1_index_run[0][i]= ff_rl_mpeg1.index_run[0][i];
+        for (i = 0; i < 64; i++) {
+            mpeg1_max_level[0][i] = ff_rl_mpeg1.max_level[0][i];
+            mpeg1_index_run[0][i] = ff_rl_mpeg1.index_run[0][i];
         }
 
         init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
-        if(s->intra_vlc_format)
+        if (s->intra_vlc_format)
             init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
 
         /* build unified dc encoding tables */
-        for(i=-255; i<256; i++)
-        {
-                int adiff, index;
-                int bits, code;
-                int diff=i;
-
-                adiff = FFABS(diff);
-                if(diff<0) diff--;
-                index = av_log2(2*adiff);
-
-                bits= ff_mpeg12_vlc_dc_lum_bits[index] + index;
-                code= (ff_mpeg12_vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
-                mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
-
-                bits= ff_mpeg12_vlc_dc_chroma_bits[index] + index;
-                code= (ff_mpeg12_vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
-                mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
+        for (i = -255; i < 256; i++) {
+            int adiff, index;
+            int bits, code;
+            int diff = i;
+
+            adiff = FFABS(diff);
+            if (diff < 0)
+                diff--;
+            index = av_log2(2 * adiff);
+
+            bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
+            code = (ff_mpeg12_vlc_dc_lum_code[index] << index) +
+                   (diff & ((1 << index) - 1));
+            mpeg1_lum_dc_uni[i + 255] = bits + (code << 8);
+
+            bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
+            code = (ff_mpeg12_vlc_dc_chroma_code[index] << index) +
+                   (diff & ((1 << index) - 1));
+            mpeg1_chr_dc_uni[i + 255] = bits + (code << 8);
         }
 
-        for(f_code=1; f_code<=MAX_FCODE; f_code++){
-            for(mv=-MAX_MV; mv<=MAX_MV; mv++){
+        for (f_code = 1; f_code <= MAX_FCODE; f_code++)
+            for (mv = -MAX_MV; mv <= MAX_MV; mv++) {
                 int len;
 
-                if(mv==0) len= ff_mpeg12_mbMotionVectorTable[0][1];
-                else{
+                if (mv == 0) {
+                    len = ff_mpeg12_mbMotionVectorTable[0][1];
+                } else {
                     int val, bit_size, code;
 
                     bit_size = f_code - 1;
 
-                    val=mv;
+                    val = mv;
                     if (val < 0)
                         val = -val;
                     val--;
                     code = (val >> bit_size) + 1;
-                    if(code<17){
-                        len= ff_mpeg12_mbMotionVectorTable[code][1] + 1 + bit_size;
-                    }else{
-                        len= ff_mpeg12_mbMotionVectorTable[16][1] + 2 + bit_size;
-                    }
+                    if (code < 17)
+                        len = ff_mpeg12_mbMotionVectorTable[code][1] +
+                              1 + bit_size;
+                    else
+                        len = ff_mpeg12_mbMotionVectorTable[16][1] +
+                              2 + bit_size;
                 }
 
-                mv_penalty[f_code][mv+MAX_MV]= len;
+                mv_penalty[f_code][mv + MAX_MV] = len;
             }
-        }
 
 
-        for(f_code=MAX_FCODE; f_code>0; f_code--){
-            for(mv=-(8<<f_code); mv<(8<<f_code); mv++){
-                fcode_tab[mv+MAX_MV]= f_code;
-            }
-        }
+        for (f_code = MAX_FCODE; f_code > 0; f_code--)
+            for (mv = -(8 << f_code); mv < (8 << f_code); mv++)
+                fcode_tab[mv + MAX_MV] = f_code;
     }
-    s->me.mv_penalty= mv_penalty;
-    s->fcode_tab= fcode_tab;
-    if(s->codec_id == AV_CODEC_ID_MPEG1VIDEO){
-        s->min_qcoeff=-255;
-        s->max_qcoeff= 255;
-    }else{
-        s->min_qcoeff=-2047;
-        s->max_qcoeff= 2047;
+    s->me.mv_penalty = mv_penalty;
+    s->fcode_tab     = fcode_tab;
+    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
+        s->min_qcoeff = -255;
+        s->max_qcoeff = 255;
+    } else {
+        s->min_qcoeff = -2047;
+        s->max_qcoeff = 2047;
     }
     if (s->intra_vlc_format) {
-        s->intra_ac_vlc_length=
-        s->intra_ac_vlc_last_length= uni_mpeg2_ac_vlc_len;
+        s->intra_ac_vlc_length      =
+        s->intra_ac_vlc_last_length = uni_mpeg2_ac_vlc_len;
     } else {
-        s->intra_ac_vlc_length=
-        s->intra_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
+        s->intra_ac_vlc_length      =
+        s->intra_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
     }
-    s->inter_ac_vlc_length=
-    s->inter_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
+    s->inter_ac_vlc_length      =
+    s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
 }
 
 #define OFFSET(x) offsetof(MpegEncContext, x)
 #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
-#define COMMON_OPTS\
-    { "intra_vlc",           "Use MPEG-2 intra VLC table.",       OFFSET(intra_vlc_format),    AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },\
-    { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE}, \
-    { "scan_offset",         "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+#define COMMON_OPTS                                                           \
+    { "intra_vlc",           "Use MPEG-2 intra VLC table.",                   \
+      OFFSET(intra_vlc_format),    AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \
+    { "drop_frame_timecode", "Timecode is in drop frame format.",             \
+      OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \
+    { "scan_offset",         "Reserve space for SVCD scan offset user data.", \
+      OFFSET(scan_offset),         AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
 
 static const AVOption mpeg1_options[] = {
     COMMON_OPTS
@@ -929,18 +1003,18 @@ static const AVOption mpeg1_options[] = {
 
 static const AVOption mpeg2_options[] = {
     COMMON_OPTS
-    { "non_linear_quant",    "Use nonlinear quantizer.",          OFFSET(q_scale_type),         AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
-    { "alternate_scan",      "Enable alternate scantable.",       OFFSET(alternate_scan),       AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "non_linear_quant", "Use nonlinear quantizer.",    OFFSET(q_scale_type),   AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "alternate_scan",   "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
     FF_MPV_COMMON_OPTS
     { NULL },
 };
 
-#define mpeg12_class(x)\
-static const AVClass mpeg## x ##_class = {\
-    .class_name   = "mpeg" #x "video encoder",\
-    .item_name    = av_default_item_name,\
-    .option       = mpeg## x ##_options,\
-    .version      = LIBAVUTIL_VERSION_INT,\
+#define mpeg12_class(x)                                 \
+static const AVClass mpeg ## x ## _class = {            \
+    .class_name = "mpeg" # x "video encoder",           \
+    .item_name  = av_default_item_name,                 \
+    .option     = mpeg ## x ## _options,                \
+    .version    = LIBAVUTIL_VERSION_INT,                \
 };
 
 mpeg12_class(1)
@@ -955,8 +1029,8 @@ AVCodec ff_mpeg1video_encoder = {
     .encode2              = ff_MPV_encode_picture,
     .close                = ff_MPV_encode_end,
     .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
-    .pix_fmts             = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
-                                                        AV_PIX_FMT_NONE },
+    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
+                                                           AV_PIX_FMT_NONE },
     .capabilities         = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
     .priv_class           = &mpeg1_class,
@@ -971,9 +1045,9 @@ AVCodec ff_mpeg2video_encoder = {
     .encode2              = ff_MPV_encode_picture,
     .close                = ff_MPV_encode_end,
     .supported_framerates = ff_mpeg12_frame_rate_tab + 1,
-    .pix_fmts             = (const enum AVPixelFormat[]){
-        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE
-    },
+    .pix_fmts             = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
+                                                           AV_PIX_FMT_YUV422P,
+                                                           AV_PIX_FMT_NONE },
     .capabilities         = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
     .long_name            = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
     .priv_class           = &mpeg2_class,