mpeg: K&R formatting cosmetics

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

1 files changed, 335 insertions, 312 deletions

diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c
index 13d5b0375c..d020c9dd12 100644
--- a/libavformat/mpegenc.c
+++ b/libavformat/mpegenc.c
@@ -26,7 +26,9 @@
 #include "libavutil/log.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/opt.h"
+
 #include "libavcodec/put_bits.h"
+
 #include "avformat.h"
 #include "internal.h"
 #include "mpeg.h"
@@ -78,7 +80,7 @@ typedef struct {
     int is_dvd;
     int64_t last_scr; /* current system clock */
 
-    double vcd_padding_bitrate; //FIXME floats
+    double vcd_padding_bitrate; // FIXME floats
     int64_t vcd_padding_bytes_written;
 
     int preload;
@@ -89,8 +91,8 @@ extern AVOutputFormat ff_mpeg2dvd_muxer;
 extern AVOutputFormat ff_mpeg2svcd_muxer;
 extern AVOutputFormat ff_mpeg2vob_muxer;
 
-static int put_pack_header(AVFormatContext *ctx,
-                           uint8_t *buf, int64_t timestamp)
+static int put_pack_header(AVFormatContext *ctx, uint8_t *buf,
+                           int64_t timestamp)
 {
     MpegMuxContext *s = ctx->priv_data;
     PutBitContext pb;
@@ -98,21 +100,19 @@ static int put_pack_header(AVFormatContext *ctx,
     init_put_bits(&pb, buf, 128);
 
     put_bits32(&pb, PACK_START_CODE);
-    if (s->is_mpeg2) {
+    if (s->is_mpeg2)
         put_bits(&pb, 2, 0x1);
-    } else {
+    else
         put_bits(&pb, 4, 0x2);
-    }
-    put_bits(&pb, 3,  (uint32_t)((timestamp >> 30) & 0x07));
-    put_bits(&pb, 1, 1);
+    put_bits(&pb,  3, (uint32_t)((timestamp >> 30) & 0x07));
+    put_bits(&pb,  1, 1);
     put_bits(&pb, 15, (uint32_t)((timestamp >> 15) & 0x7fff));
-    put_bits(&pb, 1, 1);
-    put_bits(&pb, 15, (uint32_t)((timestamp      ) & 0x7fff));
-    put_bits(&pb, 1, 1);
-    if (s->is_mpeg2) {
+    put_bits(&pb,  1, 1);
+    put_bits(&pb, 15, (uint32_t)((timestamp)       & 0x7fff));
+    put_bits(&pb,  1, 1);
+    if (s->is_mpeg2)
         /* clock extension */
         put_bits(&pb, 9, 0);
-    }
     put_bits(&pb, 1, 1);
     put_bits(&pb, 22, s->mux_rate);
     put_bits(&pb, 1, 1);
@@ -125,7 +125,8 @@ static int put_pack_header(AVFormatContext *ctx,
     return put_bits_ptr(&pb) - pb.buf;
 }
 
-static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_stream_id)
+static int put_system_header(AVFormatContext *ctx, uint8_t *buf,
+                             int only_for_stream_id)
 {
     MpegMuxContext *s = ctx->priv_data;
     int size, i, private_stream_coded, id;
@@ -137,20 +138,22 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str
     put_bits(&pb, 16, 0);
     put_bits(&pb, 1, 1);
 
-    put_bits(&pb, 22, s->mux_rate); /* maximum bit rate of the multiplexed stream */
+    /* maximum bit rate of the multiplexed stream */
+    put_bits(&pb, 22, s->mux_rate);
     put_bits(&pb, 1, 1); /* marker */
-    if (s->is_vcd && only_for_stream_id==VIDEO_ID) {
-        /* This header applies only to the video stream (see VCD standard p. IV-7)*/
+    if (s->is_vcd && only_for_stream_id == VIDEO_ID) {
+        /* This header applies only to the video stream
+         * (see VCD standard p. IV-7) */
         put_bits(&pb, 6, 0);
     } else
         put_bits(&pb, 6, s->audio_bound);
 
     if (s->is_vcd) {
-        /* see VCD standard, p. IV-7*/
+        /* see VCD standard, p. IV-7 */
         put_bits(&pb, 1, 0);
         put_bits(&pb, 1, 1);
     } else {
-        put_bits(&pb, 1, 0); /* variable bitrate*/
+        put_bits(&pb, 1, 0); /* variable bitrate */
         put_bits(&pb, 1, 0); /* non constrainted bit stream */
     }
 
@@ -166,7 +169,8 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str
     put_bits(&pb, 1, 1); /* marker */
 
     if (s->is_vcd && (only_for_stream_id & 0xe0) == AUDIO_ID) {
-        /* This header applies only to the audio stream (see VCD standard p. IV-7)*/
+        /* This header applies only to the audio stream
+         * (see VCD standard p. IV-7) */
         put_bits(&pb, 5, 0);
     } else
         put_bits(&pb, 5, s->video_bound);
@@ -178,25 +182,27 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str
         put_bits(&pb, 8, 0xff); /* reserved byte */
 
     /* DVD-Video Stream_bound entries
-    id (0xB9) video, maximum P-STD for stream 0xE0. (P-STD_buffer_bound_scale = 1)
-    id (0xB8) audio, maximum P-STD for any MPEG audio (0xC0 to 0xC7) streams. If there are none set to 4096 (32x128). (P-STD_buffer_bound_scale = 0)
-    id (0xBD) private stream 1 (audio other than MPEG and subpictures). (P-STD_buffer_bound_scale = 1)
-    id (0xBF) private stream 2, NAV packs, set to 2x1024. */
+     * id (0xB9) video, maximum P-STD for stream 0xE0. (P-STD_buffer_bound_scale = 1)
+     * id (0xB8) audio, maximum P-STD for any MPEG audio (0xC0 to 0xC7) streams. If there are none set to 4096 (32x128). (P-STD_buffer_bound_scale = 0)
+     * id (0xBD) private stream 1 (audio other than MPEG and subpictures). (P-STD_buffer_bound_scale = 1)
+     * id (0xBF) private stream 2, NAV packs, set to 2x1024. */
     if (s->is_dvd) {
 
         int P_STD_max_video = 0;
         int P_STD_max_mpeg_audio = 0;
         int P_STD_max_mpeg_PS1 = 0;
 
-        for(i=0;i<ctx->nb_streams;i++) {
+        for (i = 0; i < ctx->nb_streams; i++) {
             StreamInfo *stream = ctx->streams[i]->priv_data;
 
             id = stream->id;
             if (id == 0xbd && stream->max_buffer_size > P_STD_max_mpeg_PS1) {
                 P_STD_max_mpeg_PS1 = stream->max_buffer_size;
-            } else if (id >= 0xc0 && id <= 0xc7 && stream->max_buffer_size > P_STD_max_mpeg_audio) {
+            } else if (id >= 0xc0 && id <= 0xc7 &&
+                       stream->max_buffer_size > P_STD_max_mpeg_audio) {
                 P_STD_max_mpeg_audio = stream->max_buffer_size;
-            } else if (id == 0xe0 && stream->max_buffer_size > P_STD_max_video) {
+            } else if (id == 0xe0 &&
+                       stream->max_buffer_size > P_STD_max_video) {
                 P_STD_max_video = stream->max_buffer_size;
             }
         }
@@ -226,20 +232,17 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str
         put_bits(&pb, 2, 3);
         put_bits(&pb, 1, 1);
         put_bits(&pb, 13, 2);
-    }
-    else {
+    } else {
         /* audio stream info */
         private_stream_coded = 0;
-        for(i=0;i<ctx->nb_streams;i++) {
+        for (i = 0; i < ctx->nb_streams; i++) {
             StreamInfo *stream = ctx->streams[i]->priv_data;
 
-
             /* For VCDs, only include the stream info for the stream
-            that the pack which contains this system belongs to.
-            (see VCD standard p. IV-7) */
-            if ( !s->is_vcd || stream->id==only_for_stream_id
-                || only_for_stream_id==0) {
-
+             * that the pack which contains this system belongs to.
+             * (see VCD standard p. IV-7) */
+            if (!s->is_vcd || stream->id == only_for_stream_id ||
+                only_for_stream_id == 0) {
                 id = stream->id;
                 if (id < 0xc0) {
                     /* special case for private streams (AC-3 uses that) */
@@ -248,7 +251,7 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str
                     private_stream_coded = 1;
                     id = 0xbd;
                 }
-                put_bits(&pb, 8, id); /* stream ID */
+                put_bits(&pb, 8, id);         /* stream ID */
                 put_bits(&pb, 2, 3);
                 if (id < 0xe0) {
                     /* audio */
@@ -279,11 +282,11 @@ static int get_system_header_size(AVFormatContext *ctx)
     MpegMuxContext *s = ctx->priv_data;
 
     if (s->is_dvd)
-       return 18; // DVD-Video system headers are 18 bytes fixed length.
+        return 18; // DVD-Video system headers are 18 bytes fixed length.
 
     buf_index = 12;
     private_stream_coded = 0;
-    for(i=0;i<ctx->nb_streams;i++) {
+    for (i = 0; i < ctx->nb_streams; i++) {
         stream = ctx->streams[i]->priv_data;
         if (stream->id < 0xc0) {
             if (private_stream_coded)
@@ -305,14 +308,14 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
     int video_bitrate;
 
     s->packet_number = 0;
-    s->is_vcd =    (CONFIG_MPEG1VCD_MUXER  && ctx->oformat == &ff_mpeg1vcd_muxer);
-    s->is_svcd =   (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer);
+    s->is_vcd   =  (CONFIG_MPEG1VCD_MUXER  && ctx->oformat == &ff_mpeg1vcd_muxer);
+    s->is_svcd  =  (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer);
     s->is_mpeg2 = ((CONFIG_MPEG2VOB_MUXER  && ctx->oformat == &ff_mpeg2vob_muxer) ||
                    (CONFIG_MPEG2DVD_MUXER  && ctx->oformat == &ff_mpeg2dvd_muxer) ||
                    (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer));
-    s->is_dvd =    (CONFIG_MPEG2DVD_MUXER  && ctx->oformat == &ff_mpeg2dvd_muxer);
+    s->is_dvd   =  (CONFIG_MPEG2DVD_MUXER  && ctx->oformat == &ff_mpeg2dvd_muxer);
 
-    if(ctx->packet_size) {
+    if (ctx->packet_size) {
         if (ctx->packet_size < 20 || ctx->packet_size > (1 << 23) + 10) {
             av_log(ctx, AV_LOG_ERROR, "Invalid packet size %d\n",
                    ctx->packet_size);
@@ -321,22 +324,24 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
         s->packet_size = ctx->packet_size;
     } else
         s->packet_size = 2048;
-    if (ctx->max_delay < 0) /* Not set by the caller */
+    if (ctx->max_delay < 0)     /* Not set by the caller */
         ctx->max_delay = 0;
 
     s->vcd_padding_bytes_written = 0;
-    s->vcd_padding_bitrate=0;
+    s->vcd_padding_bitrate       = 0;
 
     s->audio_bound = 0;
     s->video_bound = 0;
-    mpa_id = AUDIO_ID;
-    ac3_id = AC3_ID;
-    dts_id = DTS_ID;
-    mpv_id = VIDEO_ID;
-    mps_id = SUB_ID;
+
+    mpa_id  = AUDIO_ID;
+    ac3_id  = AC3_ID;
+    dts_id  = DTS_ID;
+    mpv_id  = VIDEO_ID;
+    mps_id  = SUB_ID;
     lpcm_id = LPCM_ID;
-    for(i=0;i<ctx->nb_streams;i++) {
-        st = ctx->streams[i];
+
+    for (i = 0; i < ctx->nb_streams; i++) {
+        st     = ctx->streams[i];
         stream = av_mallocz(sizeof(StreamInfo));
         if (!stream)
             goto fail;
@@ -344,15 +349,15 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
 
         avpriv_set_pts_info(st, 64, 1, 90000);
 
-        switch(st->codec->codec_type) {
+        switch (st->codec->codec_type) {
         case AVMEDIA_TYPE_AUDIO:
-            if        (st->codec->codec_id == AV_CODEC_ID_AC3) {
+            if (st->codec->codec_id == AV_CODEC_ID_AC3) {
                 stream->id = ac3_id++;
             } else if (st->codec->codec_id == AV_CODEC_ID_DTS) {
                 stream->id = dts_id++;
             } else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
                 stream->id = lpcm_id++;
-                for(j = 0; j < 4; j++) {
+                for (j = 0; j < 4; j++) {
                     if (lpcm_freq_tab[j] == st->codec->sample_rate)
                         break;
                 }
@@ -363,66 +368,68 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
                 stream->lpcm_header[0] = 0x0c;
                 stream->lpcm_header[1] = (st->codec->channels - 1) | (j << 4);
                 stream->lpcm_header[2] = 0x80;
-                stream->lpcm_align = st->codec->channels * 2;
+                stream->lpcm_align     = st->codec->channels * 2;
             } else {
                 stream->id = mpa_id++;
             }
 
             /* This value HAS to be used for VCD (see VCD standard, p. IV-7).
-               Right now it is also used for everything else.*/
+             * Right now it is also used for everything else. */
             stream->max_buffer_size = 4 * 1024;
             s->audio_bound++;
             break;
         case AVMEDIA_TYPE_VIDEO:
             stream->id = mpv_id++;
             if (st->codec->rc_buffer_size)
-                stream->max_buffer_size = 6*1024 + st->codec->rc_buffer_size/8;
+                stream->max_buffer_size = 6 * 1024 + st->codec->rc_buffer_size / 8;
             else {
-                av_log(ctx, AV_LOG_WARNING, "VBV buffer size not set, muxing may fail\n");
-                stream->max_buffer_size = 230*1024; //FIXME this is probably too small as default
+                av_log(ctx, AV_LOG_WARNING,
+                       "VBV buffer size not set, muxing may fail\n");
+                // FIXME: this is probably too small as default
+                stream->max_buffer_size = 230 * 1024;
             }
             s->video_bound++;
             break;
         case AVMEDIA_TYPE_SUBTITLE:
-            stream->id = mps_id++;
+            stream->id              = mps_id++;
             stream->max_buffer_size = 16 * 1024;
             break;
         default:
             return -1;
         }
-        stream->fifo= av_fifo_alloc(16);
+        stream->fifo = av_fifo_alloc(16);
         if (!stream->fifo)
             goto fail;
     }
-    bitrate = 0;
+    bitrate       = 0;
     audio_bitrate = 0;
     video_bitrate = 0;
-    for(i=0;i<ctx->nb_streams;i++) {
+    for (i = 0; i < ctx->nb_streams; i++) {
         int codec_rate;
-        st = ctx->streams[i];
-        stream = (StreamInfo*) st->priv_data;
+        st     = ctx->streams[i];
+        stream = (StreamInfo *)st->priv_data;
 
-        if(st->codec->rc_max_rate || stream->id==VIDEO_ID)
-            codec_rate= st->codec->rc_max_rate;
+        if (st->codec->rc_max_rate || stream->id == VIDEO_ID)
+            codec_rate = st->codec->rc_max_rate;
         else
-            codec_rate= st->codec->bit_rate;
+            codec_rate = st->codec->bit_rate;
 
-        if(!codec_rate)
-            codec_rate= (1<<21)*8*50/ctx->nb_streams;
+        if (!codec_rate)
+            codec_rate = (1 << 21) * 8 * 50 / ctx->nb_streams;
 
         bitrate += codec_rate;
 
         if ((stream->id & 0xe0) == AUDIO_ID)
             audio_bitrate += codec_rate;
-        else if (stream->id==VIDEO_ID)
+        else if (stream->id == VIDEO_ID)
             video_bitrate += codec_rate;
     }
 
     if (!s->mux_rate) {
         /* we increase slightly the bitrate to take into account the
-           headers. XXX: compute it exactly */
-        bitrate += bitrate / 20;
-        bitrate += 10000;
+         * headers. XXX: compute it exactly */
+        bitrate    += bitrate / 20;
+        bitrate    += 10000;
         s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50);
     }
 
@@ -430,23 +437,23 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
         double overhead_rate;
 
         /* The VCD standard mandates that the mux_rate field is 3528
-           (see standard p. IV-6).
-           The value is actually "wrong", i.e. if you calculate
-           it using the normal formula and the 75 sectors per second transfer
-           rate you get a different value because the real pack size is 2324,
-           not 2352. But the standard explicitly specifies that the mux_rate
-           field in the header must have this value.*/
-//        s->mux_rate=2352 * 75 / 50;    /* = 3528*/
+         * (see standard p. IV-6).
+         * The value is actually "wrong", i.e. if you calculate
+         * it using the normal formula and the 75 sectors per second transfer
+         * rate you get a different value because the real pack size is 2324,
+         * not 2352. But the standard explicitly specifies that the mux_rate
+         * field in the header must have this value. */
+        // s->mux_rate = 2352 * 75 / 50;    /* = 3528 */
 
         /* The VCD standard states that the muxed stream must be
-           exactly 75 packs / second (the data rate of a single speed cdrom).
-           Since the video bitrate (probably 1150000 bits/sec) will be below
-           the theoretical maximum we have to add some padding packets
-           to make up for the lower data rate.
-           (cf. VCD standard p. IV-6 )*/
+         * exactly 75 packs / second (the data rate of a single speed cdrom).
+         * Since the video bitrate (probably 1150000 bits/sec) will be below
+         * the theoretical maximum we have to add some padding packets
+         * to make up for the lower data rate.
+         * (cf. VCD standard p. IV-6 ) */
 
         /* Add the header overhead to the data rate.
-           2279 data bytes per audio pack, 2294 data bytes per video pack*/
+         * 2279 data bytes per audio pack, 2294 data bytes per video pack */
         overhead_rate  = ((audio_bitrate / 8.0) / 2279) * (2324 - 2279);
         overhead_rate += ((video_bitrate / 8.0) / 2294) * (2324 - 2294);
         overhead_rate *= 8;
@@ -464,70 +471,67 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
 
     /* the above seems to make pack_header_freq zero sometimes */
     if (s->pack_header_freq == 0)
-       s->pack_header_freq = 1;
+        s->pack_header_freq = 1;
 
     if (s->is_mpeg2)
         /* every 200 packets. Need to look at the spec.  */
         s->system_header_freq = s->pack_header_freq * 40;
     else if (s->is_vcd)
         /* the standard mandates that there are only two system headers
-           in the whole file: one in the first packet of each stream.
-           (see standard p. IV-7 and IV-8) */
+         * in the whole file: one in the first packet of each stream.
+         * (see standard p. IV-7 and IV-8) */
         s->system_header_freq = 0x7fffffff;
     else
         s->system_header_freq = s->pack_header_freq * 5;
 
-    for(i=0;i<ctx->nb_streams;i++) {
-        stream = ctx->streams[i]->priv_data;
+    for (i = 0; i < ctx->nb_streams; i++) {
+        stream                = ctx->streams[i]->priv_data;
         stream->packet_number = 0;
     }
     s->system_header_size = get_system_header_size(ctx);
-    s->last_scr = 0;
+    s->last_scr           = 0;
     return 0;
- fail:
-    for(i=0;i<ctx->nb_streams;i++) {
+
+fail:
+    for (i = 0; i < ctx->nb_streams; i++)
         av_free(ctx->streams[i]->priv_data);
-    }
     return AVERROR(ENOMEM);
 }
 
 static inline void put_timestamp(AVIOContext *pb, int id, int64_t timestamp)
 {
-    avio_w8(pb,
-             (id << 4) |
-             (((timestamp >> 30) & 0x07) << 1) |
-             1);
+    avio_w8(pb, (id << 4) |  (((timestamp >> 30) & 0x07)   << 1) | 1);
     avio_wb16(pb, (uint16_t)((((timestamp >> 15) & 0x7fff) << 1) | 1));
-    avio_wb16(pb, (uint16_t)((((timestamp      ) & 0x7fff) << 1) | 1));
+    avio_wb16(pb, (uint16_t)((((timestamp)       & 0x7fff) << 1) | 1));
 }
 
-
 /* return the number of padding bytes that should be inserted into
-   the multiplexed stream.*/
+ * the multiplexed stream. */
 static int get_vcd_padding_size(AVFormatContext *ctx, int64_t pts)
 {
     MpegMuxContext *s = ctx->priv_data;
     int pad_bytes = 0;
 
-    if (s->vcd_padding_bitrate > 0 && pts!=AV_NOPTS_VALUE)
-    {
+    if (s->vcd_padding_bitrate > 0 && pts != AV_NOPTS_VALUE) {
         int64_t full_pad_bytes;
 
-        full_pad_bytes = (int64_t)((s->vcd_padding_bitrate * (pts / 90000.0)) / 8.0); //FIXME this is wrong
-        pad_bytes = (int) (full_pad_bytes - s->vcd_padding_bytes_written);
+        // FIXME: this is wrong
+        full_pad_bytes =
+            (int64_t)((s->vcd_padding_bitrate * (pts / 90000.0)) / 8.0);
+        pad_bytes = (int)(full_pad_bytes - s->vcd_padding_bytes_written);
 
-        if (pad_bytes<0)
+        if (pad_bytes < 0)
             /* might happen if we have already padded to a later timestamp. This
-               can occur if another stream has already advanced further.*/
-            pad_bytes=0;
+             * can occur if another stream has already advanced further. */
+            pad_bytes = 0;
     }
 
     return pad_bytes;
 }
 
-
 /* Write an MPEG padding packet header. */
-static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb,int packet_bytes)
+static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb,
+                               int packet_bytes)
 {
     MpegMuxContext *s = ctx->priv_data;
     int i;
@@ -540,19 +544,20 @@ static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb,int packet_
     } else
         packet_bytes -= 6;
 
-    for(i=0;i<packet_bytes;i++)
+    for (i = 0; i < packet_bytes; i++)
         avio_w8(pb, 0xff);
 }
 
-static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len){
-    int nb_frames=0;
-    PacketDesc *pkt_desc= stream->premux_packet;
+static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len)
+{
+    int nb_frames        = 0;
+    PacketDesc *pkt_desc = stream->premux_packet;
 
-    while(len>0){
-        if(pkt_desc->size == pkt_desc->unwritten_size)
+    while (len > 0) {
+        if (pkt_desc->size == pkt_desc->unwritten_size)
             nb_frames++;
-        len -= pkt_desc->unwritten_size;
-        pkt_desc= pkt_desc->next;
+        len     -= pkt_desc->unwritten_size;
+        pkt_desc = pkt_desc->next;
     }
 
     return nb_frames;
@@ -560,9 +565,9 @@ static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len){
 
 /* flush the packet on stream stream_index */
 static int flush_packet(AVFormatContext *ctx, int stream_index,
-                         int64_t pts, int64_t dts, int64_t scr, int trailer_size)
+                        int64_t pts, int64_t dts, int64_t scr, int trailer_size)
 {
-    MpegMuxContext *s = ctx->priv_data;
+    MpegMuxContext *s  = ctx->priv_data;
     StreamInfo *stream = ctx->streams[stream_index]->priv_data;
     uint8_t *buf_ptr;
     int size, payload_size, startcode, id, stuffing_size, i, header_len;
@@ -571,7 +576,8 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
     int zero_trail_bytes = 0;
     int pad_packet_bytes = 0;
     int pes_flags;
-    int general_pack = 0;  /*"general" pack without data specific to one stream?*/
+    /* "general" pack without data specific to one stream? */
+    int general_pack = 0;
     int nb_frames;
 
     id = stream->id;
@@ -582,21 +588,21 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
 
     if ((s->packet_number % s->pack_header_freq) == 0 || s->last_scr != scr) {
         /* output pack and systems header if needed */
-        size = put_pack_header(ctx, buf_ptr, scr);
-        buf_ptr += size;
-        s->last_scr= scr;
+        size        = put_pack_header(ctx, buf_ptr, scr);
+        buf_ptr    += size;
+        s->last_scr = scr;
 
         if (s->is_vcd) {
             /* there is exactly one system header for each stream in a VCD MPEG,
-               One in the very first video packet and one in the very first
-               audio packet (see VCD standard p. IV-7 and IV-8).*/
+             * One in the very first video packet and one in the very first
+             * audio packet (see VCD standard p. IV-7 and IV-8). */
 
-            if (stream->packet_number==0) {
-                size = put_system_header(ctx, buf_ptr, id);
+            if (stream->packet_number == 0) {
+                size     = put_system_header(ctx, buf_ptr, id);
                 buf_ptr += size;
             }
         } else if (s->is_dvd) {
-            if (stream->align_iframe || s->packet_number == 0){
+            if (stream->align_iframe || s->packet_number == 0) {
                 int PES_bytes_to_fill = s->packet_size - size - 10;
 
                 if (pts != AV_NOPTS_VALUE) {
@@ -607,20 +613,20 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
                 }
 
                 if (stream->bytes_to_iframe == 0 || s->packet_number == 0) {
-                    size = put_system_header(ctx, buf_ptr, 0);
+                    size     = put_system_header(ctx, buf_ptr, 0);
                     buf_ptr += size;
-                    size = buf_ptr - buffer;
+                    size     = buf_ptr - buffer;
                     avio_write(ctx->pb, buffer, size);
 
                     avio_wb32(ctx->pb, PRIVATE_STREAM_2);
-                    avio_wb16(ctx->pb, 0x03d4);         // length
-                    avio_w8(ctx->pb, 0x00);           // substream ID, 00=PCI
+                    avio_wb16(ctx->pb, 0x03d4);     // length
+                    avio_w8(ctx->pb, 0x00);         // substream ID, 00=PCI
                     for (i = 0; i < 979; i++)
                         avio_w8(ctx->pb, 0x00);
 
                     avio_wb32(ctx->pb, PRIVATE_STREAM_2);
-                    avio_wb16(ctx->pb, 0x03fa);         // length
-                    avio_w8(ctx->pb, 0x01);           // substream ID, 01=DSI
+                    avio_wb16(ctx->pb, 0x03fa);     // length
+                    avio_w8(ctx->pb, 0x01);         // substream ID, 01=DSI
                     for (i = 0; i < 1017; i++)
                         avio_w8(ctx->pb, 0x00);
 
@@ -628,18 +634,21 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
                     buf_ptr = buffer;
                     s->packet_number++;
                     stream->align_iframe = 0;
-                    scr += s->packet_size*90000LL / (s->mux_rate*50LL); //FIXME rounding and first few bytes of each packet
-                    size = put_pack_header(ctx, buf_ptr, scr);
-                    s->last_scr= scr;
-                    buf_ptr += size;
+                    // FIXME: rounding and first few bytes of each packet
+                    scr        += s->packet_size * 90000LL /
+                                  (s->mux_rate * 50LL);
+                    size        = put_pack_header(ctx, buf_ptr, scr);
+                    s->last_scr = scr;
+                    buf_ptr    += size;
                     /* GOP Start */
                 } else if (stream->bytes_to_iframe < PES_bytes_to_fill) {
-                    pad_packet_bytes = PES_bytes_to_fill - stream->bytes_to_iframe;
+                    pad_packet_bytes = PES_bytes_to_fill -
+                                       stream->bytes_to_iframe;
                 }
             }
         } else {
             if ((s->packet_number % s->system_header_freq) == 0) {
-                size = put_system_header(ctx, buf_ptr, 0);
+                size     = put_system_header(ctx, buf_ptr, 0);
                 buf_ptr += size;
             }
         }
@@ -651,33 +660,33 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
 
     if (s->is_vcd && (id & 0xe0) == AUDIO_ID)
         /* The VCD standard demands that 20 zero bytes follow
-           each audio pack (see standard p. IV-8).*/
+         * each audio pack (see standard p. IV-8). */
         zero_trail_bytes += 20;
 
-    if ((s->is_vcd && stream->packet_number==0)
-        || (s->is_svcd && s->packet_number==0)) {
+    if ((s->is_vcd && stream->packet_number == 0) ||
+        (s->is_svcd && s->packet_number == 0)) {
         /* for VCD the first pack of each stream contains only the pack header,
-           the system header and lots of padding (see VCD standard p. IV-6).
-           In the case of an audio pack, 20 zero bytes are also added at
-           the end.*/
+         * the system header and lots of padding (see VCD standard p. IV-6).
+         * In the case of an audio pack, 20 zero bytes are also added at
+         * the end. */
         /* For SVCD we fill the very first pack to increase compatibility with
-           some DVD players. Not mandated by the standard.*/
+         * some DVD players. Not mandated by the standard. */
         if (s->is_svcd)
-            general_pack = 1;    /* the system header refers to both streams and no stream data*/
+            /* the system header refers to both streams and no stream data */
+            general_pack = 1;
         pad_packet_bytes = packet_size - zero_trail_bytes;
     }
 
     packet_size -= pad_packet_bytes + zero_trail_bytes;
 
     if (packet_size > 0) {
-
         /* packet header size */
         packet_size -= 6;
 
         /* packet header */
         if (s->is_mpeg2) {
             header_len = 3;
-            if (stream->packet_number==0)
+            if (stream->packet_number == 0)
                 header_len += 3; /* PES extension */
             header_len += 1; /* obligatory stuffing byte */
         } else {
@@ -695,7 +704,7 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
 
         payload_size = packet_size - header_len;
         if (id < 0xc0) {
-            startcode = PRIVATE_STREAM_1;
+            startcode     = PRIVATE_STREAM_1;
             payload_size -= 1;
             if (id >= 0x40) {
                 payload_size -= 3;
@@ -709,33 +718,34 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
         stuffing_size = payload_size - av_fifo_size(stream->fifo);
 
         // first byte does not fit -> reset pts/dts + stuffing
-        if(payload_size <= trailer_size && pts != AV_NOPTS_VALUE){
-            int timestamp_len=0;
-            if(dts != pts)
+        if (payload_size <= trailer_size && pts != AV_NOPTS_VALUE) {
+            int timestamp_len = 0;
+            if (dts != pts)
                 timestamp_len += 5;
-            if(pts != AV_NOPTS_VALUE)
+            if (pts != AV_NOPTS_VALUE)
                 timestamp_len += s->is_mpeg2 ? 5 : 4;
-            pts=dts= AV_NOPTS_VALUE;
+            pts         =
+            dts         = AV_NOPTS_VALUE;
             header_len -= timestamp_len;
             if (s->is_dvd && stream->align_iframe) {
                 pad_packet_bytes += timestamp_len;
-                packet_size  -= timestamp_len;
+                packet_size      -= timestamp_len;
             } else {
                 payload_size += timestamp_len;
             }
             stuffing_size += timestamp_len;
-            if(payload_size > trailer_size)
+            if (payload_size > trailer_size)
                 stuffing_size += payload_size - trailer_size;
         }
 
-        if (pad_packet_bytes > 0 && pad_packet_bytes <= 7) { // can't use padding, so use stuffing
-            packet_size += pad_packet_bytes;
+        // can't use padding, so use stuffing
+        if (pad_packet_bytes > 0 && pad_packet_bytes <= 7) {
+            packet_size  += pad_packet_bytes;
             payload_size += pad_packet_bytes; // undo the previous adjustment
-            if (stuffing_size < 0) {
-                stuffing_size  = pad_packet_bytes;
-            } else {
+            if (stuffing_size < 0)
+                stuffing_size = pad_packet_bytes;
+            else
                 stuffing_size += pad_packet_bytes;
-            }
             pad_packet_bytes = 0;
         }
 
@@ -747,27 +757,27 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
                 stuffing_size += payload_size % stream->lpcm_align;
         }
 
-        if (stuffing_size > 16) {    /*<=16 for MPEG-1, <=32 for MPEG-2*/
+        if (stuffing_size > 16) {   /* <=16 for MPEG-1, <=32 for MPEG-2 */
             pad_packet_bytes += stuffing_size;
             packet_size      -= stuffing_size;
             payload_size     -= stuffing_size;
-            stuffing_size = 0;
+            stuffing_size     = 0;
         }
 
-        nb_frames= get_nb_frames(ctx, stream, payload_size - stuffing_size);
+        nb_frames = get_nb_frames(ctx, stream, payload_size - stuffing_size);
 
         avio_wb32(ctx->pb, startcode);
 
         avio_wb16(ctx->pb, packet_size);
 
         if (!s->is_mpeg2)
-            for(i=0;i<stuffing_size;i++)
+            for (i = 0; i < stuffing_size; i++)
                 avio_w8(ctx->pb, 0xff);
 
         if (s->is_mpeg2) {
             avio_w8(ctx->pb, 0x80); /* mpeg2 id */
 
-            pes_flags=0;
+            pes_flags = 0;
 
             if (pts != AV_NOPTS_VALUE) {
                 pes_flags |= 0x80;
@@ -776,30 +786,29 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
             }
 
             /* Both the MPEG-2 and the SVCD standards demand that the
-               P-STD_buffer_size field be included in the first packet of
-               every stream. (see SVCD standard p. 26 V.2.3.1 and V.2.3.2
-               and MPEG-2 standard 2.7.7) */
+             * P-STD_buffer_size field be included in the first packet of
+             * every stream. (see SVCD standard p. 26 V.2.3.1 and V.2.3.2
+             * and MPEG-2 standard 2.7.7) */
             if (stream->packet_number == 0)
                 pes_flags |= 0x01;
 
             avio_w8(ctx->pb, pes_flags); /* flags */
             avio_w8(ctx->pb, header_len - 3 + stuffing_size);
 
-            if (pes_flags & 0x80)  /*write pts*/
+            if (pes_flags & 0x80)  /* write pts */
                 put_timestamp(ctx->pb, (pes_flags & 0x40) ? 0x03 : 0x02, pts);
-            if (pes_flags & 0x40)  /*write dts*/
+            if (pes_flags & 0x40)  /* write dts */
                 put_timestamp(ctx->pb, 0x01, dts);
 
-            if (pes_flags & 0x01) {  /*write pes extension*/
+            if (pes_flags & 0x01) {  /* write pes extension */
                 avio_w8(ctx->pb, 0x10); /* flags */
 
                 /* P-STD buffer info */
                 if ((id & 0xe0) == AUDIO_ID)
-                    avio_wb16(ctx->pb, 0x4000 | stream->max_buffer_size/ 128);
+                    avio_wb16(ctx->pb, 0x4000 | stream->max_buffer_size / 128);
                 else
-                    avio_wb16(ctx->pb, 0x6000 | stream->max_buffer_size/1024);
+                    avio_wb16(ctx->pb, 0x6000 | stream->max_buffer_size / 1024);
             }
-
         } else {
             if (pts != AV_NOPTS_VALUE) {
                 if (dts != pts) {
@@ -815,10 +824,10 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
 
         if (s->is_mpeg2) {
             /* special stuffing byte that is always written
-               to prevent accidental generation of start codes. */
+             * to prevent accidental generation of start codes. */
             avio_w8(ctx->pb, 0xff);
 
-            for(i=0;i<stuffing_size;i++)
+            for (i = 0; i < stuffing_size; i++)
                 avio_w8(ctx->pb, 0xff);
         }
 
@@ -834,23 +843,24 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
             } else if (id >= 0x40) {
                 /* AC-3 */
                 avio_w8(ctx->pb, nb_frames);
-                avio_wb16(ctx->pb, trailer_size+1);
+                avio_wb16(ctx->pb, trailer_size + 1);
             }
         }
 
         /* output data */
         assert(payload_size - stuffing_size <= av_fifo_size(stream->fifo));
-        av_fifo_generic_read(stream->fifo, ctx->pb, payload_size - stuffing_size, &avio_write);
+        av_fifo_generic_read(stream->fifo, ctx->pb,
+                             payload_size - stuffing_size, &avio_write);
         stream->bytes_to_iframe -= payload_size - stuffing_size;
-    }else{
-        payload_size=
-        stuffing_size= 0;
+    } else {
+        payload_size  =
+        stuffing_size = 0;
     }
 
     if (pad_packet_bytes > 0)
-        put_padding_packet(ctx,ctx->pb, pad_packet_bytes);
+        put_padding_packet(ctx, ctx->pb, pad_packet_bytes);
 
-    for(i=0;i<zero_trail_bytes;i++)
+    for (i = 0; i < zero_trail_bytes; i++)
         avio_w8(ctx->pb, 0x00);
 
     avio_flush(ctx->pb);
@@ -858,8 +868,8 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
     s->packet_number++;
 
     /* only increase the stream packet number if this pack actually contains
-       something that is specific to this stream! I.e. a dedicated header
-       or some data.*/
+     * something that is specific to this stream! I.e. a dedicated header
+     * or some data. */
     if (!general_pack)
         stream->packet_number++;
 
@@ -869,15 +879,15 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
 static void put_vcd_padding_sector(AVFormatContext *ctx)
 {
     /* There are two ways to do this padding: writing a sector/pack
-       of 0 values, or writing an MPEG padding pack. Both seem to
-       work with most decoders, BUT the VCD standard only allows a 0-sector
-       (see standard p. IV-4, IV-5).
-       So a 0-sector it is...*/
+     * of 0 values, or writing an MPEG padding pack. Both seem to
+     * work with most decoders, BUT the VCD standard only allows a 0-sector
+     * (see standard p. IV-4, IV-5).
+     * So a 0-sector it is... */
 
     MpegMuxContext *s = ctx->priv_data;
     int i;
 
-    for(i=0;i<s->packet_size;i++)
+    for (i = 0; i < s->packet_size; i++)
         avio_w8(ctx->pb, 0);
 
     s->vcd_padding_bytes_written += s->packet_size;
@@ -885,33 +895,32 @@ static void put_vcd_padding_sector(AVFormatContext *ctx)
     avio_flush(ctx->pb);
 
     /* increasing the packet number is correct. The SCR of the following packs
-       is calculated from the packet_number and it has to include the padding
-       sector (it represents the sector index, not the MPEG pack index)
-       (see VCD standard p. IV-6)*/
+     * is calculated from the packet_number and it has to include the padding
+     * sector (it represents the sector index, not the MPEG pack index)
+     * (see VCD standard p. IV-6) */
     s->packet_number++;
 }
 
-static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr){
-//    MpegMuxContext *s = ctx->priv_data;
+static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr)
+{
     int i;
 
-    for(i=0; i<ctx->nb_streams; i++){
+    for (i = 0; i < ctx->nb_streams; i++) {
         AVStream *st = ctx->streams[i];
         StreamInfo *stream = st->priv_data;
         PacketDesc *pkt_desc;
 
-        while((pkt_desc= stream->predecode_packet)
-              && scr > pkt_desc->dts){ //FIXME > vs >=
-            if(stream->buffer_index < pkt_desc->size ||
-               stream->predecode_packet == stream->premux_packet){
+        while ((pkt_desc = stream->predecode_packet) &&
+               scr > pkt_desc->dts) { // FIXME: > vs >=
+            if (stream->buffer_index < pkt_desc->size ||
+                stream->predecode_packet == stream->premux_packet) {
                 av_log(ctx, AV_LOG_ERROR,
                        "buffer underflow i=%d bufi=%d size=%d\n",
                        i, stream->buffer_index, pkt_desc->size);
                 break;
             }
-            stream->buffer_index -= pkt_desc->size;
-
-            stream->predecode_packet= pkt_desc->next;
+            stream->buffer_index    -= pkt_desc->size;
+            stream->predecode_packet = pkt_desc->next;
             av_freep(&pkt_desc);
         }
     }
@@ -919,125 +928,133 @@ static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr){
     return 0;
 }
 
-static int output_packet(AVFormatContext *ctx, int flush){
+static int output_packet(AVFormatContext *ctx, int flush)
+{
     MpegMuxContext *s = ctx->priv_data;
     AVStream *st;
     StreamInfo *stream;
-    int i, avail_space=0, es_size, trailer_size;
-    int best_i= -1;
-    int best_score= INT_MIN;
-    int ignore_constraints=0;
-    int64_t scr= s->last_scr;
+    int i, avail_space = 0, es_size, trailer_size;
+    int best_i = -1;
+    int best_score = INT_MIN;
+    int ignore_constraints = 0;
+    int64_t scr = s->last_scr;
     PacketDesc *timestamp_packet;
-    const int64_t max_delay= av_rescale(ctx->max_delay, 90000, AV_TIME_BASE);
+    const int64_t max_delay = av_rescale(ctx->max_delay, 90000, AV_TIME_BASE);
 
 retry:
-    for(i=0; i<ctx->nb_streams; i++){
+    for (i = 0; i < ctx->nb_streams; i++) {
         AVStream *st = ctx->streams[i];
         StreamInfo *stream = st->priv_data;
-        const int avail_data=  av_fifo_size(stream->fifo);
-        const int space= stream->max_buffer_size - stream->buffer_index;
-        int rel_space= 1024*space / stream->max_buffer_size;
-        PacketDesc *next_pkt= stream->premux_packet;
+        const int avail_data = av_fifo_size(stream->fifo);
+        const int space = stream->max_buffer_size - stream->buffer_index;
+        int rel_space = 1024 * space / stream->max_buffer_size;
+        PacketDesc *next_pkt = stream->premux_packet;
 
         /* for subtitle, a single PES packet must be generated,
-           so we flush after every single subtitle packet */
-        if(s->packet_size > avail_data && !flush
-           && st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
+         * so we flush after every single subtitle packet */
+        if (s->packet_size > avail_data && !flush
+            && st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
             return 0;
-        if(avail_data==0)
+        if (avail_data == 0)
             continue;
-        assert(avail_data>0);
+        assert(avail_data > 0);
 
-        if(space < s->packet_size && !ignore_constraints)
+        if (space < s->packet_size && !ignore_constraints)
             continue;
 
-        if(next_pkt && next_pkt->dts - scr > max_delay)
+        if (next_pkt && next_pkt->dts - scr > max_delay)
             continue;
 
-        if(rel_space > best_score){
-            best_score= rel_space;
-            best_i = i;
-            avail_space= space;
+        if (rel_space > best_score) {
+            best_score  = rel_space;
+            best_i      = i;
+            avail_space = space;
         }
     }
 
-    if(best_i < 0){
-        int64_t best_dts= INT64_MAX;
+    if (best_i < 0) {
+        int64_t best_dts = INT64_MAX;
 
-        for(i=0; i<ctx->nb_streams; i++){
+        for (i = 0; i < ctx->nb_streams; i++) {
             AVStream *st = ctx->streams[i];
             StreamInfo *stream = st->priv_data;
-            PacketDesc *pkt_desc= stream->predecode_packet;
-            if(pkt_desc && pkt_desc->dts < best_dts)
-                best_dts= pkt_desc->dts;
+            PacketDesc *pkt_desc = stream->predecode_packet;
+            if (pkt_desc && pkt_desc->dts < best_dts)
+                best_dts = pkt_desc->dts;
         }
 
         av_dlog(ctx, "bumping scr, scr:%f, dts:%f\n",
                 scr / 90000.0, best_dts / 90000.0);
-        if(best_dts == INT64_MAX)
+        if (best_dts == INT64_MAX)
             return 0;
 
-        if(scr >= best_dts+1 && !ignore_constraints){
-            av_log(ctx, AV_LOG_ERROR, "packet too large, ignoring buffer limits to mux it\n");
-            ignore_constraints= 1;
+        if (scr >= best_dts + 1 && !ignore_constraints) {
+            av_log(ctx, AV_LOG_ERROR,
+                   "packet too large, ignoring buffer limits to mux it\n");
+            ignore_constraints = 1;
         }
-        scr= FFMAX(best_dts+1, scr);
-        if(remove_decoded_packets(ctx, scr) < 0)
+        scr = FFMAX(best_dts + 1, scr);
+        if (remove_decoded_packets(ctx, scr) < 0)
             return -1;
         goto retry;
     }
 
     assert(best_i >= 0);
 
-    st = ctx->streams[best_i];
+    st     = ctx->streams[best_i];
     stream = st->priv_data;
 
     assert(av_fifo_size(stream->fifo) > 0);
 
     assert(avail_space >= s->packet_size || ignore_constraints);
 
-    timestamp_packet= stream->premux_packet;
-    if(timestamp_packet->unwritten_size == timestamp_packet->size){
-        trailer_size= 0;
-    }else{
-        trailer_size= timestamp_packet->unwritten_size;
-        timestamp_packet= timestamp_packet->next;
+    timestamp_packet = stream->premux_packet;
+    if (timestamp_packet->unwritten_size == timestamp_packet->size) {
+        trailer_size = 0;
+    } else {
+        trailer_size     = timestamp_packet->unwritten_size;
+        timestamp_packet = timestamp_packet->next;
     }
 
-    if(timestamp_packet){
+    if (timestamp_packet) {
         av_dlog(ctx, "dts:%f pts:%f scr:%f stream:%d\n",
                 timestamp_packet->dts / 90000.0,
                 timestamp_packet->pts / 90000.0,
                 scr / 90000.0, best_i);
-        es_size= flush_packet(ctx, best_i, timestamp_packet->pts, timestamp_packet->dts, scr, trailer_size);
-    }else{
+        es_size = flush_packet(ctx, best_i, timestamp_packet->pts,
+                               timestamp_packet->dts, scr, trailer_size);
+    } else {
         assert(av_fifo_size(stream->fifo) == trailer_size);
-        es_size= flush_packet(ctx, best_i, AV_NOPTS_VALUE, AV_NOPTS_VALUE, scr, trailer_size);
+        es_size = flush_packet(ctx, best_i, AV_NOPTS_VALUE, AV_NOPTS_VALUE, scr,
+                               trailer_size);
     }
 
     if (s->is_vcd) {
         /* Write one or more padding sectors, if necessary, to reach
-           the constant overall bitrate.*/
+         * the constant overall bitrate. */
         int vcd_pad_bytes;
 
-        while((vcd_pad_bytes = get_vcd_padding_size(ctx,stream->premux_packet->pts) ) >= s->packet_size){ //FIXME pts cannot be correct here
+        // FIXME: pts cannot be correct here
+        while ((vcd_pad_bytes = get_vcd_padding_size(ctx, stream->premux_packet->pts)) >= s->packet_size) {
             put_vcd_padding_sector(ctx);
-            s->last_scr += s->packet_size*90000LL / (s->mux_rate*50LL); //FIXME rounding and first few bytes of each packet
+            // FIXME: rounding and first few bytes of each packet
+            s->last_scr += s->packet_size * 90000LL / (s->mux_rate * 50LL);
         }
     }
 
     stream->buffer_index += es_size;
-    s->last_scr += s->packet_size*90000LL / (s->mux_rate*50LL); //FIXME rounding and first few bytes of each packet
+    // FIXME: rounding and first few bytes of each packet
+    s->last_scr          += s->packet_size * 90000LL / (s->mux_rate * 50LL);
 
-    while(stream->premux_packet && stream->premux_packet->unwritten_size <= es_size){
-        es_size -= stream->premux_packet->unwritten_size;
-        stream->premux_packet= stream->premux_packet->next;
+    while (stream->premux_packet &&
+           stream->premux_packet->unwritten_size <= es_size) {
+        es_size              -= stream->premux_packet->unwritten_size;
+        stream->premux_packet = stream->premux_packet->next;
     }
-    if(es_size)
+    if (es_size)
         stream->premux_packet->unwritten_size -= es_size;
 
-    if(remove_decoded_packets(ctx, s->last_scr) < 0)
+    if (remove_decoded_packets(ctx, s->last_scr) < 0)
         return -1;
 
     return 1;
@@ -1045,27 +1062,29 @@ retry:
 
 static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
 {
+    int stream_index = pkt->stream_index;
+    int size         = pkt->size;
+    uint8_t *buf     = pkt->data;
     MpegMuxContext *s = ctx->priv_data;
-    int stream_index= pkt->stream_index;
-    int size= pkt->size;
-    uint8_t *buf= pkt->data;
-    AVStream *st = ctx->streams[stream_index];
+    AVStream *st      = ctx->streams[stream_index];
     StreamInfo *stream = st->priv_data;
     int64_t pts, dts;
     PacketDesc *pkt_desc;
     int preload;
-    const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (pkt->flags & AV_PKT_FLAG_KEY);
+    const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
+                          (pkt->flags & AV_PKT_FLAG_KEY);
 
     preload = av_rescale(s->preload, 90000, AV_TIME_BASE);
 
-    pts= pkt->pts;
-    dts= pkt->dts;
+    pts = pkt->pts;
+    dts = pkt->dts;
 
-    if(pts != AV_NOPTS_VALUE) pts += 2*preload;
-    if(dts != AV_NOPTS_VALUE){
-        if(!s->last_scr)
-            s->last_scr= dts + preload;
-        dts += 2*preload;
+    if (pts != AV_NOPTS_VALUE)
+        pts += 2 * preload;
+    if (dts != AV_NOPTS_VALUE) {
+        if (!s->last_scr)
+            s->last_scr = dts + preload;
+        dts += 2 * preload;
     }
 
     av_dlog(ctx, "dts:%f pts:%f flags:%d stream:%d nopts:%d\n",
@@ -1073,57 +1092,59 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
             pkt->stream_index, pts != AV_NOPTS_VALUE);
     if (!stream->premux_packet)
         stream->next_packet = &stream->premux_packet;
-    *stream->next_packet=
-    pkt_desc= av_mallocz(sizeof(PacketDesc));
-    pkt_desc->pts= pts;
-    pkt_desc->dts= dts;
-    pkt_desc->unwritten_size=
-    pkt_desc->size= size;
-    if(!stream->predecode_packet)
-        stream->predecode_packet= pkt_desc;
-    stream->next_packet= &pkt_desc->next;
+    *stream->next_packet     =
+    pkt_desc                 = av_mallocz(sizeof(PacketDesc));
+    pkt_desc->pts            = pts;
+    pkt_desc->dts            = dts;
+    pkt_desc->unwritten_size =
+    pkt_desc->size           = size;
+    if (!stream->predecode_packet)
+        stream->predecode_packet = pkt_desc;
+    stream->next_packet = &pkt_desc->next;
 
     if (av_fifo_realloc2(stream->fifo, av_fifo_size(stream->fifo) + size) < 0)
         return -1;
 
-    if (s->is_dvd){
-        if (is_iframe && (s->packet_number == 0 || (pts - stream->vobu_start_pts >= 36000))) { // min VOBU length 0.4 seconds (mpucoder)
+    if (s->is_dvd) {
+        // min VOBU length 0.4 seconds (mpucoder)
+        if (is_iframe &&
+            (s->packet_number == 0 ||
+             (pts - stream->vobu_start_pts >= 36000))) {
             stream->bytes_to_iframe = av_fifo_size(stream->fifo);
-            stream->align_iframe = 1;
-            stream->vobu_start_pts = pts;
+            stream->align_iframe    = 1;
+            stream->vobu_start_pts  = pts;
         }
     }
 
     av_fifo_generic_write(stream->fifo, buf, size, NULL);
 
-    for(;;){
-        int ret= output_packet(ctx, 0);
-        if(ret<=0)
+    for (;;) {
+        int ret = output_packet(ctx, 0);
+        if (ret <= 0)
             return ret;
     }
 }
 
 static int mpeg_mux_end(AVFormatContext *ctx)
 {
-//    MpegMuxContext *s = ctx->priv_data;
     StreamInfo *stream;
     int i;
 
-    for(;;){
-        int ret= output_packet(ctx, 1);
-        if(ret<0)
+    for (;;) {
+        int ret = output_packet(ctx, 1);
+        if (ret < 0)
             return ret;
-        else if(ret==0)
+        else if (ret == 0)
             break;
     }
 
     /* End header according to MPEG1 systems standard. We do not write
-       it as it is usually not needed by decoders and because it
-       complicates MPEG stream concatenation. */
-    //avio_wb32(ctx->pb, ISO_11172_END_CODE);
-    //avio_flush(ctx->pb);
+     * it as it is usually not needed by decoders and because it
+     * complicates MPEG stream concatenation. */
+    // avio_wb32(ctx->pb, ISO_11172_END_CODE);
+    // avio_flush(ctx->pb);
 
-    for(i=0;i<ctx->nb_streams;i++) {
+    for (i = 0; i < ctx->nb_streams; i++) {
         stream = ctx->streams[i]->priv_data;
 
         assert(av_fifo_size(stream->fifo) == 0);
@@ -1135,17 +1156,17 @@ static int mpeg_mux_end(AVFormatContext *ctx)
 #define OFFSET(x) offsetof(MpegMuxContext, x)
 #define E AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
-    { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
-    { "preload", "Initial demux-decode delay in microseconds.", OFFSET(preload),  AV_OPT_TYPE_INT, {.i64 = 500000}, 0, INT_MAX, E},
+    { "muxrate", NULL,                                          OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 =      0 }, 0, INT_MAX, E },
+    { "preload", "Initial demux-decode delay in microseconds.", OFFSET(preload),  AV_OPT_TYPE_INT, { .i64 = 500000 }, 0, INT_MAX, E },
     { NULL },
 };
 
-#define MPEGENC_CLASS(flavor)\
-static const AVClass flavor ## _class = {\
-    .class_name = #flavor " muxer",\
-    .item_name  = av_default_item_name,\
-    .version    = LIBAVUTIL_VERSION_INT,\
-    .option     = options,\
+#define MPEGENC_CLASS(flavor)                   \
+static const AVClass flavor ## _class = {       \
+    .class_name = #flavor " muxer",             \
+    .item_name  = av_default_item_name,         \
+    .version    = LIBAVUTIL_VERSION_INT,        \
+    .option     = options,                      \
 };
 
 #if CONFIG_MPEG1SYSTEM_MUXER
@@ -1164,6 +1185,7 @@ AVOutputFormat ff_mpeg1system_muxer = {
     .priv_class        = &mpeg_class,
 };
 #endif
+
 #if CONFIG_MPEG1VCD_MUXER
 MPEGENC_CLASS(vcd)
 AVOutputFormat ff_mpeg1vcd_muxer = {
@@ -1179,6 +1201,7 @@ AVOutputFormat ff_mpeg1vcd_muxer = {
     .priv_class        = &vcd_class,
 };
 #endif
+
 #if CONFIG_MPEG2VOB_MUXER
 MPEGENC_CLASS(vob)
 AVOutputFormat ff_mpeg2vob_muxer = {