Merge remote-tracking branch 'qatar/master'

* qatar/master:
  flv: add support for G.711
  doc: git: Add checklist with test steps to perform before pushing
  flvenc: K&R formatting cosmetics
  movenc: Add channel layouts for PCM.

Conflicts:
	libavformat/flvenc.c
	tests/ref/fate/acodec-pcm-s16be
	tests/ref/fate/acodec-pcm-s24be
	tests/ref/fate/acodec-pcm-s32be
	tests/ref/fate/acodec-pcm-s8

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 153 insertions, 133 deletions

diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index c636c66bad..f6933a7b35 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -20,43 +20,45 @@
  */
 
 #include "libavutil/intreadwrite.h"
+#include "libavutil/dict.h"
 #include "libavutil/intfloat.h"
+#include "libavutil/avassert.h"
+#include "avc.h"
 #include "avformat.h"
 #include "flv.h"
 #include "internal.h"
-#include "avc.h"
 #include "metadata.h"
-#include "libavutil/dict.h"
-#include "libavutil/avassert.h"
 
 
 static const AVCodecTag flv_video_codec_ids[] = {
-    {CODEC_ID_FLV1,    FLV_CODECID_H263  },
-    {CODEC_ID_H263,    FLV_CODECID_REALH263},
-    {CODEC_ID_MPEG4,   FLV_CODECID_MPEG4 },
-    {CODEC_ID_FLASHSV, FLV_CODECID_SCREEN},
-    {CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2},
-    {CODEC_ID_VP6F,    FLV_CODECID_VP6   },
-    {CODEC_ID_VP6,     FLV_CODECID_VP6   },
-    {CODEC_ID_VP6A,    FLV_CODECID_VP6A  },
-    {CODEC_ID_H264,    FLV_CODECID_H264  },
-    {CODEC_ID_NONE,    0}
+    { CODEC_ID_FLV1,     FLV_CODECID_H263 },
+    { CODEC_ID_H263,     FLV_CODECID_REALH263 },
+    { CODEC_ID_MPEG4,    FLV_CODECID_MPEG4 },
+    { CODEC_ID_FLASHSV,  FLV_CODECID_SCREEN },
+    { CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2 },
+    { CODEC_ID_VP6F,     FLV_CODECID_VP6 },
+    { CODEC_ID_VP6,      FLV_CODECID_VP6 },
+    { CODEC_ID_VP6A,     FLV_CODECID_VP6A },
+    { CODEC_ID_H264,     FLV_CODECID_H264 },
+    { CODEC_ID_NONE,     0 }
 };
 
 static const AVCodecTag flv_audio_codec_ids[] = {
-    {CODEC_ID_MP3,       FLV_CODECID_MP3    >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_PCM_U8,    FLV_CODECID_PCM    >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_PCM_S16BE, FLV_CODECID_PCM    >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM  >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_AAC,       FLV_CODECID_AAC    >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_SPEEX,     FLV_CODECID_SPEEX  >> FLV_AUDIO_CODECID_OFFSET},
-    {CODEC_ID_NONE,      0}
+    { CODEC_ID_MP3,        FLV_CODECID_MP3        >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_PCM_U8,     FLV_CODECID_PCM        >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_PCM_S16BE,  FLV_CODECID_PCM        >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_PCM_S16LE,  FLV_CODECID_PCM_LE     >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_ADPCM_SWF,  FLV_CODECID_ADPCM      >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_AAC,        FLV_CODECID_AAC        >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_PCM_MULAW,  FLV_CODECID_PCM_MULAW  >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_PCM_ALAW,   FLV_CODECID_PCM_ALAW   >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_SPEEX,      FLV_CODECID_SPEEX      >> FLV_AUDIO_CODECID_OFFSET },
+    { CODEC_ID_NONE,       0 }
 };
 
 typedef struct FLVContext {
-    int reserved;
+    int     reserved;
     int64_t duration_offset;
     int64_t filesize_offset;
     int64_t duration;
@@ -69,13 +71,16 @@ typedef struct FLVStreamContext {
 
 static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc)
 {
-    int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
+    int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT
+                                                   : FLV_SAMPLESSIZE_8BIT;
 
     if (enc->codec_id == CODEC_ID_AAC) // specs force these parameters
-        return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
+        return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ |
+               FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
     else if (enc->codec_id == CODEC_ID_SPEEX) {
         if (enc->sample_rate != 16000) {
-            av_log(s, AV_LOG_ERROR, "flv only supports wideband (16kHz) Speex audio\n");
+            av_log(s, AV_LOG_ERROR,
+                   "flv only supports wideband (16kHz) Speex audio\n");
             return -1;
         }
         if (enc->channels != 1) {
@@ -84,34 +89,35 @@ static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc)
         }
         return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT;
     } else {
-    switch (enc->sample_rate) {
-        case    44100:
+        switch (enc->sample_rate) {
+        case 44100:
             flags |= FLV_SAMPLERATE_44100HZ;
             break;
-        case    22050:
+        case 22050:
             flags |= FLV_SAMPLERATE_22050HZ;
             break;
-        case    11025:
+        case 11025:
             flags |= FLV_SAMPLERATE_11025HZ;
             break;
-        case    16000: //nellymoser only
-        case     8000: //nellymoser only
-        case     5512: //not mp3
-            if(enc->codec_id != CODEC_ID_MP3){
+        case 16000: // nellymoser only
+        case  8000: // nellymoser only
+        case  5512: // not MP3
+            if (enc->codec_id != CODEC_ID_MP3) {
                 flags |= FLV_SAMPLERATE_SPECIAL;
                 break;
             }
         default:
-            av_log(s, AV_LOG_ERROR, "flv does not support that sample rate, choose from (44100, 22050, 11025).\n");
+            av_log(s, AV_LOG_ERROR,
+                   "flv does not support that sample rate, "
+                   "choose from (44100, 22050, 11025).\n");
             return -1;
-    }
+        }
     }
 
-    if (enc->channels > 1) {
+    if (enc->channels > 1)
         flags |= FLV_STEREO;
-    }
 
-    switch(enc->codec_id){
+    switch (enc->codec_id) {
     case CODEC_ID_MP3:
         flags |= FLV_CODECID_MP3    | FLV_SAMPLESSIZE_16BIT;
         break;
@@ -125,19 +131,24 @@ static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc)
         flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT;
         break;
     case CODEC_ID_ADPCM_SWF:
-        flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT;
+        flags |= FLV_CODECID_ADPCM  | FLV_SAMPLESSIZE_16BIT;
         break;
     case CODEC_ID_NELLYMOSER:
-        if (enc->sample_rate == 8000) {
-            flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
-        } else if (enc->sample_rate == 16000) {
+        if (enc->sample_rate == 8000)
+            flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO  | FLV_SAMPLESSIZE_16BIT;
+        else if (enc->sample_rate == 16000)
             flags |= FLV_CODECID_NELLYMOSER_16KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
-        } else {
-            flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
-        }
+        else
+            flags |= FLV_CODECID_NELLYMOSER            | FLV_SAMPLESSIZE_16BIT;
+        break;
+    case CODEC_ID_PCM_MULAW:
+        flags = FLV_CODECID_PCM_MULAW | FLV_SAMPLERATE_SPECIAL | FLV_SAMPLESSIZE_16BIT;
+        break;
+    case CODEC_ID_PCM_ALAW:
+        flags = FLV_CODECID_PCM_ALAW  | FLV_SAMPLERATE_SPECIAL | FLV_SAMPLESSIZE_16BIT;
         break;
     case 0:
-        flags |= enc->codec_tag<<4;
+        flags |= enc->codec_tag << 4;
         break;
     default:
         av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n");
@@ -154,16 +165,17 @@ static void put_amf_string(AVIOContext *pb, const char *str)
     avio_write(pb, str, len);
 }
 
-static void put_avc_eos_tag(AVIOContext *pb, unsigned ts) {
+static void put_avc_eos_tag(AVIOContext *pb, unsigned ts)
+{
     avio_w8(pb, FLV_TAG_TYPE_VIDEO);
-    avio_wb24(pb, 5);  /* Tag Data Size */
-    avio_wb24(pb, ts);  /* lower 24 bits of timestamp in ms*/
-    avio_w8(pb, (ts >> 24) & 0x7F);  /* MSB of ts in ms*/
-    avio_wb24(pb, 0);  /* StreamId = 0 */
-    avio_w8(pb, 23);  /* ub[4] FrameType = 1, ub[4] CodecId = 7 */
-    avio_w8(pb, 2);  /* AVC end of sequence */
-    avio_wb24(pb, 0);  /* Always 0 for AVC EOS. */
-    avio_wb32(pb, 16);  /* Size of FLV tag */
+    avio_wb24(pb, 5);               /* Tag Data Size */
+    avio_wb24(pb, ts);              /* lower 24 bits of timestamp in ms */
+    avio_w8(pb, (ts >> 24) & 0x7F); /* MSB of ts in ms */
+    avio_wb24(pb, 0);               /* StreamId = 0 */
+    avio_w8(pb, 23);                /* ub[4] FrameType = 1, ub[4] CodecId = 7 */
+    avio_w8(pb, 2);                 /* AVC end of sequence */
+    avio_wb24(pb, 0);               /* Always 0 for AVC EOS. */
+    avio_wb32(pb, 16);              /* Size of FLV tag */
 }
 
 static void put_amf_double(AVIOContext *pb, double d)
@@ -172,7 +184,8 @@ static void put_amf_double(AVIOContext *pb, double d)
     avio_wb64(pb, av_double2int(d));
 }
 
-static void put_amf_bool(AVIOContext *pb, int b) {
+static void put_amf_bool(AVIOContext *pb, int b)
+{
     avio_w8(pb, AMF_DATA_TYPE_BOOL);
     avio_w8(pb, !!b);
 }
@@ -187,18 +200,19 @@ static int flv_write_header(AVFormatContext *s)
     int64_t metadata_size_pos, data_size, metadata_count_pos;
     AVDictionaryEntry *tag = NULL;
 
-    for(i=0; i<s->nb_streams; i++){
+    for (i = 0; i < s->nb_streams; i++) {
         AVCodecContext *enc = s->streams[i]->codec;
         FLVStreamContext *sc;
         switch (enc->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
-            if (s->streams[i]->r_frame_rate.den && s->streams[i]->r_frame_rate.num) {
+            if (s->streams[i]->r_frame_rate.den &&
+                s->streams[i]->r_frame_rate.num) {
                 framerate = av_q2d(s->streams[i]->r_frame_rate);
             } else {
-                framerate = 1/av_q2d(s->streams[i]->codec->time_base);
+                framerate = 1 / av_q2d(s->streams[i]->codec->time_base);
             }
             video_enc = enc;
-            if(enc->codec_tag == 0) {
+            if (enc->codec_tag == 0) {
                 av_log(s, AV_LOG_ERROR, "video codec not compatible with flv\n");
                 return -1;
             }
@@ -227,32 +241,32 @@ static int flv_write_header(AVFormatContext *s)
         s->streams[i]->priv_data = sc;
         sc->last_ts = -1;
     }
+
     flv->delay = AV_NOPTS_VALUE;
 
     avio_write(pb, "FLV", 3);
-    avio_w8(pb,1);
-    avio_w8(pb,   FLV_HEADER_FLAG_HASAUDIO * !!audio_enc
-                 + FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
-    avio_wb32(pb,9);
-    avio_wb32(pb,0);
-
-    for(i=0; i<s->nb_streams; i++){
-        if(s->streams[i]->codec->codec_tag == 5){
-            avio_w8(pb,8); // message type
-            avio_wb24(pb,0); // include flags
-            avio_wb24(pb,0); // time stamp
-            avio_wb32(pb,0); // reserved
-            avio_wb32(pb,11); // size
-            flv->reserved=5;
+    avio_w8(pb, 1);
+    avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc +
+                FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
+    avio_wb32(pb, 9);
+    avio_wb32(pb, 0);
+
+    for (i = 0; i < s->nb_streams; i++)
+        if (s->streams[i]->codec->codec_tag == 5) {
+            avio_w8(pb, 8);     // message type
+            avio_wb24(pb, 0);   // include flags
+            avio_wb24(pb, 0);   // time stamp
+            avio_wb32(pb, 0);   // reserved
+            avio_wb32(pb, 11);  // size
+            flv->reserved = 5;
         }
-    }
 
     /* write meta_tag */
-    avio_w8(pb, 18);         // tag type META
-    metadata_size_pos= avio_tell(pb);
-    avio_wb24(pb, 0);          // size of data part (sum of all parts below)
-    avio_wb24(pb, 0);          // time stamp
-    avio_wb32(pb, 0);          // reserved
+    avio_w8(pb, 18);            // tag type META
+    metadata_size_pos = avio_tell(pb);
+    avio_wb24(pb, 0);           // size of data part (sum of all parts below)
+    avio_wb24(pb, 0);           // timestamp
+    avio_wb32(pb, 0);           // reserved
 
     /* now data of data_size size */
 
@@ -265,16 +279,18 @@ static int flv_write_header(AVFormatContext *s)
     metadata_count_pos = avio_tell(pb);
     metadata_count = 5 * !!video_enc +
                      5 * !!audio_enc +
-                     1 * !!data_enc +
+                     1 * !!data_enc  +
                      2; // +2 for duration and file size
 
     avio_wb32(pb, metadata_count);
 
     put_amf_string(pb, "duration");
     flv->duration_offset= avio_tell(pb);
-    put_amf_double(pb, s->duration / AV_TIME_BASE); // fill in the guessed duration, it'll be corrected later if incorrect
 
-    if(video_enc){
+    // fill in the guessed duration, it'll be corrected later if incorrect
+    put_amf_double(pb, s->duration / AV_TIME_BASE);
+
+    if (video_enc) {
         put_amf_string(pb, "width");
         put_amf_double(pb, video_enc->width);
 
@@ -291,7 +307,7 @@ static int flv_write_header(AVFormatContext *s)
         put_amf_double(pb, video_enc->codec_tag);
     }
 
-    if(audio_enc){
+    if (audio_enc) {
         put_amf_string(pb, "audiodatarate");
         put_amf_double(pb, audio_enc->bit_rate / 1024.0);
 
@@ -337,14 +353,14 @@ static int flv_write_header(AVFormatContext *s)
     }
 
     put_amf_string(pb, "filesize");
-    flv->filesize_offset= avio_tell(pb);
+    flv->filesize_offset = avio_tell(pb);
     put_amf_double(pb, 0); // delayed write
 
     put_amf_string(pb, "");
     avio_w8(pb, AMF_END_OF_OBJECT);
 
     /* write total size of tag */
-    data_size= avio_tell(pb) - metadata_size_pos - 10;
+    data_size = avio_tell(pb) - metadata_size_pos - 10;
 
     avio_seek(pb, metadata_count_pos, SEEK_SET);
     avio_wb32(pb, metadata_count);
@@ -359,10 +375,10 @@ static int flv_write_header(AVFormatContext *s)
         if (enc->codec_id == CODEC_ID_AAC || enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4) {
             int64_t pos;
             avio_w8(pb, enc->codec_type == AVMEDIA_TYPE_VIDEO ?
-                     FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO);
+                    FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO);
             avio_wb24(pb, 0); // size patched later
             avio_wb24(pb, 0); // ts
-            avio_w8(pb, 0); // ts ext
+            avio_w8(pb, 0);   // ts ext
             avio_wb24(pb, 0); // streamid
             pos = avio_tell(pb);
             if (enc->codec_id == CODEC_ID_AAC) {
@@ -399,9 +415,8 @@ static int flv_write_trailer(AVFormatContext *s)
         AVCodecContext *enc = s->streams[i]->codec;
         FLVStreamContext *sc = s->streams[i]->priv_data;
         if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
-                (enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4)) {
+                (enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4))
             put_avc_eos_tag(pb, sc->last_ts);
-        }
     }
 
     file_size = avio_tell(pb);
@@ -418,32 +433,35 @@ static int flv_write_trailer(AVFormatContext *s)
 
 static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
 {
-    AVIOContext *pb = s->pb;
-    AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
-    FLVContext *flv = s->priv_data;
+    AVIOContext *pb      = s->pb;
+    AVCodecContext *enc  = s->streams[pkt->stream_index]->codec;
+    FLVContext *flv      = s->priv_data;
     FLVStreamContext *sc = s->streams[pkt->stream_index]->priv_data;
     unsigned ts;
-    int size= pkt->size;
-    uint8_t *data= NULL;
+    int size = pkt->size;
+    uint8_t *data = NULL;
     int flags, flags_size;
 
-//    av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
+    // av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n",
+    //        enc->codec_type, timestamp, size);
 
-    if(enc->codec_id == CODEC_ID_VP6 || enc->codec_id == CODEC_ID_VP6F ||
-       enc->codec_id == CODEC_ID_VP6A || enc->codec_id == CODEC_ID_AAC)
-        flags_size= 2;
-    else if(enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4)
-        flags_size= 5;
+    if (enc->codec_id == CODEC_ID_VP6 || enc->codec_id == CODEC_ID_VP6F ||
+        enc->codec_id == CODEC_ID_VP6A || enc->codec_id == CODEC_ID_AAC)
+        flags_size = 2;
+    else if (enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4)
+        flags_size = 5;
     else
-        flags_size= 1;
+        flags_size = 1;
 
     switch (enc->codec_type) {
     case AVMEDIA_TYPE_VIDEO:
         avio_w8(pb, FLV_TAG_TYPE_VIDEO);
 
         flags = enc->codec_tag;
-        if(flags == 0) {
-            av_log(s, AV_LOG_ERROR, "video codec %s not compatible with flv\n", avcodec_get_name(enc->codec_id));
+        if (flags == 0) {
+            av_log(s, AV_LOG_ERROR,
+                   "video codec %s not compatible with flv\n",
+                   avcodec_get_name(enc->codec_id));
             return -1;
         }
 
@@ -462,41 +480,42 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
     default:
         return AVERROR(EINVAL);
     }
+
     if (enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4) {
         /* check if extradata looks like mp4 formated */
-        if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1) {
+        if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1)
             if (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
                 return -1;
-        }
     } else if (enc->codec_id == CODEC_ID_AAC && pkt->size > 2 &&
                (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
         av_log(s, AV_LOG_ERROR, "malformated aac bitstream, use -absf aac_adtstoasc\n");
         return -1;
     }
+
     if (flv->delay == AV_NOPTS_VALUE)
         flv->delay = -pkt->dts;
+
     if (pkt->dts < -flv->delay) {
-        av_log(s, AV_LOG_WARNING, "Packets are not in the proper order with "
-                                  "respect to DTS\n");
+        av_log(s, AV_LOG_WARNING,
+               "Packets are not in the proper order with respect to DTS\n");
         return AVERROR(EINVAL);
     }
 
     ts = pkt->dts + flv->delay; // add delay to force positive dts
 
     /* check Speex packet duration */
-    if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 160) {
+    if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 160)
         av_log(s, AV_LOG_WARNING, "Warning: Speex stream has more than "
                                   "8 frames per packet. Adobe Flash "
                                   "Player cannot handle this!\n");
-    }
 
     if (sc->last_ts < ts)
         sc->last_ts = ts;
 
-    avio_wb24(pb,size + flags_size);
-    avio_wb24(pb,ts);
-    avio_w8(pb,(ts >> 24) & 0x7F); // timestamps are 32bits _signed_
-    avio_wb24(pb,flv->reserved);
+    avio_wb24(pb, size + flags_size);
+    avio_wb24(pb, ts);
+    avio_w8(pb, (ts >> 24) & 0x7F); // timestamps are 32 bits _signed_
+    avio_wb24(pb, flv->reserved);
 
     if (enc->codec_type == AVMEDIA_TYPE_DATA) {
         int data_size;
@@ -520,25 +539,26 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
         avio_seek(pb, data_size + 10 - 3, SEEK_CUR);
         avio_wb32(pb, data_size + 11);
     } else {
-    avio_w8(pb,flags);
-    if (enc->codec_id == CODEC_ID_VP6)
-        avio_w8(pb,0);
-    if (enc->codec_id == CODEC_ID_VP6F || enc->codec_id == CODEC_ID_VP6A)
-        avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0);
-    else if (enc->codec_id == CODEC_ID_AAC)
-        avio_w8(pb,1); // AAC raw
-    else if (enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4) {
-        avio_w8(pb,1); // AVC NALU
-        avio_wb24(pb,pkt->pts - pkt->dts);
-    }
+        avio_w8(pb,flags);
+        if (enc->codec_id == CODEC_ID_VP6)
+            avio_w8(pb,0);
+        if (enc->codec_id == CODEC_ID_VP6F || enc->codec_id == CODEC_ID_VP6A)
+            avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0);
+        else if (enc->codec_id == CODEC_ID_AAC)
+            avio_w8(pb,1); // AAC raw
+        else if (enc->codec_id == CODEC_ID_H264 || enc->codec_id == CODEC_ID_MPEG4) {
+            avio_w8(pb,1); // AVC NALU
+            avio_wb24(pb,pkt->pts - pkt->dts);
+        }
 
-    avio_write(pb, data ? data : pkt->data, size);
+        avio_write(pb, data ? data : pkt->data, size);
 
-    avio_wb32(pb,size+flags_size+11); // previous tag size
-    flv->duration = FFMAX(flv->duration, pkt->pts + flv->delay + pkt->duration);
+        avio_wb32(pb, size + flags_size + 11); // previous tag size
+        flv->duration = FFMAX(flv->duration,
+                              pkt->pts + flv->delay + pkt->duration);
     }
-    avio_flush(pb);
 
+    avio_flush(pb);
     av_free(data);
 
     return pb->error;
@@ -559,9 +579,9 @@ AVOutputFormat ff_flv_muxer = {
     .write_header   = flv_write_header,
     .write_packet   = flv_write_packet,
     .write_trailer  = flv_write_trailer,
-    .codec_tag      = (const AVCodecTag* const []){
-        flv_video_codec_ids, flv_audio_codec_ids, 0
-    },
+    .codec_tag      = (const AVCodecTag* const []) {
+                          flv_video_codec_ids, flv_audio_codec_ids, 0
+                      },
     .flags          = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
                       AVFMT_TS_NONSTRICT,
 };