amr: Cosmetic cleanup

Add spaces around operators, fix brace placement and whitespace to
match K&R style, vertically align code, remove redundant != 0 and
convert x == 0 into !x, drop useless braces.
Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/amr.c

@@ -28,27 +28,22 @@ Only mono files are supported.
 #include "avformat.h"
 #include "internal.h"
 
-static const char AMR_header [] = "#!AMR\n";
-static const char AMRWB_header [] = "#!AMR-WB\n";
+static const char AMR_header[]   = "#!AMR\n";
+static const char AMRWB_header[] = "#!AMR-WB\n";
 
 #if CONFIG_AMR_MUXER
 static int amr_write_header(AVFormatContext *s)
 {
-    AVIOContext *pb = s->pb;
+    AVIOContext    *pb  = s->pb;
     AVCodecContext *enc = s->streams[0]->codec;
 
     s->priv_data = NULL;
 
-    if (enc->codec_id == CODEC_ID_AMR_NB)
-    {
+    if (enc->codec_id == CODEC_ID_AMR_NB) {
         avio_write(pb, AMR_header,   sizeof(AMR_header)   - 1); /* magic number */
-    }
-    else if(enc->codec_id == CODEC_ID_AMR_WB)
-    {
+    } else if (enc->codec_id == CODEC_ID_AMR_WB) {
         avio_write(pb, AMRWB_header, sizeof(AMRWB_header) - 1); /* magic number */
-    }
-    else
-    {
+    } else {
         return -1;
     }
     avio_flush(pb);
@@ -65,11 +60,11 @@ static int amr_write_packet(AVFormatContext *s, AVPacket *pkt)
 
 static int amr_probe(AVProbeData *p)
 {
-    //Only check for "#!AMR" which could be amr-wb, amr-nb.
-    //This will also trigger multichannel files: "#!AMR_MC1.0\n" and
-    //"#!AMR-WB_MC1.0\n" (not supported)
+    // Only check for "#!AMR" which could be amr-wb, amr-nb.
+    // This will also trigger multichannel files: "#!AMR_MC1.0\n" and
+    // "#!AMR-WB_MC1.0\n" (not supported)
 
-    if(memcmp(p->buf,AMR_header,5)==0)
+    if (!memcmp(p->buf, AMR_header, 5))
         return AVPROBE_SCORE_MAX;
     else
         return 0;
@@ -86,83 +81,71 @@ static int amr_read_header(AVFormatContext *s)
 
     st = avformat_new_stream(s, NULL);
     if (!st)
-    {
         return AVERROR(ENOMEM);
-    }
-    if(memcmp(header,AMR_header,6)!=0)
-    {
-        avio_read(pb, header+6, 3);
-        if(memcmp(header,AMRWB_header,9)!=0)
-        {
+    if (memcmp(header, AMR_header, 6)) {
+        avio_read(pb, header + 6, 3);
+        if (memcmp(header, AMRWB_header, 9)) {
             return -1;
         }
 
-        st->codec->codec_tag = MKTAG('s', 'a', 'w', 'b');
-        st->codec->codec_id = CODEC_ID_AMR_WB;
+        st->codec->codec_tag   = MKTAG('s', 'a', 'w', 'b');
+        st->codec->codec_id    = CODEC_ID_AMR_WB;
         st->codec->sample_rate = 16000;
-    }
-    else
-    {
-        st->codec->codec_tag = MKTAG('s', 'a', 'm', 'r');
-        st->codec->codec_id = CODEC_ID_AMR_NB;
+    } else {
+        st->codec->codec_tag   = MKTAG('s', 'a', 'm', 'r');
+        st->codec->codec_id    = CODEC_ID_AMR_NB;
         st->codec->sample_rate = 8000;
     }
-    st->codec->channels = 1;
+    st->codec->channels   = 1;
     st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
     avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
 
     return 0;
 }
 
-static int amr_read_packet(AVFormatContext *s,
-                          AVPacket *pkt)
+static int amr_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
     AVCodecContext *enc = s->streams[0]->codec;
     int read, size = 0, toc, mode;
     int64_t pos = avio_tell(s->pb);
 
-    if (s->pb->eof_reached)
-    {
+    if (s->pb->eof_reached) {
         return AVERROR(EIO);
     }
 
-//FIXME this is wrong, this should rather be in a AVParset
-    toc=avio_r8(s->pb);
+    // FIXME this is wrong, this should rather be in a AVParset
+    toc  = avio_r8(s->pb);
     mode = (toc >> 3) & 0x0F;
 
-    if (enc->codec_id == CODEC_ID_AMR_NB)
-    {
-        static const uint8_t packed_size[16] = {12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0};
+    if (enc->codec_id == CODEC_ID_AMR_NB) {
+        static const uint8_t packed_size[16] = {
+            12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0
+        };
 
-        size=packed_size[mode]+1;
-    }
-    else if(enc->codec_id == CODEC_ID_AMR_WB)
-    {
-        static uint8_t packed_size[16] = {18, 24, 33, 37, 41, 47, 51, 59, 61, 6, 6, 0, 0, 0, 1, 1};
+        size = packed_size[mode] + 1;
+    } else if(enc->codec_id == CODEC_ID_AMR_WB) {
+        static uint8_t packed_size[16] = {
+            18, 24, 33, 37, 41, 47, 51, 59, 61, 6, 6, 0, 0, 0, 1, 1
+        };
 
-        size=packed_size[mode];
-    }
-    else
-    {
+        size = packed_size[mode];
+    } else {
         assert(0);
     }
 
-    if ( (size==0) || av_new_packet(pkt, size))
-    {
+    if (!size || av_new_packet(pkt, size))
         return AVERROR(EIO);
-    }
 
     /* Both AMR formats have 50 frames per second */
     s->streams[0]->codec->bit_rate = size*8*50;
 
     pkt->stream_index = 0;
-    pkt->pos = pos;
-    pkt->data[0]=toc;
-    pkt->duration= enc->codec_id == CODEC_ID_AMR_NB ? 160 : 320;
-    read = avio_read(s->pb, pkt->data+1, size-1);
+    pkt->pos          = pos;
+    pkt->data[0]      = toc;
+    pkt->duration     = enc->codec_id == CODEC_ID_AMR_NB ? 160 : 320;
+    read              = avio_read(s->pb, pkt->data + 1, size - 1);
 
-    if (read != size-1)
-    {
+    if (read != size - 1) {
         av_free_packet(pkt);
         return AVERROR(EIO);
     }