lavf: Don't explicitly flush after each written packet in muxers

Since 596e5d4783, this is not necessary anymore. It also allows to
actually disable the flushing, improving write performance (but
possibly giving worse latency in real-time streaming).

Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/adtsenc.c

@@ -158,7 +158,6 @@ static int adts_write_packet(AVFormatContext *s, AVPacket *pkt)
         }
     }
     avio_write(pb, pkt->data, pkt->size);
-    avio_flush(pb);
 
     return 0;
 }

libavformat/amr.c

@@ -55,7 +55,6 @@ static int amr_write_header(AVFormatContext *s)
 static int amr_write_packet(AVFormatContext *s, AVPacket *pkt)
 {
     avio_write(s->pb, pkt->data, pkt->size);
-    avio_flush(s->pb);
     return 0;
 }
 #endif /* CONFIG_AMR_MUXER */

libavformat/assenc.c

@@ -58,9 +58,6 @@ static int write_header(AVFormatContext *s)
 static int write_packet(AVFormatContext *s, AVPacket *pkt)
 {
     avio_write(s->pb, pkt->data, pkt->size);
-
-    avio_flush(s->pb);
-
     return 0;
 }
 

libavformat/avienc.c

@@ -558,7 +558,6 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
     if (size & 1)
         avio_w8(pb, 0);
 
-    avio_flush(pb);
     return 0;
 }
 

libavformat/daud.c

@@ -68,7 +68,6 @@ static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     avio_wb16(s->pb, pkt->size);
     avio_wb16(s->pb, 0x8010); // unknown
     avio_write(s->pb, pkt->data, pkt->size);
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/dvenc.c

@@ -388,7 +388,6 @@ static int dv_write_packet(struct AVFormatContext *s, AVPacket *pkt)
                               pkt->data, pkt->size, &frame);
     if (fsize > 0) {
         avio_write(s->pb, frame, fsize);
-        avio_flush(s->pb);
     }
     return 0;
 }

libavformat/flacenc.c

@@ -113,7 +113,6 @@ static int flac_write_trailer(struct AVFormatContext *s)
 static int flac_write_packet(struct AVFormatContext *s, AVPacket *pkt)
 {
     avio_write(s->pb, pkt->data, pkt->size);
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/flvenc.c

@@ -545,7 +545,6 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
                               pkt->pts + flv->delay + pkt->duration);
     }
 
-    avio_flush(pb);
     av_free(data);
 
     return pb->error;

libavformat/framecrcenc.c

@@ -31,7 +31,6 @@ static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     snprintf(buf, sizeof(buf), "%d, %10"PRId64", %10"PRId64", %8d, %8d, 0x%08x\n",
              pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size, crc);
     avio_write(s->pb, buf, strlen(buf));
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/gif.c

@@ -329,7 +329,6 @@ static int gif_write_video(AVFormatContext *s, AVCodecContext *enc,
     gif_image_write_image(pb, 0, 0, enc->width, enc->height,
                           buf, enc->width * 3, AV_PIX_FMT_RGB24);
 
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/gxfenc.c

@@ -896,8 +896,6 @@ static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt)
         gxf->packet_count = 0;
     }
 
-    avio_flush(pb);
-
     return 0;
 }
 

libavformat/ilbc.c

@@ -56,7 +56,6 @@ static int ilbc_write_header(AVFormatContext *s)
 static int ilbc_write_packet(AVFormatContext *s, AVPacket *pkt)
 {
     avio_write(s->pb, pkt->data, pkt->size);
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/ivfenc.c

@@ -53,7 +53,6 @@ static int ivf_write_packet(AVFormatContext *s, AVPacket *pkt)
     avio_wl32(pb, pkt->size);
     avio_wl64(pb, pkt->pts);
     avio_write(pb, pkt->data, pkt->size);
-    avio_flush(pb);
 
     return 0;
 }

libavformat/mpjpeg.c

@@ -44,7 +44,6 @@ static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt)
 
     snprintf(buf1, sizeof(buf1), "\n--%s\n", BOUNDARY_TAG);
     avio_write(s->pb, buf1, strlen(buf1));
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/rawenc.c

@@ -26,7 +26,6 @@
 int ff_raw_write_packet(AVFormatContext *s, AVPacket *pkt)
 {
     avio_write(s->pb, pkt->data, pkt->size);
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/rmenc.c

@@ -369,7 +369,6 @@ static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size, int
     } else {
         avio_write(pb, buf, size);
     }
-    avio_flush(pb);
     stream->nb_frames++;
     av_free(buf1);
     return 0;
@@ -414,7 +413,6 @@ static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size, int
     avio_w8(pb, stream->nb_frames & 0xff);
 
     avio_write(pb, buf, size);
-    avio_flush(pb);
 
     stream->nb_frames++;
     return 0;

libavformat/smjpegenc.c

@@ -109,7 +109,6 @@ static int smjpeg_write_packet(AVFormatContext *s, AVPacket *pkt)
     avio_wb32(pb, pkt->pts);
     avio_wb32(pb, pkt->size);
     avio_write(pb, pkt->data, pkt->size);
-    avio_flush(pb);
 
     smc->duration = FFMAX(smc->duration, pkt->pts + pkt->duration);
     return 0;

libavformat/spdifenc.c

@@ -538,7 +538,6 @@ static int spdif_write_packet(struct AVFormatContext *s, AVPacket *pkt)
     av_log(s, AV_LOG_DEBUG, "type=%x len=%i pkt_offset=%i\n",
            ctx->data_type, ctx->out_bytes, ctx->pkt_offset);
 
-    avio_flush(s->pb);
     return 0;
 }
 

libavformat/swfenc.c

@@ -436,8 +436,6 @@ static int swf_write_video(AVFormatContext *s,
     put_swf_tag(s, TAG_SHOWFRAME);
     put_swf_end_tag(s);
 
-    avio_flush(s->pb);
-
     return 0;
 }
 

libavformat/vc1testenc.c

@@ -63,7 +63,6 @@ static int vc1test_write_packet(AVFormatContext *s, AVPacket *pkt)
     avio_wl32(pb, pkt->size | ((pkt->flags & AV_PKT_FLAG_KEY) ? 0x80000000 : 0));
     avio_wl32(pb, pkt->pts);
     avio_write(pb, pkt->data, pkt->size);
-    avio_flush(pb);
     ctx->frames++;
 
     return 0;

libavformat/wvenc.c

@@ -51,7 +51,6 @@ static int wv_write_packet(AVFormatContext *ctx, AVPacket *pkt)
     s->samples += header.samples;
 
     avio_write(ctx->pb, pkt->data, pkt->size);
-    avio_flush(ctx->pb);
 
     return 0;
 }

libavformat/yuv4mpeg.c

@@ -147,7 +147,6 @@ static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
             ptr2 += picture->linesize[2];
         }
     }
-    avio_flush(pb);
     return 0;
 }