[FFmpeg-devel] ffserver jpg output

[ill]

Who is in charge of committing the patches? This patch fixes bugs, so I 
don't see why it should be ignored.

> Ave all
>
> Background:
> I'm using ffserver, which feeds of a webcam, to serve .swf and .jpg 
> files.
>
> To serve the .jpg files, I use the patch mentioned in 
> http://lists.ffmpeg.org/pipermail/ffmpeg-devel/2006-June/013107.html
> Over the years I "ported" the patch to more current versions of ffmpeg.
>
> Attached is a patch for 2.6.x, older versions are available at 
> http://sarijopen.student.utwente.nl/caligula/ffmpeg/
>
> Greetings Martijn
> (Who hopes that ffserver is kept alive)
>
>
>
>
>
> diff -Nrup ffmpeg-2.6.1--orig/ffserver.c ffmpeg-2.6.1/ffserver.c
> --- ffmpeg-2.6.1--orig/ffserver.c    2015-03-16 20:25:48.000000000 +0100
> +++ ffmpeg-2.6.1/ffserver.c    2015-04-05 02:33:53.000000000 +0200
> @@ -967,6 +967,10 @@ static int handle_connection(HTTPContext
>          /* close connection if trailer sent */
>          if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
>              return -1;
> +        /* Check if it is a single jpeg frame 123 */
> +        if (c->stream->single_frame && c->data_count > 
> c->cur_frame_bytes && c->cur_frame_bytes > 0) {
> +            close_connection(c);
> +        }
>          break;
>      case HTTPSTATE_RECEIVE_DATA:
>          /* no need to read if no events */
> diff -Nrup ffmpeg-2.6.1--orig/ffserver_config.c 
> ffmpeg-2.6.1/ffserver_config.c
> --- ffmpeg-2.6.1--orig/ffserver_config.c    2015-03-16 
> 20:25:48.000000000 +0100
> +++ ffmpeg-2.6.1/ffserver_config.c    2015-04-05 02:33:53.000000000 +0200
> @@ -862,8 +862,10 @@ static int ffserver_parse_config_stream(
>          } else {
>              stream->stream_type = STREAM_TYPE_LIVE;
>              /* JPEG cannot be used here, so use single frame MJPEG */
> -            if (!strcmp(arg, "jpeg"))
> -                strcpy(arg, "mjpeg");
> +            if (!strcmp(arg, "jpeg")) {
> +                strcpy(arg, "singlejpeg");
> +                stream->single_frame=1; +            }
>              stream->fmt = ffserver_guess_format(arg, NULL, NULL);
>              if (!stream->fmt)
>                  ERROR("Unknown Format: '%s'\n", arg);
> diff -Nrup ffmpeg-2.6.1--orig/ffserver_config.h 
> ffmpeg-2.6.1/ffserver_config.h
> --- ffmpeg-2.6.1--orig/ffserver_config.h    2015-03-16 
> 20:25:48.000000000 +0100
> +++ ffmpeg-2.6.1/ffserver_config.h    2015-04-05 02:33:53.000000000 +0200
> @@ -79,6 +79,7 @@ typedef struct FFServerStream {
>      int multicast_port;           /* first port used for multicast */
>      int multicast_ttl;
>      int loop;                     /* if true, send the stream in 
> loops (only meaningful if file) */
> +    char single_frame;            /* only single frame */
>
>      /* feed specific */
>      int feed_opened;              /* true if someone is writing to 
> the feed */
> diff -Nrup ffmpeg-2.6.1--orig/libavformat/allformats.c 
> ffmpeg-2.6.1/libavformat/allformats.c
> --- ffmpeg-2.6.1--orig/libavformat/allformats.c    2015-03-16 
> 20:25:52.000000000 +0100
> +++ ffmpeg-2.6.1/libavformat/allformats.c    2015-04-05 
> 02:33:53.000000000 +0200
> @@ -273,6 +273,7 @@ void av_register_all(void)
>      REGISTER_MUXER   (SEGMENT,          stream_segment);
>      REGISTER_DEMUXER (SHORTEN,          shorten);
>      REGISTER_DEMUXER (SIFF,             siff);
> +    REGISTER_MUXER   (SINGLEJPEG,       singlejpeg);
>      REGISTER_DEMUXER (SLN,              sln);
>      REGISTER_DEMUXER (SMACKER,          smacker);
>      REGISTER_MUXDEMUX(SMJPEG,           smjpeg);
> diff -Nrup ffmpeg-2.6.1--orig/libavformat/rawenc.c 
> ffmpeg-2.6.1/libavformat/rawenc.c
> --- ffmpeg-2.6.1--orig/libavformat/rawenc.c    2015-03-16 
> 20:25:54.000000000 +0100
> +++ ffmpeg-2.6.1/libavformat/rawenc.c    2015-04-05 02:33:53.000000000 
> +0200
> @@ -250,6 +250,17 @@ AVOutputFormat ff_mjpeg_muxer = {
>      .write_packet      = ff_raw_write_packet,
>      .flags             = AVFMT_NOTIMESTAMPS,
>  };
> +
> +AVOutputFormat ff_singlejpeg_muxer = {
> +    .name              = "singlejpeg",
> +    .long_name         = NULL_IF_CONFIG_SMALL("JPEG single image"),
> +    .mime_type         = "image/jpeg",
> +    .extensions        = "jpg,jpeg",
> +    .audio_codec       = AV_CODEC_ID_NONE,
> +    .video_codec       = AV_CODEC_ID_MJPEG,
> +    .write_packet      = ff_raw_write_packet,
> +    .flags             = AVFMT_NOTIMESTAMPS,
> +};
>  #endif
>
>  #if CONFIG_MLP_MUXER
>
>
>
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