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Sur d’autres sites (12151)

  • Python ThreadedTCPServer : "Name or service not known"

    11 avril 2014, par Hal

    I was developing a ThreadedTCPServer to communicate with a PHP application also residing in this same machine. This is suppose to receive requests from this PHP app and to convert some videos locally using ffmpeg.

    Here's the code :

    # -*- coding: utf-8 -*-
    import os
    import socket
    import threading
    import logging.config
    import SocketServer, time
    from queuev2 import QueueServer

    logging.basicConfig(format='[%(asctime)s.%(msecs).03d] %(message)s', datefmt='%Y-%m-%d %H:%M:%S', filename=os.path.join(os.path.dirname(os.path.realpath(__file__)), 'converter.log'), level=logging.INFO)

    class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):

       def handle(self):
           data = self.request.recv(1024)
           cur_thread = threading.current_thread()
           response = "{}: {}".format(cur_thread.name, data)
           videoPool.add(data)
           print "Output! %s" % data
           self.request.sendall(response)

    class ThreadedTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
       pass

    if __name__ == "__main__":

       logging.info("Initializing...")
       videoPool = QueueServer()
       HOST, PORT = "localhost", 6666

       server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler)
       ip, port = server.server_address

       # Start a thread with the server -- that thread will then start one
       # more thread for each request
       server_thread = threading.Thread(target=server.serve_forever)

       # Exit the server thread when the main thread terminates
       server_thread.daemon = True
       server_thread.start()

       print("Server loop running in thread: %s" % server_thread.name)

       # "Groundhog day" time
       while True:
           time.sleep(999)
           pass

       #server.shutdown()

    This works well in my development laptop, but on the server i'm getting the following error :

    Traceback (most recent call last):
     File "server.py", line 31, in <module>
       server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler)
     File "/usr/lib/python2.7/SocketServer.py", line 408, in __init__
       self.server_bind()
     File "/usr/lib/python2.7/SocketServer.py", line 419, in server_bind
       self.socket.bind(self.server_address)
     File "/usr/lib/python2.7/socket.py", line 224, in meth
       return getattr(self._sock,name)(*args)
    socket.gaierror: [Errno -2] Name or service not known
    </module>

    I'm guessing it has to do with the port I'm using (6666), but I've tried others and it hasn't been working. Would Unix Domain Sockets be of use here ? Can you give me an example ?

  • Getting “field has incomplete type” and "conflicting types"

    4 novembre 2013, par Viet

    I'm trying build pjsip from source with video support by gcc on ubuntu. After i success full run ./configure and make dep, i run make and i have error below :

    ../src/pjmedia/ffmpeg_util.c:46:18: error: field ‘codec_id’ has incomplete type
    ../src/pjmedia/ffmpeg_util.c:148:13: error: conflicting types for ‘pjmedia_format_id_to_CodecID’
    ../src/pjmedia/ffmpeg_util.h:23:13: note: previous declaration of ‘pjmedia_format_id_to_CodecID’ was here
    ../src/pjmedia/ffmpeg_util.c: In function ‘pjmedia_format_id_to_CodecID’:
    ../src/pjmedia/ffmpeg_util.c:154:35: warning: comparison between pointer and integer [enabled by default]
    ../src/pjmedia/ffmpeg_util.c:155:6: error: dereferencing pointer to incomplete type
    ../src/pjmedia/ffmpeg_util.c:155:6: warning: statement with no effect [-Wunused-value]
    ../src/pjmedia/ffmpeg_util.c:160:5: error: dereferencing pointer to incomplete type
    ../src/pjmedia/ffmpeg_util.c:160:5: warning: statement with no effect [-Wunused-value]
    ../src/pjmedia/ffmpeg_util.c: At top level:
    ../src/pjmedia/ffmpeg_util.c:164:55: error: parameter 1 (‘codec_id’) has incomplete type

    Here is the code in ffmpeg_util.h and ffmpeg_util.c

    ffmpeg_util.h

    #ifndef __PJMEDIA_FFMPEG_UTIL_H__
    #define __PJMEDIA_FFMPEG_UTIL_H__

    #include <pjmedia></pjmedia>format.h>

    #ifdef _MSC_VER
    #   ifndef __cplusplus
    #   define inline _inline
    #   endif
    #   pragma warning(disable:4244) /* possible loss of data */
    #endif

    #include <libavutil></libavutil>avutil.h>
    #include <libavcodec></libavcodec>avcodec.h>

    void pjmedia_ffmpeg_add_ref();
    void pjmedia_ffmpeg_dec_ref();

    pj_status_t pjmedia_format_id_to_PixelFormat(pjmedia_format_id fmt_id,
                            enum PixelFormat *pixel_format);

    pj_status_t PixelFormat_to_pjmedia_format_id(enum PixelFormat pf,
                            pjmedia_format_id *fmt_id);

    pj_status_t pjmedia_format_id_to_CodecID(pjmedia_format_id fmt_id,
                        enum CodecID *codec_id);

    pj_status_t CodecID_to_pjmedia_format_id(enum CodecID codec_id,
                        pjmedia_format_id *fmt_id);

    #endif /* __PJMEDIA_FFMPEG_UTIL_H__ */

    ffmpeg_util.c

    #include <pjmedia></pjmedia>types.h>
    #include <pj></pj>errno.h>
    #include <pj></pj>log.h>
    #include <pj></pj>string.h>

    #if PJMEDIA_HAS_LIBAVFORMAT &amp;&amp; PJMEDIA_HAS_LIBAVUTIL

    #include "ffmpeg_util.h"
    #include <libavformat></libavformat>avformat.h>

    #define MAKE_VER(mj,mn,mi)  ((mj &lt;&lt; 16) | (mn &lt;&lt; 8) | (mi &lt;&lt; 0))
    #define VER_AT_LEAST(mj,mn,mi)  (MAKE_VER(LIBAVUTIL_VERSION_MAJOR, \
                                             LIBAVUTIL_VERSION_MINOR, \
                                             LIBAVUTIL_VERSION_MICRO) >= \
                                    MAKE_VER(mj,mn,mi))



    /* Conversion table between pjmedia_format_id and PixelFormat */
    static const struct ffmpeg_fmt_table_t
    {
       pjmedia_format_id   id;
       enum PixelFormat    pf;
    } ffmpeg_fmt_table[] =
    {
       { PJMEDIA_FORMAT_RGBA, PIX_FMT_RGBA},
       { PJMEDIA_FORMAT_RGB24,PIX_FMT_BGR24},
       { PJMEDIA_FORMAT_BGRA, PIX_FMT_BGRA},
    #if VER_AT_LEAST(51,20,1)
       { PJMEDIA_FORMAT_GBRP, PIX_FMT_GBR24P},
    #endif

       { PJMEDIA_FORMAT_AYUV, PIX_FMT_NONE},
       { PJMEDIA_FORMAT_YUY2, PIX_FMT_YUYV422},
       { PJMEDIA_FORMAT_UYVY, PIX_FMT_UYVY422},
       { PJMEDIA_FORMAT_I420, PIX_FMT_YUV420P},
       //{ PJMEDIA_FORMAT_YV12, PIX_FMT_YUV420P},
       { PJMEDIA_FORMAT_I422, PIX_FMT_YUV422P},
       { PJMEDIA_FORMAT_I420JPEG, PIX_FMT_YUVJ420P},
       { PJMEDIA_FORMAT_I422JPEG, PIX_FMT_YUVJ422P},
    };

    /* Conversion table between pjmedia_format_id and CodecID */
    static const struct ffmpeg_codec_table_t
    {
       pjmedia_format_id   id;
       enum CodecID    codec_id;
    } ffmpeg_codec_table[] =
    {
       {PJMEDIA_FORMAT_H261,   CODEC_ID_H261},
       {PJMEDIA_FORMAT_H263,   CODEC_ID_H263},
       {PJMEDIA_FORMAT_H263P,  CODEC_ID_H263P},
       {PJMEDIA_FORMAT_H264,   CODEC_ID_H264},
       {PJMEDIA_FORMAT_MPEG1VIDEO, CODEC_ID_MPEG1VIDEO},
       {PJMEDIA_FORMAT_MPEG2VIDEO, CODEC_ID_MPEG2VIDEO},
       {PJMEDIA_FORMAT_MPEG4,  CODEC_ID_MPEG4},
       {PJMEDIA_FORMAT_MJPEG,  CODEC_ID_MJPEG}
    };

    static int pjmedia_ffmpeg_ref_cnt;

    static void ffmpeg_log_cb(void* ptr, int level, const char* fmt, va_list vl);

    void pjmedia_ffmpeg_add_ref()
    {
       if (pjmedia_ffmpeg_ref_cnt++ == 0) {
       av_log_set_level(AV_LOG_ERROR);
       av_log_set_callback(&amp;ffmpeg_log_cb);
       av_register_all();
       }
    }

    void pjmedia_ffmpeg_dec_ref()
    {
       if (pjmedia_ffmpeg_ref_cnt-- == 1) {
       /* How to shutdown ffmpeg? */
       }

       if (pjmedia_ffmpeg_ref_cnt &lt; 0) pjmedia_ffmpeg_ref_cnt = 0;
    }


    static void ffmpeg_log_cb(void* ptr, int level, const char* fmt, va_list vl)
    {
       const char *LOG_SENDER = "ffmpeg";
       enum { LOG_LEVEL = 5 };
       char buf[100];
       int bufsize = sizeof(buf), len;
       pj_str_t fmt_st;

       /* Custom callback needs to filter log level by itself */
       if (level > av_log_get_level())
       return;

       /* Add original ffmpeg sender to log format */
       if (ptr) {
       AVClass* avc = *(AVClass**)ptr;
       len = pj_ansi_snprintf(buf, bufsize, "%s: ", avc->item_name(ptr));
       bufsize -= len;
       }

       /* Copy original log format */
       len = pj_ansi_strlen(fmt);
       if (len > bufsize-1)
       len = bufsize-1;
       pj_memcpy(buf+sizeof(buf)-bufsize, fmt, len);
       bufsize -= len;

       /* Trim log format */
       pj_strset(&amp;fmt_st, buf, sizeof(buf)-bufsize);
       pj_strrtrim(&amp;fmt_st);
       buf[fmt_st.slen] = &#39;\0&#39;;

       pj_log(LOG_SENDER, LOG_LEVEL, buf, vl);
    }


    pj_status_t pjmedia_format_id_to_PixelFormat(pjmedia_format_id fmt_id,
                            enum PixelFormat *pixel_format)
    {
       unsigned i;
       for (i=0; iid==fmt_id &amp;&amp; t->pf != PIX_FMT_NONE) {
           *pixel_format = t->pf;
           return PJ_SUCCESS;
       }
       }

       *pixel_format = PIX_FMT_NONE;
       return PJ_ENOTFOUND;
    }

    pj_status_t PixelFormat_to_pjmedia_format_id(enum PixelFormat pf,
                            pjmedia_format_id *fmt_id)
    {
       unsigned i;
       for (i=0; ipf == pf) {
           if (fmt_id) *fmt_id = t->id;
           return PJ_SUCCESS;
       }
       }

       return PJ_ENOTFOUND;
    }

    pj_status_t pjmedia_format_id_to_CodecID(pjmedia_format_id fmt_id,
                        enum CodecID *codec_id)
    {
       unsigned i;
       for (i=0; iid==fmt_id &amp;&amp; t->codec_id != PIX_FMT_NONE) {
           *codec_id = t->codec_id;
           return PJ_SUCCESS;
       }
       }

       *codec_id = PIX_FMT_NONE;
       return PJ_ENOTFOUND;
    }

    pj_status_t CodecID_to_pjmedia_format_id(enum CodecID codec_id,
                        pjmedia_format_id *fmt_id)
    {
       unsigned i;
       for (i=0; icodec_id == codec_id) {
           if (fmt_id) *fmt_id = t->id;
           return PJ_SUCCESS;
       }
       }

       return PJ_ENOTFOUND;
    }


    #ifdef _MSC_VER
    #   pragma comment( lib, "avformat.lib")
    #   pragma comment( lib, "avutil.lib")
    #endif

    #endif  /* #if PJMEDIA_HAS_LIBAVFORMAT &amp;&amp; PJMEDIA_HAS_LIBAVUTIL */

    Help me fix this error !

  • prores : Reject negative run and level values

    10 octobre 2013, par Luca Barbato
    prores : Reject negative run and level values
    

    Sample-Id : 00000611-google

    Reported-by : Mateusz "j00ru" Jurczyk and Gynvael Coldwind
    CC : libav-stable@libav.org

    • [DBH] libavcodec/proresdec.c