From 657d02fbaca47a8f3a13982f450c7001fc40cc0b Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Wed, 10 Aug 2011 10:57:50 +0200 Subject: rtsp.c: converted to C Trimmed the newlines to be LF-only. Converted the source to plain C, to use curl style indents, to compile warning-free with picky options and fixed the minor fprintf() bug on line 245. Added to makefile. --- docs/examples/Makefile.inc | 2 +- docs/examples/rtsp.c | 524 +++++++++++++++++++++++---------------------- 2 files changed, 272 insertions(+), 254 deletions(-) (limited to 'docs/examples') diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc index 9a2b48ea1..c07520321 100644 --- a/docs/examples/Makefile.inc +++ b/docs/examples/Makefile.inc @@ -4,7 +4,7 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \ https multi-app multi-debugcallback multi-double multi-post multi-single \ persistant post-callback postit2 sepheaders simple simplepost simplessl \ sendrecv httpcustomheader certinfo chkspeed ftpgetinfo ftp-wildcard \ - smtp-multi simplesmtp smtp-tls + smtp-multi simplesmtp smtp-tls rtsp # These examples require external dependencies that may not be commonly # available on POSIX systems, so don't bother attempting to compile them here. diff --git a/docs/examples/rtsp.c b/docs/examples/rtsp.c index 2fe912c63..42b26cc71 100644 --- a/docs/examples/rtsp.c +++ b/docs/examples/rtsp.c @@ -1,253 +1,271 @@ -/* - * Copyright (c) 2011, Jim Hollinger - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * * Neither the name of Jim Hollinger nor the names of its contributors - * may be used to endorse or promote products derived from this - * software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include -#include -#include - -#if defined (WIN32) -# include // _getch() -#else -# include -# include - - int _getch(void) { - struct termios oldt, newt; - tcgetattr( STDIN_FILENO, &oldt ); - newt = oldt; - newt.c_lflag &= ~( ICANON | ECHO ); - tcsetattr( STDIN_FILENO, TCSANOW, &newt ); - int ch = getchar(); - tcsetattr( STDIN_FILENO, TCSANOW, &oldt ); - return ch; - } -#endif - -#include - -#define VERSION_STR "V1.0" - -// error handling macros -#define my_curl_easy_setopt(A, B, C) \ - if ((res = curl_easy_setopt((A), (B), (C))) != CURLE_OK) \ - fprintf(stderr, "curl_easy_setopt(%s, %s, %s) failed: %d\n", #A, #B, #C, res); - -#define my_curl_easy_perform(A) \ - if ((res = curl_easy_perform((A))) != CURLE_OK) \ - fprintf(stderr, "curl_easy_perform(%s) failed: %d\n", #A, res); - - -// send RTSP OPTIONS request -void rtsp_options(CURL *curl, const char *uri) { - CURLcode res = CURLE_OK; - printf("\nRTSP: OPTIONS %s\n", uri); - my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri); - my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_OPTIONS); - my_curl_easy_perform(curl); -} - - -// send RTSP DESCRIBE request and write sdp response to a file -void rtsp_describe(CURL *curl, const char *uri, const char *sdp_filename) { - CURLcode res = CURLE_OK; - printf("\nRTSP: DESCRIBE %s\n", uri); - FILE *sdp_fp = fopen(sdp_filename, "wt"); - if (sdp_fp == NULL) { - fprintf(stderr, "Could not open '%s' for writing\n", sdp_filename); - sdp_fp = stdout; - } else { - printf("Writing SDP to '%s'\n", sdp_filename); - } - my_curl_easy_setopt(curl, CURLOPT_WRITEDATA, sdp_fp); - my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_DESCRIBE); - my_curl_easy_perform(curl); - my_curl_easy_setopt(curl, CURLOPT_WRITEDATA, stdout); - if (sdp_fp != stdout) { - fclose(sdp_fp); - } -} - - -// send RTSP SETUP request -void rtsp_setup(CURL *curl, const char *uri, const char *transport) { - CURLcode res = CURLE_OK; - printf("\nRTSP: SETUP %s\n", uri); - printf(" TRANSPORT %s\n", transport); - my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri); - my_curl_easy_setopt(curl, CURLOPT_RTSP_TRANSPORT, transport); - my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_SETUP); - my_curl_easy_perform(curl); -} - - -// send RTSP PLAY request -void rtsp_play(CURL *curl, const char *uri, const char *range) { - CURLcode res = CURLE_OK; - printf("\nRTSP: PLAY %s\n", uri); - my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri); - my_curl_easy_setopt(curl, CURLOPT_RANGE, range); - my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_PLAY); - my_curl_easy_perform(curl); -} - - -// send RTSP TEARDOWN request -void rtsp_teardown(CURL *curl, const char *uri) { - CURLcode res = CURLE_OK; - printf("\nRTSP: TEARDOWN %s\n", uri); - my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_TEARDOWN); - my_curl_easy_perform(curl); -} - - -// convert url into an sdp filename -void get_sdp_filename(const char *url, char *sdp_filename) { - strcpy(sdp_filename, "video.sdp"); - const char *s = strrchr(url, '/'); - if (s != NULL) { - s++; - if (s[0] != '\0') { - sprintf(sdp_filename, "%s.sdp", s); - } - } -} - - -// scan sdp file for media control attribute -void get_media_control_attribute(const char *sdp_filename, char *control) { - control[0] = '\0'; - int max_len = 256; - char *s = new char[max_len]; - FILE *sdp_fp = fopen(sdp_filename, "rt"); - if (sdp_fp != NULL) { - while (fgets(s, max_len - 2, sdp_fp) != NULL) { - sscanf(s, " a = control: %s", control); - } - fclose(sdp_fp); - } - delete []s; -} - - -// main app -int main(int argc, char * const argv[]) { - const char *transport = "RTP/AVP;unicast;client_port=1234-1235"; // UDP -// const char *transport = "RTP/AVP/TCP;unicast;client_port=1234-1235"; // TCP - const char *range = "0.000-"; - int rc = EXIT_SUCCESS; - - printf("\nRTSP request %s\n", VERSION_STR); - printf(" Project web site: http://code.google.com/p/rtsprequest/\n"); - printf(" Requires cURL V7.20 or greater\n\n"); - - // check command line - char *basename = NULL; - if ((argc != 2) && (argc != 3)) { - basename = strrchr(argv[0], '/'); - if (basename == NULL) { - basename = strrchr(argv[0], '\\'); - } - if (basename == NULL) { - basename = argv[0]; - } else { - basename++; - } - printf("Usage: %s url [transport]\n", basename); - printf(" url of video server\n"); - printf(" transport (optional) specifier for media stream protocol\n"); - printf(" default transport: %s\n", transport); - printf("Example: %s rtsp://192.168.0.2/media/video1\n\n", basename); - rc = EXIT_FAILURE; - } else { - const char *url = argv[1]; - char *uri = new char[strlen(url) + 32]; - char *sdp_filename = new char[strlen(url) + 32]; - char *control = new char[strlen(url) + 32]; - get_sdp_filename(url, sdp_filename); - if (argc == 3) { - transport = argv[2]; - } - - // initialize curl - CURLcode res = CURLE_OK; - res = curl_global_init(CURL_GLOBAL_ALL); - if (res == CURLE_OK) { - curl_version_info_data *data = curl_version_info(CURLVERSION_NOW); - fprintf(stderr, " cURL V%s loaded\n", data->version); - - // initialize this curl session - CURL *curl = curl_easy_init(); - if (curl != NULL) { - my_curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L); - my_curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L); - my_curl_easy_setopt(curl, CURLOPT_WRITEHEADER, stdout); - my_curl_easy_setopt(curl, CURLOPT_URL, url); - - // request server options - sprintf(uri, "%s", url); - rtsp_options(curl, uri); - - // request session description and write response to sdp file - rtsp_describe(curl, uri, sdp_filename); - - // get media control attribute from sdp file - get_media_control_attribute(sdp_filename, control); - - // setup media stream - sprintf(uri, "%s/%s", url, control); - rtsp_setup(curl, uri, transport); - - // start playing media stream - sprintf(uri, "%s/", url); - rtsp_play(curl, uri, range); - printf("Playing video, press any key to stop ..."); - _getch(); - printf("\n"); - - // teardown session - rtsp_teardown(curl, uri); - - // cleanup - curl_easy_cleanup(curl); - curl = NULL; - } else { - fprintf(stderr, "curl_easy_init() failed\n"); - } - curl_global_cleanup(); - } else { - fprintf(stderr, "curl_global_init(%s) failed\n", "CURL_GLOBAL_ALL", res); - } - delete []control; - delete []sdp_filename; - delete []uri; - } - - return rc; -} +/* + * Copyright (c) 2011, Jim Hollinger + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Jim Hollinger nor the names of its contributors + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include +#include +#include + +#if defined (WIN32) +# include /* _getch() */ +#else +# include +# include + +static int _getch(void) +{ + struct termios oldt, newt; + int ch; + tcgetattr( STDIN_FILENO, &oldt ); + newt = oldt; + newt.c_lflag &= ~( ICANON | ECHO ); + tcsetattr( STDIN_FILENO, TCSANOW, &newt ); + ch = getchar(); + tcsetattr( STDIN_FILENO, TCSANOW, &oldt ); + return ch; +} +#endif + +#include + +#define VERSION_STR "V1.0" + +/* error handling macros */ +#define my_curl_easy_setopt(A, B, C) \ + if ((res = curl_easy_setopt((A), (B), (C))) != CURLE_OK) \ + fprintf(stderr, "curl_easy_setopt(%s, %s, %s) failed: %d\n", \ + #A, #B, #C, res); + +#define my_curl_easy_perform(A) \ + if ((res = curl_easy_perform((A))) != CURLE_OK) \ + fprintf(stderr, "curl_easy_perform(%s) failed: %d\n", #A, res); + + +/* send RTSP OPTIONS request */ +static void rtsp_options(CURL *curl, const char *uri) +{ + CURLcode res = CURLE_OK; + printf("\nRTSP: OPTIONS %s\n", uri); + my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri); + my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_OPTIONS); + my_curl_easy_perform(curl); +} + + +/* send RTSP DESCRIBE request and write sdp response to a file */ +static void rtsp_describe(CURL *curl, const char *uri, + const char *sdp_filename) +{ + CURLcode res = CURLE_OK; + FILE *sdp_fp = fopen(sdp_filename, "wt"); + printf("\nRTSP: DESCRIBE %s\n", uri); + if (sdp_fp == NULL) { + fprintf(stderr, "Could not open '%s' for writing\n", sdp_filename); + sdp_fp = stdout; + } + else { + printf("Writing SDP to '%s'\n", sdp_filename); + } + my_curl_easy_setopt(curl, CURLOPT_WRITEDATA, sdp_fp); + my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_DESCRIBE); + my_curl_easy_perform(curl); + my_curl_easy_setopt(curl, CURLOPT_WRITEDATA, stdout); + if (sdp_fp != stdout) { + fclose(sdp_fp); + } +} + +/* send RTSP SETUP request */ +static void rtsp_setup(CURL *curl, const char *uri, const char *transport) +{ + CURLcode res = CURLE_OK; + printf("\nRTSP: SETUP %s\n", uri); + printf(" TRANSPORT %s\n", transport); + my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri); + my_curl_easy_setopt(curl, CURLOPT_RTSP_TRANSPORT, transport); + my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_SETUP); + my_curl_easy_perform(curl); +} + + +/* send RTSP PLAY request */ +static void rtsp_play(CURL *curl, const char *uri, const char *range) +{ + CURLcode res = CURLE_OK; + printf("\nRTSP: PLAY %s\n", uri); + my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri); + my_curl_easy_setopt(curl, CURLOPT_RANGE, range); + my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_PLAY); + my_curl_easy_perform(curl); +} + + +/* send RTSP TEARDOWN request */ +static void rtsp_teardown(CURL *curl, const char *uri) +{ + CURLcode res = CURLE_OK; + printf("\nRTSP: TEARDOWN %s\n", uri); + my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_TEARDOWN); + my_curl_easy_perform(curl); +} + + +/* convert url into an sdp filename */ +static void get_sdp_filename(const char *url, char *sdp_filename) +{ + const char *s = strrchr(url, '/'); + strcpy(sdp_filename, "video.sdp"); + if (s != NULL) { + s++; + if (s[0] != '\0') { + sprintf(sdp_filename, "%s.sdp", s); + } + } +} + + +/* scan sdp file for media control attribute */ +static void get_media_control_attribute(const char *sdp_filename, + char *control) +{ + int max_len = 256; + char *s = malloc(max_len); + FILE *sdp_fp = fopen(sdp_filename, "rt"); + control[0] = '\0'; + if (sdp_fp != NULL) { + while (fgets(s, max_len - 2, sdp_fp) != NULL) { + sscanf(s, " a = control: %s", control); + } + fclose(sdp_fp); + } + free(s); +} + + +/* main app */ +int main(int argc, char * const argv[]) +{ +#if 1 + const char *transport = "RTP/AVP;unicast;client_port=1234-1235"; /* UDP */ +#else + const char *transport = "RTP/AVP/TCP;unicast;client_port=1234-1235"; /* TCP */ +#endif + const char *range = "0.000-"; + int rc = EXIT_SUCCESS; + char *basename = NULL; + + printf("\nRTSP request %s\n", VERSION_STR); + printf(" Project web site: http://code.google.com/p/rtsprequest/\n"); + printf(" Requires cURL V7.20 or greater\n\n"); + + /* check command line */ + if ((argc != 2) && (argc != 3)) { + basename = strrchr(argv[0], '/'); + if (basename == NULL) { + basename = strrchr(argv[0], '\\'); + } + if (basename == NULL) { + basename = argv[0]; + } else { + basename++; + } + printf("Usage: %s url [transport]\n", basename); + printf(" url of video server\n"); + printf(" transport (optional) specifier for media stream protocol\n"); + printf(" default transport: %s\n", transport); + printf("Example: %s rtsp://192.168.0.2/media/video1\n\n", basename); + rc = EXIT_FAILURE; + } else { + const char *url = argv[1]; + char *uri = malloc(strlen(url) + 32); + char *sdp_filename = malloc(strlen(url) + 32); + char *control = malloc(strlen(url) + 32); + CURLcode res; + get_sdp_filename(url, sdp_filename); + if (argc == 3) { + transport = argv[2]; + } + + /* initialize curl */ + res = curl_global_init(CURL_GLOBAL_ALL); + if (res == CURLE_OK) { + curl_version_info_data *data = curl_version_info(CURLVERSION_NOW); + CURL *curl; + fprintf(stderr, " cURL V%s loaded\n", data->version); + + /* initialize this curl session */ + curl = curl_easy_init(); + if (curl != NULL) { + my_curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L); + my_curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L); + my_curl_easy_setopt(curl, CURLOPT_WRITEHEADER, stdout); + my_curl_easy_setopt(curl, CURLOPT_URL, url); + + /* request server options */ + sprintf(uri, "%s", url); + rtsp_options(curl, uri); + + /* request session description and write response to sdp file */ + rtsp_describe(curl, uri, sdp_filename); + + /* get media control attribute from sdp file */ + get_media_control_attribute(sdp_filename, control); + + /* setup media stream */ + sprintf(uri, "%s/%s", url, control); + rtsp_setup(curl, uri, transport); + + /* start playing media stream */ + sprintf(uri, "%s/", url); + rtsp_play(curl, uri, range); + printf("Playing video, press any key to stop ..."); + _getch(); + printf("\n"); + + /* teardown session */ + rtsp_teardown(curl, uri); + + /* cleanup */ + curl_easy_cleanup(curl); + curl = NULL; + } else { + fprintf(stderr, "curl_easy_init() failed\n"); + } + curl_global_cleanup(); + } else { + fprintf(stderr, "curl_global_init(%s) failed: %d\n", + "CURL_GLOBAL_ALL", res); + } + free(control); + free(sdp_filename); + free(uri); + } + + return rc; +} -- cgit v1.2.3