static int parse_h264_sdp_line(AVFormatContext *s, int st_index, PayloadContext *h264_data, const char *line) { AVStream *stream; AVCodecContext *codec; const char *p = line; if (st_index < 0) return 0; stream = s->streams[st_index]; codec = stream->codec; assert(h264_data->cookie == MAGIC_COOKIE); if (av_strstart(p, "framesize:", &p)) { char buf1[50]; char *dst = buf1; // remove the protocol identifier.. while (*p && *p == ' ') p++; // strip spaces. while (*p && *p != ' ') p++; // eat protocol identifier while (*p && *p == ' ') p++; // strip trailing spaces. while (*p && *p != '-' && (dst - buf1) < sizeof(buf1) - 1) { *dst++ = *p++; } *dst = '\0'; // a='framesize:96 320-240' // set our parameters.. codec->width = atoi(buf1); codec->height = atoi(p + 1); // skip the - codec->pix_fmt = PIX_FMT_YUV420P; } else if (av_strstart(p, "fmtp:", &p)) { return ff_parse_fmtp(stream, h264_data, p, sdp_parse_fmtp_config_h264); } else if (av_strstart(p, "cliprect:", &p)) { // could use this if we wanted. } return 0; // keep processing it the normal way... }